view.h

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  *
   3  * $Id$
   4  *
   5  * The MIT License
   6  *
   7  * Copyright (c) 2008 BBC Research
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25  * THE SOFTWARE.
  26  *
  27  * ***** END LICENSE BLOCK ***** */
  28
  29 #ifndef VIEW_H
  30 #define VIEW_H
  31
  32 #include "rawFrame.h"
  33 #include "colourSpace.h"
  34 #include "sequenceReader.h"
  35
  36 #include <QGraphicsView>
  37
  38 class QGraphicsScene;
  39
  40 class View : public QGraphicsView
  41 {
  42         Q_OBJECT
  43 public:
  44         View(QWidget *parent = 0);
  45
  46         enum ProcessType {processResample=0, processColour, processDisplay, processScene};
  47
  48
  49         enum YUVdisplayMode {
  50                 YUVdisplayColour,
  51                 YUVdisplayYOnly,
  52                 YUVdisplayPlanar
  53         };
  54
  55         float getZoom(void);
  56         int getRotation(void);
  57
  58 signals:
  59         void pixelInfoMessage(const QString &, int);
  60         void zoomChanged(float);
  61
  62 public slots:
  63         void setZoom(float);
  64         void setYUVRGBScaling(bool scaled);
  65         void setYUVColourMatrix(ColourSpace::MatrixType);
  66         void setYUVdisplayMode(YUVdisplayMode);
  67         void setYUVbitDepth(int);                    //the bit depth from the gui menu
  68         void setYUVnativeBitDepth(int);              //the bit depth of the original file, or 0 if unknown
  69
  70 private slots:
  71         void setupMatrix();
  72         void showFrame(const RawFrame*);
  73
  74 private:
  75         void invalidateFrame();
  76         void processImage(const ProcessType type);
  77
  78         //deal with mouse interaction
  79         void wheelEvent(QWheelEvent* wheelEvent);
  80         void mouseDoubleClickEvent(QMouseEvent * e);
  81
  82         float zoom;
  83         int rotation;
  84
  85         //QGraphicsView *graphicsView;
  86         QGraphicsScene *scene;
  87
  88         //information for displaying a YUV image from a headerless file
  89         int yuvImageBitDepth;
  90         int yuvImageNativeBitDepth;
  91         bool yuvImageRGBScaling;
  92         ColourSpace::MatrixType yuvImageColourMatrix;
  93         RawFrame::Chroma inChroma;
  94         SequenceReader::RawType yuvFormat;
  95
  96         //stores for loading, resampling and colour converting the input
  97         RawFrame *inFrame;
  98         RawFrame *frame444;
  99         RawFrame *frameRGB;
 100
 101         //settings that change the appearance of the image
 102         YUVdisplayMode yuvDisplayMode;
 103 };
 104
 105 #endif