Mercurial > hg > orthanc-stone

annotate Applications/Qt/QCairoWidget.cpp @ 884:aad5ccf1be10 am-dev

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cleanup
author Alain Mazy <alain@mazy.be>
date Tue, 09 Jul 2019 14:43:00 +0200
parents fe938bddb932
children 922d2e61aa5d
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21 #include "QCairoWidget.h"
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22
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23 #include <QPainter>
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24 #include <QPaintEvent>
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25
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26 #include <stdexcept>
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27
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28
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29 QCairoWidget::StoneObserver::StoneObserver(QCairoWidget& that,
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30 Deprecated::IViewport& viewport,
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31 OrthancStone::MessageBroker& broker) :
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32 OrthancStone::IObserver(broker),
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33 that_(that)
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34 {
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35 // get notified each time the content of the central viewport changes
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36 viewport.RegisterObserverCallback(
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37 new OrthancStone::Callable<StoneObserver, Deprecated::IViewport::ViewportChangedMessage>
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38 (*this, &StoneObserver::OnViewportChanged));
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39 }
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40
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41
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42 QCairoWidget::QCairoWidget(QWidget *parent) :
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43 QWidget(parent),
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44 context_(NULL)
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45 {
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46 setFocusPolicy(Qt::StrongFocus); // catch keyPressEvents
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47 }
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48
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49
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50 void QCairoWidget::SetContext(OrthancStone::NativeStoneApplicationContext& context)
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51 {
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52 context_ = &context;
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53
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54 {
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55 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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56 observer_.reset(new StoneObserver(*this,
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57 locker.GetCentralViewport(),
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58 locker.GetMessageBroker()));
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59 }
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60 }
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62
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63 void QCairoWidget::paintEvent(QPaintEvent* /*event*/)
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64 {
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65 QPainter painter(this);
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66
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67 if (image_.get() != NULL &&
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68 context_ != NULL)
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69 {
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70 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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71 Deprecated::IViewport& viewport = locker.GetCentralViewport();
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72 Orthanc::ImageAccessor a;
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73 surface_.GetWriteableAccessor(a);
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74 viewport.Render(a);
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75 painter.drawImage(0, 0, *image_);
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76 }
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77 else
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78 {
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79 painter.fillRect(rect(), Qt::red);
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80 }
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81 }
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82
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83 OrthancStone::KeyboardModifiers GetKeyboardModifiers(QInputEvent* event)
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84 {
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85 Qt::KeyboardModifiers qtModifiers = event->modifiers();
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86 int stoneModifiers = static_cast<int>(OrthancStone::KeyboardModifiers_None);
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87 if ((qtModifiers & Qt::AltModifier) != 0)
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88 {
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89 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Alt);
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90 }
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91 if ((qtModifiers & Qt::ControlModifier) != 0)
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92 {
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93 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Control);
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94 }
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95 if ((qtModifiers & Qt::ShiftModifier) != 0)
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96 {
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97 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Shift);
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98 }
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99 return static_cast<OrthancStone::KeyboardModifiers>(stoneModifiers);
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100 }
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101
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102 void QCairoWidget::mousePressEvent(QMouseEvent* event)
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103 {
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104 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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105
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106 OrthancStone::MouseButton button;
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107
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108 switch (event->button())
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109 {
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110 case Qt::LeftButton:
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111 button = OrthancStone::MouseButton_Left;
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112 break;
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113
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114 case Qt::RightButton:
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115 button = OrthancStone::MouseButton_Right;
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116 break;
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117
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118 case Qt::MiddleButton:
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119 button = OrthancStone::MouseButton_Middle;
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120 break;
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121
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122 default:
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123 return; // Unsupported button
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124 }
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125
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126 {
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127 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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128 locker.GetCentralViewport().MouseDown(button, event->pos().x(), event->pos().y(), stoneModifiers, std::vector<Deprecated::Touch>());
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129 }
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130 }
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132
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133 void QCairoWidget::mouseReleaseEvent(QMouseEvent* /*eventNotUsed*/)
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134 {
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135 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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136 locker.GetCentralViewport().MouseLeave();
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137 }
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138
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139
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140 void QCairoWidget::mouseMoveEvent(QMouseEvent* event)
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141 {
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142 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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143 locker.GetCentralViewport().MouseMove(event->pos().x(), event->pos().y(), std::vector<Deprecated::Touch>());
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144 }
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145
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146
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147 void QCairoWidget::wheelEvent(QWheelEvent * event)
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148 {
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149 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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150
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151 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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152
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153 if (event->orientation() == Qt::Vertical)
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154 {
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155 if (event->delta() < 0) // TODO: compare direction with SDL and make sure we send the same directions
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156 {
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157 locker.GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Up, event->pos().x(), event->pos().y(), stoneModifiers);
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158 }
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159 else
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160 {
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161 locker.GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Down, event->pos().x(), event->pos().y(), stoneModifiers);
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162 }
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163 }
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164 }
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165
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166 void QCairoWidget::keyPressEvent(QKeyEvent *event)
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167 {
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168 using namespace OrthancStone;
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169
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170 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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171
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172 OrthancStone::KeyboardKeys keyType = OrthancStone::KeyboardKeys_Generic;
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173 char keyChar = event->text()[0].toLatin1();
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174
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175 #define CASE_QT_KEY_TO_ORTHANC(qt, o) case qt: keyType = o; break;
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176 if (keyChar == 0)
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177 {
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178 switch (event->key())
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179 {
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180 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Up, KeyboardKeys_Up);
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181 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Down, KeyboardKeys_Down);
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182 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Left, KeyboardKeys_Left);
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183 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Right, KeyboardKeys_Right);
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184 default:
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185 break;
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186 }
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187 }
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188
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189 {
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190 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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191 locker.GetCentralViewport().KeyPressed(keyType, keyChar, stoneModifiers);
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192 }
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193 }
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194
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195
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196 void QCairoWidget::resizeEvent(QResizeEvent* event)
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197 {
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198 grabGesture(Qt::PanGesture);
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199 QWidget::resizeEvent(event);
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200
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201 if (event)
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202 {
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203 surface_.SetSize(event->size().width(), event->size().height(), true);
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204
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205 image_.reset(new QImage(reinterpret_cast<uchar*>(surface_.GetBuffer()),
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206 event->size().width(),
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207 event->size().height(),
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208 surface_.GetPitch(),
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209 QImage::Format_RGB32));
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210
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211 {
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212 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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213 locker.GetCentralViewport().SetSize(event->size().width(), event->size().height());
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214 }
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215 }
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216 }