sharpetronics/QGIS
1
0
Fork 0
mirror of https://github.com/qgis/QGIS.git synced 2025-10-06 00:07:29 -04:00
Code Issues Packages Projects Releases Wiki Activity

Added option to disable mm units in maprenderer (e.g. for third party apps). Not yet exposed to GUI because of feature freeze

Browse Source 
git-svn-id: http://svn.osgeo.org/qgis/trunk@9283 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
mhugent 2008-09-08 10:12:27 +00:00
parent 17d69a13df
commit 5638905dc0
2 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/core/qgsmaprenderer.cpp
View File

@ -50,6 +50,8 @@ QgsMapRenderer::QgsMapRenderer()
mProjectionsEnabled = FALSE;
mDestCRS = new QgsCoordinateReferenceSystem( GEOEPSG_ID, QgsCoordinateReferenceSystem::EPSG ); //WGS 84
mOutputUnits = QgsMapRenderer::MM;
}
QgsMapRenderer::~QgsMapRenderer()
@ -238,7 +240,11 @@ void QgsMapRenderer::render( QPainter* painter )
//use the specified dpi and not those from the paint device
//because sometimes QPainter units are in a local coord sys (e.g. in case of QGraphicsScene)
double sceneDpi = mScaleCalculator->dpi();
double scaleFactor = sceneDpi / 25.4; //units should always be mm
double scaleFactor = 1.0;
if(mOutputUnits == QgsMapRenderer::MM)
{
scaleFactor = sceneDpi / 25.4;
}
double rasterScaleFactor = ( thePaintDevice->logicalDpiX() + thePaintDevice->logicalDpiY() ) / 2.0 / sceneDpi;
mRenderContext.setScaleFactor( scaleFactor );
mRenderContext.setRasterScaleFactor( rasterScaleFactor );

15
src/core/qgsmaprenderer.h
View File

@ -44,6 +44,14 @@ class CORE_EXPORT QgsMapRenderer : public QObject
public:
/**Output units for pen width and point marker width/height*/
enum OUTPUT_UNITS
{
MM,
PIXEL
//MAP_UNITS probably supported in future versions
};
//! constructor
QgsMapRenderer();
@ -112,6 +120,10 @@ class CORE_EXPORT QgsMapRenderer : public QObject
//! returns CRS ID of destination spatial reference system
const QgsCoordinateReferenceSystem& destinationSrs();
void setOutputUnits(OUTPUT_UNITS u){mOutputUnits = u;}
OUTPUT_UNITS outputUnits() const {return mOutputUnits;}
//! returns current extent of layer set
QgsRect fullExtent();
@ -205,6 +217,9 @@ class CORE_EXPORT QgsMapRenderer : public QObject
//!Encapsulates context of rendering
QgsRenderContext mRenderContext;
//!Output units
OUTPUT_UNITS mOutputUnits;
};
#endif