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authorJason Barron <jbarron@trolltech.com>2009-08-18 06:34:18 (GMT)
committerJason Barron <jbarron@trolltech.com>2009-08-18 06:34:18 (GMT)
commitfd6740b6ade6e7f8e51a9cc558b723e7fae15ccf (patch)
treeaa2ba4ce64d047d73c29ab0616e8a89d352c3abd /doc/src/snippets/gestures/imageviewer/imagewidget.h
parentd24029e3d4639f1300e7a68858936911df969f69 (diff)
parent572e165dcb8cc8fcdfaa4ab9bdab050f6a6cc173 (diff)
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Merge commit 'qt/master'
Conflicts: doc/src/examples.qdoc doc/src/plugins-howto.qdoc doc/src/topics.qdoc examples/phonon/musicplayer/mainwindow.cpp src/3rdparty/freetype/src/base/ftobjs.c src/corelib/global/qglobal.h src/corelib/tools/qalgorithms.h src/corelib/tools/qshareddata.cpp src/corelib/tools/qsharedpointer.cpp src/corelib/tools/tools.pri src/corelib/xml/qxmlstream.h src/gui/painting/painting.pri src/gui/widgets/qdatetimeedit.cpp tests/auto/qdesktopservices/qdesktopservices.pro tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp tests/auto/qtextcodec/test/test.pro
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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://qt.nokia.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*);
+
+//! [imagewidget-slots]
+private slots:
+ void gestureTriggered();
+ void gestureFinished();
+ void gestureCancelled();
+//! [imagewidget-slots]
+
+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