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annotate libgui/graphics/GLCanvas.cc @ 19989:b6061813a693

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always obtain gh_manager lock before accessing graphics objects * Canvas.cc (Canvas::print, Canvas::updateCurrentPoint): Use gh_manager::auto_lock before accessing object. * Container.cc (Container::canvas): Likewise. * ContextMenu.cc (ContextMenu::executeAt): Likewise. * Figure.cc (hasUiControlChildren, hasUiMenuChildren): Likewise. * GLCanvas.cc (GLCanvas::draw): Likewise. * Object.cc (Object::objectDestroyed): Likewise. * __init_qt__.cc (__init__, __shutdown__): Likewise.
author John W. Eaton <jwe@octave.org>
date Tue, 17 Mar 2015 20:16:16 -0400
parents 815db217f6f4
children 3cc0734283dc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2011-2014 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #ifdef HAVE_CONFIG_H
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28 #include <config.h>
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29 #endif
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30
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31 #include "gl-render.h"
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32 #include "graphics.h"
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33
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34 #include "GLCanvas.h"
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35 #include "gl-select.h"
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36
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37 namespace QtHandles
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38 {
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39
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40 GLCanvas::GLCanvas (QWidget* xparent, const graphics_handle& gh)
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41 : QGLWidget (QGLFormat(QGL::SampleBuffers), xparent), Canvas (gh)
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42 {
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43 setFocusPolicy (Qt::ClickFocus);
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44 }
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45
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46 GLCanvas::~GLCanvas (void)
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47 {
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48 }
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49
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50 void GLCanvas::draw (const graphics_handle& gh)
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51 {
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52 gh_manager::auto_lock lock;
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53 graphics_object go = gh_manager::get_object (gh);
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54
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55 if (go)
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56 {
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57 opengl_renderer r;
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58
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59 r.set_viewport (width (), height ());
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60 r.draw(go);
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61 }
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62 }
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63
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64 void GLCanvas::toggleAxes (const graphics_handle& gh)
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65 {
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66 canvasToggleAxes (gh);
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67 }
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68
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69 void GLCanvas::toggleGrid (const graphics_handle& gh)
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70 {
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71 canvasToggleGrid (gh);
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72 }
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73
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74 void GLCanvas::autoAxes (const graphics_handle& gh)
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75 {
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76 canvasAutoAxes (gh);
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77 }
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78
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79 graphics_object GLCanvas::selectFromAxes (const graphics_object& ax,
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80 const QPoint& pt)
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81 {
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82 makeCurrent ();
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83
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84 if (ax)
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85 {
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86 opengl_selector s;
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87
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88 s.set_viewport (width (), height ());
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89 return s.select (ax, pt.x (), height () - pt.y ());
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90 }
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91
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92 return graphics_object ();
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93 }
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94
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95 inline void glDrawZoomBox (const QPoint& p1, const QPoint& p2)
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96 {
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97 glVertex2d (p1.x (), p1.y ());
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98 glVertex2d (p2.x (), p1.y ());
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99 glVertex2d (p2.x (), p2.y ());
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100 glVertex2d (p1.x (), p2.y ());
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101 glVertex2d (p1.x (), p1.y ());
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102 }
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103
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104 void GLCanvas::drawZoomBox (const QPoint& p1, const QPoint& p2)
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105 {
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106 glPushMatrix ();
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107
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108 glMatrixMode (GL_MODELVIEW);
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109 glLoadIdentity ();
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110
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111 glMatrixMode (GL_PROJECTION);
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112 glLoadIdentity ();
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113 glOrtho (0, width (), height (), 0, 1, -1);
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114
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115 glPushAttrib (GL_DEPTH_BUFFER_BIT | GL_CURRENT_BIT);
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116 glDisable (GL_DEPTH_TEST);
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117
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118 glBegin (GL_POLYGON);
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119 glColor4f (0.45, 0.62, 0.81, 0.1);
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120 glDrawZoomBox (p1, p2);
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121 glEnd ();
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122
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123 glBegin (GL_LINE_STRIP);
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124 glLineWidth (1.5);
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125 glColor4f (0.45, 0.62, 0.81, 0.9);
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126 glDrawZoomBox (p1, p2);
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127 glEnd ();
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128
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129 glPopAttrib ();
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130 glPopMatrix ();
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131 }
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132
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133 void GLCanvas::paintGL (void)
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134 {
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135 canvasPaintEvent ();
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136 }
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137
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138 void GLCanvas::mouseDoubleClickEvent (QMouseEvent* xevent)
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139 {
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140 canvasMouseDoubleClickEvent (xevent);
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141 }
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142
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143 void GLCanvas::mouseMoveEvent (QMouseEvent* xevent)
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144 {
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145 canvasMouseMoveEvent (xevent);
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146 }
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147
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148 void GLCanvas::mousePressEvent (QMouseEvent* xevent)
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149 {
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150 canvasMousePressEvent (xevent);
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151 }
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152
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153 void GLCanvas::mouseReleaseEvent (QMouseEvent* xevent)
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154 {
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155 canvasMouseReleaseEvent (xevent);
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156 }
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157
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158 void GLCanvas::wheelEvent (QWheelEvent* xevent)
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159 {
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160 canvasWheelEvent (xevent);
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161 }
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162
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163 void GLCanvas::keyPressEvent (QKeyEvent* xevent)
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164 {
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165 if (! canvasKeyPressEvent (xevent))
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166 QGLWidget::keyPressEvent (xevent);
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167 }
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168
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169 void GLCanvas::keyReleaseEvent (QKeyEvent* xevent)
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170 {
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171 if (! canvasKeyReleaseEvent (xevent))
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172 QGLWidget::keyReleaseEvent (xevent);
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173 }
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174
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175 }; // namespace QtHandles