QgsRasterViewPort.__attribute_docs__={'mTopLeftPoint':'Coordinate (in output device coordinate system) of top left corner\nof the part of the raster that is to be rendered.','mBottomRightPoint':'Coordinate (in output device coordinate system) of bottom right corner\nof the part of the raster that is to be rendered.','mWidth':'Width, number of columns to be rendered','mHeight':'Height, number of rows to be rendered','mDrawnExtent':'Intersection of current map extent and layer extent, in map (destination) CRS','mSrcCRS':'Source (layer) coordinate system','mDestCRS':'Target (map) coordinate system','mTransformContext':'Coordinate transform context'}