qgssymbolslistwidget.h

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/***************************************************************************
 qgssymbolslistwidget.h
 ---------------------
 begin                : June 2012
 copyright            : (C) 2012 by Arunmozhi
 email                : aruntheguy at gmail.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 QGSSYMBOLSLISTWIDGET_H
#define QGSSYMBOLSLISTWIDGET_H

#include "ui_widget_symbolslist.h"

#include "qgssymbolwidgetcontext.h"
#include "qgssymbollayer.h"
#include "qgsstylemodel.h"
#include <QWidget>
#include "qgis_gui.h"

class QgsSymbol;
class QgsStyle;

class QMenu;

#ifndef SIP_RUN
class QgsReadOnlyStyleModel : public QgsStyleProxyModel
{
    Q_OBJECT
  public:

    explicit QgsReadOnlyStyleModel( QgsStyle *style, QObject *parent = nullptr );
    Qt::ItemFlags flags( const QModelIndex &index ) const override;
    QVariant data( const QModelIndex &index, int role ) const override;

};
#endif

class GUI_EXPORT QgsSymbolsListWidget : public QWidget, private Ui::SymbolsListWidget, private QgsExpressionContextGenerator
{
    Q_OBJECT

  public:

    QgsSymbolsListWidget( QgsSymbol *symbol, QgsStyle *style, QMenu *menu, QWidget *parent SIP_TRANSFERTHIS, QgsVectorLayer *layer = nullptr );


    ~QgsSymbolsListWidget() override;

    void setContext( const QgsSymbolWidgetContext &context );

    QgsSymbolWidgetContext context() const;

    const QgsVectorLayer *layer() const { return mLayer; }

  public slots:

    void setSymbolFromStyle( const QModelIndex &index );
    void setSymbolColor( const QColor &color );
    void setMarkerAngle( double angle );
    void setMarkerSize( double size );
    void setLineWidth( double width );
    void addSymbolToStyle();
    void saveSymbol();

    void populateGroups();

    void openStyleManager();
    void clipFeaturesToggled( bool checked );

    void updateDataDefinedMarkerSize();
    void updateDataDefinedMarkerAngle();
    void updateDataDefinedLineWidth();

  signals:
    void changed();

  private slots:
    void mSymbolUnitWidget_changed();
    void groupsCombo_currentIndexChanged( int index );
    void updateAssistantSymbol();
    void opacityChanged( double value );
    void createAuxiliaryField();
    void updateModelFilters();
    void forceRHRToggled( bool checked );

  private:
    QgsSymbol *mSymbol = nullptr;
    std::shared_ptr< QgsSymbol > mAssistantSymbol;
    QgsStyle *mStyle = nullptr;
    QMenu *mAdvancedMenu = nullptr;
    QAction *mClipFeaturesAction = nullptr;
    QAction *mStandardizeRingsAction = nullptr;
    QgsVectorLayer *mLayer = nullptr;
    QgsMapCanvas *mMapCanvas = nullptr;
    QgsStyleProxyModel *mModel = nullptr;
    bool mUpdatingGroups = false;

    void updateSymbolColor();
    void updateSymbolInfo();
    QgsSymbolWidgetContext mContext;

    QgsExpressionContext createExpressionContext() const override;
    void registerDataDefinedButton( QgsPropertyOverrideButton *button, QgsSymbolLayer::Property key );
};

#endif //QGSSYMBOLSLISTWIDGET_H