qgsmapcanvasannotationitem.h

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/***************************************************************************
                              qgsmapcanvasannotationitem.h
                              ----------------------------
  begin                : January 2017
  copyright            : (C) 2017 by Nyall Dawson
  email                : nyall dot dawson 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 QGSMAPCANVASANNOTATIONITEM_H
#define QGSMAPCANVASANNOTATIONITEM_H
 
#ifdef SIP_RUN
//%ModuleHeaderCode
// For ConvertToSubClassCode.
#include "qgsmapcanvasannotationitem.h"
 
//%End
#endif
 
#include "qgsmapcanvasitem.h"
#include "qgis_gui.h"
 
class QgsAnnotation;

class GUI_EXPORT QgsMapCanvasAnnotationItem : public QObject, public QgsMapCanvasItem
{
    Q_OBJECT
 
#ifdef SIP_RUN
    SIP_CONVERT_TO_SUBCLASS_CODE
    if ( dynamic_cast<QgsMapCanvasAnnotationItem *>( sipCpp ) )
    {
      sipType = sipType_QgsMapCanvasAnnotationItem;
      *sipCppRet = dynamic_cast<QgsMapCanvasAnnotationItem *>( sipCpp );
    }
    else
      sipType = nullptr;
  SIP_END
#endif
 
  public:
    enum MouseMoveAction
    {
      NoAction,            
      MoveMapPosition,     
      MoveFramePosition,   
      ResizeFrameUp,       
      ResizeFrameDown,     
      ResizeFrameLeft,     
      ResizeFrameRight,    
      ResizeFrameLeftUp,   
      ResizeFrameRightUp,  
      ResizeFrameLeftDown, 
      ResizeFrameRightDown 
    };

    QgsMapCanvasAnnotationItem( QgsAnnotation *annotation SIP_TRANSFER, QgsMapCanvas *mapCanvas SIP_TRANSFERTHIS );

    const QgsAnnotation *annotation() const SIP_SKIP { return mAnnotation; }

    QgsAnnotation *annotation() { return mAnnotation; }
 
    void updatePosition() override;
 
    QRectF boundingRect() const override;
 
    using QgsMapCanvasItem::paint;
    void paint( QPainter *painter ) override;

    MouseMoveAction moveActionForPosition( QPointF pos ) const;

    Qt::CursorShape cursorShapeForAction( MouseMoveAction moveAction ) const;
 
  private slots:
 
    void updateBoundingRect();
 
    void onCanvasLayersChanged();

    void setFeatureForMapPosition();
 
    void annotationDeleted();
 
  private:
    void drawSelectionBoxes( QPainter *p ) const;

    double scaledSymbolSize() const;
 
    QgsAnnotation *mAnnotation = nullptr;

    QRectF mBoundingRect;
};
 
#endif // QGSMAPCANVASANNOTATIONITEM_H