qgssinglebandgrayrendererwidget.h

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/***************************************************************************
                         qgssinglebandgrayrendererwidget.h
                         ---------------------------------
    begin                : March 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 QGSSINGLEBANDGRAYRENDERERWIDGET_H
#define QGSSINGLEBANDGRAYRENDERERWIDGET_H
 
#include "qgsrasterrendererwidget.h"
#include "qgis_sip.h"
#include "ui_qgssinglebandgrayrendererwidgetbase.h"
#include "qgis_gui.h"
#include "qgscolorramplegendnodesettings.h"
 
class QgsRasterMinMaxWidget;
 
class GUI_EXPORT QgsSingleBandGrayRendererWidget : public QgsRasterRendererWidget, private Ui::QgsSingleBandGrayRendererWidgetBase
{
    Q_OBJECT
  public:
    QgsSingleBandGrayRendererWidget( QgsRasterLayer *layer, const QgsRectangle &extent = QgsRectangle() );
 
    static QgsRasterRendererWidget *create( QgsRasterLayer *layer, const QgsRectangle &extent ) SIP_FACTORY { return new QgsSingleBandGrayRendererWidget( layer, extent ); }
 
    QgsRasterRenderer *renderer() SIP_FACTORY override;
    void setMapCanvas( QgsMapCanvas *canvas ) override;
 
    void setFromRenderer( const QgsRasterRenderer *r );
 
    QString min( int index = 0 ) override
    {
      Q_UNUSED( index )
      return mMinLineEdit->text();
    }
    QString max( int index = 0 ) override
    {
      Q_UNUSED( index )
      return mMaxLineEdit->text();
    }
    void setMin( const QString &value, int index = 0 ) override;
    void setMax( const QString &value, int index = 0 ) override;
    int selectedBand( int index = 0 ) override
    {
      Q_UNUSED( index )
      return mGrayBandComboBox->currentBand();
    }
 
    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 bandChanged();
    void mMinLineEdit_textChanged( const QString & );
    void mMaxLineEdit_textChanged( const QString & );
    void showLegendSettings();
 
  private:
    QgsRasterMinMaxWidget *mMinMaxWidget = nullptr;
    bool mDisableMinMaxWidgetRefresh;
    QgsColorRampLegendNodeSettings mLegendSettings;
 
    void minMaxModified();
};
 
#endif // QGSSINGLEBANDGRAYRENDERERWIDGET_H