qgsmultibandcolorrendererwidget.h

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/***************************************************************************
                         qgsmultibandcolorrendererwidget.h
                         ---------------------------------
    begin                : February 2012
    copyright            : (C) 2012 by Marco Hugentobler
    email                : marco at sourcepole dot ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSMULTIBANDCOLORRENDERERWIDGET_H
#define QGSMULTIBANDCOLORRENDERERWIDGET_H
 
#include "qgsrasterrendererwidget.h"
#include "ui_qgsmultibandcolorrendererwidgetbase.h"
#include "qgis_gui.h"
 
class QgsContrastEnhancement;
class QgsMultiBandColorRenderer;
class QgsRasterDataProvider;
class QgsRasterLayer;
class QLineEdit;
class QgsRasterMinMaxWidget;
 
class GUI_EXPORT QgsMultiBandColorRendererWidget: public QgsRasterRendererWidget, private Ui::QgsMultiBandColorRendererWidgetBase
{
    Q_OBJECT
 
  public:
    QgsMultiBandColorRendererWidget( QgsRasterLayer *layer, const QgsRectangle &extent = QgsRectangle() );
    static QgsRasterRendererWidget *create( QgsRasterLayer *layer, const QgsRectangle &extent ) { return new QgsMultiBandColorRendererWidget( layer, extent ); }
 
    QgsRasterRenderer *renderer() override SIP_FACTORY;
    void setMapCanvas( QgsMapCanvas *canvas ) override;
 
    void setFromRenderer( const QgsRasterRenderer *r );
 
    QString min( int index = 0 ) override;
    QString max( int index = 0 ) override;
    void setMin( const QString &value, int index = 0 ) override;
    void setMax( const QString &value, int index = 0 ) override;
    int selectedBand( int index = 0 ) override;
 
    QgsContrastEnhancement::ContrastEnhancementAlgorithm contrastEnhancementAlgorithm() const override;
    void setContrastEnhancementAlgorithm( QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm ) override;
 
    void doComputations() override;
    QgsRasterMinMaxWidget *minMaxWidget() override { return mMinMaxWidget; }
 
  public slots:
    void loadMinMax( int bandNo, double min, double max );
 
  private slots:
    void onBandChanged( int );
    void mRedMinLineEdit_textChanged( const QString & );
    void mRedMaxLineEdit_textChanged( const QString & );
    void mGreenMinLineEdit_textChanged( const QString & );
    void mGreenMaxLineEdit_textChanged( const QString & );
    void mBlueMinLineEdit_textChanged( const QString & );
    void mBlueMaxLineEdit_textChanged( const QString & );
 
  private:
    void createValidators();
    void setCustomMinMaxValues( QgsMultiBandColorRenderer *r, const QgsRasterDataProvider *provider, int redBand, int GreenBand,
                                int blueBand );
    void setMinMaxValue( const QgsContrastEnhancement *ce, QLineEdit *minEdit, QLineEdit *maxEdit );
    QgsRasterMinMaxWidget *mMinMaxWidget = nullptr;
    bool mDisableMinMaxWidgetRefresh;
 
    void minMaxModified();
};
 
#endif // QGSMULTIBANDCOLORRENDERERWIDGET_H