octave: libinterp/corefcn/ft-text-renderer.cc annotate

annotate libinterp/corefcn/ft-text-renderer.cc @ 22326:71dd9d5a5ecd

move more new classes inside octave namespace * base-text-renderer.h, ft-text-renderer.cc, ft-text-renderer.h, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h, oct-stream.cc, text-renderer.cc, text-renderer.h, ov-java.cc, xzip.cc: Move classes inside octave namespace. * GLCanvas.cc, gl-select.cc, gl-select.h, graphics.cc, graphics.in.h, __init_fltk__.cc, __osmesa_print__.cc: Update.

author	John W. Eaton <jwe@octave.org>
date	Wed, 17 Aug 2016 02:57:50 -0400
parents	bac0d6f07a3e
children	b81b08cc4c83

rev	line source
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1 /*
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	2
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	3 Copyright (C) 2016 John W. Eaton
22323 bac0d6f07a3e maint: Update copyright notices for 2016. John W. Eaton <jwe@octave.org> parents: 22173 diff changeset	4 Copyright (C) 2009-2016 Michael Goffioul
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	5
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	6 This file is part of Octave.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	7
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	8 Octave is free software; you can redistribute it and/or modify it
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	9 under the terms of the GNU General Public License as published by the
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	10 Free Software Foundation; either version 3 of the License, or (at your
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	11 option) any later version.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	12
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	13 Octave is distributed in the hope that it will be useful, but WITHOUT
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	16 for more details.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	17
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	18 You should have received a copy of the GNU General Public License
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	19 along with Octave; see the file COPYING. If not, see
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	20 <http://www.gnu.org/licenses/>.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	21
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	22 */
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	23
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21568 diff changeset	24 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21209 diff changeset	25 # include "config.h"
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	26 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	27
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	28 #include "base-text-renderer.h"
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	29
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	30 #if defined (HAVE_FREETYPE)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	31
21334 36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	32 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC)
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	33 #pragma GCC diagnostic push
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	34 #pragma GCC diagnostic ignored "-Wold-style-cast"
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	35 #endif
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	36
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	37 #include <ft2build.h>
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	38 #include FT_FREETYPE_H
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	39
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	40 #if defined (HAVE_FONTCONFIG)
21200 fcac5dbbf9ed maint: Indent #ifdef blocks in libinterp. Rik <rik@octave.org> parents: 21102 diff changeset	41 # include <fontconfig/fontconfig.h>
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	42 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	43
21334 36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	44 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC)
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	45 #pragma GCC diagnostic pop
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	46 #endif
36e75e013849 * ft-text-renderer.cc: Use pragma to avoid old-style cast warnings. John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	47
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	48 #include <clocale>
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	49 #include <cwchar>
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	50 #include <iostream>
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	51 #include <map>
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	52 #include <utility>
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	53
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	54 #include "singleton-cleanup.h"
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	55
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	56 #include "error.h"
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	57 #include "pr-output.h"
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	58 #include "text-renderer.h"
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	59
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	60 // FIXME: maybe issue at most one warning per glyph/font/size/weight
15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	61 // combination.
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	62
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	63 static void
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	64 warn_missing_glyph (FT_ULong c)
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	65 {
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	66 warning_with_id ("Octave:missing-glyph",
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	67 "text_renderer: skipping missing glyph for character '%x'", c);
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	68 }
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	69
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	70 static void
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	71 warn_glyph_render (FT_ULong c)
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	72 {
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	73 warning_with_id ("Octave:glyph-render",
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	74 "text_renderer: unable to render glyph for character '%x'", c);
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	75 }
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	76
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	77 #if defined (_MSC_VER)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	78 // FIXME: is this really needed?
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	79 //
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	80 // This is just a trick to avoid multiple symbol definitions.
13730 a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	81 // PermMatrix.h contains a dllexport'ed Array<octave_idx_type>
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	82 // that will cause MSVC not to generate a new instantiation and
15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	83 // use the imported one instead.
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	84 # include "PermMatrix.h"
13730 a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	85 #endif
a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	86
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	87 // Forward declaration
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	88 static void ft_face_destroyed (void *object);
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	89
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	90 namespace octave
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	91 {
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	92
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	93 class
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	94 ft_manager
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	95 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	96 public:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	97 static bool instance_ok (void)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	98 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	99 bool retval = true;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	100
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	101 if (! instance)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	102 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	103 instance = new ft_manager ();
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	104
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	105 if (instance)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	106 singleton_cleanup_list::add (cleanup_instance);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	107 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	108
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	109 if (! instance)
20956 850e3d2533d4 maint: Eliminate more useless statements after error(). Rik <rik@octave.org> parents: 20945 diff changeset	110 error ("unable to create ft_manager!");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	111
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	112 return retval;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	113 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	114
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	115 static void cleanup_instance (void) { delete instance; instance = 0; }
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	116
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	117 static FT_Face get_font (const std::string& name, const std::string& weight,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	118 const std::string& angle, double size)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	119 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	120 return (instance_ok ()
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	121 ? instance->do_get_font (name, weight, angle, size)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	122 : 0);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	123 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	124
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	125 static void font_destroyed (FT_Face face)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	126 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	127 if (instance_ok ())
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	128 instance->do_font_destroyed (face);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	129 }
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	130
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	131 private:
12122 f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	132
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	133 static ft_manager *instance;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	134
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	135 typedef std::pair<std::string, double> ft_key;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	136 typedef std::map<ft_key, FT_Face> ft_cache;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	137
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	138 // Cache the fonts loaded by FreeType. This cache only contains
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	139 // weak references to the fonts, strong references are only present
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	140 // in class text_renderer.
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	141 ft_cache cache;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	142
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	143 private:
12122 f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	144
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	145 // No copying!
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	146
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	147 ft_manager (const ft_manager&);
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	148
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	149 ft_manager& operator = (const ft_manager&);
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	150
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	151 ft_manager (void)
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	152 : library (), freetype_initialized (false), fontconfig_initialized (false)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	153 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	154 if (FT_Init_FreeType (&library))
20428 7ac907da9fba Use error() rather than ::error() unless explicitly required. Rik <rik@octave.org> parents: 19697 diff changeset	155 error ("unable to initialize FreeType library");
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	156 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	157 freetype_initialized = true;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	158
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	159 #if defined (HAVE_FONTCONFIG)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	160 if (! FcInit ())
20428 7ac907da9fba Use error() rather than ::error() unless explicitly required. Rik <rik@octave.org> parents: 19697 diff changeset	161 error ("unable to initialize fontconfig library");
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	162 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	163 fontconfig_initialized = true;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	164 #endif
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	165 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	166
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	167 ~ft_manager (void)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	168 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	169 if (freetype_initialized)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	170 FT_Done_FreeType (library);
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	171
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	172 #if defined (HAVE_FONTCONFIG)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	173 // FIXME: Skip the call to FcFini because it can trigger the assertion
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	174 //
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	175 // octave: fccache.c:507: FcCacheFini: Assertion 'fcCacheChains[i] == ((void *)0)' failed.
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	176 //
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	177 // if (fontconfig_initialized)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	178 // FcFini ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	179 #endif
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	180 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	181
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	182 FT_Face do_get_font (const std::string& name, const std::string& weight,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	183 const std::string& angle, double size)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	184 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	185 FT_Face retval = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	186
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	187 #if defined (HAVE_FT_REFERENCE_FACE)
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	188 // Look first into the font cache, then use fontconfig. If the font
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	189 // is present in the cache, simply add a reference and return it.
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	190
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	191 ft_key key (name + ":" + weight + ":" + angle, size);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	192 ft_cache::const_iterator it = cache.find (key);
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	193
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	194 if (it != cache.end ())
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	195 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	196 FT_Reference_Face (it->second);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	197 return it->second;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	198 }
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	199 #endif
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	200
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	201 std::string file;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	202
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	203 #if defined (HAVE_FONTCONFIG)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	204 if (fontconfig_initialized)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	205 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	206 int fc_weight, fc_angle;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	207
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	208 if (weight == "bold")
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	209 fc_weight = FC_WEIGHT_BOLD;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	210 else if (weight == "light")
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	211 fc_weight = FC_WEIGHT_LIGHT;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	212 else if (weight == "demi")
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	213 fc_weight = FC_WEIGHT_DEMIBOLD;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	214 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	215 fc_weight = FC_WEIGHT_NORMAL;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	216
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	217 if (angle == "italic")
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	218 fc_angle = FC_SLANT_ITALIC;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	219 else if (angle == "oblique")
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	220 fc_angle = FC_SLANT_OBLIQUE;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	221 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	222 fc_angle = FC_SLANT_ROMAN;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	223
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	224 FcPattern *pat = FcPatternCreate ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	225
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	226 FcPatternAddString (pat, FC_FAMILY,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	227 (reinterpret_cast<const FcChar8*>
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	228 (name == "*" ? "sans" : name.c_str ())));
9616 2093499ec9f4 avoid crash if default font can't be found John W. Eaton <jwe@octave.org> parents: 9406 diff changeset	229
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	230 FcPatternAddInteger (pat, FC_WEIGHT, fc_weight);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	231 FcPatternAddInteger (pat, FC_SLANT, fc_angle);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	232 FcPatternAddDouble (pat, FC_PIXEL_SIZE, size);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	233
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	234 if (FcConfigSubstitute (0, pat, FcMatchPattern))
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	235 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	236 FcResult res;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	237 FcPattern *match;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	238
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	239 FcDefaultSubstitute (pat);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	240 match = FcFontMatch (0, pat, &res);
9833 637fa784d102 Allow more font matches godfrey@isl.Stanford.EDU parents: 9619 diff changeset	241
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	242 // FIXME: originally, this test also required that
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	243 // res != FcResultNoMatch. Is that really needed?
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	244 if (match)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	245 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	246 unsigned char *tmp;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	247
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	248 FcPatternGetString (match, FC_FILE, 0, &tmp);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	249 file = reinterpret_cast<char*> (tmp);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	250 }
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	251 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	252 ::warning ("could not match any font: %s-%s-%s-%g",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	253 name.c_str (), weight.c_str (), angle.c_str (),
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	254 size);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	255
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	256 if (match)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	257 FcPatternDestroy (match);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	258 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	259
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	260 FcPatternDestroy (pat);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	261 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	262 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	263
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	264 if (file.empty ())
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	265 {
21979 d04da18a407a use OCTAVE_USE_WINDOWS_API more consistently John W. Eaton <jwe@octave.org> parents: 21942 diff changeset	266 #if defined (OCTAVE_USE_WINDOWS_API)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	267 file = "C:/WINDOWS/Fonts/verdana.ttf";
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	268 #else
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	269 // FIXME: find a "standard" font for UNIX platforms
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	270 #endif
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	271 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	272
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	273 if (! file.empty ())
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	274 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	275 if (FT_New_Face (library, file.c_str (), 0, &retval))
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	276 ::warning ("ft_manager: unable to load font: %s", file.c_str ());
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	277 #if defined (HAVE_FT_REFERENCE_FACE)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	278 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	279 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	280 // Install a finalizer to notify ft_manager that the font is
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	281 // being destroyed. The class ft_manager only keeps weak
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	282 // references to font objects.
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	283
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	284 retval->generic.data = new ft_key (key);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	285 retval->generic.finalizer = ft_face_destroyed;
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	286
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	287 // Insert loaded font into the cache.
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	288
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	289 cache[key] = retval;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	290 }
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	291 #endif
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	292 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	293
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	294 return retval;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	295 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	296
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	297 void do_font_destroyed (FT_Face face)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	298 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	299 if (face->generic.data)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	300 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	301 ft_key pkey = reinterpret_cast<ft_key> (face->generic.data);
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	302
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	303 cache.erase (*pkey);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	304 delete pkey;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	305 face->generic.data = 0;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	306 }
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	307 }
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	308
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	309 private:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	310 FT_Library library;
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	311 bool freetype_initialized;
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	312 bool fontconfig_initialized;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	313 };
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	314
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	315 ft_manager *ft_manager::instance = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	316
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	317 }
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	318
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	319 static void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	320 ft_face_destroyed (void *object)
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	321 {
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	322 octave::ft_manager::font_destroyed (reinterpret_cast<FT_Face> (object));
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	323 }
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	324
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	325 namespace octave
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	326 {
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	327
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	328 class
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	329 OCTINTERP_API
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	330 ft_text_renderer : public base_text_renderer
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	331 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	332 public:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	333
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	334 enum
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	335 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	336 MODE_BBOX = 0,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	337 MODE_RENDER = 1
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	338 };
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	339
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	340 enum
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	341 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	342 ROTATION_0 = 0,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	343 ROTATION_90 = 1,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	344 ROTATION_180 = 2,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	345 ROTATION_270 = 3
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	346 };
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	347
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	348 public:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	349
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	350 ft_text_renderer (void)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	351 : base_text_renderer (), font (), bbox (1, 4, 0.0), halign (0),
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	352 xoffset (0), line_yoffset (0), yoffset (0), mode (MODE_BBOX),
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	353 color (dim_vector (1, 3), 0)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	354 { }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	355
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	356 ~ft_text_renderer (void) { }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	357
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	358 void visit (text_element_string& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	359
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	360 void visit (text_element_list& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	361
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	362 void visit (text_element_subscript& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	363
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	364 void visit (text_element_superscript& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	365
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	366 void visit (text_element_color& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	367
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	368 void visit (text_element_fontsize& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	369
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	370 void visit (text_element_fontname& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	371
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	372 void visit (text_element_fontstyle& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	373
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	374 void visit (text_element_symbol& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	375
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	376 void visit (text_element_combined& e);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	377
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	378 void reset (void);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	379
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	380 uint8NDArray get_pixels (void) const { return pixels; }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	381
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	382 Matrix get_boundingbox (void) const { return bbox; }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	383
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	384 uint8NDArray render (text_element *elt, Matrix& box,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	385 int rotation = ROTATION_0);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	386
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	387 Matrix get_extent (text_element *elt, double rotation = 0.0);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	388 Matrix get_extent (const std::string& txt, double rotation,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	389 const caseless_str& interpreter);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	390
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	391 void set_font (const std::string& name, const std::string& weight,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	392 const std::string& angle, double size);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	393
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	394 void set_color (const Matrix& c);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	395
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	396 void set_mode (int m);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	397
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	398 void text_to_pixels (const std::string& txt,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	399 uint8NDArray& pxls, Matrix& bbox,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	400 int halign, int valign, double rotation,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	401 const caseless_str& interpreter,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	402 bool handle_rotation);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	403
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	404 private:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	405
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	406 int rotation_to_mode (double rotation) const;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	407
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	408 // No copying!
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	409
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	410 ft_text_renderer (const ft_text_renderer&);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	411
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	412 ft_text_renderer& operator = (const ft_text_renderer&);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	413
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	414 // Class to hold information about fonts and a strong
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	415 // reference to the font objects loaded by FreeType.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	416
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	417 class ft_font : public text_renderer::font
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	418 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	419 public:
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	420
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	421 ft_font (void)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	422 : text_renderer::font (), face (0) { }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	423
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	424 ft_font (const std::string& nm, const std::string& wt,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	425 const std::string& ang, double sz, FT_Face f = 0)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	426 : text_renderer::font (nm, wt, ang, sz), face (f)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	427 { }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	428
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	429 ft_font (const ft_font& ft);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	430
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	431 ~ft_font (void)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	432 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	433 if (face)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	434 FT_Done_Face (face);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	435 }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	436
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	437 ft_font& operator = (const ft_font& ft);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	438
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	439 bool is_valid (void) const { return get_face (); }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	440
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	441 FT_Face get_face (void) const;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	442
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	443 private:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	444
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	445 mutable FT_Face face;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	446 };
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	447
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	448 void push_new_line (void);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	449
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	450 void update_line_bbox (void);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	451
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	452 void compute_bbox (void);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	453
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	454 int compute_line_xoffset (const Matrix& lb) const;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	455
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	456 FT_UInt process_character (FT_ULong code, FT_UInt previous = 0);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	457
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	458 public:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	459
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	460 void text_to_strlist (const std::string& txt,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	461 std::list<text_renderer::string>& lst, Matrix& bbox,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	462 int halign, int valign, double rotation,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	463 const caseless_str& interp);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	464
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	465 private:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	466
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	467 // The current font used by the renderer.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	468 ft_font font;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	469
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	470 // Used to stored the bounding box corresponding to the rendered text.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	471 // The bounding box has the form [x, y, w, h] where x and y represent the
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	472 // coordinates of the bottom left corner relative to the anchor point of
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	473 // the text (== start of text on the baseline). Due to font descent or
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	474 // multiple lines, the value y is usually negative.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	475 Matrix bbox;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	476
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	477 // Used to stored the rendered text. It's a 3D matrix with size MxNx4
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	478 // where M and N are the width and height of the bounding box.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	479 uint8NDArray pixels;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	480
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	481 // Used to store the bounding box of each line. This is used to layout
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	482 // multiline text properly.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	483 std::list<Matrix> line_bbox;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	484
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	485 // The current horizontal alignment. This is used to align multi-line text.
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	486 int halign;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	487
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	488 // The X offset for the next glyph.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	489 int xoffset;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	490
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	491 // The Y offset of the baseline for the current line.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	492 int line_yoffset;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	493
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	494 // The Y offset of the baseline for the next glyph. The offset is relative
b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	495 // to line_yoffset. The total Y offset is computed with:
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	496 // line_yoffset + yoffset.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	497 int yoffset;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	498
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	499 // The current mode of the rendering process (box computing or rendering).
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	500 int mode;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	501
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	502 // The base color of the rendered text.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	503 uint8NDArray color;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	504
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	505 // A list of parsed strings to be used for printing.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	506 std::list<text_renderer::string> strlist;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	507
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	508 // The X offset of the baseline for the current line.
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	509 int line_xoffset;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	510
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	511 };
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	512
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	513 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	514 ft_text_renderer::set_font (const std::string& name, const std::string& weight,
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	515 const std::string& angle, double size)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	516 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	517 // FIXME: take "fontunits" into account
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	518
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	519 font = ft_font (name, weight, angle, size, 0);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	520 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	521
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	522 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	523 ft_text_renderer::push_new_line (void)
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	524 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	525 switch (mode)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	526 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	527 case MODE_BBOX:
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	528 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	529 // Create a new bbox entry based on the current font.
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	530
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	531 FT_Face face = font.get_face ();
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	532
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	533 if (face)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	534 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	535 int asc = face->size->metrics.ascender >> 6;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	536 int desc = face->size->metrics.descender >> 6;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	537 int h = face->size->metrics.height >> 6;
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	538
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	539 Matrix bb (1, 5, 0.0);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	540
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	541 bb(1) = desc;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	542 bb(3) = asc - desc;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	543 bb(4) = h;
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	544
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	545 line_bbox.push_back (bb);
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	546
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	547 xoffset = yoffset = 0;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	548 }
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	549 }
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	550 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	551
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	552 case MODE_RENDER:
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	553 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	554 // Move to the next line bbox, adjust xoffset based on alignment
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	555 // and yoffset based on the old and new line bbox.
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	556
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	557 Matrix old_bbox = line_bbox.front ();
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	558 line_bbox.pop_front ();
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	559 Matrix new_bbox = line_bbox.front ();
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	560
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	561 xoffset = line_xoffset = compute_line_xoffset (new_bbox);
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	562 line_yoffset += (old_bbox(1) - (new_bbox(1) + new_bbox(3)));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	563 yoffset = 0;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	564 }
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	565 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	566 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	567 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	568
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	569 int
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	570 ft_text_renderer::compute_line_xoffset (const Matrix& lb) const
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	571 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	572 if (! bbox.is_empty ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	573 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	574 switch (halign)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	575 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	576 case 0:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	577 return 0;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	578 case 1:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	579 return (bbox(2) - lb(2)) / 2;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	580 case 2:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	581 return (bbox(2) - lb(2));
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	582 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	583 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	584
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	585 return 0;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	586 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	587
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	588 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	589 ft_text_renderer::compute_bbox (void)
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	590 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	591 // Stack the various line bbox together and compute the final
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	592 // bounding box for the entire text string.
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	593
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	594 bbox = Matrix ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	595
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	596 switch (line_bbox.size ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	597 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	598 case 0:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	599 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	600
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	601 case 1:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	602 bbox = line_bbox.front ().extract (0, 0, 0, 3);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	603 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	604
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	605 default:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	606 for (std::list<Matrix>::const_iterator it = line_bbox.begin ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	607 it != line_bbox.end (); ++it)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	608 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	609 if (bbox.is_empty ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	610 bbox = it->extract (0, 0, 0, 3);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	611 else
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	612 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	613 bbox(1) -= (*it)(3);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	614 bbox(3) += (*it)(3);
21782 2aef506f3fec use namespace for lo-mappers.h functions John W. Eaton <jwe@octave.org> parents: 21751 diff changeset	615 bbox(2) = octave::math::max (bbox(2), (*it)(2));
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	616 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	617 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	618 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	619 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	620 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	621
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	622 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	623 ft_text_renderer::update_line_bbox (void)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	624 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	625 // Called after a font change, when in MODE_BBOX mode, to update the
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	626 // current line bbox with the new font metrics. This also includes the
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	627 // current yoffset, that is the offset of the current glyph's baseline
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	628 // the line's baseline.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	629
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	630 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	631 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	632 int asc = font.get_face ()->size->metrics.ascender >> 6;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	633 int desc = font.get_face ()->size->metrics.descender >> 6;
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	634
20471 25caa0deaabb Fix multi-line text bounding box when using subscripts (bug #45508) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20454 diff changeset	635 Matrix& bb = line_bbox.back ();
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	636
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	637 if ((yoffset + desc) < bb(1))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	638 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	639 // The new font goes below the bottom of the current bbox.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	640
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	641 int delta = bb(1) - (yoffset + desc);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	642
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	643 bb(1) -= delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	644 bb(3) += delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	645 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	646
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	647 if ((yoffset + asc) > (bb(1) + bb(3)))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	648 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	649 // The new font goes above the top of the current bbox.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	650
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	651 int delta = (yoffset + asc) - (bb(1) + bb(3));
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	652
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	653 bb(3) += delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	654 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	655 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	656 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	657
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	658 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	659 ft_text_renderer::set_mode (int m)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	660 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	661 mode = m;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	662
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	663 switch (mode)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	664 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	665 case MODE_BBOX:
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	666 xoffset = line_yoffset = yoffset = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	667 bbox = Matrix (1, 4, 0.0);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	668 line_bbox.clear ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	669 push_new_line ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	670 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	671
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	672 case MODE_RENDER:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	673 if (bbox.numel () != 4)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	674 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	675 ::warning ("ft_text_renderer: invalid bounding box, cannot render");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	676
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	677 xoffset = line_yoffset = yoffset = 0;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	678 pixels = uint8NDArray ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	679 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	680 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	681 {
22059 b1256fb38777 dim_vector: replace 7 constructors with single variadic template (patch #9030). Carnë Draug <carandraug@octave.org> parents: 22022 diff changeset	682 dim_vector d (4, octave_idx_type (bbox(2)),
b1256fb38777 dim_vector: replace 7 constructors with single variadic template (patch #9030). Carnë Draug <carandraug@octave.org> parents: 22022 diff changeset	683 octave_idx_type (bbox(3)));
b1256fb38777 dim_vector: replace 7 constructors with single variadic template (patch #9030). Carnë Draug <carandraug@octave.org> parents: 22022 diff changeset	684 pixels = uint8NDArray (d, static_cast<uint8_t> (0));
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	685 xoffset = compute_line_xoffset (line_bbox.front ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	686 line_yoffset = -bbox(1)-1;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	687 yoffset = 0;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	688 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	689 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	690
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	691 default:
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	692 error ("ft_text_renderer: invalid mode '%d'", mode);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	693 break;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	694 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	695 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	696
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	697 FT_UInt
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	698 ft_text_renderer::process_character (FT_ULong code, FT_UInt previous)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	699 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	700 FT_Face face = font.get_face ();
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	701 FT_UInt glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	702
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	703 if (face)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	704 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	705 glyph_index = FT_Get_Char_Index (face, code);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	706
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	707 if (code != '\n'
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	708 && (! glyph_index
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	709 \|\| FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT)))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	710 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	711 glyph_index = 0;
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	712 warn_missing_glyph (code);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	713 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	714 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	715 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	716 switch (mode)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	717 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	718 case MODE_RENDER:
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	719 if (code == '\n')
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	720 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	721 glyph_index = FT_Get_Char_Index (face, ' ');
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	722 if (! glyph_index
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	723 \|\| FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT))
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	724 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	725 glyph_index = 0;
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	726 warn_missing_glyph (' ');
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	727 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	728 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	729 push_new_line ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	730 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	731 else if (FT_Render_Glyph (face->glyph, FT_RENDER_MODE_NORMAL))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	732 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	733 glyph_index = 0;
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	734 warn_glyph_render (code);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	735 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	736 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	737 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	738 FT_Bitmap& bitmap = face->glyph->bitmap;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	739 int x0, y0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	740
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	741 if (previous)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	742 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	743 FT_Vector delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	744
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	745 FT_Get_Kerning (face, previous, glyph_index,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	746 FT_KERNING_DEFAULT, &delta);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	747 xoffset += (delta.x >> 6);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	748 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	749
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	750 x0 = xoffset + face->glyph->bitmap_left;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	751 y0 = line_yoffset + yoffset + face->glyph->bitmap_top;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	752
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	753 // 'w' seems to have a negative -1
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	754 // face->glyph->bitmap_left, this is so we don't
22173 8de49f15e182 doc: Fix "doubled words" typos (\b(\w+)\s+\1\b) Andreas Weber <andy.weber.aw@gmail.com> parents: 22059 diff changeset	755 // index out of bound, and assumes we've allocated
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	756 // the right amount of horizontal space in the bbox.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	757 if (x0 < 0)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	758 x0 = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	759
20454 1a22083b5929 use different approach to avoid unsigned/signed comparison warning John W. Eaton <jwe@octave.org> parents: 20451 diff changeset	760 for (int r = 0; static_cast<unsigned int> (r) < bitmap.rows; r++)
1a22083b5929 use different approach to avoid unsigned/signed comparison warning John W. Eaton <jwe@octave.org> parents: 20451 diff changeset	761 for (int c = 0; static_cast<unsigned int> (c) < bitmap.width; c++)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	762 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	763 unsigned char pix = bitmap.buffer[r*bitmap.width+c];
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	764 if (x0+c < 0 \|\| x0+c >= pixels.dim2 ()
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	765 \|\| y0-r < 0 \|\| y0-r >= pixels.dim3 ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	766 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	767 //::warning ("ft_text_renderer: pixel out of bound (char=%d, (x,y)=(%d,%d), (w,h)=(%d,%d)",
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	768 // str[i], x0+c, y0-r, pixels.dim2 (), pixels.dim3 ());
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	769 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	770 else if (pixels(3, x0+c, y0-r).value () == 0)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	771 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	772 pixels(0, x0+c, y0-r) = color(0);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	773 pixels(1, x0+c, y0-r) = color(1);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	774 pixels(2, x0+c, y0-r) = color(2);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	775 pixels(3, x0+c, y0-r) = pix;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	776 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	777 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	778
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	779 xoffset += (face->glyph->advance.x >> 6);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	780 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	781 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	782
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	783 case MODE_BBOX:
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	784 if (code == '\n')
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	785 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	786 glyph_index = FT_Get_Char_Index (face, ' ');
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	787 if (! glyph_index
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	788 \|\| FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	789 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	790 glyph_index = 0;
21102 dfcb9d74b253 Rename local gripe_XXX functions to err_XXX or warn_XXX. Rik <rik@octave.org> parents: 20974 diff changeset	791 warn_missing_glyph (' ');
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	792 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	793 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	794 push_new_line ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	795 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	796 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	797 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	798 Matrix& bb = line_bbox.back ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	799
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	800 // If we have a previous glyph, use kerning information.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	801 // This usually means moving a bit backward before adding
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	802 // the next glyph. That is, "delta.x" is usually < 0.
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	803 if (previous)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	804 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	805 FT_Vector delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	806
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	807 FT_Get_Kerning (face, previous, glyph_index,
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	808 FT_KERNING_DEFAULT, &delta);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	809
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	810 xoffset += (delta.x >> 6);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	811 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	812
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	813 // Extend current X offset box by the width of the current
21751 b571fc85953f maint: Use two spaces after period to indicate sentence break. Rik <rik@octave.org> parents: 21724 diff changeset	814 // glyph. Then extend the line bounding box if necessary.
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	815
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	816 xoffset += (face->glyph->advance.x >> 6);
21782 2aef506f3fec use namespace for lo-mappers.h functions John W. Eaton <jwe@octave.org> parents: 21751 diff changeset	817 bb(2) = octave::math::max (bb(2), xoffset);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	818 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	819 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	820 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	821 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	822 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	823
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	824 return glyph_index;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	825 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	826
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	827 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	828 ft_text_renderer::text_to_strlist (const std::string& txt,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	829 std::list<text_renderer::string>& lst,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	830 Matrix& box,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	831 int ha, int va, double rot,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	832 const caseless_str& interp)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	833 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	834 uint8NDArray pxls;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	835
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	836 // First run text_to_pixels which will also build the string list
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	837
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	838 text_to_pixels (txt, pxls, box, ha, va, rot, interp, false);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	839
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	840 lst = strlist;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	841 }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	842
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	843 void
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	844 ft_text_renderer::visit (text_element_string& e)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	845 {
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	846 if (font.is_valid ())
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	847 {
9616 2093499ec9f4 avoid crash if default font can't be found John W. Eaton <jwe@octave.org> parents: 9406 diff changeset	848 FT_UInt glyph_index, previous = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	849
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	850 std::string str = e.string_value ();
18100 6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17898 diff changeset	851 size_t n = str.length ();
6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17898 diff changeset	852 size_t curr = 0;
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	853 size_t idx = 0;
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	854 mbstate_t ps;
15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	855 memset (&ps, 0, sizeof (ps)); // Initialize state to 0.
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	856 wchar_t wc;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	857
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	858 text_renderer::string fs (str, font, xoffset, yoffset);
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	859
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	860 while (n > 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	861 {
21942 aab79a1885cc limit gnulib headers to liboctave/wrappers directory John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	862 size_t r = std::mbrtowc (&wc, str.data () + curr, n, &ps);
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	863
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	864 if (r > 0
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	865 && r != static_cast<size_t> (-1)
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	866 && r != static_cast<size_t> (-2))
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	867 {
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	868 n -= r;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	869 curr += r;
12965 22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices Ben Abbott <bpabbott@mac.com> parents: 12334 diff changeset	870
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	871 if (wc == L'\n')
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	872 {
20715 5b7643257978 Remove trailing whitespace at end of lines. Rik <rik@octave.org> parents: 20622 diff changeset	873 // Finish previous string in srtlist before processing
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	874 // the newline character
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	875 fs.set_y (line_yoffset + yoffset);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	876 fs.set_color (color);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	877 std::string s = str.substr (idx, curr - idx - 1);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	878 if (! s.empty ())
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	879 {
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	880 fs.set_string (s);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	881 strlist.push_back (fs);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	882 }
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	883 }
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	884
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	885 glyph_index = process_character (wc, previous);
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	886
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	887 if (wc == L'\n')
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	888 {
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	889 previous = 0;
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	890 // Start a new string in strlist
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	891 idx = curr;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	892 fs = text_renderer::string (str.substr (idx), font,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	893 line_xoffset, yoffset);
20715 5b7643257978 Remove trailing whitespace at end of lines. Rik <rik@octave.org> parents: 20622 diff changeset	894
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	895 }
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	896 else
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	897 previous = glyph_index;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	898 }
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	899 else
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	900 {
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	901 if (r != 0)
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	902 ::warning ("ft_text_renderer: failed to decode string `%s' with "
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	903 "locale `%s'", str.c_str (),
17898 8c33abdd2f9a maint: Avoid using NULL in C++ code. John W. Eaton <jwe@octave.org> parents: 17787 diff changeset	904 std::setlocale (LC_CTYPE, 0));
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	905 break;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	906 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	907 }
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	908
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	909 if (! fs.get_string ().empty ())
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	910 {
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	911 fs.set_y (line_yoffset + yoffset);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	912 fs.set_color (color);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	913 strlist.push_back (fs);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	914 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	915 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	916 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	917
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	918 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	919 ft_text_renderer::visit (text_element_list& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	920 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	921 // Save and restore (after processing the list) the current font and color.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	922
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	923 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	924 uint8NDArray saved_color (color);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	925
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	926 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	927
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	928 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	929 color = saved_color;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	930 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	931
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	932 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	933 ft_text_renderer::visit (text_element_subscript& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	934 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	935 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	936 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	937 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	938
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	939 set_font (font.get_name (), font.get_weight (), font.get_angle (),
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	940 font.get_size () - 2);
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	941
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	942 if (font.is_valid ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	943 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	944 int h = font.get_face ()->size->metrics.height >> 6;
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	945
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	946 // Shifting the baseline by 2/3 the font height seems to produce
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	947 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	948 yoffset -= (h * 2) / 3;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	949
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	950 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	951 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	952 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	953
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	954 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	955
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	956 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	957 // If line_yoffset changed, this means we moved to a new line; hence yoffset
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	958 // cannot be restored, because the saved value is not relevant anymore.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	959 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	960 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	961 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	962
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	963 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	964 ft_text_renderer::visit (text_element_superscript& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	965 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	966 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	967 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	968 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	969
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	970 set_font (font.get_name (), font.get_weight (), font.get_angle (),
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	971 font.get_size () - 2);
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	972
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	973 if (saved_font.is_valid ())
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	974 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	975 int s_asc = saved_font.get_face ()->size->metrics.ascender >> 6;
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	976
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	977 // Shifting the baseline by 2/3 base font ascender seems to produce
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	978 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	979 yoffset += (s_asc * 2) / 3;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	980
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	981 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	982 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	983 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	984
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	985 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	986
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	987 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	988 // If line_yoffset changed, this means we moved to a new line; hence yoffset
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	989 // cannot be restored, because the saved value is not relevant anymore.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	990 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	991 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	992 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	993
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	994 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	995 ft_text_renderer::visit (text_element_color& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	996 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	997 if (mode == MODE_RENDER)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	998 set_color (e.get_color ());
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	999 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1000
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1001 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1002 ft_text_renderer::visit (text_element_fontsize& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1003 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1004 double sz = e.get_fontsize ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1005
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1006 // FIXME: Matlab documentation says that the font size is expressed
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1007 // in the text object FontUnit.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1008
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1009 set_font (font.get_name (), font.get_weight (), font.get_angle (), sz);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1010
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1011 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1012 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1013 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1014
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1015 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1016 ft_text_renderer::visit (text_element_fontname& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1017 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1018 set_font (e.get_fontname (), font.get_weight (), font.get_angle (),
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1019 font.get_size ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1020
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1021 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1022 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1023 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1024
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1025 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1026 ft_text_renderer::visit (text_element_fontstyle& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1027 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1028 switch (e.get_fontstyle ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1029 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1030 case text_element_fontstyle::normal:
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1031 set_font (font.get_name (), "normal", "normal", font.get_size ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1032 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1033
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1034 case text_element_fontstyle::bold:
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1035 set_font (font.get_name (), "bold", "normal", font.get_size ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1036 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1037
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1038 case text_element_fontstyle::italic:
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1039 set_font (font.get_name (), "normal", "italic", font.get_size ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1040 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1041
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1042 case text_element_fontstyle::oblique:
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1043 set_font (font.get_name (), "normal", "oblique", font.get_size ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1044 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1045 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1046
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1047 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1048 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1049 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1050
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1051 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1052 ft_text_renderer::visit (text_element_symbol& e)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1053 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1054 uint32_t code = e.get_symbol_code ();
20715 5b7643257978 Remove trailing whitespace at end of lines. Rik <rik@octave.org> parents: 20622 diff changeset	1055
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1056 text_renderer::string fs (std::string ("-"), font, xoffset, yoffset);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1057
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1058 if (code != text_element_symbol::invalid_code && font.is_valid ())
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1059 {
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1060 process_character (code);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1061 fs.set_code (code);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1062 }
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1063 else if (font.is_valid ())
17327 fe6518a1d87c Move TeX symbol decoding into the lexer (bug #39831). Michael Goffioul <michael.goffioul@gmail.com> parents: 17324 diff changeset	1064 ::warning ("ignoring unknown symbol: %d", e.get_symbol ());
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1065
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1066 if (fs.get_code ())
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1067 {
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1068 fs.set_y (line_yoffset + yoffset);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1069 fs.set_color (color);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1070 strlist.push_back (fs);
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1071 }
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1072 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1073
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1074 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1075 ft_text_renderer::visit (text_element_combined& e)
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1076 {
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1077 int saved_xoffset = xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1078 int max_xoffset = xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1079
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1080 for (text_element_combined::iterator it = e.begin (); it != e.end (); ++it)
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1081 {
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1082 xoffset = saved_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1083 (it)->accept (this);
21782 2aef506f3fec use namespace for lo-mappers.h functions John W. Eaton <jwe@octave.org> parents: 21751 diff changeset	1084 max_xoffset = octave::math::max (xoffset, max_xoffset);
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1085 }
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1086
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1087 xoffset = max_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1088 }
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1089
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	1090 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1091 ft_text_renderer::reset (void)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1092 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1093 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1094 set_color (Matrix (1, 3, 0.0));
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1095 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1096
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1097 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1098 ft_text_renderer::set_color (const Matrix& c)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1099 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1100 if (c.numel () == 3)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1101 {
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1102 color(0) = static_cast<uint8_t> (c(0)*255);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1103 color(1) = static_cast<uint8_t> (c(1)*255);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	1104 color(2) = static_cast<uint8_t> (c(2)*255);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1105 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1106 else
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1107 ::warning ("ft_text_renderer::set_color: invalid color");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1108 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1109
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1110 uint8NDArray
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1111 ft_text_renderer::render (text_element *elt, Matrix& box, int rotation)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1112 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1113 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1114 elt->accept (*this);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	1115 compute_bbox ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1116 box = bbox;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1117
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1118 set_mode (MODE_RENDER);
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1119 // Clear the list of parsed strings
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1120 strlist.clear ();
caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1121
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	1122 if (pixels.numel () > 0)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1123 {
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	1124 elt->accept (*this);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1125
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	1126 switch (rotation)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1127 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1128 case ROTATION_0:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1129 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1130
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1131 case ROTATION_90:
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1132 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1133 Array<octave_idx_type> perm (dim_vector (3, 1));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1134 perm(0) = 0;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1135 perm(1) = 2;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1136 perm(2) = 1;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1137 pixels = pixels.permute (perm);
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	1138
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1139 Array<idx_vector> idx (dim_vector (3, 1));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1140 idx(0) = idx_vector (':');
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1141 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1142 idx(2) = idx_vector (':');
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1143 pixels = uint8NDArray (pixels.index (idx));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1144 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1145 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1146
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1147 case ROTATION_180:
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1148 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1149 Array<idx_vector> idx (dim_vector (3, 1));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1150 idx(0) = idx_vector (':');
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1151 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
21568 3d60ed163b70 maint: Eliminate bad spacing around '='. Rik <rik@octave.org> parents: 21334 diff changeset	1152 idx(2) = idx_vector (pixels.dim3 ()-1, -1, -1);
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1153 pixels = uint8NDArray (pixels.index (idx));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1154 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1155 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1156
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1157 case ROTATION_270:
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1158 {
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1159 Array<octave_idx_type> perm (dim_vector (3, 1));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1160 perm(0) = 0;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1161 perm(1) = 2;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1162 perm(2) = 1;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1163 pixels = pixels.permute (perm);
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	1164
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1165 Array<idx_vector> idx (dim_vector (3, 1));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1166 idx(0) = idx_vector (':');
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1167 idx(1) = idx_vector (':');
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1168 idx(2) = idx_vector (pixels.dim3 ()-1, -1, -1);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1169 pixels = uint8NDArray (pixels.index (idx));
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1170 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1171 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	1172 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1173 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1174
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1175 return pixels;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1176 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1177
16201 2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	1178 // Note:
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	1179 // x-extent accurately measures width of glyphs.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	1180 // y-extent is overly large because it is measured from baseline-to-baseline.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	1181 // Calling routines, such as ylabel, may need to account for this mismatch.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	1182
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1183 Matrix
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1184 ft_text_renderer::get_extent (text_element *elt, double rotation)
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1185 {
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1186 set_mode (MODE_BBOX);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1187 elt->accept (*this);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	1188 compute_bbox ();
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1189
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1190 Matrix extent (1, 2, 0.0);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1191
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1192 switch (rotation_to_mode (rotation))
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1193 {
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1194 case ROTATION_0:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1195 case ROTATION_180:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1196 extent(0) = bbox(2);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1197 extent(1) = bbox(3);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1198 break;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1199
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1200 case ROTATION_90:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1201 case ROTATION_270:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1202 extent(0) = bbox(3);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1203 extent(1) = bbox(2);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1204 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1205
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1206 return extent;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1207 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1208
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1209 Matrix
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1210 ft_text_renderer::get_extent (const std::string& txt, double rotation,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1211 const caseless_str& interpreter)
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1212 {
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	1213 text_element *elt = text_parser::parse (txt, interpreter);
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1214 Matrix extent = get_extent (elt, rotation);
63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1215 delete elt;
13141 e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 12969 diff changeset	1216
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1217 return extent;
63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1218 }
63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	1219
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1220 int
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1221 ft_text_renderer::rotation_to_mode (double rotation) const
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1222 {
17526 4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1223 // Clip rotation to range [0, 360]
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1224 while (rotation < 0)
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1225 rotation += 360.0;
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1226 while (rotation > 360.0)
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1227 rotation -= 360.0;
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	1228
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1229 if (rotation == 0.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1230 return ROTATION_0;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1231 else if (rotation == 90.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1232 return ROTATION_90;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1233 else if (rotation == 180.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1234 return ROTATION_180;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1235 else if (rotation == 270.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1236 return ROTATION_270;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1237 else
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1238 return ROTATION_0;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1239 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	1240
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1241 void
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1242 ft_text_renderer::text_to_pixels (const std::string& txt,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1243 uint8NDArray& pxls, Matrix& box,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1244 int _halign, int valign, double rotation,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1245 const caseless_str& interpreter,
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1246 bool handle_rotation)
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1247 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1248 int rot_mode = rotation_to_mode (rotation);
13141 e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 12969 diff changeset	1249
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	1250 halign = _halign;
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1251
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	1252 text_element *elt = text_parser::parse (txt, interpreter);
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1253 pxls = render (elt, box, rot_mode);
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1254 delete elt;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1255
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1256 if (pxls.is_empty ())
20974 1edf15793cac maint: Use is_empty rather than "numel () == 0" for clarity. Rik <rik@octave.org> parents: 20956 diff changeset	1257 return; // nothing to render
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1258
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1259 switch (halign)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1260 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1261 case 1:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1262 box(0) = -box(2)/2;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1263 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1264
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1265 case 2:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1266 box(0) = -box(2);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1267 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1268
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1269 default:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1270 box(0) = 0;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1271 break;
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1272 }
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1273
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1274 switch (valign)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1275 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1276 case 1:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1277 box(1) = -box(3)/2;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1278 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1279
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1280 case 2:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1281 box(1) = -box(3);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1282 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1283
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1284 case 3:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1285 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1286
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1287 case 4:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1288 box(1) = -box(3)-box(1);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1289 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1290
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1291 default:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1292 box(1) = 0;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1293 break;
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1294 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1295
20622 caa5dabc7913 Let the freetype renderer return a list of parsed substrings (bug #31468) Pantxo Diribarne <pantxo.diribarne@gmail.com> parents: 20471 diff changeset	1296 if (handle_rotation)
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1297 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1298 switch (rot_mode)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1299 {
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1300 case ROTATION_90:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1301 std::swap (box(0), box(1));
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1302 std::swap (box(2), box(3));
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1303 box(0) = -box(0)-box(2);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1304 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1305
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1306 case ROTATION_180:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1307 box(0) = -box(0)-box(2);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1308 box(1) = -box(1)-box(3);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1309 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1310
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1311 case ROTATION_270:
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1312 std::swap (box(0), box(1));
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1313 std::swap (box(2), box(3));
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1314 box(1) = -box(1)-box(3);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1315 break;
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1316 }
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1317 }
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1318 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1319
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1320 ft_text_renderer::ft_font::ft_font (const ft_font& ft)
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1321 : text_renderer::font (ft), face (0)
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1322 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1323 #if defined (HAVE_FT_REFERENCE_FACE)
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1324 FT_Face ft_face = ft.get_face ();
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1325
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1326 if (ft_face && FT_Reference_Face (ft_face) == 0)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1327 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1328 #endif
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1329 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1330
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1331 ft_text_renderer::ft_font&
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1332 ft_text_renderer::ft_font::operator = (const ft_font& ft)
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1333 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1334 if (&ft != this)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1335 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1336 text_renderer::font::operator = (ft);
67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1337
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1338 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1339 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1340 FT_Done_Face (face);
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1341 face = 0;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1342 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1343
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1344 #if defined (HAVE_FT_REFERENCE_FACE)
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1345 FT_Face ft_face = ft.get_face ();
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1346
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1347 if (ft_face && FT_Reference_Face (ft_face) == 0)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1348 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1349 #endif
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1350 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1351
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1352 return *this;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1353 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1354
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1355 FT_Face
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1356 ft_text_renderer::ft_font::get_face (void) const
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1357 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1358 if (! face && ! name.empty ())
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1359 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1360 face = ft_manager::get_font (name, weight, angle, size);
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1361
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1362 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1363 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1364 if (FT_Set_Char_Size (face, 0, size*64, 0, 0))
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1365 ::warning ("ft_text_renderer: unable to set font size to %g", size);
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1366 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1367 else
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1368 ::warning ("ft_text_renderer: unable to load appropriate font");
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1369 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1370
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1371 return face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1372 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1373
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1374 }
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1375
20945 9d9270e2f98f eliminate comments after preprocessor conditionals John W. Eaton <jwe@octave.org> parents: 20715 diff changeset	1376 #endif
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1377
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1378 namespace octave
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1379 {
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1380 base_text_renderer *
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1381 make_ft_text_renderer (void)
71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1382 {
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1383 #if defined (HAVE_FREETYPE)
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1384 return new ft_text_renderer ();
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1385 #else
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1386 return 0;
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1387 #endif
22326 71dd9d5a5ecd move more new classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	1388 }
21209 67d2965af0b5 revamp text rendering classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	1389 }

Mercurial > octave

annotate libinterp/corefcn/ft-text-renderer.cc @ 22326:71dd9d5a5ecd