29c99bddbf
Task-number: QTBUG-84469 Change-Id: Id14119168bb1bf11f99bda7ef6ee9cf51bcfab2e Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef IMAGEWIDGET_H
|
|
#define IMAGEWIDGET_H
|
|
|
|
#include <QImage>
|
|
#include <QLoggingCategory>
|
|
#include <QWidget>
|
|
|
|
QT_BEGIN_NAMESPACE
|
|
class QGestureEvent;
|
|
class QPanGesture;
|
|
class QPinchGesture;
|
|
class QSwipeGesture;
|
|
QT_END_NAMESPACE
|
|
|
|
Q_DECLARE_LOGGING_CATEGORY(lcExample)
|
|
|
|
//! [class definition begin]
|
|
class ImageWidget : public QWidget
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
ImageWidget(QWidget *parent = nullptr);
|
|
void openDirectory(const QString &path);
|
|
void grabGestures(const QList<Qt::GestureType> &gestures);
|
|
|
|
protected:
|
|
bool event(QEvent *event) override;
|
|
void paintEvent(QPaintEvent *event) override;
|
|
void resizeEvent(QResizeEvent *event) override;
|
|
void mouseDoubleClickEvent(QMouseEvent *event) override;
|
|
|
|
private:
|
|
bool gestureEvent(QGestureEvent *event);
|
|
void panTriggered(QPanGesture*);
|
|
void pinchTriggered(QPinchGesture*);
|
|
void swipeTriggered(QSwipeGesture*);
|
|
//! [class definition begin]
|
|
|
|
QImage loadImage(const QString &fileName) const;
|
|
void loadImage();
|
|
void goNextImage();
|
|
void goPrevImage();
|
|
void goToImage(int index);
|
|
|
|
QString path;
|
|
QStringList files;
|
|
int position;
|
|
|
|
QImage prevImage, nextImage;
|
|
QImage currentImage;
|
|
|
|
qreal horizontalOffset;
|
|
qreal verticalOffset;
|
|
qreal rotationAngle;
|
|
qreal scaleFactor;
|
|
qreal currentStepScaleFactor;
|
|
//! [class definition end]
|
|
};
|
|
//! [class definition end]
|
|
|
|
#endif
|