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/**************************************************************************
**
** Copyright (C) 2015 Denis Mingulov.
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator
**
** 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 and its Subsidiary(-ies) 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."
**
**************************************************************************/
#ifndef IMAGEVIEW_H
#define IMAGEVIEW_H
#include <QGraphicsView>
namespace ImageViewer {
namespace Internal {
class ImageViewerFile;
class ImageView : public QGraphicsView
{
Q_OBJECT
public:
ImageView(ImageViewerFile *file);
~ImageView();
void reset();
void createScene();
signals:
void scaleFactorChanged(qreal factor);
void imageSizeChanged(const QSize &size);
public slots:
void setViewBackground(bool enable);
void setViewOutline(bool enable);
void zoomIn();
void zoomOut();
void resetToOriginalSize();
void fitToScreen();
private slots:
void emitScaleFactor();
protected:
void drawBackground(QPainter *p, const QRectF &rect);
void hideEvent(QHideEvent *event);
void showEvent(QShowEvent *event);
void wheelEvent(QWheelEvent *event);
private:
void doScale(qreal factor);
ImageViewerFile *m_file;
QGraphicsItem *m_imageItem = 0;
QGraphicsRectItem *m_backgroundItem = 0;
QGraphicsRectItem *m_outlineItem = 0;
bool m_showBackground = false;
bool m_showOutline = true;
};
} // namespace Internal
} // namespace ImageViewer
#endif // IMAGEVIEW_H
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