ratio_layouted_frame.h
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00001 /*
00002  * Copyright (c) 2011, Dirk Thomas, TU Darmstadt
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  *   * Redistributions of source code must retain the above copyright
00010  *     notice, this list of conditions and the following disclaimer.
00011  *   * Redistributions in binary form must reproduce the above
00012  *     copyright notice, this list of conditions and the following
00013  *     disclaimer in the documentation and/or other materials provided
00014  *     with the distribution.
00015  *   * Neither the name of the TU Darmstadt nor the names of its
00016  *     contributors may be used to endorse or promote products derived
00017  *     from this software without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00022  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
00023  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00024  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00025  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00026  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00027  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00028  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
00029  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00030  * POSSIBILITY OF SUCH DAMAGE.
00031  */
00032 
00033 #ifndef rqt_image_view__RatioLayoutedFrame_H
00034 #define rqt_image_view__RatioLayoutedFrame_H
00035 
00036 #include <QFrame>
00037 #include <QImage>
00038 #include <QLayout>
00039 #include <QLayoutItem>
00040 #include <QMutex>
00041 #include <QPainter>
00042 #include <QRect>
00043 #include <QSize>
00044 
00045 namespace rqt_image_view {
00046 
00051 class RatioLayoutedFrame
00052   : public QFrame
00053 {
00054 
00055   Q_OBJECT
00056 
00057 public:
00058 
00059   RatioLayoutedFrame(QWidget* parent, Qt::WFlags flags = 0);
00060 
00061   virtual ~RatioLayoutedFrame();
00062 
00063   const QImage& getImage() const;
00064 
00065   QImage getImageCopy() const;
00066 
00067   void setImage(const QImage& image);
00068 
00069   QRect getAspectRatioCorrectPaintArea();
00070 
00071   void resizeToFitAspectRatio();
00072 
00073   void setInnerFrameMinimumSize(const QSize& size);
00074 
00075   void setInnerFrameMaximumSize(const QSize& size);
00076 
00077   void setInnerFrameFixedSize(const QSize& size);
00078 
00079 signals:
00080 
00081   void delayed_update();
00082 
00083 protected:
00084 
00085   void setAspectRatio(unsigned short width, unsigned short height);
00086 
00087   void paintEvent(QPaintEvent* event);
00088 
00089 private:
00090 
00091   static int greatestCommonDivisor(int a, int b);
00092 
00093   QSize aspect_ratio_;
00094 
00095   QImage qimage_;
00096   mutable QMutex qimage_mutex_;
00097 
00098 };
00099 
00100 }
00101 
00102 #endif // rqt_image_view__RatioLayoutedFrame_H


rqt_image_view
Author(s): Dirk Thomas
autogenerated on Wed Sep 16 2015 06:57:52