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Attempted fix for bug #928402 - where artifacts are drawn during raster rendering.

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git-svn-id: http://svn.osgeo.org/qgis/trunk@1144 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
timlinux 2004-04-03 09:27:16 +00:00
parent 6b93ef7c4f
commit 8bc1981571
1 changed files with 6 additions and 0 deletions
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6
src/qgsrasterlayer.cpp
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@ -555,6 +555,7 @@ void QgsRasterLayer::drawSingleBandGray(QPainter * theQPainter, RasterViewPort *
//std::cout << "Colour Interpretation for this band is : " << myColorInterpretation << std::endl;
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
#ifdef QGISDEBUG
std::cout << "draw gray band Retrieving stats" << std::endl;
@ -627,6 +628,7 @@ void QgsRasterLayer::drawSingleBandPseudoColor(QPainter * theQPainter, RasterVie
//std::cout << "Colour Interpretation for this band is : " << myColorInterpretation << std::endl;
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
RasterBandStats myRasterBandStats = getRasterBandStats(theBandNoInt);
double myRangeDouble = myRasterBandStats.rangeDouble;
@ -801,6 +803,7 @@ void QgsRasterLayer::drawPalettedSingleBandGray(QPainter * theQPainter,
// print each point in myGdalScanData using color looked up in color table
GDALColorTable *colorTable = myGdalBand->GetColorTable();
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
@ -884,6 +887,7 @@ void QgsRasterLayer::drawPalettedSingleBandPseudoColor(QPainter * theQPainter,
// print each point in myGdalScanData using color looked up in color table
GDALColorTable *colorTable = myGdalBand->GetColorTable();
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
@ -1085,6 +1089,7 @@ void QgsRasterLayer::drawPalettedMultiBandColor(QPainter * theQPainter, RasterVi
// print each point in myGdalScanData using color looked up in color table
GDALColorTable *colorTable = myGdalBand->GetColorTable();
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
for (int myColumnInt = 0; myColumnInt < theRasterViewPort->drawableAreaYDimInt; myColumnInt++)
{
@ -1212,6 +1217,7 @@ void QgsRasterLayer::drawMultiBandColor(QPainter * theQPainter, RasterViewPort *
//std::cout << "Colour Interpretation for this band is : " << myColorInterpretation << std::endl;
int myRedInt, myGreenInt, myBlueInt;
QImage myQImage = QImage(theRasterViewPort->drawableAreaXDimInt, theRasterViewPort->drawableAreaYDimInt, 32);
myQImage.fill(0);
myQImage.setAlphaBuffer(true);
for (int myColumnInt = 0; myColumnInt < theRasterViewPort->drawableAreaYDimInt; myColumnInt++)
{