qgsrastertransparencywidget.h

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/***************************************************************************
    qgsrastertransparencywidget.h
    ---------------------
    begin                : May 2016
    copyright            : (C) 2016 by Nathan Woodrow
    email                : woodrow dot nathan 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 QGSRASTERTRANSPARENCYWIDGET_H
#define QGSRASTERTRANSPARENCYWIDGET_H

#include <QWidget>

#include "ui_qgsrastertransparencywidget.h"

#include "qgsmaplayerconfigwidget.h"

class QgsRasterLayer;
class QgsRasterRenderer;
class QgsMapCanvas;
class QgsMapToolEmitPoint;
class QgsPoint;


class GUI_EXPORT QgsRasterTransparencyWidget : public QgsMapLayerConfigWidget, private Ui::QgsRasterTransparencyWidget
{
    Q_OBJECT
  public:
    QgsRasterTransparencyWidget( QgsRasterLayer* layer, QgsMapCanvas *canvas, QWidget *parent = 0 );
    ~QgsRasterTransparencyWidget();

  public slots:
    void syncToLayer();

    void apply();

  private slots:

    void pixelSelected( const QgsPoint& canvasPoint );

    void transparencyCellTextEdited( const QString & text );

    void sliderTransparency_valueChanged( int theValue );

    void on_pbnAddValuesFromDisplay_clicked();

    void on_pbnAddValuesManually_clicked();

    void on_pbnDefaultValues_clicked();

    void on_pbnExportTransparentPixelValues_clicked();

    void on_pbnImportTransparentPixelValues_clicked();
    void on_pbnRemoveSelectedRow_clicked();

  private:
    const QString TRSTRING_NOT_SET;

    bool rasterIsMultiBandColor();

    void populateTransparencyTable( QgsRasterRenderer* renderer );

    void setupTransparencyTable( int nBands );

    void setTransparencyCell( int row, int column, double value );

    void adjustTransparencyCellWidth( int row, int column );

    void setTransparencyToEdited( int row );

    double transparencyCellValue( int row, int column );

    QgsRasterLayer* mRasterLayer;

    QgsMapCanvas* mMapCanvas;

    QgsMapToolEmitPoint* mPixelSelectorTool;

    QVector<bool> mTransparencyToEdited;
};
#endif // QGSRASTERTRANSPARENCYWIDGET_H