/****************************************************************************+
−
**+
−
** 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 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"+
−