Mercurial > octave

annotate libinterp/corefcn/txt-eng-ft.cc @ 17330:219552139c18

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Allow to compile with older freetype on RHEL5 (bug #39823). * configure.ac: Check for FT_Reference_Face in freetype. * libinterp/corefcn/txt-eng-ft.h (ft_render::ft_font::name, ft_render::ft_font::weight, ft_render::ft_font::angle, ft_render::ft_font::size, ft_render::ft_font::face): Make members private. (ft_render::ft_font::ft_font(ft_font), ft_render::ft_font::operator=): Move implementation to source file. (ft_render::ft_font::ft_font(string,string,string,double,FT_Face)): Add default value for last argument. (ft_render::ft_font::get_name, ft_render::ft_font::get_weight, ft_render::ft_font::get_angle, ft_render::ft_font::get_size, ft_render::ft_font::get_face): New methods. * libinterp/corefcn/txt-eng-ft.cc (ft_render::ft_font::ft_font(ft_font), ft_render::ft_font::operator=): Moved implementation from header file. Use FT_Reference_Face conditionally. (ft_render::ft_font::get_face): New method to lazy-load the font structure, implementation from ft_render::set_font. (ft_render::process_character, ft_render::visit(text_element_subscript), ft_render::visit(text_element_superscript), ft_render::visit(text_element_fontsize), ft_render::visit(text_element_fontname), ft_render::visit(text_element_fontstyle), ft_render::update_line_bbox, ft_render::push_new_line): Use ft_render::ft_font accessors. (ft_render::set_font): Move implementation to ft_render::ft_font::get_face. (ft_manager::do_get_font): Use font sharing conditionally, when FT_Reference_Face is present.
author Michael Goffioul <michael.goffioul@gmail.com>
date Sun, 25 Aug 2013 09:26:37 -0400
parents fe6518a1d87c
children 4a348443de9b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 14003
diff changeset
3 Copyright (C) 2009-2012 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
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
33 #include <iostream>
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
34 #include <map>
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
35 #include <utility>
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
36
13992
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
37 #include "singleton-cleanup.h"
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
38
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
39 #include "error.h"
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
40 #include "pr-output.h"
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
41 #include "txt-eng-ft.h"
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
42
13317
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
43 // FIXME -- maybe issue at most one warning per glyph/font/size/weight
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
44 // combination.
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
45
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
46 static void
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
47 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
48 {
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
49 warning_with_id ("Octave:missing-glyph",
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
50 "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
51 c);
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
52 }
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
53
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
54 static void
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
55 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
56 {
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
57 warning_with_id ("Octave:glyph-render",
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
58 "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
59 c);
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
60 }
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
61
13730
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
62 #ifdef _MSC_VER
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
63 // This is just a trick to avoid multiply symbols definition.
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
64 // PermMatrix.h contains a dllexport'ed Array<octave_idx_type>
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
65 // that will make MSVC not to generate new instantiation and
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
66 // use the imported one.
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
67 #include "PermMatrix.h"
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
68 #endif
a2c74b5c02de [MSVC] Prevent duplicate symbol.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 13317
diff changeset
69
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
70 // Forward declaration
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
71 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
72
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
73 class
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
74 ft_manager
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
75 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
76 public:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
77 static bool instance_ok (void)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
78 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
79 bool retval = true;
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 if (! instance)
13992
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
82 {
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
83 instance = new ft_manager ();
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 if (instance)
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
86 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
87 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
88
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
89 if (! instance)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
90 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
91 ::error ("unable to create ft_manager!");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
92
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
93 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
94 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
95
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
96 return retval;
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
13992
e1f76bfe0452 apply singleton_cleanup to a few more classes
John W. Eaton <jwe@octave.org>
parents: 13730
diff changeset
99 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
100
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
101 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
102 const std::string& angle, double size)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
103 { return (instance_ok ()
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
104 ? instance->do_get_font (name, weight, angle, size)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
105 : 0); }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
106
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
107 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
108 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
109 if (instance_ok ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
110 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
111 }
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
112
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
113 private:
12122
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
114
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
115 static ft_manager *instance;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
116
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
117 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
118 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
119
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
120 // 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
121 // 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
122 // in class ft_render.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
123 ft_cache cache;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
124
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
125 private:
12122
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
126
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
127 // No copying!
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 ft_manager (const ft_manager&);
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& operator = (const ft_manager&);
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
132
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
133 ft_manager (void)
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
134 : library (), freetype_initialized (false), fontconfig_initialized (false)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
135 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
136 if (FT_Init_FreeType (&library))
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
137 ::error ("unable to initialize freetype library");
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
138 else
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
139 freetype_initialized = true;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
140
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
141 #if defined (HAVE_FONTCONFIG)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
142 if (! FcInit ())
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
143 ::error ("unable to initialize fontconfig library");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
144 else
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
145 fontconfig_initialized = true;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
146 #endif
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
147 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
148
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
149 ~ft_manager (void)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
150 {
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
151 if (freetype_initialized)
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
152 FT_Done_FreeType (library);
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
153
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
154 #if defined (HAVE_FONTCONFIG)
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
155 // FIXME -- Skip the call to FcFini because it can trigger the
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
156 // assertion
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
157 //
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14138
diff changeset
158 // 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
159 //
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
160 // if (fontconfig_initialized)
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
161 // FcFini ();
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
162 #endif
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
163 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
164
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
165
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
166 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
167 const std::string& angle, double size)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
168 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
169 FT_Face retval = 0;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
170
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
171 #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
172 // 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
173 // 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
174
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
175 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
176 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
177
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
178 if (it != cache.end ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
179 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
180 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
181 return it->second;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
182 }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
183 #endif
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
184
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
185 std::string file;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
186
14003
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
187 #if defined (HAVE_FONTCONFIG)
1555c5a177c9 better fix for fontconfig segfault
John W. Eaton <jwe@octave.org>
parents: 13999
diff changeset
188 if (fontconfig_initialized)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
189 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
190 int fc_weight, fc_angle;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
191
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
192 if (weight == "bold")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
193 fc_weight = FC_WEIGHT_BOLD;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
194 else if (weight == "light")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
195 fc_weight = FC_WEIGHT_LIGHT;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
196 else if (weight == "demi")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
197 fc_weight = FC_WEIGHT_DEMIBOLD;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
198 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
199 fc_weight = FC_WEIGHT_NORMAL;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
200
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
201 if (angle == "italic")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
202 fc_angle = FC_SLANT_ITALIC;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
203 else if (angle == "oblique")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
204 fc_angle = FC_SLANT_OBLIQUE;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
205 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
206 fc_angle = FC_SLANT_ROMAN;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
207
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
208 FcPattern *pat = FcPatternCreate ();
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
209
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
210 FcPatternAddString (pat, FC_FAMILY,
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
211 (reinterpret_cast<const FcChar8*>
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
212 (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
213
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
214 FcPatternAddInteger (pat, FC_WEIGHT, fc_weight);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
215 FcPatternAddInteger (pat, FC_SLANT, fc_angle);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
216 FcPatternAddDouble (pat, FC_PIXEL_SIZE, size);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
217
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
218 if (FcConfigSubstitute (0, pat, FcMatchPattern))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
219 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
220 FcResult res;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
221 FcPattern *match;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
222
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
223 FcDefaultSubstitute (pat);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
224 match = FcFontMatch (0, pat, &res);
9833
637fa784d102 Allow more font matches
godfrey@isl.Stanford.EDU
parents: 9619
diff changeset
225
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
226 // FIXME -- originally, this test also required that
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
227 // res != FcResultNoMatch. Is that really needed?
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
228 if (match)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
229 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
230 unsigned char *tmp;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
231
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
232 FcPatternGetString (match, FC_FILE, 0, &tmp);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
233 file = reinterpret_cast<char*> (tmp);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
234 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
235 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
236 ::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
237 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
238 size);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
239
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
240 if (match)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
241 FcPatternDestroy (match);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
242 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
243
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
244 FcPatternDestroy (pat);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
245 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
246 #endif
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
247
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
248 if (file.empty ())
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
249 {
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
250 #ifdef __WIN32__
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
251 file = "C:/WINDOWS/Fonts/verdana.ttf";
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
252 #else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
253 // FIXME: find a "standard" font for UNIX platforms
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
254 #endif
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
255 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
256
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
257 if (! file.empty ())
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
258 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
259 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
260 ::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
261 #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
262 else
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
263 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
264 // 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
265 // 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
266 // references to font objects.
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
267
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
268 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
269 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
270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
271 // 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
272
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
273 cache[key] = retval;
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
274 }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
275 #endif
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
276 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
277
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
278 return retval;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
279 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
280
17270
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
281 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
282 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
283 if (face->generic.data)
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
284 {
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
285 ft_key* pkey =
ba865ea9c7e9 Add simple FreeType font cache in class ft_manager.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
286 reinterpret_cast<ft_key*> (face->generic.data);
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 std::string str = e.string_value ();
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
632 FT_UInt glyph_index, previous = 0;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
633
10553
f88e3d5d88e2 avoid GCC warnings
John W. Eaton <jwe@octave.org>
parents: 10402
diff changeset
634 for (size_t i = 0; i < str.length (); i++)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
635 {
17324
c8809de193a3 Handle 8-bits characters correctly in freetype renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
636 glyph_index = process_character (static_cast<unsigned char> (str[i]),
c8809de193a3 Handle 8-bits characters correctly in freetype renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
637 previous);
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
638
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
639 if (str[i] == '\n')
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
640 previous = 0;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
641 else
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
642 previous = glyph_index;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
643 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
644 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
645 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
646
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
647 void
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
648 ft_render::visit (text_element_list& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
649 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
650 // 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
651
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
652 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
653 uint8NDArray saved_color (color);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
654
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
655 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
656
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
657 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
658 color = saved_color;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
659 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
660
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
661 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
662 ft_render::visit (text_element_subscript& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
663 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
664 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
665 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
666 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
667
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
668 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
669 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
670
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
671 if (font.is_valid ())
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
672 {
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
673 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
674
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
675 // 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
676 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
677 yoffset -= (h * 2) / 3;
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 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
680 update_line_bbox ();
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 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
684
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
685 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
686 // 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
687 // 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
688 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
689 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
690 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
691
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
692 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
693 ft_render::visit (text_element_superscript& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
694 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
695 ft_font saved_font (font);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
696 int saved_line_yoffset = line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
697 int saved_yoffset = yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
698
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
699 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
700 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
701
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
702 if (saved_font.is_valid ())
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
703 {
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
704 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
705
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
706 // 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
707 // decent result.
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
708 yoffset += (s_asc * 2) / 3;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
709
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
710 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
711 update_line_bbox ();
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 text_processor::visit (e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
715
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
716 font = saved_font;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
717 // 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
718 // 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
719 if (line_yoffset == saved_line_yoffset)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
720 yoffset = saved_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
721 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
722
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
723 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
724 ft_render::visit (text_element_color& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
725 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
726 if (mode == MODE_RENDER)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
727 set_color (e.get_color ());
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
728 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
729
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
730 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
731 ft_render::visit (text_element_fontsize& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
732 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
733 double sz = e.get_fontsize ();
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 // 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
736 // in the text object FontUnit.
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
737
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
738 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
739
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
740 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
741 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
742 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
743
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
744 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
745 ft_render::visit (text_element_fontname& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
746 {
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
747 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
748 font.get_size ());
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
749
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
750 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
751 update_line_bbox ();
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
752 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
753
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
754 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
755 ft_render::visit (text_element_fontstyle& e)
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 switch (e.get_fontstyle ())
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
758 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
759 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
760 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
761 break;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
762 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
763 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
764 break;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
765 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
766 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
767 break;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
768 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
769 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
770 break;
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
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
773 if (mode == MODE_BBOX)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
774 update_line_bbox ();
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
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
777 void
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
778 ft_render::visit (text_element_symbol& e)
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
779 {
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
780 uint32_t code = e.get_symbol_code ();
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
781
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
782 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
783 process_character (code);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
784 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
785 ::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
786 }
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
787
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
788 void
17274
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
789 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
790 {
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
791 int saved_xoffset = xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
792 int max_xoffset = xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
793
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
794 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
795 {
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
796 xoffset = saved_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
797 (*it)->accept (*this);
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
798 max_xoffset = xmax (xoffset, max_xoffset);
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
799 }
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
800
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
801 xoffset = max_xoffset;
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
802 }
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
803
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
804 void
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
805 ft_render::reset (void)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
806 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
807 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
808 set_color (Matrix (1, 3, 0.0));
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
809 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
810
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
811 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
812 ft_render::set_color (Matrix c)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
813 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
814 if (c.numel () == 3)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
815 {
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
816 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
817 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
818 color(2) = static_cast<uint8_t> (c(2)*255);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
819 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
820 else
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
821 ::warning ("ft_render::set_color: invalid color");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
822 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
823
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
824 uint8NDArray
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
825 ft_render::render (text_element* elt, Matrix& box, int rotation)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
826 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
827 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
828 elt->accept (*this);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
829 compute_bbox ();
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
830 box = bbox;
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 set_mode (MODE_RENDER);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
833 if (pixels.numel () > 0)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
834 {
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
835 elt->accept (*this);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
836
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
837 switch (rotation)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
838 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
839 case ROTATION_0:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
840 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
841 case ROTATION_90:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
842 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
843 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
844 perm(0) = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
845 perm(1) = 2;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
846 perm(2) = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
847 pixels = pixels.permute (perm);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
848
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
849 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
850 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
851 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
852 idx(2) = idx_vector (':');
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
853 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
854 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
855 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
856 case ROTATION_180:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
857 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
858 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
859 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
860 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
861 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
862 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
863 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
864 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
865 case ROTATION_270:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
866 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
867 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
868 perm(0) = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
869 perm(1) = 2;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
870 perm(2) = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
871 pixels = pixels.permute (perm);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
872
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
873 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
874 idx(0) = idx_vector (':');
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
875 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
876 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
877 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
878 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
879 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
880 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
881 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
882
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
883 return pixels;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
884 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
885
16201
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
886 // Note:
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
887 // 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
888 // 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
889 // 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
890
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
891 Matrix
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
892 ft_render::get_extent (text_element *elt, double rotation)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
893 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
894 set_mode (MODE_BBOX);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
895 elt->accept (*this);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
896 compute_bbox ();
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
897
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
898 Matrix extent (1, 2, 0.0);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
899
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
900 switch (rotation_to_mode (rotation))
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
901 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
902 case ROTATION_0:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
903 case ROTATION_180:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
904 extent(0) = bbox(2);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
905 extent(1) = bbox(3);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
906 break;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
907 case ROTATION_90:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
908 case ROTATION_270:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
909 extent(0) = bbox(3);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
910 extent(1) = bbox(2);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
911 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
912
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
913 return extent;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
914 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
915
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
916 Matrix
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
917 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
918 const caseless_str& interpreter)
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
919 {
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
920 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
921 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
922 delete elt;
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
923
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
924 return extent;
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
925 }
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
926
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
927 int
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
928 ft_render::rotation_to_mode (double rotation) const
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
929 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
930 if (rotation == 0.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
931 return ROTATION_0;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
932 else if (rotation == 90.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
933 return ROTATION_90;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
934 else if (rotation == 180.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
935 return ROTATION_180;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
936 else if (rotation == 270.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
937 return ROTATION_270;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
938 else
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
939 return ROTATION_0;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
940 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
941
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
942 void
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
943 ft_render::text_to_pixels (const std::string& txt,
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
944 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
945 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
946 const caseless_str& interpreter)
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
947 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
948 // FIXME: clip "rotation" between 0 and 360
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
949 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
950
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
951 halign = _halign;
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
952
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
953 text_element *elt = text_parser::parse (txt, interpreter);
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
954 pixels_ = render (elt, box, rot_mode);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
955 delete elt;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
956
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
957 if (pixels_.numel () == 0)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
958 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
959 // nothing to render
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
960 return;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
961 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
962
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
963 switch (halign)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
964 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
965 default: box(0) = 0; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
966 case 1: box(0) = -box(2)/2; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
967 case 2: box(0) = -box(2); break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
968 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
969 switch (valign)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
970 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
971 default: box(1) = 0; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
972 case 1: box(1) = -box(3)/2; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
973 case 2: box(1) = -box(3); break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
974 case 3: break;
16206
9ba5c5ed3aeb Add new verticalalignment option 'cap' for OpenGL plotting.
Rik <rik@octave.org>
parents: 16201
diff changeset
975 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
976 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
977
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
978 switch (rot_mode)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
979 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
980 case ROTATION_90:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
981 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
982 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
983 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
984 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
985 case ROTATION_180:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
986 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
987 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
988 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
989 case ROTATION_270:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
990 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
991 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
992 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
993 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
994 }
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
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
997 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
998 : 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
999 face (0)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1000 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1001 #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
1002 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
1003
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1004 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
1005 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1006 #endif
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1007 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1008
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1009 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
1010 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
1011 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1012 if (&ft != this)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1013 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1014 name = ft.name;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1015 weight = ft.weight;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1016 angle = ft.angle;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1017 size = ft.size;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1018 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1019 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1020 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
1021 face = 0;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1022 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1023
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1024 #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
1025 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
1026
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1027 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
1028 face = ft_face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1029 #endif
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
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1032 return *this;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1033 }
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 FT_Face
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::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
1037 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1038 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
1039 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1040 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
1041
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1042 if (face)
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1043 {
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1044 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
1045 ::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
1046 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1047 else
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1048 ::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
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 return face;
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1052 }
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17327
diff changeset
1053
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
1054 #endif // HAVE_FREETYPE