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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include "imageitem.h"
#include "gestures.h"
#include "mousepangesturerecognizer.h"
class GraphicsView : public QGraphicsView
{
public:
GraphicsView(QGraphicsScene *scene, QWidget *parent = 0)
: QGraphicsView(scene, parent)
{
}
protected:
bool viewportEvent(QEvent *event)
{
if (event->type() == QEvent::Gesture) {
QGestureEvent *ge = static_cast<QGestureEvent *>(event);
if (QPanGesture *pan = static_cast<QPanGesture *>(ge->gesture(Qt::PanGesture))) {
switch (pan->state()) {
case Qt::GestureStarted: qDebug("view: Pan: started"); break;
case Qt::GestureFinished: qDebug("view: Pan: finished"); break;
case Qt::GestureCanceled: qDebug("view: Pan: canceled"); break;
case Qt::GestureUpdated: break;
default: qDebug("view: Pan: <unknown state>"); break;
}
const QPointF offset = pan->offset();
QScrollBar *vbar = verticalScrollBar();
QScrollBar *hbar = horizontalScrollBar();
vbar->setValue(vbar->value() - offset.y());
hbar->setValue(hbar->value() - offset.x());
ge->accept(pan);
return true;
}
}
return QGraphicsView::viewportEvent(event);
}
};
class StandardGestures : public QWidget
{
public:
StandardGestures(QWidget *parent = 0)
: QWidget(parent)
{
scene = new QGraphicsScene(this);
scene->setSceneRect(-2000, -2000, 4000, 4000);
view = new QGraphicsView(scene, 0);
QVBoxLayout *l = new QVBoxLayout(this);
l->addWidget(view);
}
QGraphicsScene *scene;
QGraphicsView *view;
};
class GlobalViewGestures : public QWidget
{
Q_OBJECT
public:
GlobalViewGestures(QWidget *parent = 0)
: QWidget(parent)
{
scene = new QGraphicsScene(this);
scene->setSceneRect(-2000, -2000, 4000, 4000);
view = new GraphicsView(scene, 0);
view->viewport()->grabGesture(Qt::PanGesture);
view->viewport()->grabGesture(ThreeFingerSlideGesture::Type);
QVBoxLayout *l = new QVBoxLayout(this);
l->addWidget(view);
}
QGraphicsScene *scene;
QGraphicsView *view;
};
class GraphicsItemGestures : public QWidget
{
Q_OBJECT
public:
GraphicsItemGestures(QWidget *parent = 0)
: QWidget(parent)
{
scene = new QGraphicsScene(this);
scene->setSceneRect(-2000, -2000, 4000, 4000);
view = new QGraphicsView(scene, 0);
view->viewport()->grabGesture(Qt::PanGesture);
view->viewport()->grabGesture(ThreeFingerSlideGesture::Type);
QVBoxLayout *l = new QVBoxLayout(this);
l->addWidget(view);
}
QGraphicsScene *scene;
QGraphicsView *view;
};
class MainWindow : public QMainWindow
{
public:
MainWindow();
void setDirectory(const QString &path);
private:
QTabWidget *tabWidget;
StandardGestures *standardGestures;
GlobalViewGestures *globalViewGestures;
GraphicsItemGestures *graphicsItemGestures;
};
MainWindow::MainWindow()
{
(void)qApp->registerGestureRecognizer(new MousePanGestureRecognizer);
ThreeFingerSlideGesture::Type = qApp->registerGestureRecognizer(new ThreeFingerSlideGestureRecognizer);
tabWidget = new QTabWidget;
standardGestures = new StandardGestures;
tabWidget->addTab(standardGestures, "Standard gestures");
globalViewGestures = new GlobalViewGestures;
tabWidget->addTab(globalViewGestures , "Global gestures");
graphicsItemGestures = new GraphicsItemGestures;
tabWidget->addTab(graphicsItemGestures, "Graphics item gestures");
setCentralWidget(tabWidget);
}
void MainWindow::setDirectory(const QString &path)
{
QDir dir(path);
QStringList files = dir.entryList(QDir::Files | QDir::Readable | QDir::NoDotAndDotDot);
foreach(const QString &file, files) {
QImageReader img(path + QLatin1String("/")+file);
QImage image = img.read();
if (!image.isNull()) {
{
ImageItem *item = new ImageItem(image);
item->setPos(0, 0);
item->setFlags(QGraphicsItem::ItemIsMovable);
standardGestures->scene->addItem(item);
}
{
ImageItem *item = new ImageItem(image);
item->setPos(0, 0);
item->setFlags(QGraphicsItem::ItemIsMovable);
globalViewGestures->scene->addItem(item);
}
{
GestureImageItem *item = new GestureImageItem(image);
item->setPos(0, 0);
item->setFlags(QGraphicsItem::ItemIsMovable);
graphicsItemGestures->scene->addItem(item);
}
}
}
{
QList<QGraphicsItem*> items = standardGestures->scene->items();
if (!items.isEmpty())
standardGestures->view->ensureVisible(items.at(0));
}
{
QList<QGraphicsItem*> items = globalViewGestures->scene->items();
if (!items.isEmpty())
globalViewGestures->view->ensureVisible(items.at(0));
}
{
QList<QGraphicsItem*> items = graphicsItemGestures->scene->items();
if (!items.isEmpty())
graphicsItemGestures->view->ensureVisible(items.at(0));
}
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
MainWindow window;
if (QApplication::arguments().size() > 1)
window.setDirectory(QApplication::arguments().at(1));
else
window.setDirectory(QFileDialog::getExistingDirectory(0, "Select image folder"));
window.show();
return app.exec();
}
#include "main.moc"
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