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annotate libgui/graphics/GLCanvas.cc @ 20079:815db217f6f4

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provide autoscale option for Qt plotting (bug #44307) * Canvas.h, Canvas.cc (Canvas::autoAxes): New pure virtual function. (Canvas::canvasAutoAxes): New function. (autoscale_axes): New static function. (Canvas::canvasMouseDoubleClickEvent, Canvas::canvasMousePressEvent): Use it. * Figure.h, Figure.cc (Figure::createFigureToolBarAndMenuBar): Add autoscale button to window. (Figure::autoAxes): New function. * GLCanvas.h, GLCanvas.cc (GLCanvas::autoAxes): New function.
author John W. Eaton <jwe@octave.org>
date Fri, 27 Feb 2015 11:24:12 -0500
parents dfea01b3425f
children b6061813a693
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 graphics_object go = gh_manager::get_object (gh);
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53
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54 if (go)
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55 {
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56 opengl_renderer r;
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57
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58 r.set_viewport (width (), height ());
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59 r.draw(go);
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60 }
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61 }
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62
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63 void GLCanvas::toggleAxes (const graphics_handle& gh)
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64 {
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65 canvasToggleAxes (gh);
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66 }
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67
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68 void GLCanvas::toggleGrid (const graphics_handle& gh)
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69 {
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70 canvasToggleGrid (gh);
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71 }
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72
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73 void GLCanvas::autoAxes (const graphics_handle& gh)
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74 {
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75 canvasAutoAxes (gh);
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76 }
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77
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78 graphics_object GLCanvas::selectFromAxes (const graphics_object& ax,
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79 const QPoint& pt)
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80 {
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81 makeCurrent ();
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82
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83 if (ax)
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84 {
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85 opengl_selector s;
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86
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87 s.set_viewport (width (), height ());
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88 return s.select (ax, pt.x (), height () - pt.y ());
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89 }
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90
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91 return graphics_object ();
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92 }
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93
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94 inline void glDrawZoomBox (const QPoint& p1, const QPoint& p2)
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95 {
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96 glVertex2d (p1.x (), p1.y ());
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97 glVertex2d (p2.x (), p1.y ());
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98 glVertex2d (p2.x (), p2.y ());
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99 glVertex2d (p1.x (), p2.y ());
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100 glVertex2d (p1.x (), p1.y ());
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101 }
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102
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103 void GLCanvas::drawZoomBox (const QPoint& p1, const QPoint& p2)
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104 {
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105 glPushMatrix ();
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106
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107 glMatrixMode (GL_MODELVIEW);
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108 glLoadIdentity ();
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109
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110 glMatrixMode (GL_PROJECTION);
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111 glLoadIdentity ();
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112 glOrtho (0, width (), height (), 0, 1, -1);
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113
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114 glPushAttrib (GL_DEPTH_BUFFER_BIT | GL_CURRENT_BIT);
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115 glDisable (GL_DEPTH_TEST);
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116
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117 glBegin (GL_POLYGON);
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118 glColor4f (0.45, 0.62, 0.81, 0.1);
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119 glDrawZoomBox (p1, p2);
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120 glEnd ();
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121
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122 glBegin (GL_LINE_STRIP);
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123 glLineWidth (1.5);
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124 glColor4f (0.45, 0.62, 0.81, 0.9);
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125 glDrawZoomBox (p1, p2);
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126 glEnd ();
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127
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128 glPopAttrib ();
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129 glPopMatrix ();
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130 }
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131
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132 void GLCanvas::paintGL (void)
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133 {
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134 canvasPaintEvent ();
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135 }
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136
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137 void GLCanvas::mouseDoubleClickEvent (QMouseEvent* xevent)
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138 {
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139 canvasMouseDoubleClickEvent (xevent);
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140 }
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141
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142 void GLCanvas::mouseMoveEvent (QMouseEvent* xevent)
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143 {
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144 canvasMouseMoveEvent (xevent);
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145 }
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146
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147 void GLCanvas::mousePressEvent (QMouseEvent* xevent)
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148 {
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149 canvasMousePressEvent (xevent);
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150 }
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151
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152 void GLCanvas::mouseReleaseEvent (QMouseEvent* xevent)
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153 {
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154 canvasMouseReleaseEvent (xevent);
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155 }
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156
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157 void GLCanvas::wheelEvent (QWheelEvent* xevent)
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158 {
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159 canvasWheelEvent (xevent);
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160 }
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161
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162 void GLCanvas::keyPressEvent (QKeyEvent* xevent)
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163 {
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164 if (! canvasKeyPressEvent (xevent))
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165 QGLWidget::keyPressEvent (xevent);
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166 }
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167
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168 void GLCanvas::keyReleaseEvent (QKeyEvent* xevent)
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169 {
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170 if (! canvasKeyReleaseEvent (xevent))
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171 QGLWidget::keyReleaseEvent (xevent);
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172 }
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173
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174 }; // namespace QtHandles