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annotate src/AboutDialogGraphicsView.cpp @ 747:850c647d857d

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AboutDialogGraphicsView: Improved the about dialog positioning on Linux. git-svn-id: svn://svn.code.sf.net/p/universalindent/code/trunk@1024 59b1889a-e5ac-428c-b0c7-476e01d41282
author thomas_-_s <thomas_-_s@59b1889a-e5ac-428c-b0c7-476e01d41282>
date Sat, 02 Oct 2010 11:56:10 +0000
parents b30f03c1a40d
children ac165b6ae67e
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556
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1 /***************************************************************************
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2 * Copyright (C) 2006-2010 by Thomas Schweitzer *
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3 * thomas-schweitzer(at)arcor.de *
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4 * *
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5 * This program is free software; you can redistribute it and/or modify *
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6 * it under the terms of the GNU General Public License version 2.0 as *
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7 * published by the Free Software Foundation. *
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8 * *
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9 * This program is distributed in the hope that it will be useful, *
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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12 * GNU General Public License for more details. *
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13 * *
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14 * You should have received a copy of the GNU General Public License *
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15 * along with this program in the file LICENSE.GPL; if not, write to the *
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16 * Free Software Foundation, Inc., *
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17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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18 ***************************************************************************/
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19 #include <QtGui>
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20 #include "AboutDialogGraphicsView.h"
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22 /*!
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23 \class AboutDialogGraphicsView
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24 \brief A container for the real \a AboutDialog. Makes the 3D animation possible.
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25
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26 The 3D animation shall suggest the user, that he is looking at his desktop, while
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27 this animation is done. Since this is not directly possible, \a AboutDialogGraphicsView
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28 when shown starts in frameless fullscreen mode with a screenshot of the desktop as background.
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29 */
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31 /*!
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32 \brief The constructor initializes everything needed for the 3D animation.
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33 */
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34 AboutDialogGraphicsView::AboutDialogGraphicsView(AboutDialog *aboutDialog, QWidget *parent) : QGraphicsView(parent) {
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35 this->parent = parent;
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36 setWindowFlags(Qt::SplashScreen);
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37
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38 #ifdef Q_OS_LINUX
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39 QRect availableGeometry = QApplication::desktop()->availableGeometry();
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40 QRect newGeometry = QRect( availableGeometry.x(), availableGeometry.y(), availableGeometry.width(), availableGeometry.height() );
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41 #else
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42 QRect newGeometry = QRect( -1,-1, QApplication::desktop()->rect().width()+2, QApplication::desktop()->rect().height()+2 );
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43 #endif
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44 setGeometry( newGeometry );
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45
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46 this->aboutDialog = aboutDialog;
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47
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48 windowTitleBarWidth = 0;
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49 windowPosOffset = 0;
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50
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51 scene = new QGraphicsScene(this);
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52 setSceneRect( newGeometry );
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53 aboutDialogAsSplashScreen = new QSplashScreen(this);
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54 //aboutDialogAsSplashScreen->setPixmap( QPixmap::grabWidget(aboutDialog) );
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55 graphicsProxyWidget = scene->addWidget(aboutDialogAsSplashScreen);
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56 graphicsProxyWidget->setWindowFlags( Qt::ToolTip );
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57
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58 setScene( scene );
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59 setRenderHint(QPainter::Antialiasing);
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60
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61 setCacheMode(QGraphicsView::CacheBackground);
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62 setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
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63
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64 connect(aboutDialog, SIGNAL(finished(int)), this, SLOT(hide()));
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65
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66 //setWindowOpacity(0.9);
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67
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68 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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69 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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70 setStyleSheet("AboutDialogGraphicsView { border: 0px; }");
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71
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72 timeLine = new QTimeLine(1000, this);
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73 timeLine->setFrameRange(270, 0);
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74 //timeLine->setUpdateInterval(10);
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75 //timeLine->setCurveShape(QTimeLine::EaseInCurve);
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76 connect(timeLine, SIGNAL(frameChanged(int)), this, SLOT(updateStep(int)));
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77 }
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78
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79
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80 AboutDialogGraphicsView::~AboutDialogGraphicsView(void) {
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81 }
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82
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83
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84 /*!
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85 \brief Grabs a screenshot of the full desktop and shows that as background. Above that background the
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86 AboutDialog 3D animation is shown. Also grabs the content of the AboutDialog itself.
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87 */
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88 void AboutDialogGraphicsView::show() {
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89 // Because on X11 system the window decoration is only available after a widget has been shown once,
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90 // we can detect windowTitleBarWidth here for the first time.
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91 windowTitleBarWidth = parent->geometry().y() - parent->y();
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92 // If the windowTitleBarWidth could not be determined, try it a second way. Even the chances are low to get good results.
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93 if ( windowTitleBarWidth == 0 )
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94 windowTitleBarWidth = parent->frameGeometry().height() - parent->geometry().height();
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95 #ifdef Q_OS_LINUX
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96 if ( windowTitleBarWidth == 0 ) {
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97 //TODO: 27 pixel is a fix value for the Ubuntu 10.4 default window theme and so just a workaround for that specific case.
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98 windowPosOffset = 27;
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99 windowTitleBarWidth = 27;
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100 }
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101 #endif
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102 QPixmap originalPixmap = QPixmap::grabWindow(QApplication::desktop()->winId(), QApplication::desktop()->availableGeometry().x(), QApplication::desktop()->availableGeometry().y(), geometry().width(), geometry().height() );
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103 QBrush brush(originalPixmap);
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104 QTransform transform;
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105 transform.translate(0, QApplication::desktop()->availableGeometry().y());
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106 brush.setTransform(transform);
556
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107
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108 setBackgroundBrush(brush);
556
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109
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110 aboutDialogAsSplashScreen->setPixmap( QPixmap::grabWidget(aboutDialog) );
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111 graphicsProxyWidget->setGeometry( aboutDialog->geometry() );
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112 aboutDialog->hide();
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113 graphicsProxyWidget->setPos( parent->geometry().x()+(parent->geometry().width()-graphicsProxyWidget->geometry().width()) / 2, parent->y()+windowTitleBarWidth-windowPosOffset);
556
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114
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115 QRectF r = graphicsProxyWidget->boundingRect();
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116 graphicsProxyWidget->setTransform(QTransform()
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117 .translate(r.width() / 2, -windowTitleBarWidth)
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118 .rotate(270, Qt::XAxis)
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119 //.rotate(90, Qt::YAxis)
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120 //.rotate(5, Qt::ZAxis)
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121 //.scale(1 + 1.5 * step, 1 + 1.5 * step)
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122 .translate(-r.width() / 2, windowTitleBarWidth));
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123
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124 graphicsProxyWidget->show();
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125 //aboutDialogAsSplashScreen->show();
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126 QGraphicsView::show();
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127
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128 connect(timeLine, SIGNAL(finished()), this, SLOT(showAboutDialog()));
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129 timeLine->setDirection(QTimeLine::Forward);
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130 timeLine->start();
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131 }
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132
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133
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134 /*!
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135 \brief Does the next calculation/transformation step.
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136 */
635
e1fdfb9adf92 According to the previous code formatting also made the function opening brace be consistently placed.
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137 void AboutDialogGraphicsView::updateStep(int step) {
556
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138 QRectF r = graphicsProxyWidget->boundingRect();
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139 graphicsProxyWidget->setTransform(QTransform()
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140 .translate(r.width() / 2, -windowTitleBarWidth)
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141 .rotate(step, Qt::XAxis)
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142 //.rotate(step, Qt::YAxis)
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143 //.rotate(step * 5, Qt::ZAxis)
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144 //.scale(1 + 1.5 * step, 1 + 1.5 * step)
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145 .translate(-r.width() / 2, windowTitleBarWidth));
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146 //update();
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147 }
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148
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149
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150 /*!
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151 \brief Stops the 3D animation, moves the AboutDialog to the correct place and really shows it.
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152 */
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153 void AboutDialogGraphicsView::showAboutDialog() {
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154 //hide();
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155 disconnect(timeLine, SIGNAL(finished()), this, SLOT(showAboutDialog()));
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156 aboutDialog->move( int(parent->geometry().x()+(parent->geometry().width()-graphicsProxyWidget->geometry().width()) / 2), parent->y()+windowTitleBarWidth-windowPosOffset );
556
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157 aboutDialog->exec();
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158 }
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159
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160
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161 /*!
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162 \brief Does not directly hide the AboutDialog but instead starts the "fade out" 3D animation.
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163 */
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164 void AboutDialogGraphicsView::hide() {
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165 //aboutDialogAsSplashScreen->setPixmap( QPixmap::grabWidget(aboutDialog) );
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166 //graphicsProxyWidget->setGeometry( aboutDialog->geometry() );
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167 graphicsProxyWidget->setPos( parent->geometry().x()+(parent->geometry().width()-graphicsProxyWidget->geometry().width()) / 2, parent->y()+windowTitleBarWidth-windowPosOffset);
556
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168
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169 QRectF r = graphicsProxyWidget->boundingRect();
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170 graphicsProxyWidget->setTransform(QTransform()
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171 .translate(r.width() / 2, -windowTitleBarWidth)
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172 .rotate(0, Qt::XAxis)
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173 //.rotate(90, Qt::YAxis)
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174 //.rotate(5, Qt::ZAxis)
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175 //.scale(1 + 1.5 * step, 1 + 1.5 * step)
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176 .translate(-r.width() / 2, windowTitleBarWidth));
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177
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178 graphicsProxyWidget->show();
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179 //aboutDialogAsSplashScreen->show();
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180 QGraphicsView::show();
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181
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182 connect(timeLine, SIGNAL(finished()), this, SLOT(hideReally()));
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183 timeLine->setDirection(QTimeLine::Backward);
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184 timeLine->start();
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185 }
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186
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187
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188 /*!
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189 \brief This slot really hides this AboutDialog container.
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190 */
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191 void AboutDialogGraphicsView::hideReally() {
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192 disconnect(timeLine, SIGNAL(finished()), this, SLOT(hideReally()));
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193 QGraphicsView::hide();
737
9b37def27afe Updated the AboutDialogGraphicsView to show correctly on Mac and set the window focus back to the main window after closing the dialog.
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194 parent->activateWindow();
556
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195 }
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196
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197
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198 /*!
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199 \brief Makes it possible to set the screen shot used for the animation.
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200 */
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201 //TODO: Test whether this function is really still needed. Not only for debug.
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202 void AboutDialogGraphicsView::setScreenshotPixmap(const QPixmap &screenShot) {
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203 originalPixmap = screenShot;
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204 }