Mercurial > hg > orthanc-stone

annotate Applications/Qt/QCairoWidget.cpp @ 277:a38465cc909f am-2

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Qt: refresh ok + mouse interaction ok
author am@osimis.io
date Mon, 27 Aug 2018 14:41:49 +0200
parents 5de5699ad570
children 829163c6efc1
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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 {
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12 }
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13
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14 QCairoWidget::~QCairoWidget()
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15 {
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16 }
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17
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18 void QCairoWidget::SetContext(OrthancStone::BasicNativeApplicationContext& context)
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19 {
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20 context_ = &context;
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21 context_->GetCentralViewport().Register(*this); // get notified each time the content of the central viewport changes
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22 }
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23
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24 void QCairoWidget::paintEvent(QPaintEvent* /*event*/)
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25 {
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26 QPainter painter(this);
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27
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28 if (image_.get() != NULL && context_ != NULL)
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29 {
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30 OrthancStone::BasicNativeApplicationContext::GlobalMutexLocker locker(*context_);
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31 OrthancStone::IViewport& viewport = context_->GetCentralViewport();
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32 Orthanc::ImageAccessor a = surface_.GetAccessor();
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33 viewport.Render(a);
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34 painter.drawImage(0, 0, *image_);
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35 }
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36 else
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37 {
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38 painter.fillRect(rect(), Qt::red);
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39 }
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40 }
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41
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42 OrthancStone::KeyboardModifiers GetKeyboardModifiers(QInputEvent* event)
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43 {
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44 Qt::KeyboardModifiers qtModifiers = event->modifiers();
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45 int stoneModifiers = static_cast<int>(OrthancStone::KeyboardModifiers_None);
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46 if ((qtModifiers & Qt::AltModifier) != 0)
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47 {
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48 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Alt);
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49 }
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50 if ((qtModifiers & Qt::ControlModifier) != 0)
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51 {
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52 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Control);
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53 }
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54 if ((qtModifiers & Qt::ShiftModifier) != 0)
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55 {
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56 stoneModifiers |= static_cast<int>(OrthancStone::KeyboardModifiers_Shift);
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57 }
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58 return static_cast<OrthancStone::KeyboardModifiers>(stoneModifiers);
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59 }
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61 void QCairoWidget::mousePressEvent(QMouseEvent* event)
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62 {
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63 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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64
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65 OrthancStone::MouseButton button;
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66
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67 switch (event->button())
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68 {
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69 case Qt::LeftButton:
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70 button = OrthancStone::MouseButton_Left;
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71 break;
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72
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73 case Qt::RightButton:
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74 button = OrthancStone::MouseButton_Right;
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75 break;
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76
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77 case Qt::MiddleButton:
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78 button = OrthancStone::MouseButton_Middle;
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79 break;
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80
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81 default:
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82 return; // Unsupported button
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83 }
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84 context_->GetCentralViewport().MouseDown(button, event->pos().x(), event->pos().y(), stoneModifiers);
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85 }
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87
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88 void QCairoWidget::mouseReleaseEvent(QMouseEvent* /*eventNotUsed*/)
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89 {
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90 context_->GetCentralViewport().MouseLeave();
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91 }
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93
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94 void QCairoWidget::mouseMoveEvent(QMouseEvent* event)
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95 {
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96 context_->GetCentralViewport().MouseMove(event->pos().x(), event->pos().y());
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97 }
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98
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99
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100 void QCairoWidget::wheelEvent(QWheelEvent * event)
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101 {
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102 OrthancStone::KeyboardModifiers stoneModifiers = GetKeyboardModifiers(event);
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103
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104 if (event->orientation() == Qt::Vertical)
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105 {
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106 if (event->delta() < 0) // TODO: compare direction with SDL and make sure we send the same directions
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107 {
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108 context_->GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Up, event->pos().x(), event->pos().y(), stoneModifiers);
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109 }
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110 else
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111 {
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112 context_->GetCentralViewport().MouseWheel(OrthancStone::MouseWheelDirection_Down, event->pos().x(), event->pos().y(), stoneModifiers);
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113 }
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114 }
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115 }
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118
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119 void QCairoWidget::resizeEvent(QResizeEvent* event)
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120 {
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121 grabGesture(Qt::PanGesture);
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122 QWidget::resizeEvent(event);
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123
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124 if (event)
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125 {
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126 surface_.SetSize(event->size().width(), event->size().height());
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127
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128 image_.reset(new QImage(reinterpret_cast<uchar*>(surface_.GetBuffer()),
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129 event->size().width(),
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130 event->size().height(),
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131 surface_.GetPitch(),
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132 QImage::Format_RGB32));
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133
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134 context_->GetCentralViewport().SetSize(event->size().width(), event->size().height());
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135
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136 }
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137 }