qgsrasterminmaxwidget.h

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/***************************************************************************
                         qgsrasterminmaxwidget.h
                         ---------------------------------
    begin                : July 2012
    copyright            : (C) 2012 by Radim Blazek
    email                : radim dot blazek 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 QGSRASTERMINMAXWIDGET_H
#define QGSRASTERMINMAXWIDGET_H
 
#include "ui_qgsrasterminmaxwidgetbase.h"
 
#include "qgis.h"
#include "qgis_gui.h"
#include "qgscontrastenhancement.h"
#include "qgsraster.h"
#include "qgsrasterminmaxorigin.h"
#include "qgsrectangle.h"
 
class QgsMapCanvas;
class QgsRasterLayer;

class GUI_EXPORT QgsRasterMinMaxWidget : public QWidget, private Ui::QgsRasterMinMaxWidgetBase
{
    Q_OBJECT
  public:
    QgsRasterMinMaxWidget( QgsRasterLayer *layer, QWidget *parent SIP_TRANSFERTHIS = nullptr );

    void setExtent( const QgsRectangle &extent ) { mExtent = extent; }

    void setMapCanvas( QgsMapCanvas *canvas );

    QgsMapCanvas *mapCanvas();
 
    void setBands( const QList<int> &bands );

    QgsRectangle extent();

    int sampleSize() { return cboAccuracy->currentIndex() == 0 ? 250000 : 0; }

    void setFromMinMaxOrigin( const QgsRasterMinMaxOrigin & );

    QgsRasterMinMaxOrigin minMaxOrigin();

    void hideUpdatedExtent();

    void doComputations();

    void userHasSetManualMinMaxValues();

    bool isCollapsed() const { return mLoadMinMaxValuesGroupBox->isCollapsed(); }

    void setCollapsed( bool b ) { mLoadMinMaxValuesGroupBox->setCollapsed( b ); }
 
  signals:

    void widgetChanged();

    void load( int bandNo, double min, double max );
 
  private slots:
 
    void mUserDefinedRadioButton_toggled( bool );
    void mMinMaxRadioButton_toggled( bool b )
    {
      if ( b )
      {
        onWidgetChanged();
      }
    }
    void mStdDevRadioButton_toggled( bool b )
    {
      if ( b )
      {
        onWidgetChanged();
      }
    }
    void mCumulativeCutRadioButton_toggled( bool b )
    {
      if ( b )
      {
        onWidgetChanged();
      }
    }
    void mStatisticsExtentCombo_currentIndexChanged( int ) { onWidgetChanged(); }
    void mCumulativeCutLowerDoubleSpinBox_valueChanged( double ) { onWidgetChanged(); }
    void mCumulativeCutUpperDoubleSpinBox_valueChanged( double ) { onWidgetChanged(); }
    void mStdDevSpinBox_valueChanged( double ) { onWidgetChanged(); }
    void cboAccuracy_currentIndexChanged( int ) { onWidgetChanged(); }
    void onWidgetChanged();
 
  private:
    QgsRasterLayer *mLayer = nullptr;
    QList<int> mBands;
    QgsRectangle mExtent;
 
    QgsMapCanvas *mCanvas = nullptr;
 
    bool mLastRectangleValid = false;
    QgsRectangle mLastRectangle;
    QgsRasterMinMaxOrigin mLastMinMaxOrigin;
 
    bool mBandsChanged = false;
};
 
#endif // QGSRASTERMINMAXWIDGET_H