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qgsmapcanvasitem.h
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/***************************************************************************
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qgsmapcanvasitem.h - base class for map canvas items
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----------------------
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begin : February 2006
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copyright : (C) 2006 by Martin Dobias
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email : wonder.sk at gmail dot com
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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 QGSMAPCANVASITEM_H
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#define QGSMAPCANVASITEM_H
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#include <QGraphicsItem>
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#include "
qgsrectangle.h
"
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class
QgsMapCanvas
;
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class
QgsRenderContext
;
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class
QPainter;
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class
GUI_EXPORT
QgsMapCanvasItem
:
public
QGraphicsItem
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{
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protected
:
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QgsMapCanvasItem
(
QgsMapCanvas
* mapCanvas );
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virtual
~
QgsMapCanvasItem
();
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virtual
void
paint( QPainter * painter ) = 0;
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virtual
void
paint( QPainter * painter,
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const
QStyleOptionGraphicsItem * option,
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QWidget * widget = 0 );
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void
updateCanvas();
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bool
setRenderContextVariables( QPainter* p,
QgsRenderContext
& context )
const
;
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public
:
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virtual
void
updatePosition();
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virtual
QRectF boundingRect()
const
;
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Q_DECL_DEPRECATED
void
setPanningOffset(
const
QPoint& point );
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QgsRectangle
rect()
const
;
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void
setRect(
const
QgsRectangle
& r );
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QgsPoint
toMapCoordinates(
const
QPoint& point );
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QPointF toCanvasCoordinates(
const
QgsPoint
& point );
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protected
:
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QgsMapCanvas
*
mMapCanvas
;
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QgsRectangle
mRect
;
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QPoint
mPanningOffset
;
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QSizeF
mItemSize
;
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};
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#endif
QgsRectangle
A rectangle specified with double values.
Definition:
qgsrectangle.h:35
QgsMapCanvasItem
An abstract class for items that can be placed on the map canvas.
Definition:
qgsmapcanvasitem.h:30
QgsMapCanvasItem::mPanningOffset
QPoint mPanningOffset
offset from normal position due current panning operation, used when converting map coordinates to mo...
Definition:
qgsmapcanvasitem.h:91
QgsMapCanvas
Map canvas is a class for displaying all GIS data types on a canvas.
Definition:
qgsmapcanvas.h:104
QgsMapCanvasItem::mItemSize
QSizeF mItemSize
cached size of the item (to return in boundingRect())
Definition:
qgsmapcanvasitem.h:94
QgsMapCanvasItem::mRect
QgsRectangle mRect
canvas item rectangle (in map coordinates)
Definition:
qgsmapcanvasitem.h:87
qgsrectangle.h
QgsPoint
A class to represent a point geometry.
Definition:
qgspoint.h:63
QgsRenderContext
Contains information about the context of a rendering operation.
Definition:
qgsrendercontext.h:39
QgsMapCanvasItem::mMapCanvas
QgsMapCanvas * mMapCanvas
pointer to map canvas
Definition:
qgsmapcanvasitem.h:84
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