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"
#include "qgis_gui.h"

class QgsRasterLayer;
class QgsRasterRenderer;
class QgsMapCanvas;
class QgsMapToolEmitPoint;
class QgsPointXY;


class GUI_EXPORT QgsRasterTransparencyWidget : public QgsMapLayerConfigWidget, private Ui::QgsRasterTransparencyWidget
{
    Q_OBJECT
  public:

    QgsRasterTransparencyWidget( QgsRasterLayer *layer, QgsMapCanvas *canvas, QWidget *parent = nullptr );

  public slots:

    void syncToLayer();

    void apply() override;

  private slots:

    void pixelSelected( const QgsPointXY &canvasPoint );

    void transparencyCellTextEdited( const QString &text );

    void pbnAddValuesFromDisplay_clicked();

    void pbnAddValuesManually_clicked();

    void pbnDefaultValues_clicked();

    void pbnExportTransparentPixelValues_clicked();

    void pbnImportTransparentPixelValues_clicked();
    void 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 = nullptr;

    QgsMapCanvas *mMapCanvas = nullptr;

    QgsMapToolEmitPoint *mPixelSelectorTool = nullptr;

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