src/gui/symbology-ng/qgsrendererv2widget.h

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/***************************************************************************
    qgsrendererv2widget.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 QGSRENDERERV2WIDGET_H
#define QGSRENDERERV2WIDGET_H

#include <QWidget>
#include <QMenu>
#include "qgssymbolv2.h"

class QgsVectorLayer;
class QgsStyleV2;
class QgsFeatureRendererV2;
class QgsSymbolV2SelectorDialog;


class GUI_EXPORT QgsRendererV2Widget : public QWidget
{
    Q_OBJECT
  public:
    QgsRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style );

    virtual ~QgsRendererV2Widget() {}

    virtual QgsFeatureRendererV2* renderer() = 0;

    void showSymbolLevelsDialog( QgsFeatureRendererV2* r );

  protected:
    QgsVectorLayer* mLayer;
    QgsStyleV2* mStyle;
    QMenu* contextMenu;

    virtual QList<QgsSymbolV2*> selectedSymbols() { return QList<QgsSymbolV2*>(); }
    virtual void refreshSymbolView() {}

  protected slots:
    void  contextMenuViewCategories( const QPoint& p );
    void changeSymbolColor();
    void changeSymbolTransparency();
    void changeSymbolUnit();
    void changeSymbolWidth();
    void changeSymbolSize();
};



#include <QObject>

class QMenu;
class QgsField;
class QgsFields;


class QgsRendererV2DataDefinedMenus : public QObject
{
    Q_OBJECT

  public:

    QgsRendererV2DataDefinedMenus( QMenu* menu, const QgsFields& flds, QString rotationField, QString sizeScaleField, QgsSymbolV2::ScaleMethod scaleMethod );
    ~QgsRendererV2DataDefinedMenus();

    void populateMenu( QMenu* menu, const char* slot, QString fieldName, QActionGroup *actionGroup );
#if 0
    void updateMenu( QActionGroup* actionGroup, QString fieldName );
#endif
  public slots:

    void rotationFieldSelected( QAction *a );
    void sizeScaleFieldSelected( QAction *a );
    void scaleMethodSelected( QAction *a );

  signals:

    void rotationFieldChanged( QString fldName );
    void sizeScaleFieldChanged( QString fldName );
    void scaleMethodChanged( QgsSymbolV2::ScaleMethod scaleMethod );

  protected:
    QMenu* mRotationMenu;
    QMenu* mSizeScaleMenu;
    QActionGroup *mSizeMethodActionGroup;
    QActionGroup *mRotationAttributeActionGroup;
    QActionGroup *mSizeAttributeActionGroup;
    const QgsFields& mFlds;
};

#endif // QGSRENDERERV2WIDGET_H