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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef IMAGEWIDGET_H
#define IMAGEWIDGET_H
#include <QWidget>
#include <QImage>
#include <QPixmap>
#include <QtGui>
#include "tapandholdgesture.h"
class ImageWidget : public QWidget
{
Q_OBJECT
public:
ImageWidget(QWidget *parent = 0);
void openDirectory(const QString &path);
protected:
void paintEvent(QPaintEvent*);
void resizeEvent(QResizeEvent*);
void timerEvent(QTimerEvent*);
void mousePressEvent(QMouseEvent*);
void mouseDoubleClickEvent(QMouseEvent*);
private slots:
void gestureTriggered();
void gestureFinished();
void gestureCancelled();
private:
void updateImage();
QImage loadImage(const QString &fileName);
void loadImage();
void setZoomedIn(bool zoomed);
void goNextImage();
void goPrevImage();
void goToImage(int index);
QPanGesture *panGesture;
TapAndHoldGesture *tapAndHoldGesture;
QString path;
QStringList files;
int position;
QImage prevImage, nextImage;
QImage currentImage;
QPixmap pixmap;
QTransform transformation;
bool zoomedIn;
int horizontalOffset;
int verticalOffset;
bool zoomed;
qreal zoom;
bool rotated;
qreal angle;
struct TouchFeedback
{
bool tapped;
QPoint position;
bool sliding;
QPoint slidingStartPosition;
QBasicTimer tapTimer;
int tapState;
bool doubleTapped;
int tapAndHoldState;
enum { MaximumNumberOfTouches = 5 };
QPoint touches[MaximumNumberOfTouches];
inline TouchFeedback() { reset(); }
inline void reset()
{
tapped = false;
sliding = false;
tapTimer.stop();
tapState = 0;
doubleTapped = false;
tapAndHoldState = 0;
for (int i = 0; i < MaximumNumberOfTouches; ++i) {
touches[i] = QPoint();
}
}
} touchFeedback;
QBasicTimer feedbackFadeOutTimer;
};
#endif
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