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src
core
qgsoverlayobjectpositionmanager.h
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/***************************************************************************
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qgsoverlayobjectpositionmanager.h - description
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---------------------------------
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begin : January 2007
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copyright : (C) 2007 by Marco Hugentobler
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email : marco dot hugentobler at karto dot baug dot ethz dot ch
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSOVERLAYOBJECTPOSITIONMANAGER_H
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#define QGSOVERLAYOBJECTPOSITIONMANAGER_H
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#include <QList>
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#include "
qgis.h
"
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class
QgsRenderContext
;
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class
QgsVectorLayer
;
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class
QgsVectorOverlay
;
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class
QgsOverlayObjectPositionManager
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{
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public
:
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//virtual destructor needed for proper memory management
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virtual
~QgsOverlayObjectPositionManager
() {}
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virtual
void
addLayer
(
QgsVectorLayer
* vl, QList<QgsVectorOverlay*>& overlays ) = 0;
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virtual
void
removeLayers
() = 0;
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virtual
void
findObjectPositions
(
const
QgsRenderContext
& context,
QGis::UnitType
unitType ) = 0;
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};
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#endif
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