def testInstance(self):
""" test retrieving global instance """
self.assertTrue(QgsRendererRegistry.instance())
# instance should be initially populated with some default renderers
self.assertTrue('singleSymbol' in QgsRendererRegistry.instance().renderersList())
# register a renderer to the singleton, to test that the same instance is always returned
self.assertFalse('test' in QgsRendererRegistry.instance().renderersList())
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test')))
self.assertTrue('test' in QgsRendererRegistry.instance().renderersList())
def testAddRenderer(self):
""" test adding renderers to registry """
clearRegistry()
# add a renderer
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test2')))
self.assertTrue('test2' in QgsRendererRegistry.instance().renderersList())
# try adding it again - should be rejected due to duplicate name
self.assertFalse(QgsRendererRegistry.instance().addRenderer(TestRenderer('test2')))
self.assertTrue('test2' in QgsRendererRegistry.instance().renderersList())
def testAddRenderer(self):
""" test adding renderers to registry """
clearRegistry()
# add a renderer
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test2')))
self.assertTrue('test2' in QgsRendererRegistry.instance().renderersList())
# try adding it again - should be rejected due to duplicate name
self.assertFalse(QgsRendererRegistry.instance().addRenderer(TestRenderer('test2')))
self.assertTrue('test2' in QgsRendererRegistry.instance().renderersList())
def testInstance(self):
""" test retrieving global instance """
self.assertTrue(QgsRendererRegistry.instance())
# instance should be initially populated with some default renderers
self.assertTrue('singleSymbol' in QgsRendererRegistry.instance().renderersList())
# register a renderer to the singleton, to test that the same instance is always returned
self.assertFalse('test' in QgsRendererRegistry.instance().renderersList())
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test')))
self.assertTrue('test' in QgsRendererRegistry.instance().renderersList())
def testRetrieveRenderer(self):
""" test retrieving renderer by name """
clearRegistry()
# try non-existant renderer
self.assertFalse(QgsRendererRegistry.instance().rendererMetadata('test4'))
# now add it
r = TestRenderer('test4')
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r))
# try retrieving it
result = QgsRendererRegistry.instance().rendererMetadata('test4')
self.assertTrue(result)
self.assertEqual(result.name(), 'test4')
def testRetrieveRenderer(self):
""" test retrieving renderer by name """
clearRegistry()
# try non-existant renderer
self.assertFalse(QgsRendererRegistry.instance().rendererMetadata('test4'))
# now add it
r = TestRenderer('test4')
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r))
# try retrieving it
result = QgsRendererRegistry.instance().rendererMetadata('test4')
self.assertTrue(result)
self.assertEqual(result.name(), 'test4')
def testRenderersByLayerType(self):
""" test retrieving compatible renderers by layer type """
clearRegistry()
# add some renderers
r1 = TestRenderer('test1', QgsRendererAbstractMetadata.PointLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r1))
r2 = TestRenderer('test2', QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r2))
r3 = TestRenderer('test3', QgsRendererAbstractMetadata.PolygonLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r3))
r4 = TestRenderer('test4', QgsRendererAbstractMetadata.PointLayer | QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r4))
# make some layers
point_layer = QgsVectorLayer("Point?field=fldtxt:string",
"pointlayer", "memory")
line_layer = QgsVectorLayer("LineString?field=fldtxt:string",
"linelayer", "memory")
polygon_layer = QgsVectorLayer("Polygon?field=fldtxt:string",
"polylayer", "memory")
# test subsets
self.assertEqual(QgsRendererRegistry.instance().renderersList(point_layer), ['singleSymbol', 'test1', 'test4'])
self.assertEqual(QgsRendererRegistry.instance().renderersList(line_layer), ['singleSymbol', 'test2', 'test4'])
self.assertEqual(QgsRendererRegistry.instance().renderersList(polygon_layer), ['singleSymbol', 'test3'])
def testRenderersByLayerType(self):
""" test retrieving compatible renderers by layer type """
clearRegistry()
# add some renderers
r1 = TestRenderer('test1', QgsRendererAbstractMetadata.PointLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r1))
r2 = TestRenderer('test2', QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r2))
r3 = TestRenderer('test3', QgsRendererAbstractMetadata.PolygonLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r3))
r4 = TestRenderer(
'test4', QgsRendererAbstractMetadata.PointLayer
| QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r4))
# make some layers
point_layer = QgsVectorLayer("Point?field=fldtxt:string", "pointlayer",
"memory")
line_layer = QgsVectorLayer("LineString?field=fldtxt:string",
"linelayer", "memory")
polygon_layer = QgsVectorLayer("Polygon?field=fldtxt:string",
"polylayer", "memory")
# test subsets
self.assertEqual(
QgsRendererRegistry.instance().renderersList(point_layer),
['singleSymbol', 'test1', 'test4'])
self.assertEqual(
QgsRendererRegistry.instance().renderersList(line_layer),
['singleSymbol', 'test2', 'test4'])
self.assertEqual(
QgsRendererRegistry.instance().renderersList(polygon_layer),
['singleSymbol', 'test3'])
def testRenderersList(self):
""" test getting list of renderers from registry """
clearRegistry()
self.assertEqual(QgsRendererRegistry.instance().renderersList(),
['singleSymbol'])
# add some renderers
r1 = TestRenderer('test1', QgsRendererAbstractMetadata.PointLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r1))
r2 = TestRenderer('test2', QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r2))
r3 = TestRenderer('test3', QgsRendererAbstractMetadata.PolygonLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r3))
r4 = TestRenderer(
'test4', QgsRendererAbstractMetadata.PointLayer
| QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r4))
self.assertEqual(QgsRendererRegistry.instance().renderersList(),
['singleSymbol', 'test1', 'test2', 'test3', 'test4'])
# test subsets
self.assertEqual(
QgsRendererRegistry.instance().renderersList(
QgsRendererAbstractMetadata.PointLayer),
['singleSymbol', 'test1', 'test4'])
self.assertEqual(
QgsRendererRegistry.instance().renderersList(
QgsRendererAbstractMetadata.LineLayer),
['singleSymbol', 'test2', 'test4'])
self.assertEqual(
QgsRendererRegistry.instance().renderersList(
QgsRendererAbstractMetadata.PolygonLayer),
['singleSymbol', 'test3'])
self.assertEqual(
QgsRendererRegistry.instance().renderersList(
QgsRendererAbstractMetadata.LineLayer
| QgsRendererAbstractMetadata.PolygonLayer),
['singleSymbol', 'test2', 'test3', 'test4'])
def testRenderersList(self):
""" test getting list of renderers from registry """
clearRegistry()
self.assertEqual(QgsRendererRegistry.instance().renderersList(), ["singleSymbol"])
# add some renderers
r1 = TestRenderer("test1", QgsRendererAbstractMetadata.PointLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r1))
r2 = TestRenderer("test2", QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r2))
r3 = TestRenderer("test3", QgsRendererAbstractMetadata.PolygonLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r3))
r4 = TestRenderer("test4", QgsRendererAbstractMetadata.PointLayer | QgsRendererAbstractMetadata.LineLayer)
self.assertTrue(QgsRendererRegistry.instance().addRenderer(r4))
self.assertEqual(
QgsRendererRegistry.instance().renderersList(), ["singleSymbol", "test1", "test2", "test3", "test4"]
)
# test subsets
self.assertEqual(
QgsRendererRegistry.instance().renderersList(QgsRendererAbstractMetadata.PointLayer),
["singleSymbol", "test1", "test4"],
)
self.assertEqual(
QgsRendererRegistry.instance().renderersList(QgsRendererAbstractMetadata.LineLayer),
["singleSymbol", "test2", "test4"],
)
self.assertEqual(
QgsRendererRegistry.instance().renderersList(QgsRendererAbstractMetadata.PolygonLayer),
["singleSymbol", "test3"],
)
self.assertEqual(
QgsRendererRegistry.instance().renderersList(
QgsRendererAbstractMetadata.LineLayer | QgsRendererAbstractMetadata.PolygonLayer
),
["singleSymbol", "test2", "test3", "test4"],
)
def testRemoveRenderer(self):
""" test removing renderers from registry """
clearRegistry()
# try removing non-existant renderer
self.assertFalse(QgsRendererRegistry.instance().removeRenderer('test3'))
# now add it
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test3')))
self.assertTrue('test3' in QgsRendererRegistry.instance().renderersList())
# try removing it again - should be ok this time
self.assertTrue(QgsRendererRegistry.instance().removeRenderer('test3'))
self.assertFalse('test3' in QgsRendererRegistry.instance().renderersList())
# try removing it again - should be false since already removed
self.assertFalse(QgsRendererRegistry.instance().removeRenderer('test3'))
def testRemoveRenderer(self):
""" test removing renderers from registry """
clearRegistry()
# try removing non-existant renderer
self.assertFalse(QgsRendererRegistry.instance().removeRenderer('test3'))
# now add it
self.assertTrue(QgsRendererRegistry.instance().addRenderer(TestRenderer('test3')))
self.assertTrue('test3' in QgsRendererRegistry.instance().renderersList())
# try removing it again - should be ok this time
self.assertTrue(QgsRendererRegistry.instance().removeRenderer('test3'))
self.assertFalse('test3' in QgsRendererRegistry.instance().renderersList())
# try removing it again - should be false since already removed
self.assertFalse(QgsRendererRegistry.instance().removeRenderer('test3'))
def clearRegistry():
# clear registry to start with
for r in QgsRendererRegistry.instance().renderersList():
if r == 'singleSymbol':
continue
QgsRendererRegistry.instance().removeRenderer(r)
def clearRegistry():
# clear registry to start with
for r in QgsRendererRegistry.instance().renderersList():
if r == 'singleSymbol':
continue
QgsRendererRegistry.instance().removeRenderer(r)
