qgsrendererwidget.h

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/***************************************************************************
    qgsrendererwidget.h
    ---------------------
    begin                : November 2009
    copyright            : (C) 2009 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 QGSRENDERERWIDGET_H
#define QGSRENDERERWIDGET_H
 
#include "qgsexpressioncontextgenerator.h"
#include "qgspanelwidget.h"
#include "qgsrenderer.h"
#include "qgssymbolwidgetcontext.h"
 
#include <QMenu>
#include <QStackedWidget>
#include <QWidget>
 
class QgsDataDefinedSizeLegend;
class QgsDataDefinedSizeLegendWidget;
class QgsVectorLayer;
class QgsStyle;
class QgsMapCanvas;
class QgsMarkerSymbol;
class QgsLegendSymbolItem;
class QgsPropertyOverrideButton;

class GUI_EXPORT QgsRendererWidget : public QgsPanelWidget, public QgsExpressionContextGenerator
{
    Q_OBJECT
  public:
    QgsRendererWidget( QgsVectorLayer *layer, QgsStyle *style );
    QgsExpressionContext createExpressionContext() const override;

    virtual QgsFeatureRenderer *renderer() = 0;

    void showSymbolLevelsDialog( QgsFeatureRenderer *r );

    virtual void setContext( const QgsSymbolWidgetContext &context );

    QgsSymbolWidgetContext context() const;

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

    void applyChanges();
 
    void setDockMode( bool dockMode ) override;

    virtual void disableSymbolLevels() SIP_SKIP;
 
  signals:

    void layerVariablesChanged();

    Q_DECL_DEPRECATED void symbolLevelsChanged() SIP_DEPRECATED;
 
  protected:
    QgsVectorLayer *mLayer = nullptr;
    QgsStyle *mStyle = nullptr;
    QMenu *contextMenu = nullptr;
    QAction *mCopyAction = nullptr;
    QAction *mPasteAction = nullptr;

    QAction *mCopySymbolAction = nullptr;

    QAction *mPasteSymbolAction = nullptr;

    QgsSymbolWidgetContext mContext;

    virtual QList<QgsSymbol *> selectedSymbols() { return QList<QgsSymbol *>(); }
    virtual void refreshSymbolView() {}

    QgsDataDefinedSizeLegendWidget *createDataDefinedSizeLegendWidget( const QgsMarkerSymbol *symbol, const QgsDataDefinedSizeLegend *ddsLegend ) SIP_FACTORY;

    virtual void setSymbolLevels( const QList<QgsLegendSymbolItem> &levels, bool enabled );

    void registerDataDefinedButton( QgsPropertyOverrideButton *button, QgsFeatureRenderer::Property key );
 
  protected slots:
    void contextMenuViewCategories( QPoint p );
    void changeSymbolColor();
    void changeSymbolOpacity();
    void changeSymbolUnit();
    void changeSymbolWidth();
    void changeSymbolSize();
    void changeSymbolAngle();
 
 
    virtual void copy() {}
    virtual void paste() {}

    virtual void pasteSymbolToSelection();
 
  private slots:
 
    void copySymbol();
    void updateDataDefinedProperty();
 
  private:
    virtual void apply() SIP_FORCE;
};
 

 
#include <QObject>
 
class QMenu;
class QgsField;
class QgsFields;
 
#include "ui_widget_set_dd_value.h"
#include "qgis_gui.h"
 

class GUI_EXPORT QgsDataDefinedValueDialog : public QDialog, public Ui::QgsDataDefinedValueBaseDialog, private QgsExpressionContextGenerator
{
    Q_OBJECT
 
  public:
    QgsDataDefinedValueDialog( const QList<QgsSymbol *> &symbolList, QgsVectorLayer *layer, const QString &label );

    void setContext( const QgsSymbolWidgetContext &context );

    QgsSymbolWidgetContext context() const;

    const QgsVectorLayer *vectorLayer() const { return mLayer; }
 
  public slots:
    void dataDefinedChanged();
 
  protected:
    void init( int propertyKey ); // needed in children ctor to call virtual
 
  private:
    QgsProperty symbolDataDefined() const SIP_FORCE;
 
    virtual QgsProperty symbolDataDefined( const QgsSymbol * ) const = 0 SIP_FORCE;
    virtual double value( const QgsSymbol * ) const = 0 SIP_FORCE;
    virtual void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) = 0 SIP_FORCE;
 
    QList<QgsSymbol *> mSymbolList;
    QgsVectorLayer *mLayer = nullptr;
 
    QgsSymbolWidgetContext mContext;
 
    QgsExpressionContext createExpressionContext() const override;
};

class GUI_EXPORT QgsDataDefinedSizeDialog : public QgsDataDefinedValueDialog
{
    Q_OBJECT
  public:
    QgsDataDefinedSizeDialog( const QList<QgsSymbol *> &symbolList, QgsVectorLayer *layer );
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override;
 
    void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) override;
 
  private:
    std::shared_ptr<QgsMarkerSymbol> mAssistantSymbol;
};

class GUI_EXPORT QgsDataDefinedRotationDialog : public QgsDataDefinedValueDialog
{
    Q_OBJECT
  public:
    QgsDataDefinedRotationDialog( const QList<QgsSymbol *> &symbolList, QgsVectorLayer *layer );
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override;
 
    void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) override;
};

class GUI_EXPORT QgsDataDefinedWidthDialog : public QgsDataDefinedValueDialog
{
    Q_OBJECT
  public:
    QgsDataDefinedWidthDialog( const QList<QgsSymbol *> &symbolList, QgsVectorLayer *layer );
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override;
 
    void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) override;
};
 
 
#endif // QGSRENDERERWIDGET_H