QGIS » QGIS Application

import sys

from PyQt4.QtCore import *

from PyQt4.QtGui import *

app = QApplication(sys.argv)

printer = QPrinter ( QPrinter.HighResolution )

printer.setOutputFormat ( QPrinter.PdfFormat )

printer.setOutputFileName ( 'test.pdf' )

w = 10

h = 10

image = QImage( w, h, QImage.Format_ARGB32 )

image.fill( qRgba( 255, 255, 255, 255 ) )

for i in range(w):

  for j in range(h-i):

    image.setPixel( i, j, qRgba( 0, 0, 0, 0 ) )

painter = QPainter ( printer )

painter.drawImage ( QRect(3000, 3000, 3000, 3000), image )

painter.end()