qgsvectorlayerlegendwidget.h

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/***************************************************************************
  qgsvectorlayerlegendwidget.h
  ---------------------
  Date                 : April 2018
  Copyright            : (C) 2018 by Martin Dobias
  Email                : wonder dot sk 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 QGSVECTORLAYERLEGENDWIDGET_H
#define QGSVECTORLAYERLEGENDWIDGET_H
 
// We don't want to expose this in the public API
#define SIP_NO_FILE
 
#include "qgis_gui.h"
#include "qgstextformat.h"
 
#include <QWidget>
 
class QgsImageSourceLineEdit;
class QLabel;
class QPushButton;
class QTreeView;
class QTreeWidget;
class QTreeWidgetItem;
class QCheckBox;
 
class QgsFontButton;
class QgsCollapsibleGroupBox;
class QgsMapCanvas;
class QgsVectorLayer;

class GUI_EXPORT QgsVectorLayerLegendWidget : public QWidget
{
    Q_OBJECT
  public:
    explicit QgsVectorLayerLegendWidget( QWidget *parent = nullptr );

    void setMapCanvas( QgsMapCanvas *canvas );

    QgsMapCanvas *mapCanvas() const { return mCanvas; }

    void setLayer( QgsVectorLayer *layer );

    void applyToLayer();
 
  private slots:
    void labelsFromExpression();
    void labelLegendTreeWidgetItemDoubleClicked( QTreeWidgetItem *item, int column );
 
  private:
    void populateLegendTreeView( const QHash<QString, QString> &content );
    void populateLabelLegendTreeWidget();
    void applyLabelLegend();
 
  private:
    QCheckBox *mIncludeByDefaultInLayoutLegendsCheck = nullptr;
    QTreeView *mLegendTreeView = nullptr;
    QgsFontButton *mTextOnSymbolFormatButton = nullptr;
    QPushButton *mTextOnSymbolFromExpressionButton = nullptr;
    QgsCollapsibleGroupBox *mTextOnSymbolGroupBox = nullptr;
    QgsCollapsibleGroupBox *mLabelLegendGroupBox = nullptr;
    QTreeWidget *mLabelLegendTreeWidget = nullptr;
    QLabel *mPlaceholderImageLabel = nullptr;
    QgsImageSourceLineEdit *mImageSourceLineEdit = nullptr;
 
    QgsMapCanvas *mCanvas = nullptr;
    QgsVectorLayer *mLayer = nullptr;
};
 
#endif // QGSVECTORLAYERLEGENDWIDGET_H