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annotate libgui/graphics/GLCanvas.cc @ 28851:1ac5a76ae91d

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use [=] capture default specification where possible Files affected: Canvas.cc, GLCanvas.cc, file-editor-tab.cc, file-editor.cc, octave-qscintilla.cc, main-window.cc, octave-qobject.cc, set-path-model.cc, variable-editor-model.cc, workspace-view.cc, call-stack.cc, graphics.cc, input.cc, interpreter.cc, load-path.cc, pr-output.cc, strfns.cc, sysdep.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, oct-parse.yy, pt-eval.cc, lo-sysdep.cc, oct-glob.cc, oct-string.cc, and url-transfer.cc.
author John W. Eaton <jwe@octave.org>
date Fri, 02 Oct 2020 13:25:00 -0400
parents bd51beb6205e
children 8f67ad8b3103
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27923
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2020 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include "GLCanvas.h"
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31 #include "gl-select.h"
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32
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33 #include "gl-render.h"
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34 #include "gl2ps-print.h"
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35 #include "graphics.h"
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36 #include "interpreter.h"
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37
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38 namespace QtHandles
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39 {
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40 #if defined (HAVE_QOPENGLWIDGET)
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41 # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS
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42 #else
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43 # if defined (Q_OS_WIN32)
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44 # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS \
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45 QGLFormat (QGL::SampleBuffers | QGL::AlphaChannel \
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46 | QGL::IndirectRendering),
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47 # else
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48 # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS \
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49 QGLFormat (QGL::SampleBuffers | QGL::AlphaChannel),
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50 # endif
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51 #endif
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52
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53 GLCanvas::GLCanvas (octave::base_qobject& oct_qobj,
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54 octave::interpreter& interp,
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55 const graphics_handle& gh, QWidget *xparent)
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56 : OCTAVE_QT_OPENGL_WIDGET (OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS xparent),
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57 Canvas (oct_qobj, interp, gh), m_glfcns (), m_renderer (m_glfcns)
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58 {
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59 setFocusPolicy (Qt::ClickFocus);
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60 setFocus ();
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61 }
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62
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63 GLCanvas::~GLCanvas (void)
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64 { }
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65
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66 void
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67 GLCanvas::initializeGL (void)
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68 {
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69 m_glfcns.init ();
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70 }
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71
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72 void
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73 GLCanvas::draw (const graphics_handle& gh)
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74 {
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75 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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76
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77 octave::autolock guard (gh_mgr.graphics_lock ());
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78
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79 graphics_object go = gh_mgr.get_object (gh);
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80
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81 if (go)
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82 {
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83 graphics_object fig = go.get_ancestor ("figure");
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84 double dpr = fig.get ("__device_pixel_ratio__").double_value ();
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85 m_renderer.set_viewport (dpr * width (), dpr * height ());
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86 m_renderer.set_device_pixel_ratio (dpr);
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87 m_renderer.draw (go);
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88 }
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89 }
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90
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91 uint8NDArray
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92 GLCanvas::do_getPixels (const graphics_handle& gh)
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93 {
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94 uint8NDArray retval;
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95
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96 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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97
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98 graphics_object go = gh_mgr.get_object (gh);
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99
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100 if (go && go.isa ("figure"))
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101 {
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102 Matrix pos = go.get ("position").matrix_value ();
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103 double dpr = go.get ("__device_pixel_ratio__").double_value ();
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104 pos(2) *= dpr;
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105 pos(3) *= dpr;
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106
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107 // Make sure we have a valid current context
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108 if (! begin_rendering ())
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109 return retval;
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110
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111 // When the figure is not visible or its size is frozen for printing,
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112 // we use a framebuffer object to make sure we are rendering on a
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113 // suitably large frame.
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114 if (go.get ("visible").string_value () == "off"
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115 || go.get ("__printing__").string_value () == "on")
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116 {
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117 OCTAVE_QT_OPENGL_FBO
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118 fbo (pos(2), pos(3),
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119 OCTAVE_QT_OPENGL_FBO::Attachment::Depth);
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120
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121 fbo.bind ();
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122
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123 m_renderer.set_viewport (pos(2), pos(3));
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124 m_renderer.set_device_pixel_ratio (dpr);
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125 m_renderer.draw (go);
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126 retval = m_renderer.get_pixels (pos(2), pos(3));
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127
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128 fbo.release ();
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129 }
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130 else
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diff changeset
131 {
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132 m_renderer.set_viewport (pos(2), pos(3));
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133 m_renderer.set_device_pixel_ratio (dpr);
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134 m_renderer.draw (go);
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135 retval = m_renderer.get_pixels (pos(2), pos(3));
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136 }
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137
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diff changeset
138 end_rendering ();
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139 }
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140
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141 return retval;
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142 }
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143
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144 void
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145 GLCanvas::do_print (const QString& file_cmd, const QString& term,
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146 const graphics_handle& handle)
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147 {
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148 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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149
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150 octave::autolock guard (gh_mgr.graphics_lock ());
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151
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152 graphics_object go = gh_mgr.get_object (handle);
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153
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154 if (go.valid_object ())
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155 {
27168
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156 graphics_object fig (go.get_ancestor ("figure"));
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157
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158 // Make sure we have a valid current context
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159 if (! begin_rendering ())
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160 error ("print: no valid OpenGL offscreen context");
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161
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162 try
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163 {
27168
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164 if (fig.get ("visible").string_value () == "on")
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165 octave::gl2ps_print (m_glfcns, fig, file_cmd.toStdString (),
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166 term.toStdString ());
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167 else
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168 {
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169 // When the figure is not visible, we use a framebuffer object
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170 // to make sure we are rendering on a suitably large frame.
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diff changeset
171 Matrix pos = fig.get ("position").matrix_value ();
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172 double dpr = fig.get ("__device_pixel_ratio__").double_value ();
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173 pos(2) *= dpr;
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174 pos(3) *= dpr;
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175
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diff changeset
176 OCTAVE_QT_OPENGL_FBO
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177 fbo (pos(2), pos(3),
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178 OCTAVE_QT_OPENGL_FBO::Attachment::Depth);
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179
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diff changeset
180 fbo.bind ();
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181
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182 octave::gl2ps_print (m_glfcns, fig, file_cmd.toStdString (),
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diff changeset
183 term.toStdString ());
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diff changeset
184
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185 fbo.release ();
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186 }
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187 }
27481
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diff changeset
188 catch (octave::execution_exception& ee)
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189 {
27303
07b330708e3c use Qt signals for interpreter callbacks in Qt graphics toolkit
John W. Eaton <jwe@octave.org>
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diff changeset
190 emit interpreter_event
28851
1ac5a76ae91d use [=] capture default specification where possible
John W. Eaton <jwe@octave.org>
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diff changeset
191 ([=] (void)
27302
5f170ea12fa1 use Qt signals to pass interpreter callbacks to octave-qobject
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diff changeset
192 {
27393
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diff changeset
193 // INTERPRETER THREAD
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diff changeset
194
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195 throw ee;
27302
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diff changeset
196 });
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diff changeset
197 }
26617
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diff changeset
198
26277
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diff changeset
199 end_rendering ();
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diff changeset
200 }
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diff changeset
201 }
23535
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diff changeset
202
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203 graphics_object
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204 GLCanvas::selectFromAxes (const graphics_object& ax, const QPoint& pt)
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205 {
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diff changeset
206 makeCurrent ();
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207
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diff changeset
208 if (ax)
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diff changeset
209 {
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diff changeset
210 octave::opengl_selector s (m_glfcns);
18498
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diff changeset
211
25889
2da65009cc7f Fix graphics object selection on high resolution screens (bug #49053)
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parents: 25884
diff changeset
212 s.set_viewport (width (), height ());
24691
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diff changeset
213 return s.select (ax, pt.x (), height () - pt.y (),
24636
9d01ce02d5cb Make selection and "HitTest" compatible with Matlab (bug #52795).
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diff changeset
214 octave::select_ignore_hittest);
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diff changeset
215 }
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parents:
diff changeset
216
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diff changeset
217 return graphics_object ();
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diff changeset
218 }
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diff changeset
219
25862
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diff changeset
220 void
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diff changeset
221 GLCanvas::drawZoomBox (const QPoint& p1, const QPoint& p2)
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diff changeset
222 {
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diff changeset
223 Matrix overlaycolor (3, 1);
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diff changeset
224 overlaycolor(0) = 0.45;
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diff changeset
225 overlaycolor(1) = 0.62;
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diff changeset
226 overlaycolor(2) = 0.81;
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diff changeset
227 double overlayalpha = 0.1;
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diff changeset
228 Matrix bordercolor = overlaycolor;
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diff changeset
229 double borderalpha = 0.9;
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diff changeset
230 double borderwidth = 1.5;
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diff changeset
231
25863
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diff changeset
232 m_renderer.draw_zoom_box (width (), height (),
8a6bf76abf31 eliminate some duplicate OpenGL drawing code
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diff changeset
233 p1.x (), p1.y (), p2.x (), p2.y (),
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diff changeset
234 overlaycolor, overlayalpha,
8a6bf76abf31 eliminate some duplicate OpenGL drawing code
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diff changeset
235 bordercolor, borderalpha, borderwidth);
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diff changeset
236 }
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diff changeset
237
22411
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diff changeset
238 void
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diff changeset
239 GLCanvas::paintGL (void)
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diff changeset
240 {
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diff changeset
241 canvasPaintEvent ();
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diff changeset
242 }
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diff changeset
243
22411
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diff changeset
244 void
23449
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245 GLCanvas::mouseDoubleClickEvent (QMouseEvent *xevent)
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246 {
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diff changeset
247 canvasMouseDoubleClickEvent (xevent);
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diff changeset
248 }
19663
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diff changeset
249
22411
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diff changeset
250 void
23449
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diff changeset
251 GLCanvas::mouseMoveEvent (QMouseEvent *xevent)
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diff changeset
252 {
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diff changeset
253 canvasMouseMoveEvent (xevent);
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diff changeset
254 }
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diff changeset
255
22411
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diff changeset
256 void
23449
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diff changeset
257 GLCanvas::mousePressEvent (QMouseEvent *xevent)
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258 {
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259 canvasMousePressEvent (xevent);
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260 }
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261
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262 void
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263 GLCanvas::mouseReleaseEvent (QMouseEvent *xevent)
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264 {
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265 canvasMouseReleaseEvent (xevent);
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266 }
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267
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268 void
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269 GLCanvas::wheelEvent (QWheelEvent *xevent)
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270 {
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271 canvasWheelEvent (xevent);
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272 }
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273
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274 void
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275 GLCanvas::keyPressEvent (QKeyEvent *xevent)
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276 {
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277 if (! canvasKeyPressEvent (xevent))
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278 OCTAVE_QT_OPENGL_WIDGET::keyPressEvent (xevent);
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279 }
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280
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281 void
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282 GLCanvas::keyReleaseEvent (QKeyEvent *xevent)
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283 {
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284 if (! canvasKeyReleaseEvent (xevent))
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285 OCTAVE_QT_OPENGL_WIDGET::keyReleaseEvent (xevent);
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286 }
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287
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288 bool
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289 GLCanvas::begin_rendering (void)
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290 {
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291 bool retval = true;
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292
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293 if (! isValid ())
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294 {
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295 # if defined (HAVE_QT_OFFSCREEN)
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296 static bool os_ctx_ok = true;
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297 if (os_ctx_ok && ! m_os_context.isValid ())
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298 {
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299 // Try to initialize offscreen context
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300 m_os_surface.create ();
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301 if (! m_os_context.create ())
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302 {
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303 os_ctx_ok = false;
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304 return false;
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305 }
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306 }
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307
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308 retval = m_os_context.makeCurrent (&m_os_surface);
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309 # else
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310 retval = false;
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311 # endif
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312 }
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313 else
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314 makeCurrent ();
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315
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316 return retval;
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317 }
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318
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319 void
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320 GLCanvas::end_rendering (void)
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321 {
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322 doneCurrent ();
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323 }
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324 }