Program Listing for File ratio_layouted_frame.h
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/*
* Copyright (c) 2011, Dirk Thomas, TU Darmstadt
* All rights reserved.
*
* 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 TU Darmstadt 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 HOLDER 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 rqt_image_view__RatioLayoutedFrame_H
#define rqt_image_view__RatioLayoutedFrame_H
#include <QFrame>
#include <QImage>
#include <QLayout>
#include <QLayoutItem>
#include <QMutex>
#include <QPainter>
#include <QRect>
#include <QSize>
namespace rqt_image_view {
class RatioLayoutedFrame
: public QFrame
{
Q_OBJECT
public:
RatioLayoutedFrame(QWidget* parent, Qt::WindowFlags flags = QFlag{0});
virtual ~RatioLayoutedFrame();
const QImage& getImage() const;
QImage getImageCopy() const;
void setImage(const QImage& image);
QRect getAspectRatioCorrectPaintArea();
void resizeToFitAspectRatio();
void setOuterLayout(QHBoxLayout* outer_layout);
void setInnerFrameMinimumSize(const QSize& size);
void setInnerFrameMaximumSize(const QSize& size);
void setInnerFrameFixedSize(const QSize& size);
signals:
void delayed_update();
void mouseLeft(int x, int y);
protected slots:
void onSmoothImageChanged(bool checked);
protected:
void setAspectRatio(unsigned short width, unsigned short height);
void paintEvent(QPaintEvent* event);
private:
static int greatestCommonDivisor(int a, int b);
void mousePressEvent(QMouseEvent * mouseEvent);
QHBoxLayout* outer_layout_;
QSize aspect_ratio_;
QImage qimage_;
mutable QMutex qimage_mutex_;
bool smoothImage_;
};
}
#endif // rqt_image_view__RatioLayoutedFrame_H