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annotate Applications/Qt/QCairoWidget.cpp @ 276:5de5699ad570 am-2

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first display in QCairoWidget; no mouse interaction yet
author am@osimis.io
date Mon, 27 Aug 2018 12:21:52 +0200
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children a38465cc909f
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276
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1 #include "QCairoWidget.h"
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2
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3 #include <QPainter>
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4 #include <QPaintEvent>
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5
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6 #include <stdexcept>
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7
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8 QCairoWidget::QCairoWidget(QWidget *parent) :
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9 QWidget(parent),
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10 context_(NULL),
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11 isMouseOver_(false),
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12 mouseOverX_(0),
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13 mouseOverY_(0)
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14 {
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15 setMouseTracking(true);
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16 updateNeeded_ = true;
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17 }
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18
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19
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20
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21 QCairoWidget::~QCairoWidget()
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22 {
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23 }
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24
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25
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26 void QCairoWidget::paintEvent(QPaintEvent* event)
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27 {
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28 QPainter painter(this);
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29
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30 if (image_.get() != NULL && context_ != NULL)
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31 {
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32 OrthancStone::BasicNativeApplicationContext::GlobalMutexLocker locker(*context_);
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33 OrthancStone::IViewport& vp = context_->GetCentralViewport();
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34 Orthanc::ImageAccessor a = surface_.GetAccessor();
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35 vp.Render(a);
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36 //image_->fill(0);
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37 painter.drawImage(0, 0, *image_);
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38 }
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39 else
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40 {
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41 painter.fillRect(rect(), Qt::red);
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42 }
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43 }
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44
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45
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46 //static void GetPixelCenter(double& x,
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47 // double& y,
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48 // const QMouseEvent* event)
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49 //{
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50 // x = static_cast<double>(event->x()) + 0.5;
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51 // y = static_cast<double>(event->y()) + 0.5;
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52 //}
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53
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54
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55 //void QCairoWidget::mousePressEvent(QMouseEvent* event)
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56 //{
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57 // if (mouseTracker_.get() == NULL)
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58 // {
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59 // OrthancStone::MouseButton button;
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60
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61 // switch (event->button())
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62 // {
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63 // case Qt::LeftButton:
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64 // button = OrthancStone::MouseButton_Left;
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65 // break;
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66
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67 // case Qt::RightButton:
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68 // button = OrthancStone::MouseButton_Right;
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69 // break;
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70
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71 // case Qt::MiddleButton:
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72 // button = OrthancStone::MouseButton_Middle;
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73 // break;
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74
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75 // default:
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76 // return; // Unsupported button
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77 // }
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78
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79 // double x, y;
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80 // GetPixelCenter(x, y, event);
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81 ////TODO mouseTracker_.reset(viewport_.CreateMouseTracker(*scene_, button, x, y));
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82 // repaint();
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83 // }
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84 //}
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85
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86
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87 //void QCairoWidget::mouseReleaseEvent(QMouseEvent* event)
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88 //{
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89 // if (mouseTracker_.get() != NULL)
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90 // {
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91 // mouseTracker_->MouseUp();
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92 // mouseTracker_.reset(NULL);
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93 // repaint();
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94 // }
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95 //}
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96
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97
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98 //void QCairoWidget::mouseMoveEvent(QMouseEvent* event)
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99 //{
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100 // if (mouseTracker_.get() == NULL)
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101 // {
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102 // if (rect().contains(event->pos()))
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103 // {
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104 // // Mouse over widget
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105 // isMouseOver_ = true;
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106 // mouseOverX_ = event->x();
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107 // mouseOverY_ = event->y();
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108 // }
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109 // else
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110 // {
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111 // // Mouse out of widget
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112 // isMouseOver_ = false;
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113 // }
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114 // }
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115 // else
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116 // {
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117 // double x, y;
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118 // GetPixelCenter(x, y, event);
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119 // mouseTracker_->MouseMove(x, y);
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120 // isMouseOver_ = false;
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121 // }
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122
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123 //// if (isMouseOver_)
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124 //// {
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125 //// UpdateMouseCoordinates(event->x(), event->y());
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126 //// }
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127
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128 // repaint();
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129 //}
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130
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131
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132 //void QCairoWidget::wheelEvent(QWheelEvent * event)
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133 //{
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134 // if (mouseTracker_.get() == NULL)
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135 // {
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136 //#if 0
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137 // double x = static_cast<double>(event->x()) + 0.5;
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138 // double y = static_cast<double>(event->y()) + 0.5;
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139 // mouseTracker_.reset(viewport_.CreateMouseTracker(*scene_, MouseButton_Middle, x, y));
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140
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141 // switch (event->orientation())
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142 // {
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143 // case Qt::Horizontal:
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144 // x += event->delta();
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145 // break;
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146
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147 // case Qt::Vertical:
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148 // y += event->delta();
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149 // break;
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150
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151 // default:
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152 // break;
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153 // }
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154
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155 // mouseTracker_->MouseMove(x, y);
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156 // mouseTracker_->MouseUp();
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157 // mouseTracker_.reset(NULL);
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158
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159 // repaint();
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160 //#else
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161 // if (event->orientation() == Qt::Vertical)
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162 // {
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163 // unsigned int slice = scene_->GetCurrentSlice();
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164
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165 // if (event->delta() < 0)
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166 // {
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167 // if (slice > 0)
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168 // {
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169 // scene_->SetCurrentSlice(slice - 1);
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170 // emit SliceChanged(slice - 1);
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171 // }
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172 // }
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173 // else
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174 // {
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175 // if (slice + 1 < scene_->GetSlicesCount())
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176 // {
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177 // scene_->SetCurrentSlice(slice + 1);
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178 // emit SliceChanged(slice + 1);
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179 // }
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180 // }
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181
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182 // repaint();
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183 // }
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184 //#endif
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185 // }
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186
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187 // UpdateMouseCoordinates(event->x(), event->y());
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188 //}
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189
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190
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191
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192 void QCairoWidget::resizeEvent(QResizeEvent* event)
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193 {
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194 grabGesture(Qt::PanGesture);
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195 QWidget::resizeEvent(event);
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196
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197 if (event)
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198 {
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199 surface_.SetSize(event->size().width(), event->size().height());
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200
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201 image_.reset(new QImage(reinterpret_cast<uchar*>(surface_.GetBuffer()),
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202 event->size().width(),
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203 event->size().height(),
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204 surface_.GetPitch(),
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205 QImage::Format_RGB32));
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206
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207 context_->GetCentralViewport().SetSize(event->size().width(), event->size().height());
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208
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209 }
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210 }
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211
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212 //void QCairoWidget::UpdateMouseCoordinates(int x,
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213 // int y)
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214 //{
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215 // if (scene_ != NULL)
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216 // {
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217 // double cx = static_cast<double>(x) + 0.5;
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218 // double cy = static_cast<double>(y) + 0.5;
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219
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220 // std::string coordinates;
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221 // viewport_.FormatCoordinates(coordinates, *scene_, cx, cy);
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222
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223 // emit PositionChanged(QString(coordinates.c_str()));
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224 // }
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225 //}
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226
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227
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228 //void QCairoWidget::SetDefaultView()
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229 //{
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230 // viewport_.SetDefaultView();
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231 // repaint();
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232 //}
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233
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234
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235 //void QCairoWidget::Refresh()
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236 //{
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237 // if (scene_ != NULL &&
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238 // updateNeeded_)
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239 // {
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240 // updateNeeded_ = false;
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241 // emit ContentChanged();
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242 // repaint();
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243 // }
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244 //}
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245
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246
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247 //void QCairoWidget::SetSlice(int index)
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248 //{
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249 // if (scene_ != NULL &&
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250 // index >= 0 &&
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251 // index < static_cast<int>(scene_->GetSlicesCount()))
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252 // {
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253 // scene_->SetCurrentSlice(index);
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254 // emit SliceChanged(index);
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255 // repaint();
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256 // }
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257 //}