octave: libinterp/corefcn/txt-eng-ft.cc annotate

annotate libinterp/corefcn/txt-eng-ft.cc @ 17744:d63878346099

maint: Update copyright notices for release.

author	John W. Eaton <jwe@octave.org>
date	Wed, 23 Oct 2013 22:09:27 -0400
parents	4f1dd8a980df
children	175b392e91fe

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
17744 d63878346099 maint: Update copyright notices for release. John W. Eaton <jwe@octave.org> parents: 17526 diff changeset	3 Copyright (C) 2009-2013 Michael Goffioul
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	4
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	5 This file is part of Octave.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	6
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	7 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	8 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	9 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	10 option) any later version.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	11
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	12 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	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	14 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	15 for more details.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	16
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	17 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	18 along with Octave; see the file COPYING. If not, see
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	19 <http://www.gnu.org/licenses/>.
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	20
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 #ifdef HAVE_CONFIG_H
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	24 #include <config.h>
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	25 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	26
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	27 #if defined (HAVE_FREETYPE)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	28
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	29 #if defined (HAVE_FONTCONFIG)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	30 #include <fontconfig/fontconfig.h>
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	31 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	32
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	33 #include <clocale>
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	34 #include <cwchar>
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	35 #include <iostream>
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	36 #include <map>
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	37 #include <utility>
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	38
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	39 #include "singleton-cleanup.h"
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	40
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	41 #include "error.h"
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	42 #include "pr-output.h"
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	43 #include "txt-eng-ft.h"
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	44
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	45 // 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	46 // combination.
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	47
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	48 static void
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	49 gripe_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	50 {
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	51 warning_with_id ("Octave:missing-glyph",
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	52 "ft_render: skipping missing glyph for character '%x'",
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	53 c);
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	54 }
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	55
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	56 static void
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	57 gripe_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	58 {
d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	59 warning_with_id ("Octave:glyph-render",
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	60 "ft_render: unable to render glyph for character '%x'",
13317 d2b799e3178a allow warnings about missing glyphs to be disabled John W. Eaton <jwe@octave.org> parents: 13141 diff changeset	61 c);
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
13730 a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	64 #ifdef _MSC_VER
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	65 // 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	66 // 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	67 // 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	68 // use the imported one instead.
13730 a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	69 #include "PermMatrix.h"
a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	70 #endif
a2c74b5c02de [MSVC] Prevent duplicate symbol. Michael Goffioul <michael.goffioul@gmail.com> parents: 13317 diff changeset	71
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	72 // Forward declaration
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	73 static void ft_face_destroyed (void* object);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	74
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	75 class
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	76 ft_manager
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	77 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	78 public:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	79 static bool instance_ok (void)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	80 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	81 bool retval = true;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	82
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	83 if (! instance)
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	84 {
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	85 instance = new ft_manager ();
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	86
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	87 if (instance)
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	88 singleton_cleanup_list::add (cleanup_instance);
e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	89 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	90
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	91 if (! instance)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	92 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	93 ::error ("unable to create ft_manager!");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	94
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	95 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	96 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	97
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	98 return retval;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	99 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	100
13992 e1f76bfe0452 apply singleton_cleanup to a few more classes John W. Eaton <jwe@octave.org> parents: 13730 diff changeset	101 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	102
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	103 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	104 const std::string& angle, double size)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	105 { return (instance_ok ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	106 ? instance->do_get_font (name, weight, angle, size)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	107 : 0); }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	108
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	109 static void font_destroyed (FT_Face face)
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	110 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	111 if (instance_ok ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	112 instance->do_font_destroyed (face);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	113 }
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	114
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	115 private:
12122 f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	116
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	117 static ft_manager *instance;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	118
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	119 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	120 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	121
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	122 // Cache the fonts loaded by freetype. This cache only contains
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	123 // weak references to the fonts, strong references are only present
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	124 // in class ft_render.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	125 ft_cache cache;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	126
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	127 private:
12122 f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	128
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	129 // No copying!
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	130
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	131 ft_manager (const ft_manager&);
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	132
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	133 ft_manager& operator = (const ft_manager&);
f4689107dd8c Explicitly disallow copying in some classes. Pascal Dupuis <Pascal.Dupuis@uclouvain.be> parents: 11586 diff changeset	134
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	135 ft_manager (void)
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	136 : library (), freetype_initialized (false), fontconfig_initialized (false)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	137 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	138 if (FT_Init_FreeType (&library))
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	139 ::error ("unable to initialize freetype library");
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	140 else
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	141 freetype_initialized = true;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	142
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	143 #if defined (HAVE_FONTCONFIG)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	144 if (! FcInit ())
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	145 ::error ("unable to initialize fontconfig library");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	146 else
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	147 fontconfig_initialized = true;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	148 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	149 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	150
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	151 ~ft_manager (void)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	152 {
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	153 if (freetype_initialized)
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	154 FT_Done_FreeType (library);
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	155
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	156 #if defined (HAVE_FONTCONFIG)
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	157 // FIXME: Skip the call to FcFini because it can trigger the assertion
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	158 //
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	159 // octave: fccache.c:507: FcCacheFini: Assertion 'fcCacheChains[i] == ((void *)0)' failed.
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	160 //
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	161 // if (fontconfig_initialized)
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	162 // FcFini ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	163 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	164 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	165
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	166
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	167 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	168 const std::string& angle, double size)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	169 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	170 FT_Face retval = 0;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	171
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	172 #if HAVE_FT_REFERENCE_FACE
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	173 // Look first into the font cache, then use fontconfig. If the font
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	174 // is present in the cache, simply add a reference and return it.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	175
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	176 ft_key key (name + ":" + weight + ":" + angle, size);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	177 ft_cache::const_iterator it = cache.find (key);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	178
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	179 if (it != cache.end ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	180 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	181 FT_Reference_Face (it->second);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	182 return it->second;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	183 }
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	184 #endif
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	185
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	186 std::string file;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	187
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	188 #if defined (HAVE_FONTCONFIG)
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	189 if (fontconfig_initialized)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	190 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	191 int fc_weight, fc_angle;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	192
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	193 if (weight == "bold")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	194 fc_weight = FC_WEIGHT_BOLD;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	195 else if (weight == "light")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	196 fc_weight = FC_WEIGHT_LIGHT;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	197 else if (weight == "demi")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	198 fc_weight = FC_WEIGHT_DEMIBOLD;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	199 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	200 fc_weight = FC_WEIGHT_NORMAL;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	201
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	202 if (angle == "italic")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	203 fc_angle = FC_SLANT_ITALIC;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	204 else if (angle == "oblique")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	205 fc_angle = FC_SLANT_OBLIQUE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	206 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	207 fc_angle = FC_SLANT_ROMAN;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	208
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	209 FcPattern *pat = FcPatternCreate ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	210
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	211 FcPatternAddString (pat, FC_FAMILY,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	212 (reinterpret_cast<const FcChar8*>
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	213 (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	214
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	215 FcPatternAddInteger (pat, FC_WEIGHT, fc_weight);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	216 FcPatternAddInteger (pat, FC_SLANT, fc_angle);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	217 FcPatternAddDouble (pat, FC_PIXEL_SIZE, size);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	218
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	219 if (FcConfigSubstitute (0, pat, FcMatchPattern))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	220 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	221 FcResult res;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	222 FcPattern *match;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	223
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	224 FcDefaultSubstitute (pat);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	225 match = FcFontMatch (0, pat, &res);
9833 637fa784d102 Allow more font matches godfrey@isl.Stanford.EDU parents: 9619 diff changeset	226
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	227 // FIXME: originally, this test also required that
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	228 // res != FcResultNoMatch. Is that really needed?
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	229 if (match)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	230 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	231 unsigned char *tmp;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	232
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	233 FcPatternGetString (match, FC_FILE, 0, &tmp);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	234 file = reinterpret_cast<char*> (tmp);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	235 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	236 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	237 ::warning ("could not match any font: %s-%s-%s-%g",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	238 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	239 size);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	240
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	241 if (match)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	242 FcPatternDestroy (match);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	243 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	244
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	245 FcPatternDestroy (pat);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	246 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	247 #endif
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	248
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	249 if (file.empty ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	250 {
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	251 #ifdef __WIN32__
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	252 file = "C:/WINDOWS/Fonts/verdana.ttf";
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	253 #else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	254 // FIXME: find a "standard" font for UNIX platforms
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	255 #endif
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	256 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	257
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	258 if (! file.empty ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	259 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	260 if (FT_New_Face (library, file.c_str (), 0, &retval))
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	261 ::warning ("ft_manager: unable to load font: %s", file.c_str ());
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	262 #if HAVE_FT_REFERENCE_FACE
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	263 else
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	264 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	265 // Install a finalizer to notify ft_manager that the font is
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	266 // being destroyed. The class ft_manager only keeps weak
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	267 // references to font objects.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	268
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	269 retval->generic.data = new ft_key (key);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	270 retval->generic.finalizer = ft_face_destroyed;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	271
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	272 // Insert loaded font into the cache.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	273
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	274 cache[key] = retval;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	275 }
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	276 #endif
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	277 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	278
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	279 return retval;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	280 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	281
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	282 void do_font_destroyed (FT_Face face)
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	283 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	284 if (face->generic.data)
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	285 {
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	286 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	287
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	288 cache.erase (*pkey);
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	289 delete pkey;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	290 face->generic.data = 0;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	291 }
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	292 }
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	293
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	294 private:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	295 FT_Library library;
14003 1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	296 bool freetype_initialized;
1555c5a177c9 better fix for fontconfig segfault John W. Eaton <jwe@octave.org> parents: 13999 diff changeset	297 bool fontconfig_initialized;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	298 };
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	299
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	300 ft_manager* ft_manager::instance = 0;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	301
17270 ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	302 static void
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	303 ft_face_destroyed (void* object)
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	304 { ft_manager::font_destroyed (reinterpret_cast<FT_Face> (object)); }
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager. Michael Goffioul <michael.goffioul@gmail.com> parents: 17269 diff changeset	305
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	306 // ---------------------------------------------------------------------------
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	307
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	308 ft_render::ft_render (void)
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	309 : text_processor (), font (), bbox (1, 4, 0.0), halign (0), xoffset (0),
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	310 line_yoffset (0), yoffset (0), mode (MODE_BBOX),
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	311 color (dim_vector (1, 3), 0)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	312 {
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
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	315 ft_render::~ft_render (void)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	316 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	317 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	318
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	319 void
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	320 ft_render::set_font (const std::string& name, const std::string& weight,
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	321 const std::string& angle, double size)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	322 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	323 // FIXME: take "fontunits" into account
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	324
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	325 font = ft_font (name, weight, angle, size, 0);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	326 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	327
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	328 void
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	329 ft_render::push_new_line (void)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	330 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	331 switch (mode)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	332 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	333 case MODE_BBOX:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	334 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	335 // Create a new bbox entry based on the current font.
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	336
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	337 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	338
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	339 if (face)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	340 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	341 int asc = face->size->metrics.ascender >> 6;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	342 int desc = face->size->metrics.descender >> 6;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	343 int h = face->size->metrics.height >> 6;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	344
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	345 Matrix bb (1, 5, 0.0);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	346
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	347 bb(1) = desc;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	348 bb(3) = asc - desc;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	349 bb(4) = h;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	350
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	351 line_bbox.push_back (bb);
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	352
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	353 xoffset = yoffset = 0;
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	354 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	355 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	356 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	357
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	358 case MODE_RENDER:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	359 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	360 // Move to the next line bbox, adjust xoffset based on alignment
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	361 // and yoffset based on the old and new line bbox.
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	362
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	363 Matrix old_bbox = line_bbox.front ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	364 line_bbox.pop_front ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	365 Matrix new_bbox = line_bbox.front ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	366
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	367 xoffset = compute_line_xoffset (new_bbox);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	368 line_yoffset += (old_bbox(1) - (new_bbox(1) + new_bbox(3)));
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	369 yoffset = 0;
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	370 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	371 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	372 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	373 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	374
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	375 int
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	376 ft_render::compute_line_xoffset (const Matrix& lb) const
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	377 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	378 if (! bbox.is_empty ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	379 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	380 switch (halign)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	381 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	382 case 0:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	383 return 0;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	384 case 1:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	385 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	386 case 2:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	387 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	388 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	389 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	390
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	391 return 0;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	392 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	393
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	394 void
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	395 ft_render::compute_bbox (void)
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	396 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	397 // 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	398 // 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	399
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	400 bbox = Matrix ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	401
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	402 switch (line_bbox.size ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	403 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	404 case 0:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	405 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	406 case 1:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	407 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	408 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	409 default:
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	410 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	411 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	412 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	413 if (bbox.is_empty ())
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	414 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	415 else
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	416 {
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	417 bbox(1) -= (*it)(3);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	418 bbox(3) += (*it)(3);
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	419 bbox(2) = xmax (bbox(2), (*it)(2));
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	420 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	421 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	422 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	423 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	424 }
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	425
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	426 void
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	427 ft_render::update_line_bbox (void)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	428 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	429 // Called after a font change, when in MODE_BBOX mode, to update the
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	430 // current line bbox with the new font metrics. This also includes the
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	431 // 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	432 // the line's baseline.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	433
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	434 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	435 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	436 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	437 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	438
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	439 Matrix& bb = line_bbox.front ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	440
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	441 if ((yoffset + desc) < bb(1))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	442 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	443 // 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	444
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	445 int delta = bb(1) - (yoffset + desc);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	446
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	447 bb(1) -= delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	448 bb(3) += delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	449 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	450
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	451 if ((yoffset + asc) > (bb(1) + bb(3)))
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	452 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	453 // 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	454
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	455 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	456
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	457 bb(3) += delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	458 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	459 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	460 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	461
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	462 void
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	463 ft_render::set_mode (int m)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	464 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	465 mode = m;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	466
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	467 switch (mode)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	468 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	469 case MODE_BBOX:
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	470 xoffset = line_yoffset = yoffset = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	471 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	472 line_bbox.clear ();
cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	473 push_new_line ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	474 break;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	475 case MODE_RENDER:
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	476 if (bbox.numel () != 4)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	477 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	478 ::warning ("ft_render: invalid bounding box, cannot render");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	479
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	480 xoffset = line_yoffset = yoffset = 0;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	481 pixels = uint8NDArray ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	482 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	483 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	484 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	485 pixels = uint8NDArray (dim_vector (4, bbox(2), bbox(3)),
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	486 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	487 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	488 line_yoffset = -bbox(1)-1;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	489 yoffset = 0;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	490 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	491 break;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	492 default:
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	493 ::error ("ft_render: invalid mode '%d'", mode);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	494 break;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	495 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	496 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	497
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	498 FT_UInt
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	499 ft_render::process_character (FT_ULong code, FT_UInt previous)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	500 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	501 FT_Face face = font.get_face ();
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	502 FT_UInt glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	503
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	504 if (face)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	505 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	506 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	507
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	508 if (code != '\n'
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	509 && (! glyph_index
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	510 \|\| 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	511 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	512 glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	513 gripe_missing_glyph (code);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	514 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	515 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	516 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	517 switch (mode)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	518 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	519 case MODE_RENDER:
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	520 if (code == '\n')
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	521 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	522 glyph_index = FT_Get_Char_Index (face, ' ');
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	523 if (!glyph_index \|\| 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	524 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	525 glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	526 gripe_missing_glyph (' ');
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	527 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	528 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	529 push_new_line ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	530 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	531 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	532 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	533 glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	534 gripe_glyph_render (code);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	535 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	536 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	537 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	538 FT_Bitmap& bitmap = face->glyph->bitmap;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	539 int x0, y0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	540
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	541 if (previous)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	542 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	543 FT_Vector delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	544
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	545 FT_Get_Kerning (face, previous, glyph_index, FT_KERNING_DEFAULT, &delta);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	546 xoffset += (delta.x >> 6);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	547 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	548
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	549 x0 = xoffset + face->glyph->bitmap_left;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	550 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	551
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	552 // 'w' seems to have a negative -1
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	553 // face->glyph->bitmap_left, this is so we don't
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	554 // index out of bound, and assumes we we allocated
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	555 // 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	556 if (x0 < 0)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	557 x0 = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	558
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	559 for (int r = 0; r < bitmap.rows; r++)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	560 for (int c = 0; c < bitmap.width; c++)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	561 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	562 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	563 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	564 \|\| y0-r < 0 \|\| y0-r >= pixels.dim3 ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	565 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	566 //::warning ("ft_render: pixel out of bound (char=%d, (x,y)=(%d,%d), (w,h)=(%d,%d)",
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	567 // 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	568 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	569 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	570 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	571 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	572 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	573 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	574 pixels(3, x0+c, y0-r) = pix;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	575 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	576 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	577
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	578 xoffset += (face->glyph->advance.x >> 6);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	579 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	580 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	581
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	582 case MODE_BBOX:
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	583 if (code == '\n')
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	584 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	585 glyph_index = FT_Get_Char_Index (face, ' ');
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	586 if (! glyph_index
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	587 \|\| 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	588 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	589 glyph_index = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	590 gripe_missing_glyph (' ');
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	591 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	592 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	593 push_new_line ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	594 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	595 else
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	596 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	597 Matrix& bb = line_bbox.back ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	598
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	599 // 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	600 // This usually means moving a bit backward before adding
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	601 // the next glyph. That is, "delta.x" is usually < 0.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	602 if (previous)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	603 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	604 FT_Vector delta;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	605
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	606 FT_Get_Kerning (face, previous, glyph_index,
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	607 FT_KERNING_DEFAULT, &delta);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	608
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	609 xoffset += (delta.x >> 6);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	610 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	611
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	612 // Extend current X offset box by the width of the current
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	613 // glyph. Then extend the line bounding box if necessary.
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	614
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	615 xoffset += (face->glyph->advance.x >> 6);
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	616 bb(2) = xmax (bb(2), xoffset);
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	617 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	618 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	619 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	620 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	621 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	622
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	623 return glyph_index;
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
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	626 void
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	627 ft_render::visit (text_element_string& e)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	628 {
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	629 if (font.is_valid ())
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	630 {
9616 2093499ec9f4 avoid crash if default font can't be found John W. Eaton <jwe@octave.org> parents: 9406 diff changeset	631 FT_UInt glyph_index, previous = 0;
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	632
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	633 std::string str = e.string_value ();
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	634 size_t n = str.length (), curr = 0;
17377 15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	635 mbstate_t ps;
15e2ad6372f7 maint: Tweaks to remove compiler warnings. Rik <rik@octave.org> parents: 17352 diff changeset	636 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	637 wchar_t wc;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	638
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	639 while (n > 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	640 {
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	641 size_t r = gnulib::mbrtowc (&wc, str.data () + curr, n, &ps);
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	642
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	643 if (r > 0
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	644 && 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	645 && 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	646 {
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	647 n -= r;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	648 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	649
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	650 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	651
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	652 if (wc == L'\n')
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	653 previous = 0;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	654 else
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	655 previous = glyph_index;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	656 }
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	657 else
17352 4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	658 {
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	659 if (r != 0)
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	660 ::warning ("ft_render: failed to decode string `%s' with "
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	661 "locale `%s'", str.c_str (),
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	662 std::setlocale (LC_CTYPE, NULL));
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	663 break;
4a348443de9b Support multibyte characters in Freetype-based renderer (bug #31596). Michael Goffioul <michael.goffioul@gmail.com> parents: 17330 diff changeset	664 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	665 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	666 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	667 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	668
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	669 void
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	670 ft_render::visit (text_element_list& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	671 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	672 // 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	673
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	674 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	675 uint8NDArray saved_color (color);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	676
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	677 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	678
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	679 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	680 color = saved_color;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	681 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	682
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	683 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	684 ft_render::visit (text_element_subscript& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	685 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	686 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	687 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	688 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	689
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	690 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	691 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	692
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	693 if (font.is_valid ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	694 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	695 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	696
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	697 // 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	698 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	699 yoffset -= (h * 2) / 3;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	700
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	701 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	702 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	703 }
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 text_processor::visit (e);
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 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	708 // 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	709 // 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	710 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	711 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	712 }
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 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	715 ft_render::visit (text_element_superscript& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	716 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	717 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	718 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	719 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	720
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	721 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	722 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	723
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	724 if (saved_font.is_valid ())
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	725 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	726 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	727
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	728 // 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	729 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	730 yoffset += (s_asc * 2) / 3;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	731
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	732 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	733 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	734 }
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 text_processor::visit (e);
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 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	739 // 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	740 // 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	741 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	742 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	743 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	744
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	745 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	746 ft_render::visit (text_element_color& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	747 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	748 if (mode == MODE_RENDER)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	749 set_color (e.get_color ());
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	750 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	751
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	752 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	753 ft_render::visit (text_element_fontsize& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	754 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	755 double sz = e.get_fontsize ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	756
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	757 // 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	758 // in the text object FontUnit.
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	759
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	760 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	761
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	762 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	763 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	764 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	765
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	766 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	767 ft_render::visit (text_element_fontname& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	768 {
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	769 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	770 font.get_size ());
17272 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 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	773 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	774 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	775
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	776 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	777 ft_render::visit (text_element_fontstyle& e)
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 switch (e.get_fontstyle ())
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 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	782 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	783 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	784 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	785 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	786 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	787 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	788 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	789 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	790 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	791 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	792 break;
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	793 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	794
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	795 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	796 update_line_bbox ();
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
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	799 void
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	800 ft_render::visit (text_element_symbol& e)
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	801 {
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	802 uint32_t code = e.get_symbol_code ();
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	803
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	804 if (code != text_element_symbol::invalid_code && font.is_valid ())
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	805 process_character (code);
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	806 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	807 ::warning ("ignoring unknown symbol: %d", e.get_symbol ());
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	808 }
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	809
8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	810 void
17274 0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	811 ft_render::visit (text_element_combined& e)
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	812 {
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	813 int saved_xoffset = xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	814 int max_xoffset = xoffset;
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 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	817 {
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	818 xoffset = saved_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	819 (it)->accept (this);
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	820 max_xoffset = xmax (xoffset, max_xoffset);
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	821 }
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	822
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	823 xoffset = max_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	824 }
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	825
0a09d4b40767 Combine successive TeX super- and subscript elements. Michael Goffioul <michael.goffioul@gmail.com> parents: 17272 diff changeset	826 void
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	827 ft_render::reset (void)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	828 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	829 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	830 set_color (Matrix (1, 3, 0.0));
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	831 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	832
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	833 void
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	834 ft_render::set_color (Matrix c)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	835 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	836 if (c.numel () == 3)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	837 {
17272 8ce6cdd272eb Support TeX elements in FreeType renderer. Michael Goffioul <michael.goffioul@gmail.com> parents: 17271 diff changeset	838 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	839 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	840 color(2) = static_cast<uint8_t> (c(2)*255);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	841 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	842 else
9616 2093499ec9f4 avoid crash if default font can't be found John W. Eaton <jwe@octave.org> parents: 9406 diff changeset	843 ::warning ("ft_render::set_color: invalid color");
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	844 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	845
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	846 uint8NDArray
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	847 ft_render::render (text_element* elt, Matrix& box, int rotation)
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	848 {
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	849 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	850 elt->accept (*this);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	851 compute_bbox ();
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	852 box = bbox;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	853
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	854 set_mode (MODE_RENDER);
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	855 if (pixels.numel () > 0)
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	856 {
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	857 elt->accept (*this);
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	858
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	859 switch (rotation)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	860 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	861 case ROTATION_0:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	862 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	863 case ROTATION_90:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	864 {
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	865 Array<octave_idx_type> perm (dim_vector (3, 1));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	866 perm(0) = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	867 perm(1) = 2;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	868 perm(2) = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	869 pixels = pixels.permute (perm);
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	870
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	871 Array<idx_vector> idx (dim_vector (3, 1));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	872 idx(0) = idx_vector (':');
14846 460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	873 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	874 idx(2) = idx_vector (':');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	875 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	876 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	877 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	878 case ROTATION_180:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	879 {
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	880 Array<idx_vector> idx (dim_vector (3, 1));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	881 idx(0) = idx_vector (':');
14846 460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	882 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	883 idx(2)= idx_vector (pixels.dim3 ()-1, -1, -1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	884 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	885 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	886 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	887 case ROTATION_270:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	888 {
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	889 Array<octave_idx_type> perm (dim_vector (3, 1));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	890 perm(0) = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	891 perm(1) = 2;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	892 perm(2) = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	893 pixels = pixels.permute (perm);
9406 c0c23dbbade7 Improve error handling in text rendering. Michael Goffioul <michael.goffioul@gmail.com> parents: 9405 diff changeset	894
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	895 Array<idx_vector> idx (dim_vector (3, 1));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	896 idx(0) = idx_vector (':');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	897 idx(1) = idx_vector (':');
14846 460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	898 idx(2) = idx_vector (pixels.dim3 ()-1, -1, -1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	899 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	900 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	901 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 9833 diff changeset	902 }
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	903 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	904
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	905 return pixels;
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	906 }
4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	907
16201 2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	908 // Note:
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461) Rik <rik@octave.org> parents: 15467 diff changeset	909 // 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	910 // 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	911 // 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	912
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	913 Matrix
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	914 ft_render::get_extent (text_element *elt, double rotation)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	915 {
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	916 set_mode (MODE_BBOX);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	917 elt->accept (*this);
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	918 compute_bbox ();
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	919
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	920 Matrix extent (1, 2, 0.0);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	921
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	922 switch (rotation_to_mode (rotation))
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	923 {
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	924 case ROTATION_0:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	925 case ROTATION_180:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	926 extent(0) = bbox(2);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	927 extent(1) = bbox(3);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	928 break;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	929 case ROTATION_90:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	930 case ROTATION_270:
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	931 extent(0) = bbox(3);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	932 extent(1) = bbox(2);
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	933 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	934
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	935 return extent;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	936 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	937
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	938 Matrix
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	939 ft_render::get_extent (const std::string& txt, double rotation,
5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	940 const caseless_str& interpreter)
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	941 {
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	942 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	943 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	944 delete elt;
13141 e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 12969 diff changeset	945
12334 63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	946 return extent;
63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	947 }
63dc132a1000 Move axes labels and title positioning to axes::properties Konstantinos Poulios <logari81@gmail.com> parents: 12225 diff changeset	948
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	949 int
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	950 ft_render::rotation_to_mode (double rotation) const
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	951 {
17526 4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	952 // Clip rotation to range [0, 360]
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	953 while (rotation < 0)
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	954 rotation += 360.0;
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	955 while (rotation > 360.0)
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	956 rotation -= 360.0;
4f1dd8a980df Clip OpenGL text rotations to range [0,360]. Rik <rik@octave.org> parents: 17377 diff changeset	957
10402 9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	958 if (rotation == 0.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	959 return ROTATION_0;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	960 else if (rotation == 90.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	961 return ROTATION_90;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	962 else if (rotation == 180.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	963 return ROTATION_180;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	964 else if (rotation == 270.0)
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	965 return ROTATION_270;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	966 else
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	967 return ROTATION_0;
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	968 }
9f2bf537a651 Implement text extent property Michael Goffioul <michael.goffioul@gmail.com> parents: 10350 diff changeset	969
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	970 void
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	971 ft_render::text_to_pixels (const std::string& txt,
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	972 uint8NDArray& pixels_, Matrix& box,
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	973 int _halign, int valign, double rotation,
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	974 const caseless_str& interpreter)
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	975 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	976 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	977
17271 cb7233cfbf43 Prepare base text rendering code for full TeX support. Michael Goffioul <michael.goffioul@gmail.com> parents: 17270 diff changeset	978 halign = _halign;
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	979
17269 5b088598df1d Add simple TeX parser based on flex/bison. Michael Goffioul <michael.goffioul@gmail.com> parents: 16892 diff changeset	980 text_element *elt = text_parser::parse (txt, interpreter);
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	981 pixels_ = render (elt, box, rot_mode);
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	982 delete elt;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	983
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	984 if (pixels_.numel () == 0)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	985 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	986 // nothing to render
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	987 return;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	988 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	989
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	990 switch (halign)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	991 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	992 default: box(0) = 0; break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	993 case 1: box(0) = -box(2)/2; break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	994 case 2: box(0) = -box(2); break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	995 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	996 switch (valign)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	997 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	998 default: box(1) = 0; break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	999 case 1: box(1) = -box(3)/2; break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1000 case 2: box(1) = -box(3); break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1001 case 3: break;
16206 9ba5c5ed3aeb Add new verticalalignment option 'cap' for OpenGL plotting. Rik <rik@octave.org> parents: 16201 diff changeset	1002 case 4: box(1) = -box(3)-box(1); break;
11455 2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1003 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1004
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1005 switch (rot_mode)
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1006 {
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1007 case ROTATION_90:
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1008 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1009 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1010 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1011 break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1012 case ROTATION_180:
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1013 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1014 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1015 break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1016 case ROTATION_270:
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1017 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1018 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1019 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1020 break;
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1021 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1022 }
2be9e22796d2 improvements in text-extent calculation Konstantinos Poulios <logari81@googlemail.com> parents: 10553 diff changeset	1023
17330 219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1024 ft_render::ft_font::ft_font (const ft_font& ft)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1025 : name (ft.name), weight (ft.weight), angle (ft.angle), size (ft.size),
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1026 face (0)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1027 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1028 #if HAVE_FT_REFERENCE_FACE
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1029 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	1030
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1031 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	1032 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1033 #endif
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1034 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1035
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1036 ft_render::ft_font&
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1037 ft_render::ft_font::operator = (const ft_font& ft)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1038 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1039 if (&ft != this)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1040 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1041 name = ft.name;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1042 weight = ft.weight;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1043 angle = ft.angle;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1044 size = ft.size;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1045 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1046 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1047 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	1048 face = 0;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1049 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1050
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1051 #if HAVE_FT_REFERENCE_FACE
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1052 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	1053
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1054 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	1055 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1056 #endif
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1057 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1058
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1059 return *this;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1060 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1061
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1062 FT_Face
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1063 ft_render::ft_font::get_face (void) const
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1064 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1065 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	1066 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1067 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	1068
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1069 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1070 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1071 if (FT_Set_Char_Size (face, 0, size*64, 0, 0))
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1072 ::warning ("ft_render: unable to set font size to %g", size);
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1073 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1074 else
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1075 ::warning ("ft_render: unable to load appropriate font");
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1076 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1077
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1078 return face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1079 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823). Michael Goffioul <michael.goffioul@gmail.com> parents: 17327 diff changeset	1080
9403 4af6e29449c1 [mq]: graphics_text_engine Michael Goffioul <michael.goffioul@gmail.com> parents: diff changeset	1081 #endif // HAVE_FREETYPE

Mercurial > octave

annotate libinterp/corefcn/txt-eng-ft.cc @ 17744:d63878346099