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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef IMAGEWIDGET_H
+#define IMAGEWIDGET_H
+
+#include <QWidget>
+#include <QImage>
+#include <QPixmap>
+
+#include <QtGui>
+
+class ImageWidget : public QWidget
+{
+public:
+ ImageWidget(QWidget *parent = 0);
+
+ void openDirectory(const QString &path);
+
+protected:
+ bool event(QEvent *event);
+ void paintEvent(QPaintEvent*);
+ void gestureEvent(QGestureEvent *event);
+ void resizeEvent(QResizeEvent*);
+ void timerEvent(QTimerEvent*);
+
+private:
+ void updateImage();
+ QImage loadImage(const QString &fileName);
+ void loadImage();
+ void setZoomedIn(bool zoomed);
+ void goNextImage();
+ void goPrevImage();
+ void goToImage(int index);
+
+ 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