qgsrasterhistogramwidget.h

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/***************************************************************************
                         qgsrasterrendererwidget.h
                         ---------------------------
    begin                : July 2012
    copyright            : (C) 2012 by Etienne Tourigny
    email                : etourigny dot dev at gmail dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QGSRASTERHISTOGRAMWIDGET_H
#define QGSRASTERHISTOGRAMWIDGET_H
 
#include "ui_qgsrasterhistogramwidgetbase.h"
#include "qgis_sip.h"
#include "qgis.h"
 
#include "qgsmaplayerconfigwidget.h"
#include "qgis_gui.h"
 
class QgsRasterLayer;
class QgsRasterRendererWidget;
class QwtPlotPicker;
class QwtPlotMarker;
class QwtPlotZoomer;
 
// fix for qwt5/qwt6 QwtDoublePoint vs. QPointF
typedef QPointF QwtDoublePoint SIP_SKIP;
 
class GUI_EXPORT QgsRasterHistogramWidget : public QgsMapLayerConfigWidget, private Ui::QgsRasterHistogramWidgetBase
{
    Q_OBJECT
 
  public:
 
    QgsRasterHistogramWidget( QgsRasterLayer *layer, QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    bool histoSaveAsImage( const QString &filename, int width = 600, int height = 600, int quality = -1 );
 
    void setRendererWidget( const QString &name, QgsRasterRendererWidget *rendererWidget = nullptr );
 
    void setActive( bool activeFlag );
 
    bool computeHistogram( bool forceComputeFlag );
 
    void histoAction( const QString &actionName, bool actionFlag = true );
 
    void setSelectedBand( int index );
 
  public slots:
    void refreshHistogram();
 
    void apply() override;
 
  private slots:
    void mSaveAsImageButton_clicked();
    void cboHistoBand_currentIndexChanged( int );
    void applyHistoMin();
    void applyHistoMax();
    void btnHistoMin_toggled();
    void btnHistoMax_toggled();
    void histoPickerSelected( QPointF );
 
    void histoPickerSelectedQwt5( QwtDoublePoint ) SIP_SKIP;
    void histoActionTriggered( QAction * );
    void updateHistoMarkers();
    void btnHistoCompute_clicked();
 
  private:
 
    enum HistoShowBands
    {
      ShowAll = 0,
      ShowSelected = 1,
      ShowRGB = 2
    };
 
    QgsRasterLayer *mRasterLayer = nullptr;
    QgsRasterRendererWidget *mRendererWidget = nullptr;
    QString mRendererName;
 
    QwtPlotPicker *mHistoPicker = nullptr;
    QwtPlotZoomer *mHistoZoomer = nullptr;
    QwtPlotMarker *mHistoMarkerMin = nullptr;
    QwtPlotMarker *mHistoMarkerMax = nullptr;
    double mHistoMin;
    double mHistoMax;
    QVector<QColor> mHistoColors;
    bool mHistoShowMarkers;
    bool mHistoZoomToMinMax;
    bool mHistoUpdateStyleToMinMax;
    bool mHistoDrawLines;
    /* bool mHistoLoadApplyAll; */
    HistoShowBands mHistoShowBands;
    QList< int > histoSelectedBands();
    QList< int > rendererSelectedBands();
    QPair< QString, QString > rendererMinMax( int bandNo );
};
#endif