qgsannotationitem.h

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/***************************************************************************
    qgsannotationitem.h
    ----------------
    copyright            : (C) 2019 by Sandro Mani
    email                : smani at sourcepole dot ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSANNOTATIONITEM_H
#define QGSANNOTATIONITEM_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgscoordinatereferencesystem.h"
#include "qgslinestring.h"
#include "qgspolygon.h"
 
class QgsFeedback;
class QgsMarkerSymbol;
class QgsLineSymbol;
class QgsFillSymbol;
class QgsAnnotationItemNode;
class QgsAbstractAnnotationItemEditOperation;
class QgsAnnotationItemEditOperationTransientResults;
class QgsRenderContext;
class QgsReadWriteContext;
 
class CORE_EXPORT QgsAnnotationItem
{
 
#ifdef SIP_RUN
    SIP_CONVERT_TO_SUBCLASS_CODE
    if ( sipCpp->type() == QLatin1String( "marker" ) )
    {
      sipType = sipType_QgsAnnotationMarkerItem;
    }
    else if ( sipCpp->type() == QLatin1String( "linestring" ) )
    {
      sipType = sipType_QgsAnnotationLineItem;
    }
    else if ( sipCpp->type() == QLatin1String( "polygon" ) )
    {
      sipType = sipType_QgsAnnotationPolygonItem;
    }
    else if ( sipCpp->type() == QLatin1String( "pointtext" ) )
    {
      sipType = sipType_QgsAnnotationPointTextItem;
    }
    else
    {
      sipType = 0;
    }
    SIP_END
#endif
 
  public:
 
    QgsAnnotationItem() = default;
 
#ifndef SIP_RUN
    QgsAnnotationItem( const QgsAnnotationItem &other ) = delete;
    QgsAnnotationItem &operator=( const QgsAnnotationItem &other ) = delete;
#endif
 
    virtual ~QgsAnnotationItem() = default;
 
    virtual Qgis::AnnotationItemFlags flags() const;
 
    virtual QgsAnnotationItem *clone() = 0 SIP_FACTORY;
 
    virtual QString type() const = 0;
 
    virtual QgsRectangle boundingBox() const = 0;
 
    virtual QgsRectangle boundingBox( QgsRenderContext &context ) const { Q_UNUSED( context ) return boundingBox();}
 
    virtual void render( QgsRenderContext &context, QgsFeedback *feedback ) = 0;
 
    virtual bool writeXml( QDomElement &element, QDomDocument &document, const QgsReadWriteContext &context ) const = 0;
 
    virtual bool readXml( const QDomElement &element, const QgsReadWriteContext &context ) = 0;
 
    virtual Qgis::AnnotationItemEditOperationResult applyEdit( QgsAbstractAnnotationItemEditOperation *operation );
 
    virtual QgsAnnotationItemEditOperationTransientResults *transientEditResults( QgsAbstractAnnotationItemEditOperation *operation ) SIP_FACTORY;
 
    int zIndex() const { return mZIndex; }
 
    void setZIndex( int index ) { mZIndex = index; }
 
    virtual QList< QgsAnnotationItemNode > nodes() const;
 
    bool useSymbologyReferenceScale() const { return mUseReferenceScale; }
 
    void setUseSymbologyReferenceScale( bool enabled ) { mUseReferenceScale = enabled; }
 
    double symbologyReferenceScale() const { return mReferenceScale; }
 
    void setSymbologyReferenceScale( double scale ) { mReferenceScale = scale; }
 
  protected:
 
    void copyCommonProperties( const QgsAnnotationItem *other );
 
    bool writeCommonProperties( QDomElement &element, QDomDocument &document, const QgsReadWriteContext &context ) const;
 
    bool readCommonProperties( const QDomElement &element, const QgsReadWriteContext &context );
 
  private:
 
    int mZIndex = 0;
 
    bool mUseReferenceScale = false;
    double mReferenceScale = 0;
 
#ifdef SIP_RUN
    QgsAnnotationItem( const QgsAnnotationItem &other );
#endif
 
};
 
#endif // QGSANNOTATIONITEM_H