QGIS API Documentation  3.21.0-Master (5b68dc587e)
qgsrasterminmaxwidget.h
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1 /***************************************************************************
2  qgsrasterminmaxwidget.h
3  ---------------------------------
4  begin : July 2012
5  copyright : (C) 2012 by Radim Blazek
6  email : radim dot blazek 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 
18 #ifndef QGSRASTERMINMAXWIDGET_H
19 #define QGSRASTERMINMAXWIDGET_H
20 
21 #include "ui_qgsrasterminmaxwidgetbase.h"
22 #include "qgis.h"
23 #include "qgsrectangle.h"
24 
25 #include "qgsraster.h"
26 #include "qgsrasterminmaxorigin.h"
27 #include "qgscontrastenhancement.h"
28 #include "qgis_gui.h"
29 
30 class QgsMapCanvas;
31 class QgsRasterLayer;
32 
37 class GUI_EXPORT QgsRasterMinMaxWidget: public QWidget, private Ui::QgsRasterMinMaxWidgetBase
38 {
39  Q_OBJECT
40  public:
41 
43  QgsRasterMinMaxWidget( QgsRasterLayer *layer, QWidget *parent SIP_TRANSFERTHIS = nullptr );
44 
51  void setExtent( const QgsRectangle &extent ) { mExtent = extent; }
52 
61  void setMapCanvas( QgsMapCanvas *canvas );
62 
68  QgsMapCanvas *mapCanvas();
69 
70  void setBands( const QList<int> &bands );
71 
76  QgsRectangle extent();
77 
79  int sampleSize() { return cboAccuracy->currentIndex() == 0 ? 250000 : 0; }
80 
82  void setFromMinMaxOrigin( const QgsRasterMinMaxOrigin & );
83 
85  QgsRasterMinMaxOrigin minMaxOrigin();
86 
88  void hideUpdatedExtent();
89 
91  void doComputations();
92 
94  void userHasSetManualMinMaxValues();
95 
97  bool isCollapsed() const { return mLoadMinMaxValuesGroupBox->isCollapsed(); }
98 
100  void setCollapsed( bool b ) { mLoadMinMaxValuesGroupBox->setCollapsed( b ); }
101 
102  signals:
103 
109 
111  void load( int bandNo, double min, double max );
112 
113  private slots:
114 
115  void mUserDefinedRadioButton_toggled( bool );
116  void mMinMaxRadioButton_toggled( bool b ) { if ( b ) emit widgetChanged(); }
117  void mStdDevRadioButton_toggled( bool b ) { if ( b ) emit widgetChanged(); }
118  void mCumulativeCutRadioButton_toggled( bool b ) { if ( b ) emit widgetChanged(); }
119  void mStatisticsExtentCombo_currentIndexChanged( int ) { emit widgetChanged(); }
120  void mCumulativeCutLowerDoubleSpinBox_valueChanged( double ) { emit widgetChanged(); }
121  void mCumulativeCutUpperDoubleSpinBox_valueChanged( double ) { emit widgetChanged(); }
122  void mStdDevSpinBox_valueChanged( double ) { emit widgetChanged(); }
123  void cboAccuracy_currentIndexChanged( int ) { emit widgetChanged(); }
124 
125  private:
126  QgsRasterLayer *mLayer = nullptr;
127  QList<int> mBands;
128  QgsRectangle mExtent;
129 
130  QgsMapCanvas *mCanvas = nullptr;
131 
132  bool mLastRectangleValid;
133  QgsRectangle mLastRectangle;
134  QgsRasterMinMaxOrigin mLastMinMaxOrigin;
135 
136  bool mBandsChanged;
137 };
138 
139 #endif // QGSRASTERMINMAXWIDGET_H
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:88
Represents a raster layer.
This class describes the origin of min/max values.
void setExtent(const QgsRectangle &extent)
Sets the extent to use for minimum and maximum value calculation.
void setCollapsed(bool b)
Sets collapsed state of widget.
void load(int bandNo, double min, double max)
signal emitted when new min/max values are computed from statistics.
bool isCollapsed() const
Returns if the widget is collaped.
int sampleSize()
Returns the selected sample size.
void widgetChanged()
Emitted when something on the widget has changed.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53