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qgsrasterhistogramwidget.h
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1 /***************************************************************************
2  qgsrasterrendererwidget.h
3  ---------------------------
4  begin : July 2012
5  copyright : (C) 2012 by Etienne Tourigny
6  email : etourigny dot dev at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 #ifndef QGSRASTERHISTOGRAMWIDGET_H
18 #define QGSRASTERHISTOGRAMWIDGET_H
19 
20 #include "ui_qgsrasterhistogramwidgetbase.h"
21 
22 class QgsRasterLayer;
23 class QgsRasterRendererWidget;
24 class QwtPlotPicker;
25 class QwtPlotMarker;
26 class QwtPlotZoomer;
27 
28 // fix for qwt5/qwt6 QwtDoublePoint vs. QPointF
29 #if defined(QWT_VERSION) && QWT_VERSION>=0x060000
30 typedef QPointF QwtDoublePoint;
31 #endif
32 
37 class GUI_EXPORT QgsRasterHistogramWidget : public QWidget, private Ui::QgsRasterHistogramWidgetBase
38 {
39  Q_OBJECT
40 
41  public:
42  QgsRasterHistogramWidget( QgsRasterLayer *lyr, QWidget *parent = 0 );
43  ~QgsRasterHistogramWidget();
44 
46  bool histoSaveAsImage( const QString& theFilename, int width = 600, int height = 600, int quality = -1 );
47 
49  void setRendererWidget( const QString& name, QgsRasterRendererWidget* rendererWidget = NULL );
50 
52  void setActive( bool theActiveFlag );
53 
55  bool computeHistogram( bool forceComputeFlag );
56 
58  void histoAction( const QString actionName, bool actionFlag = true );
59 
61  void setSelectedBand( int index );
62 
63  public slots:
65  void refreshHistogram();
67  void on_mSaveAsImageButton_clicked();
68 
69  private slots:
71  void on_cboHistoBand_currentIndexChanged( int );
73  void applyHistoMin( );
74  void applyHistoMax( );
76  void on_btnHistoMin_toggled();
77  void on_btnHistoMax_toggled();
79  void histoPickerSelected( const QPointF & );
83  void histoPickerSelectedQwt5( const QwtDoublePoint & );
85  void histoActionTriggered( QAction* );
87  void updateHistoMarkers();
89  void on_btnHistoCompute_clicked();
90 
91  private:
92 
93  enum HistoShowBands
94  {
95  ShowAll = 0,
96  ShowSelected = 1,
97  ShowRGB = 2
98  };
99 
101  QgsRasterLayer * mRasterLayer;
103  QgsRasterRendererWidget* mRendererWidget;
105  QString mRendererName;
106 
107  QwtPlotPicker* mHistoPicker;
108  QwtPlotZoomer* mHistoZoomer;
109  QwtPlotMarker* mHistoMarkerMin;
110  QwtPlotMarker* mHistoMarkerMax;
111  double mHistoMin;
112  double mHistoMax;
113  QVector<QColor> mHistoColors;
114  bool mHistoShowMarkers;
115  bool mHistoZoomToMinMax;
116  bool mHistoUpdateStyleToMinMax;
117  /* bool mHistoLoadApplyAll; */
118  HistoShowBands mHistoShowBands;
120  QList< int > histoSelectedBands();
122  QList< int > rendererSelectedBands();
123  QPair< QString, QString > rendererMinMax( int theBandNo );
124 };
125 #endif
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