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Diffstat (limited to 'src/AboutDialogGraphicsView.cpp')
| -rwxr-xr-x | src/AboutDialogGraphicsView.cpp | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/AboutDialogGraphicsView.cpp b/src/AboutDialogGraphicsView.cpp new file mode 100755 index 0000000..d97cc70 --- /dev/null +++ b/src/AboutDialogGraphicsView.cpp @@ -0,0 +1,206 @@ +/*************************************************************************** +* Copyright (C) 2006-2012 by Thomas Schweitzer * +* thomas-schweitzer(at)arcor.de * +* * +* This program is free software; you can redistribute it and/or modify * +* it under the terms of the GNU General Public License version 2.0 as * +* published by the Free Software Foundation. * +* * +* This program is distributed in the hope that it will be useful, * +* but WITHOUT ANY WARRANTY; without even the implied warranty of * +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * +* GNU General Public License for more details. * +* * +* You should have received a copy of the GNU General Public License * +* along with this program in the file LICENSE.GPL; if not, write to the * +* Free Software Foundation, Inc., * +* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * +***************************************************************************/ + +#include "AboutDialogGraphicsView.h" + +#include "AboutDialog.h" + +#include <QtGui> +#include <QDesktopWidget> +#include <QDate> +#include <QTimeLine> +#include <QSplashScreen> + +/*! + \class AboutDialogGraphicsView + \brief A container for the real \a AboutDialog. Makes the 3D animation possible. + + The 3D animation shall suggest the user, that he is looking at his desktop, while + this animation is done. Since this is not directly possible, \a AboutDialogGraphicsView + when shown starts in frameless fullscreen mode with a screenshot of the desktop as background. +*/ + +/*! + \brief The constructor initializes everything needed for the 3D animation. + */ +AboutDialogGraphicsView::AboutDialogGraphicsView(AboutDialog *aboutDialog, QWidget *parentWindow) : QGraphicsView(parentWindow) + , _aboutDialog(NULL) + , _graphicsProxyWidget(NULL) + , _parentWindow(NULL) + , _timeLine(NULL) + , _aboutDialogAsSplashScreen(NULL) +{ + _parentWindow = parentWindow; + setWindowFlags(Qt::SplashScreen); + +#ifdef Q_OS_LINUX + QRect availableGeometry = QApplication::desktop()->availableGeometry(); + QRect newGeometry = QRect( availableGeometry.x(), availableGeometry.y(), availableGeometry.width(), availableGeometry.height() ); +#else + QRect newGeometry = QRect( -1,-1, QApplication::desktop()->rect().width()+2, QApplication::desktop()->rect().height()+2 ); +#endif + setGeometry( newGeometry ); + + _aboutDialog = aboutDialog; + + _windowTitleBarWidth = 0; + _windowPosOffset = 0; + + QGraphicsScene *scene = new QGraphicsScene(this); + setSceneRect( newGeometry ); + _aboutDialogAsSplashScreen = new QSplashScreen(this); + _graphicsProxyWidget = scene->addWidget(_aboutDialogAsSplashScreen); + _graphicsProxyWidget->setWindowFlags( Qt::ToolTip ); + + setScene( scene ); + setRenderHint(QPainter::Antialiasing); + + setCacheMode(QGraphicsView::CacheBackground); + setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); + + connect(_aboutDialog, SIGNAL(finished(int)), this, SLOT(hide())); + + //setWindowOpacity(0.9); + + setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + setStyleSheet("AboutDialogGraphicsView { border: 0px; }"); + + _timeLine = new QTimeLine(1000, this); + _timeLine->setFrameRange(270, 0); + //_timeLine->setUpdateInterval(10); + //_timeLine->setCurveShape(QTimeLine::EaseInCurve); + connect(_timeLine, SIGNAL(frameChanged(int)), this, SLOT(updateStep(int))); +} + + +AboutDialogGraphicsView::~AboutDialogGraphicsView(void) { +} + + +/*! + \brief Grabs a screenshot of the full desktop and shows that as background. Above that background the + AboutDialog 3D animation is shown. Also grabs the content of the AboutDialog itself. + */ +void AboutDialogGraphicsView::show() { + // Because on X11 system the window decoration is only available after a widget has been shown once, + // we can detect _windowTitleBarWidth here for the first time. + _windowTitleBarWidth = _parentWindow->geometry().y() - _parentWindow->y(); + // If the _windowTitleBarWidth could not be determined, try it a second way. Even the chances are low to get good results. + if ( _windowTitleBarWidth == 0 ) + _windowTitleBarWidth = _parentWindow->frameGeometry().height() - _parentWindow->geometry().height(); +#ifdef Q_OS_LINUX + if ( _windowTitleBarWidth == 0 ) { + //TODO: 27 pixel is a fix value for the Ubuntu 10.4 default window theme and so just a workaround for that specific case. + _windowPosOffset = 27; + _windowTitleBarWidth = 27; + } +#endif + QPixmap originalPixmap = QPixmap::grabWindow(QApplication::desktop()->winId(), QApplication::desktop()->availableGeometry().x(), QApplication::desktop()->availableGeometry().y(), geometry().width(), geometry().height() ); + QBrush brush(originalPixmap); + QTransform transform; + transform.translate(0, QApplication::desktop()->availableGeometry().y()); + brush.setTransform(transform); + + setBackgroundBrush(brush); + + _aboutDialogAsSplashScreen->setPixmap( QPixmap::grabWidget(_aboutDialog) ); + _graphicsProxyWidget->setGeometry( _aboutDialog->geometry() ); + _aboutDialog->hide(); + _graphicsProxyWidget->setPos( _parentWindow->geometry().x()+(_parentWindow->geometry().width()-_graphicsProxyWidget->geometry().width()) / 2, _parentWindow->y()+_windowTitleBarWidth-_windowPosOffset); + + QRectF r = _graphicsProxyWidget->boundingRect(); + _graphicsProxyWidget->setTransform(QTransform() + .translate(r.width() / 2, -_windowTitleBarWidth) + .rotate(270, Qt::XAxis) + //.rotate(90, Qt::YAxis) + //.rotate(5, Qt::ZAxis) + //.scale(1 + 1.5 * step, 1 + 1.5 * step) + .translate(-r.width() / 2, _windowTitleBarWidth)); + + _graphicsProxyWidget->show(); + //_aboutDialogAsSplashScreen->show(); + QGraphicsView::show(); + + connect(_timeLine, SIGNAL(finished()), this, SLOT(showAboutDialog())); + _timeLine->setDirection(QTimeLine::Forward); + _timeLine->start(); +} + + +/*! + \brief Does the next calculation/transformation step. + */ +void AboutDialogGraphicsView::updateStep(int step) { + QRectF r = _graphicsProxyWidget->boundingRect(); + _graphicsProxyWidget->setTransform(QTransform() + .translate(r.width() / 2, -_windowTitleBarWidth) + .rotate(step, Qt::XAxis) + //.rotate(step, Qt::YAxis) + //.rotate(step * 5, Qt::ZAxis) + //.scale(1 + 1.5 * step, 1 + 1.5 * step) + .translate(-r.width() / 2, _windowTitleBarWidth)); + //update(); +} + + +/*! + \brief Stops the 3D animation, moves the AboutDialog to the correct place and really shows it. + */ +void AboutDialogGraphicsView::showAboutDialog() { + //hide(); + disconnect(_timeLine, SIGNAL(finished()), this, SLOT(showAboutDialog())); + _aboutDialog->move( int(_parentWindow->geometry().x()+(_parentWindow->geometry().width()-_graphicsProxyWidget->geometry().width()) / 2), _parentWindow->y()+_windowTitleBarWidth-_windowPosOffset ); + _aboutDialog->exec(); +} + + +/*! + \brief Does not directly hide the AboutDialog but instead starts the "fade out" 3D animation. + */ +void AboutDialogGraphicsView::hide() { + _graphicsProxyWidget->setPos( _parentWindow->geometry().x()+(_parentWindow->geometry().width()-_graphicsProxyWidget->geometry().width()) / 2, _parentWindow->y()+_windowTitleBarWidth-_windowPosOffset); + + QRectF r = _graphicsProxyWidget->boundingRect(); + _graphicsProxyWidget->setTransform(QTransform() + .translate(r.width() / 2, -_windowTitleBarWidth) + .rotate(0, Qt::XAxis) + //.rotate(90, Qt::YAxis) + //.rotate(5, Qt::ZAxis) + //.scale(1 + 1.5 * step, 1 + 1.5 * step) + .translate(-r.width() / 2, _windowTitleBarWidth)); + + _graphicsProxyWidget->show(); + //_aboutDialogAsSplashScreen->show(); + QGraphicsView::show(); + + connect(_timeLine, SIGNAL(finished()), this, SLOT(hideReally())); + _timeLine->setDirection(QTimeLine::Backward); + _timeLine->start(); +} + + +/*! + \brief This slot really hides this AboutDialog container. + */ +void AboutDialogGraphicsView::hideReally() { + disconnect(_timeLine, SIGNAL(finished()), this, SLOT(hideReally())); + QGraphicsView::hide(); + _parentWindow->activateWindow(); +} |