/usr/include/qgis/qgsrendercontext.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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qgsrendercontext.h
------------------
begin : March 16, 2008
copyright : (C) 2008 by Marco Hugentobler
email : marco dot hugentobler at karto dot baug dot ethz 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 QGSRENDERCONTEXT_H
#define QGSRENDERCONTEXT_H
#include "qgscoordinatetransform.h"
#include "qgsmaptopixel.h"
#include "qgsrectangle.h"
class QPainter;
class QgsLabelingEngineInterface;
/** \ingroup core
* Contains information about the context of a rendering operation.
* The context of a rendering operation defines properties such as
* the conversion ratio between screen and map units, the extents /
* bounding box to be rendered etc.
**/
class CORE_EXPORT QgsRenderContext
{
public:
QgsRenderContext();
~QgsRenderContext();
//getters
QPainter* painter() {return mPainter;}
const QPainter* constPainter() const { return mPainter; }
const QgsCoordinateTransform* coordinateTransform() const {return mCoordTransform;}
const QgsRectangle& extent() const {return mExtent;}
const QgsMapToPixel& mapToPixel() const {return mMapToPixel;}
double scaleFactor() const {return mScaleFactor;}
double rasterScaleFactor() const {return mRasterScaleFactor;}
bool renderingStopped() const {return mRenderingStopped;}
bool forceVectorOutput() const {return mForceVectorOutput;}
bool drawEditingInformation() const {return mDrawEditingInformation;}
double rendererScale() const {return mRendererScale;}
//! Added in QGIS v1.4
QgsLabelingEngineInterface* labelingEngine() const { return mLabelingEngine; }
//setters
/**Sets coordinate transformation. QgsRenderContext takes ownership and deletes if necessary*/
void setCoordinateTransform( QgsCoordinateTransform* t );
void setMapToPixel( const QgsMapToPixel& mtp ) {mMapToPixel = mtp;}
void setExtent( const QgsRectangle& extent ) {mExtent = extent;}
void setDrawEditingInformation( bool b ) {mDrawEditingInformation = b;}
void setRenderingStopped( bool stopped ) {mRenderingStopped = stopped;}
void setScaleFactor( double factor ) {mScaleFactor = factor;}
void setRasterScaleFactor( double factor ) {mRasterScaleFactor = factor;}
void setRendererScale( double scale ) {mRendererScale = scale;}
void setPainter( QPainter* p ) {mPainter = p;}
//! Added in QGIS v1.5
void setForceVectorOutput( bool force ) {mForceVectorOutput = force;}
//! Added in QGIS v1.4
void setLabelingEngine( QgsLabelingEngineInterface* iface ) { mLabelingEngine = iface; }
private:
/**Painter for rendering operations*/
QPainter* mPainter;
/**For transformation between coordinate systems. Can be 0 if on-the-fly reprojection is not used*/
QgsCoordinateTransform* mCoordTransform;
/**True if vertex markers for editing should be drawn*/
bool mDrawEditingInformation;
QgsRectangle mExtent;
/**If true then no rendered vector elements should be cached as image*/
bool mForceVectorOutput;
QgsMapToPixel mMapToPixel;
/**True if the rendering has been canceled*/
bool mRenderingStopped;
/**Factor to scale line widths and point marker sizes*/
double mScaleFactor;
/**Factor to scale rasters*/
double mRasterScaleFactor;
/**Map scale*/
double mRendererScale;
/**Labeling engine (can be NULL)*/
QgsLabelingEngineInterface* mLabelingEngine;
};
#endif
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