Mercurial > hg > octave-lyh

annotate gui/src/Plot2dWidget.cpp @ 13470:f7356554594c

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Plot can be moved around with mouse and zoomed with scrollwheel.
author Jacob Dawid <jacob.dawid@googlemail.com>
date Wed, 20 Apr 2011 09:59:04 +0200
parents a20f8763105f
children 4baf5e6bba13
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13469
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1 #include "Plot2dWidget.h"
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2 #include <QVBoxLayout>
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3 #include <QHBoxLayout>
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4 #include <QPushButton>
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5 #include <QTimer>
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6 #include <math.h>
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7
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8 Plot2dView::Plot2dView(QWidget *parent)
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9 : QGLWidget(parent) {
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10 construct();
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11 }
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12
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13 void Plot2dView::construct() {
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14 QTimer *animationTimer = new QTimer(this);
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15 animationTimer->setInterval(20);
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16 animationTimer->start();
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17 m_zoom = 1.0;
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18 m_scrollX = 0.0;
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19 m_scrollY = 0.0;
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20 m_leftMouseButtonDown = false;
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21 connect(animationTimer, SIGNAL(timeout()), this, SLOT(animate()));
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22 }
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23
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24 void Plot2dView::initializeGL() {
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25 glClearColor(0.0,0.0, 0.0, 0.0);
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26 glEnable(GL_POINT_SMOOTH);
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27 // glEnable(GL_LINE_SMOOTH);
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28 glEnable(GL_POLYGON_SMOOTH);
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29 glEnable(GL_BLEND);
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30 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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31 }
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32
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33 void Plot2dView::paintGL() {
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34 glMatrixMode(GL_MODELVIEW_MATRIX);
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35 glLoadIdentity();
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36 glScaled(m_zoom, m_zoom, 0.0);
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37 glTranslated(-0.5 - m_scrollX, -0.5 - m_scrollY, 0.0);
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38
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39 glClear(GL_COLOR_BUFFER_BIT);
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40 glBegin(GL_LINES);
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41 glColor3d(1.0, 1.0, 1.0);
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42 glVertex2d(0.1, 0.1);
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43 glVertex2d(0.9, 0.1);
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44 glVertex2d(0.1, 0.1);
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45 glVertex2d(0.1, 0.9);
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46 glEnd();
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47
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48 glBegin(GL_POLYGON);
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49 glVertex2d(0.092, 0.9);
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50 glVertex2d(0.108, 0.9);
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51 glVertex2d(0.1, 0.92);
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52 glEnd();
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53 glBegin(GL_POLYGON);
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54 glVertex2d(0.9, 0.092);
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55 glVertex2d(0.9, 0.108);
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56 glVertex2d(0.92, 0.1);
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57 glEnd();
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58
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59 renderText(0.8, 0.05, 0.0, "axis");
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60 }
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61
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62 void Plot2dView::resizeGL(int w, int h) {
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63 glViewport(0, 0, w, h);
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64 glMatrixMode(GL_MODELVIEW_MATRIX);
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65 glLoadIdentity();
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66
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67 glMatrixMode(GL_PROJECTION_MATRIX);
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68 glLoadIdentity();
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69 glOrtho(-1.0, 1.0, -1.0, 1.0, 0.0, 100.0);
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70 }
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71
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72 void Plot2dView::wheelEvent(QWheelEvent *wheelEvent) {
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73 m_zoomAcceleration += ((double)wheelEvent->delta()) / 5000;
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74 wheelEvent->accept();
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75 updateGL();
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76 }
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77
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78 void Plot2dView::mousePressEvent(QMouseEvent *mouseEvent) {
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79 if(mouseEvent->button() == Qt::LeftButton) {
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80 m_leftMouseButtonDown = true;
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81 m_lastMouseButtonDownX = mouseEvent->x();
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82 m_lastMouseButtonDownY = mouseEvent->y();
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83 mouseEvent->accept();
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84 }
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85 }
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86
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87 void Plot2dView::mouseReleaseEvent(QMouseEvent *mouseEvent) {
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88 if(mouseEvent->button() == Qt::LeftButton) {
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89 m_leftMouseButtonDown = false;
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90 mouseEvent->accept();
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91 }
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92 }
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93
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94 void Plot2dView::mouseMoveEvent(QMouseEvent *mouseEvent) {
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95 if(m_leftMouseButtonDown) {
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96 m_scrollX -= ((double)mouseEvent->x() - m_lastMouseButtonDownX) / 100;
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97 m_scrollY += ((double)mouseEvent->y() - m_lastMouseButtonDownY) / 100;
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98 m_lastMouseButtonDownX = (double)mouseEvent->x();
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99 m_lastMouseButtonDownY = (double)mouseEvent->y();
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100 }
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101 updateGL();
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102 }
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103
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104 void Plot2dView::animate() {
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105 m_zoom += m_zoomAcceleration;
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106 if(m_zoom < 0)
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107 m_zoom = 0;
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108 m_zoomAcceleration *= 0.2;
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109 if(abs(m_zoomAcceleration) < 0.01)
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110 m_zoomAcceleration = 0;
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111 updateGL();
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112 }
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113
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114 Plot2dWidget::Plot2dWidget(QWidget *parent)
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115 : QWidget(parent) {
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116 construct();
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117 }
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118
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119 void Plot2dWidget::construct() {
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120 QVBoxLayout *layout = new QVBoxLayout();
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121 m_plot2dView = new Plot2dView(this);
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122 m_plot2dView->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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123 layout->addWidget(m_plot2dView);
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124
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125 m_tabWidget = new QTabWidget(this);
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126 m_tabWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
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127 layout->addWidget(m_tabWidget);
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128
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129 m_dataSourceTab = new QWidget(this);
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130 m_verticalAxisTab = new QWidget(this);
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131 m_horizontalAxisTab = new QWidget(this);
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132 m_tabWidget->addTab(m_dataSourceTab, tr("Data Source"));
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133 m_tabWidget->addTab(m_verticalAxisTab, tr("Vertical Axis"));
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134 m_tabWidget->addTab(m_horizontalAxisTab, tr("Horizontal Axis"));
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135
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136 // Build data source tab.
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137 QHBoxLayout *dataSourceTabLayout = new QHBoxLayout();
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138
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139 m_dataSourceTypeComboBox = new QComboBox(this);
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140 m_dataSourceTypeComboBox->addItem(tr("Parameterized"));
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141 m_dataSourceTypeComboBox->addItem(tr("Sampled"));
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142 dataSourceTabLayout->addWidget(m_dataSourceTypeComboBox);
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143 dataSourceTabLayout->addStretch();
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144 m_dataSourceTab->setLayout(dataSourceTabLayout);
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145
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146 layout->setMargin(0);
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147 setLayout(layout);
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148
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149 }