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+/****************************************************************************
+**
+** Copyright (C) 2011 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 delta = pan->delta();
+ QScrollBar *vbar = verticalScrollBar();
+ QScrollBar *hbar = horizontalScrollBar();
+ vbar->setValue(vbar->value() - delta.y());
+ hbar->setValue(hbar->value() - delta.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)QGestureRecognizer::registerRecognizer(new MousePanGestureRecognizer);
+ ThreeFingerSlideGesture::Type = QGestureRecognizer::registerRecognizer(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"