Python Map.renderComposition方法代码示例

# 需要导入模块: from safe_qgis.map import Map [as 别名]
# 或者: from safe_qgis.map.Map import renderComposition [as 别名]
    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)
        setupPrinter(myPath)
        myMap.setupComposition()

        myImage = QtGui.QImage(10, 10, QtGui.QImage.Format_RGB32)
        myImage.setDotsPerMeterX(dpiToMeters(300))
        myImage.setDotsPerMeterY(dpiToMeters(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 qgisVersion() >= 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
            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

        myControlImages = ['windowsArtifacts.png']
        myTolerance = 0
        myFlag, myMessage = checkImages(myControlImages,
                                        myImagePath,
                                        myTolerance)
        myMessage += ('\nWe want these images to match, if they do not '
                      'there may be rendering artifacts in windows.\n')
        assert myFlag, myMessage

# 需要导入模块: from safe_qgis.map import Map [as 别名]
# 或者: from safe_qgis.map.Map import renderComposition [as 别名]
    def test_renderComposition(self):
        """Test making an image of the map only."""
        LOGGER.info('Testing renderComposition')
        myLayer, _ = loadLayer('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

        myAcceptableImages = [
            'renderComposition.png',
            'renderComposition-variantUB12.04.png',
            'renderComposition-variantUB12.10.png',
            'renderComposition-variantOSXml.png',
            'renderComposition-variantWindowsVistaSP2-32.png',
            'renderComposition-variantJenkins.png',
            'renderComposition-variantUB11.10-64.png',
            'renderComposition-variantLinuxMint-14-x86_64.png',
            'renderComposition-variantWindows7-SP1-AMD64.png',
            'renderComposition-variantUB11.04-64.png']
        # 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
        print myImagePath
        print myAcceptableImages
        myFlag, myMessage = checkImages(myAcceptableImages,
                                        myImagePath,
                                        myTolerance)
        assert myFlag, myMessage