Mercurial > octave-nkf

annotate libinterp/corefcn/txt-eng-ft.h @ 20654:b65888ec820e draft default tip gccjit

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents 4197fc428c7d
children
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
19731
4197fc428c7d maint: Update copyright notices for 2015.
John W. Eaton <jwe@octave.org>
parents: 18770
diff changeset
3 Copyright (C) 2009-2015 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 #if ! defined (txt_eng_ft_h)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
24 #define txt_eng_ft_h 1
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
25
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
26 #if HAVE_FREETYPE
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
27
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
28 #include <list>
12969
6fc2c61660f2 Native multi-line text alignment.
Vanya Sergeev <vsergeev@gmail.com>
parents: 12334
diff changeset
29 #include <vector>
6fc2c61660f2 Native multi-line text alignment.
Vanya Sergeev <vsergeev@gmail.com>
parents: 12334
diff changeset
30
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
31 #include <ft2build.h>
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
32 #include FT_FREETYPE_H
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
33
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
34 #include <dMatrix.h>
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
35 #include <uint8NDArray.h>
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
36 #include "txt-eng.h"
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
37
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
38 class
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
39 OCTINTERP_API
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
40 ft_render : public text_processor
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
41 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
42 public:
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
43 enum
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
44 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
45 MODE_BBOX = 0,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
46 MODE_RENDER = 1
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
47 };
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
48
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
49 enum
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
50 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
51 ROTATION_0 = 0,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
52 ROTATION_90 = 1,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
53 ROTATION_180 = 2,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
54 ROTATION_270 = 3
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
55 };
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
56
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
57 public:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
58 ft_render (void);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
59
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
60 ~ft_render (void);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
61
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
62 void visit (text_element_string& e);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
63
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
64 void visit (text_element_list& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
65
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
66 void visit (text_element_subscript& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
67
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
68 void visit (text_element_superscript& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
69
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
70 void visit (text_element_color& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
71
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
72 void visit (text_element_fontsize& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
73
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
74 void visit (text_element_fontname& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
75
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
76 void visit (text_element_fontstyle& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
77
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
78 void visit (text_element_symbol& e);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
79
17274
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
80 void visit (text_element_combined& e);
0a09d4b40767 Combine successive TeX super- and subscript elements.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17272
diff changeset
81
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
82 void reset (void);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
83
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
84 uint8NDArray get_pixels (void) const { return pixels; }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
85
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
86 Matrix get_boundingbox (void) const { return bbox; }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
87
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
88 uint8NDArray render (text_element* elt, Matrix& box,
10313
f3b65e1ae355 untabify src header files
John W. Eaton <jwe@octave.org>
parents: 9403
diff changeset
89 int rotation = ROTATION_0);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
90
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10313
diff changeset
91 Matrix get_extent (text_element *elt, double rotation = 0.0);
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
92 Matrix get_extent (const std::string& txt, double rotation = 0.0,
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
93 const caseless_str& interpreter = "tex");
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10313
diff changeset
94
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10402
diff changeset
95 void set_font (const std::string& name, const std::string& weight,
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10402
diff changeset
96 const std::string& angle, double size);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
97
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
98 void set_color (Matrix c);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
99
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
100 void set_mode (int m);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
101
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10402
diff changeset
102 void text_to_pixels (const std::string& txt,
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10402
diff changeset
103 uint8NDArray& pixels_, Matrix& bbox,
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
104 int halign, int valign, double rotation,
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
105 const caseless_str& interpreter = "tex");
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10402
diff changeset
106
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
107 private:
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10313
diff changeset
108 int rotation_to_mode (double rotation) const;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10313
diff changeset
109
12122
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
110 // No copying!
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
111
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
112 ft_render (const ft_render&);
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
113
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
114 ft_render& operator = (const ft_render&);
f4689107dd8c Explicitly disallow copying in some classes.
Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
parents: 11586
diff changeset
115
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
116 // Class to hold information about fonts and a strong
18770
333901476119 maint: Use "FreeType" rather than "freetype" in messages and comments.
Rik <rik@octave.org>
parents: 17787
diff changeset
117 // reference to the font objects loaded by FreeType.
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
118 class ft_font
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
119 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
120 public:
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
121 ft_font (void)
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
122 : name (), weight (), angle (), size (0), face (0) { }
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
123
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
124 ft_font (const std::string& nm, const std::string& wt,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
125 const std::string& ang, double sz, FT_Face f = 0)
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
126 : name (nm), weight (wt), angle (ang), size (sz), face (f) { }
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
127
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
128 ft_font (const ft_font& ft);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
129
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
130 ~ft_font (void)
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
131 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
132 if (face)
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
133 FT_Done_Face (face);
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
134 }
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
135
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
136 ft_font& operator = (const ft_font& ft);
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
137
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
138 bool is_valid (void) const { return get_face (); }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
139
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
140 std::string get_name (void) const { return name; }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
141
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
142 std::string get_weight (void) const { return weight; }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
143
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
144 std::string get_angle (void) const { return angle; }
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
145
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
146 double get_size (void) const { return size; }
17330
219552139c18 Allow to compile with older freetype on RHEL5 (bug #39823).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17274
diff changeset
147
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
148 FT_Face get_face (void) const;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
149
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
150 private:
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
151 std::string name;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
152 std::string weight;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
153 std::string angle;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
154 double size;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
155 mutable FT_Face face;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
156 };
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
157
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
158 void push_new_line (void);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
159
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
160 void update_line_bbox (void);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
161
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
162 void compute_bbox (void);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
163
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
164 int compute_line_xoffset (const Matrix& lb) const;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
165
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
166 FT_UInt process_character (FT_ULong code, FT_UInt previous = 0);
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
167
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10313
diff changeset
168 private:
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
169 // The current font used by the renderer.
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
170 ft_font font;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
171
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
172 // Used to stored the bounding box corresponding to the rendered text.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
173 // The bounding box has the form [x, y, w, h] where x and y represent the
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
174 // coordinates of the bottom left corner relative to the anchor point of
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
175 // the text (== start of text on the baseline). Due to font descent or
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
176 // multiple lines, the value y is usually negative.
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
177 Matrix bbox;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
178
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
179 // Used to stored the rendered text. It's a 3D matrix with size MxNx4
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
180 // where M and N are the width and height of the bounding box.
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
181 uint8NDArray pixels;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
182
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
183 // Used to store the bounding box of each line. This is used to layout
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
184 // multiline text properly.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
185 std::list<Matrix> line_bbox;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
186
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
187 // The current horizontal alignment. This is used to align multi-line text.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
188 int halign;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
189
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
190 // The X offset for the next glyph.
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
191 int xoffset;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
192
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
193 // The Y offset of the baseline for the current line.
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
194 int line_yoffset;
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
195
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
196 // The Y offset of the baseline for the next glyph. The offset is relative
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
197 // to line_yoffset. The total Y offset is computed with:
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
198 // line_yoffset + yoffset.
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
199 int yoffset;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
200
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
201 // The current mode of the rendering process (box computing or rendering).
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
202 int mode;
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
203
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17269
diff changeset
204 // The base color of the rendered text.
17272
8ce6cdd272eb Support TeX elements in FreeType renderer.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17271
diff changeset
205 uint8NDArray color;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
206 };
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
207
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
208 #endif // HAVE_FREETYPE
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
209
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
210 #endif