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 <QWidget>
#include <QMenu>
#include <QStackedWidget>
#include "qgssymbol.h"
#include "qgspanelwidget.h"
#include "qgssymbolwidgetcontext.h"
#include "qgssymbollayer.h"
 
class QgsDataDefinedSizeLegend;
class QgsDataDefinedSizeLegendWidget;
class QgsVectorLayer;
class QgsStyle;
class QgsFeatureRenderer;
class QgsMapCanvas;
 
class GUI_EXPORT QgsRendererWidget : public QgsPanelWidget
{
    Q_OBJECT
  public:
    QgsRendererWidget( QgsVectorLayer *layer, QgsStyle *style );
 
    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;
 
  signals:
 
    void layerVariablesChanged();
 
    void symbolLevelsChanged();
 
  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;
 
  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();
 
  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 )
      : QgsDataDefinedValueDialog( symbolList, layer, tr( "Size" ) )
    {
      init( QgsSymbolLayer::PropertySize );
      if ( !symbolList.isEmpty() && symbolList.at( 0 ) && vectorLayer() )
      {
        mAssistantSymbol.reset( static_cast<const QgsMarkerSymbol *>( symbolList.at( 0 ) )->clone() );
        mDDBtn->setSymbol( mAssistantSymbol );
      }
    }
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override { return static_cast<const QgsMarkerSymbol *>( symbol )->size(); }
 
    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 )
      : QgsDataDefinedValueDialog( symbolList, layer, tr( "Rotation" ) )
    {
      init( QgsSymbolLayer::PropertyAngle );
    }
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override { return static_cast<const QgsMarkerSymbol *>( symbol )->angle(); }
 
    void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) override;
};
 
class GUI_EXPORT QgsDataDefinedWidthDialog : public QgsDataDefinedValueDialog
{
    Q_OBJECT
  public:
    QgsDataDefinedWidthDialog( const QList<QgsSymbol *> &symbolList, QgsVectorLayer *layer )
      : QgsDataDefinedValueDialog( symbolList, layer, tr( "Width" ) )
    {
      init( QgsSymbolLayer::PropertyStrokeWidth );
    }
 
  protected:
    QgsProperty symbolDataDefined( const QgsSymbol *symbol ) const override;
 
    double value( const QgsSymbol *symbol ) const override { return static_cast<const QgsLineSymbol *>( symbol )->width(); }
 
    void setDataDefined( QgsSymbol *symbol, const QgsProperty &dd ) override;
};
 
 
 
#endif // QGSRENDERERWIDGET_H