Mercurial > hg > orthanc-stone

annotate Applications/Qt/QCairoWidget.cpp @ 327:8716176ff7f0 am-2

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added support for arrow keys
author am@osimis.io
date Tue, 16 Oct 2018 15:25:21 +0200
parents 3a4ca166fafa
children 557c8ff1db5c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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) 2017-2018 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 QCairoWidget::QCairoWidget(QWidget *parent) :
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29 QWidget(parent),
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30 context_(NULL)
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31 {
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32 setFocusPolicy(Qt::StrongFocus); // catch keyPressEvents
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33 }
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34
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35 QCairoWidget::~QCairoWidget()
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36 {
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37 }
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38
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39 void QCairoWidget::SetContext(OrthancStone::NativeStoneApplicationContext& context)
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40 {
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41 context_ = &context;
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42 context_->GetCentralViewport().Register(*this); // get notified each time the content of the central viewport changes
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43 }
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44
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45 void QCairoWidget::paintEvent(QPaintEvent* /*event*/)
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46 {
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47 QPainter painter(this);
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48
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49 if (image_.get() != NULL && context_ != NULL)
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50 {
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51 OrthancStone::NativeStoneApplicationContext::GlobalMutexLocker locker(*context_);
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52 OrthancStone::IViewport& viewport = context_->GetCentralViewport();
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53 Orthanc::ImageAccessor a;
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54 surface_.GetAccessor(a);
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55 viewport.Render(a);
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56 painter.drawImage(0, 0, *image_);
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57 }
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58 else
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59 {
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60 painter.fillRect(rect(), Qt::red);
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61 }
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62 }
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63
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64 OrthancStone::KeyboardModifiers GetKeyboardModifiers(QInputEvent* event)
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65 {
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66 Qt::KeyboardModifiers qtModifiers = event->modifiers();
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67 int stoneModifiers = static_cast<int>(OrthancStone::KeyboardModifiers_None);
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68 if ((qtModifiers & Qt::AltModifier) != 0)
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69 {
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70 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Alt);
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71 }
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72 if ((qtModifiers & Qt::ControlModifier) != 0)
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73 {
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74 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Control);
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75 }
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76 if ((qtModifiers & Qt::ShiftModifier) != 0)
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77 {
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78 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Shift);
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79 }
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80 return static_cast<OrthancStone::KeyboardModifiers>(stoneModifiers);
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81 }
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82
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83 void QCairoWidget::mousePressEvent(QMouseEvent* event)
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84 {
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85 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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86
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87 OrthancStone::MouseButton button;
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88
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89 switch (event->button())
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90 {
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91 case Qt::LeftButton:
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92 button = OrthancStone::MouseButton_Left;
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93 break;
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94
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95 case Qt::RightButton:
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96 button = OrthancStone::MouseButton_Right;
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97 break;
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98
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99 case Qt::MiddleButton:
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100 button = OrthancStone::MouseButton_Middle;
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101 break;
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102
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103 default:
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104 return; // Unsupported button
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105 }
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106 context_->GetCentralViewport().MouseDown(button, event->pos().x(), event->pos().y(), stoneModifiers);
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107 }
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109
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110 void QCairoWidget::mouseReleaseEvent(QMouseEvent* /*eventNotUsed*/)
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111 {
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112 context_->GetCentralViewport().MouseLeave();
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113 }
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115
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116 void QCairoWidget::mouseMoveEvent(QMouseEvent* event)
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117 {
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118 context_->GetCentralViewport().MouseMove(event->pos().x(), event->pos().y());
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119 }
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122 void QCairoWidget::wheelEvent(QWheelEvent * event)
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123 {
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124 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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125
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126 if (event->orientation() == Qt::Vertical)
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127 {
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128 if (event->delta() < 0) // TODO: compare direction with SDL and make sure we send the same directions
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129 {
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130 context_->GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Up, event->pos().x(), event->pos().y(), stoneModifiers);
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131 }
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132 else
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133 {
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134 context_->GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Down, event->pos().x(), event->pos().y(), stoneModifiers);
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135 }
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136 }
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137 }
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138
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139 void QCairoWidget::keyPressEvent(QKeyEvent *event)
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140 {
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141 using namespace OrthancStone;
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142
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143 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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144
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145 OrthancStone::KeyboardKeys keyType = OrthancStone::KeyboardKeys_Generic;
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146 char keyChar = event->text()[0].toLatin1();
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147
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148 #define CASE_QT_KEY_TO_ORTHANC(qt, o) case qt: keyType = o; break;
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149 if (keyChar == 0)
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150 {
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151 switch (event->key())
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152 {
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153 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Up, KeyboardKeys_Up);
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154 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Down, KeyboardKeys_Down);
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155 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Left, KeyboardKeys_Left);
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156 CASE_QT_KEY_TO_ORTHANC(Qt::Key_Right, KeyboardKeys_Right);
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157 default:
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158 break;
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159 }
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160 }
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161 context_->GetCentralViewport().KeyPressed(keyType, keyChar, stoneModifiers);
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162 }
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164
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165 void QCairoWidget::resizeEvent(QResizeEvent* event)
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166 {
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167 grabGesture(Qt::PanGesture);
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168 QWidget::resizeEvent(event);
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169
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170 if (event)
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171 {
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172 surface_.SetSize(event->size().width(), event->size().height());
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173
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174 image_.reset(new QImage(reinterpret_cast<uchar*>(surface_.GetBuffer()),
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175 event->size().width(),
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176 event->size().height(),
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177 surface_.GetPitch(),
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178 QImage::Format_RGB32));
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179
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180 context_->GetCentralViewport().SetSize(event->size().width(), event->size().height());
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181
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182 }
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183 }