Mercurial > octave
annotate libinterp/corefcn/text-renderer.cc @ 26858:0adb232f93b9
Implement axes and text "fontsmoothing" property (bug #55833).
* NEWS: Announce new property.
* base-text-renderer.h (base_text_renderer::set_anti_aliasing): New pure virtual
method
* ft-text-renderer.[h,cc] (text_renderer::m_antialias): New bool data member.
(ft_text_renderer::set_anti_aliasing): Implement
base_text_renderer::set_anti_aliasing.
(is_opaque): New function to determine if a pixel is opaque.
(ft_text_renderer::process_charater): Render glyph monochrome or antialiased
depending on m_antialias.
* text-renderer.[h,cc] (text_renderer::set_anti_aliasing): New method.
* graphics.in.h (axes::properties::fontsmoothing): Add "u" and corresponding
updater.
(text::properties::fontsmoothing,text::properties::update_fontsmoothing): New
property and corresponding updater.
* grpahics.cc (text::properties::update_font): Update the text_renderer
anti-aliasing.
* grpahics.cc (opengl_renderer::set_font): Update the text-renderer
anti-aliasing.
* genpropdoc: Document "fontsmoothnig" property.
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Tue, 05 Mar 2019 13:51:16 +0100 |
parents | 00f796120a6d |
children | 097774bed4ed |
rev | line source |
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21209 | 1 /* |
2 | |
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3 Copyright (C) 2016-2019 John W. Eaton |
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4 Copyright (C) 2009-2019 Michael Goffioul |
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6 This file is part of Octave. | |
7 | |
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8 Octave is free software: you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
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13 Octave is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
21209 | 17 |
18 You should have received a copy of the GNU General Public License | |
19 along with Octave; see the file COPYING. If not, see | |
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20 <https://www.gnu.org/licenses/>. |
21209 | 21 |
22 */ | |
23 | |
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
21209 | 26 #endif |
27 | |
28 #include "base-text-renderer.h" | |
29 #include "errwarn.h" | |
30 #include "ft-text-renderer.h" | |
31 #include "text-renderer.h" | |
32 | |
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33 static octave::base_text_renderer * |
21209 | 34 make_text_renderer (void) |
35 { | |
36 // Allow the possibility of choosing different text rendering | |
37 // implementations. | |
38 | |
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39 return octave::make_ft_text_renderer (); |
21209 | 40 } |
41 | |
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42 namespace octave |
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43 { |
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44 text_renderer::text_renderer (void) |
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45 : rep (make_text_renderer ()) |
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46 { } |
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48 text_renderer::~text_renderer (void) |
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49 { |
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50 delete rep; |
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51 } |
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53 bool |
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54 text_renderer::ok (void) const |
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55 { |
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56 static bool warned = false; |
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58 if (! rep) |
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59 { |
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60 if (! warned) |
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61 { |
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62 warn_disabled_feature ("opengl_renderer::render_text", |
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63 "rendering text (FreeType)"); |
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65 warned = true; |
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66 } |
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67 } |
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69 return rep != nullptr; |
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70 } |
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72 Matrix |
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73 text_renderer::get_extent (text_element *elt, double rotation) |
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74 { |
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75 static Matrix empty_extent (1, 4, 0.0); |
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77 return ok () ? rep->get_extent (elt, rotation) : empty_extent; |
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78 } |
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80 Matrix |
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81 text_renderer::get_extent (const std::string& txt, double rotation, |
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82 const caseless_str& interpreter) |
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83 { |
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84 static Matrix empty_extent (1, 4, 0.0); |
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86 return ok () ? rep->get_extent (txt, rotation, interpreter) : empty_extent; |
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87 } |
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89 void |
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90 text_renderer::set_anti_aliasing (bool val) |
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91 { |
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92 if (ok ()) |
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93 rep->set_anti_aliasing (val); |
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94 } |
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95 |
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96 void |
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97 text_renderer::set_font (const std::string& name, const std::string& weight, |
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98 const std::string& angle, double size) |
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99 { |
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100 if (ok ()) |
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101 rep->set_font (name, weight, angle, size); |
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102 } |
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104 void |
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105 text_renderer::set_color (const Matrix& c) |
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106 { |
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107 if (ok ()) |
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108 rep->set_color (c); |
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109 } |
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111 void |
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112 text_renderer::text_to_pixels (const std::string& txt, |
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113 uint8NDArray& pxls, Matrix& bbox, |
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114 int halign, int valign, double rotation, |
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115 const caseless_str& interpreter, |
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116 bool handle_rotation) |
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117 { |
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118 static Matrix empty_bbox (1, 4, 0.0); |
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119 static uint8NDArray empty_pxls; |
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121 if (ok ()) |
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122 rep->text_to_pixels (txt, pxls, bbox, halign, valign, rotation, |
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123 interpreter, handle_rotation); |
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124 else |
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125 { |
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126 bbox = empty_bbox; |
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127 pxls = empty_pxls; |
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128 } |
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129 } |
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131 void |
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132 text_renderer::text_to_strlist (const std::string& txt, |
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133 std::list<text_renderer::string>& lst, |
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134 Matrix& bbox, int halign, int valign, |
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135 double rotation, |
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136 const caseless_str& interpreter) |
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137 { |
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138 static Matrix empty_bbox (1, 4, 0.0); |
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139 static std::list<text_renderer::string> empty_lst; |
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141 if (ok ()) |
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142 rep->text_to_strlist (txt, lst, bbox, halign, valign, rotation, |
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143 interpreter); |
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144 else |
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145 { |
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146 bbox = empty_bbox; |
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147 lst = empty_lst; |
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maint: Indent namespaces in more files.
John W. Eaton <jwe@octave.org>
parents:
22326
diff
changeset
|
148 } |
b81b08cc4c83
maint: Indent namespaces in more files.
John W. Eaton <jwe@octave.org>
parents:
22326
diff
changeset
|
149 } |
21209 | 150 } |