def test_windowsDrawingArtifacts(self):
"""Test that windows rendering does not make artifacts"""
# sometimes spurious lines are drawn on the layout
LOGGER.info('Testing windowsDrawingArtifacts')
myPath = unique_filename(
prefix='artifacts',
suffix='.pdf',
dir=temp_dir('test'))
myMap = Map(IFACE)
setup_printer(myPath)
myMap.setupComposition()
myImage = QtGui.QImage(10, 10, QtGui.QImage.Format_RGB32)
myImage.setDotsPerMeterX(dpi_to_meters(300))
myImage.setDotsPerMeterY(dpi_to_meters(300))
#myImage.fill(QtGui.QColor(250, 250, 250))
# Look at the output, you will see antialiasing issues around some
# of the boxes drawn...
# myImage.fill(QtGui.QColor(200, 200, 200))
myImage.fill(200 + 200 * 256 + 200 * 256 * 256)
myFilename = os.path.join(temp_dir(), 'greyBox')
myImage.save(myFilename, 'PNG')
for i in range(10, 190, 10):
myPicture = QgsComposerPicture(myMap.composition)
myPicture.setPictureFile(myFilename)
if qgis_version() >= 10800: # 1.8 or newer
myPicture.setFrameEnabled(False)
else:
myPicture.setFrame(False)
myPicture.setItemPosition(i, # x
i, # y
10, # width
10) # height
myMap.composition.addItem(myPicture)
# Same drawing drawn directly as a pixmap
# noinspection PyCallByClass,PyTypeChecker,PyArgumentList
myPixmapItem = myMap.composition.addPixmap(
QtGui.QPixmap.fromImage(myImage))
myPixmapItem.setOffset(i, i + 20)
# Same drawing using our drawImage Helper
myWidthMM = 1
myMap.drawImage(myImage, myWidthMM, i, i + 40)
myImagePath, _, _ = myMap.renderComposition()
# when this test no longer matches our broken render hash
# we know the issue is fixed
myTolerance = 0
myFlag, myMessage = check_images(
'windowsArtifacts',
myImagePath,
myTolerance)
myMessage += ('\nWe want these images to match, if they do not '
'there may be rendering artifacts in windows.\n')
assert myFlag, myMessage
def test_renderComposition(self):
"""Test making an image of the map only."""
LOGGER.info('Testing renderComposition')
myLayer, _ = load_layer('test_shakeimpact.shp')
myCanvasLayer = QgsMapCanvasLayer(myLayer)
CANVAS.setLayerSet([myCanvasLayer])
myRect = QgsRectangle(106.7894, -6.2308, 106.8004, -6.2264)
CANVAS.setExtent(myRect)
CANVAS.refresh()
myMap = Map(IFACE)
myMap.setImpactLayer(myLayer)
myMap.composeMap()
myImagePath, myControlImage, myTargetArea = myMap.renderComposition()
LOGGER.debug(myImagePath)
assert myControlImage is not None
myDimensions = [myTargetArea.left(),
myTargetArea.top(),
myTargetArea.bottom(),
myTargetArea.right()]
myExpectedDimensions = [0.0, 0.0, 3507.0, 2480.0]
myMessage = 'Expected target area to be %s, got %s' % (
str(myExpectedDimensions), str(myDimensions))
assert myExpectedDimensions == myDimensions, myMessage
myMessage = 'Rendered output does not exist'
assert os.path.exists(myImagePath), myMessage
# Beta version and version changes can introduce a few extra chars
# into the metadata section so we set a reasonable tolerance to cope
# with this.
myTolerance = 8000
myFlag, myMessage = check_images(
'renderComposition',
myImagePath,
myTolerance)
assert myFlag, myMessage
