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src
gui
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 )
override
;
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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 override
;
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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,
bool
resetRotation =
true
);
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QgsPoint
toMapCoordinates(
const
QPoint
& point )
const
;
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QPointF
toCanvasCoordinates(
const
QgsPoint
& point )
const
;
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protected
:
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QgsMapCanvas
*
mMapCanvas
;
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QgsRectangle
mRect
;
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double
mRectRotation
;
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QPoint
mPanningOffset
;
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QSizeF
mItemSize
;
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};
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#endif
QWidget
QgsRectangle
A rectangle specified with double values.
Definition:
qgsrectangle.h:35
QGraphicsItem::paint
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)=0
QgsMapCanvasItem::mRectRotation
double mRectRotation
Definition:
qgsmapcanvasitem.h:95
QgsMapCanvasItem
An abstract class for items that can be placed on the map canvas.
Definition:
qgsmapcanvasitem.h:30
QGraphicsItem
QPoint
QgsMapCanvasItem::mPanningOffset
QPoint mPanningOffset
offset from normal position due current panning operation, used when converting map coordinates to mo...
Definition:
qgsmapcanvasitem.h:100
QgsMapCanvas
Map canvas is a class for displaying all GIS data types on a canvas.
Definition:
qgsmapcanvas.h:105
QPointF
QgsMapCanvasItem::mItemSize
QSizeF mItemSize
cached size of the item (to return in boundingRect())
Definition:
qgsmapcanvasitem.h:103
QPainter
QgsMapCanvasItem::mRect
QgsRectangle mRect
cached canvas item rectangle in map coordinates encodes position (xmin,ymax) and size (width/height) ...
Definition:
qgsmapcanvasitem.h:93
qgsrectangle.h
QgsPoint
A class to represent a point.
Definition:
qgspoint.h:63
QgsRenderContext
Contains information about the context of a rendering operation.
Definition:
qgsrendercontext.h:39
QSizeF
QGraphicsItem::boundingRect
virtual QRectF boundingRect() const =0
QRectF
QgsMapCanvasItem::mMapCanvas
QgsMapCanvas * mMapCanvas
pointer to map canvas
Definition:
qgsmapcanvasitem.h:83
QStyleOptionGraphicsItem
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