def testMultiLayer(self):
"""
Test rendering a multi-layer symbol including a random marker fill symbol
"""
s = QgsFillSymbol()
s.deleteSymbolLayer(0)
simple_fill = QgsSimpleFillSymbolLayer(color=QColor(255, 255, 255))
s.appendSymbolLayer(simple_fill.clone())
random_fill = QgsRandomMarkerFillSymbolLayer(12, seed=481523)
marker = QgsSimpleMarkerSymbolLayer(
QgsSimpleMarkerSymbolLayer.Triangle, 4)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
random_fill.setSubSymbol(marker_symbol)
s.appendSymbolLayer(random_fill.clone())
simple_fill = QgsSimpleFillSymbolLayer(
color=QColor(100, 150, 200, 150))
s.appendSymbolLayer(simple_fill.clone())
g = QgsGeometry.fromWkt(
'MultiPolygon(((0 0, 5 0, 5 10, 0 10, 0 0),(1 1, 1 9, 4 9, 4 1, 1 1)), ((6 0, 10 0, 10 5, 6 5, 6 0)), ((8 6, 10 6, 10 10, 8 10, 8 6)))'
)
rendered_image = self.renderGeometry(s, g)
self.assertTrue(
self.imageCheck('randommarkerfill_multilayer',
'randommarkerfill_multilayer', rendered_image))
def testDataDefinedOpacity(self):
poly_shp = os.path.join(TEST_DATA_DIR, 'polys.shp')
poly_layer = QgsVectorLayer(poly_shp, 'Polys', 'ogr')
self.assertTrue(poly_layer.isValid())
s = QgsFillSymbol()
s.deleteSymbolLayer(0)
random_fill = QgsRandomMarkerFillSymbolLayer(1, seed=481523)
marker = QgsSimpleMarkerSymbolLayer(QgsSimpleMarkerSymbolLayer.Circle,
6)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeWidth(1)
marker.setDataDefinedProperty(
QgsSymbolLayer.PropertyFillColor,
QgsProperty.fromExpression("if(Name='Dam', 'red', 'green')"))
marker.setDataDefinedProperty(
QgsSymbolLayer.PropertyStrokeColor,
QgsProperty.fromExpression("if(Name='Dam', 'magenta', 'blue')"))
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_symbol.setOpacity(0.5)
random_fill.setSubSymbol(marker_symbol)
s.appendSymbolLayer(random_fill.clone())
s.setDataDefinedProperty(
QgsSymbol.PropertyOpacity,
QgsProperty.fromExpression("if(\"Value\" >10, 25, 50)"))
poly_layer.setRenderer(QgsSingleSymbolRenderer(s))
ms = QgsMapSettings()
ms.setOutputSize(QSize(400, 400))
ms.setOutputDpi(96)
ms.setExtent(QgsRectangle(-118.5, 19.0, -81.4, 50.4))
ms.setLayers([poly_layer])
# Test rendering
renderchecker = QgsMultiRenderChecker()
renderchecker.setMapSettings(ms)
renderchecker.setControlPathPrefix('symbol_randommarkerfill')
renderchecker.setControlName('expected_randommarker_ddopacity')
res = renderchecker.runTest('expected_randommarker_ddopacity')
self.report += renderchecker.report()
self.assertTrue(res)
def testSimple(self):
s = QgsFillSymbol()
s.deleteSymbolLayer(0)
random_fill = QgsRandomMarkerFillSymbolLayer(10, seed=481523)
marker = QgsSimpleMarkerSymbolLayer(
QgsSimpleMarkerSymbolLayer.Triangle, 4)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
random_fill.setSubSymbol(marker_symbol)
s.appendSymbolLayer(random_fill.clone())
self.assertEqual(s.symbolLayer(0).pointCount(), 10)
self.assertEqual(s.symbolLayer(0).seed(), 481523)
s.symbolLayer(0).setPointCount(5)
s.symbolLayer(0).setSeed(42)
self.assertEqual(s.symbolLayer(0).pointCount(), 5)
self.assertEqual(s.symbolLayer(0).seed(), 42)
s2 = s.clone()
self.assertEqual(s2.symbolLayer(0).pointCount(), 5)
self.assertEqual(s2.symbolLayer(0).seed(), 42)
doc = QDomDocument()
context = QgsReadWriteContext()
element = QgsSymbolLayerUtils.saveSymbol('test', s, doc, context)
s2 = QgsSymbolLayerUtils.loadSymbol(element, context)
self.assertEqual(s2.symbolLayer(0).pointCount(), 5)
self.assertEqual(s2.symbolLayer(0).seed(), 42)
# rendering test
s3 = QgsFillSymbol()
s3.deleteSymbolLayer(0)
s3.appendSymbolLayer(random_fill.clone())
g = QgsGeometry.fromWkt(
'Polygon((0 0, 10 0, 10 10, 0 10, 0 0),(1 1, 1 2, 2 2, 2 1, 1 1),(8 8, 9 8, 9 9, 8 9, 8 8))'
)
rendered_image = self.renderGeometry(s3, g)
self.assertTrue(
self.imageCheck('randommarkerfill', 'randommarkerfill',
rendered_image))
s3.symbolLayer(0).setPointCount(3)
g = QgsGeometry.fromWkt(
'Polygon((0 0, 10 0, 10 10, 0 10, 0 0),(1 1, 1 2, 2 2, 2 1, 1 1),(8 8, 9 8, 9 9, 8 9, 8 8))'
)
rendered_image = self.renderGeometry(s3, g)
self.assertTrue(
self.imageCheck('randommarkerfill_3', 'randommarkerfill_3',
rendered_image))
s3.symbolLayer(0).setSeed(12783)
g = QgsGeometry.fromWkt(
'Polygon((0 0, 10 0, 10 10, 0 10, 0 0),(1 1, 1 2, 2 2, 2 1, 1 1),(8 8, 9 8, 9 9, 8 9, 8 8))'
)
rendered_image = self.renderGeometry(s3, g)
self.assertTrue(
self.imageCheck('randommarkerfill_seed', 'randommarkerfill_seed',
rendered_image))
# random seed
s3.symbolLayer(0).setSeed(0)
g = QgsGeometry.fromWkt(
'Polygon((0 0, 10 0, 10 10, 0 10, 0 0),(1 1, 1 2, 2 2, 2 1, 1 1),(8 8, 9 8, 9 9, 8 9, 8 8))'
)
rendered_image = self.renderGeometry(s3, g)
self.assertFalse(
self.imageCheck('randommarkerfill_seed',
'randommarkerfill_seed',
rendered_image,
expect_fail=True))
# density-based count
s3.symbolLayer(0).setSeed(1)
s3.symbolLayer(0).setCountMethod(
QgsRandomMarkerFillSymbolLayer.DensityBasedCount)
s3.symbolLayer(0).setPointCount(5)
s3.symbolLayer(0).setDensityArea(250) # 250 square millimeter
g = QgsGeometry.fromWkt(
'Polygon((0 0, 10 0, 10 10, 0 10, 0 0),(1 1, 1 2, 2 2, 2 1, 1 1),(8 8, 9 8, 9 9, 8 9, 8 8))'
)
rendered_image = self.renderGeometry(s3, g)
self.assertTrue(
self.imageCheck('randommarkerfill_densitybasedcount',
'randommarkerfill_densitybasedcount',
rendered_image))
def testCreate(self):
random_fill = QgsRandomMarkerFillSymbolLayer(10, seed=5)
self.assertEqual(random_fill.seed(), 5)
fill2 = QgsRandomMarkerFillSymbolLayer.create(random_fill.properties())
self.assertEqual(fill2.seed(), 5)
random_fill = QgsRandomMarkerFillSymbolLayer(10)
self.assertEqual(random_fill.seed(), 0)
fill2 = QgsRandomMarkerFillSymbolLayer.create(random_fill.properties())
self.assertEqual(fill2.seed(), 0)
# a newly created random fill should default to a random seed, not 0
random_fill = QgsRandomMarkerFillSymbolLayer.create({})
self.assertNotEqual(random_fill.seed(), 0)