本文整理汇总了Python中qgis.core.QgsMapLayerStore.removeAllMapLayers方法的典型用法代码示例。如果您正苦于以下问题:Python QgsMapLayerStore.removeAllMapLayers方法的具体用法?Python QgsMapLayerStore.removeAllMapLayers怎么用?Python QgsMapLayerStore.removeAllMapLayers使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsMapLayerStore
的用法示例。
在下文中一共展示了QgsMapLayerStore.removeAllMapLayers方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_removeAllMapLayers
# 需要导入模块: from qgis.core import QgsMapLayerStore [as 别名]
# 或者: from qgis.core.QgsMapLayerStore import removeAllMapLayers [as 别名]
def test_removeAllMapLayers(self):
""" test removing all map layers from store """
store = QgsMapLayerStore()
l1 = createLayer('test')
l2 = createLayer('test2')
store.addMapLayers([l1, l2])
self.assertEqual(store.count(), 2)
store.removeAllMapLayers()
self.assertEqual(store.count(), 0)
self.assertEqual(store.mapLayersByName('test'), [])
self.assertEqual(store.mapLayersByName('test2'), [])
示例2: test_addMapLayers
# 需要导入模块: from qgis.core import QgsMapLayerStore [as 别名]
# 或者: from qgis.core.QgsMapLayerStore import removeAllMapLayers [as 别名]
def test_addMapLayers(self):
""" test adding multiple map layers to store """
store = QgsMapLayerStore()
l1 = createLayer('test')
l2 = createLayer('test2')
self.assertEqual(set(store.addMapLayers([l1, l2])), {l1, l2})
self.assertEqual(len(store.mapLayersByName('test')), 1)
self.assertEqual(len(store.mapLayersByName('test2')), 1)
self.assertEqual(store.count(), 2)
# adding more layers should leave existing layers intact
l3 = createLayer('test3')
l4 = createLayer('test4')
self.assertEqual(set(store.addMapLayers([l3, l4])), {l3, l4})
self.assertEqual(len(store.mapLayersByName('test')), 1)
self.assertEqual(len(store.mapLayersByName('test2')), 1)
self.assertEqual(len(store.mapLayersByName('test3')), 1)
self.assertEqual(len(store.mapLayersByName('test4')), 1)
self.assertEqual(store.count(), 4)
store.removeAllMapLayers()
示例3: test_addRemoveLayersSignals
# 需要导入模块: from qgis.core import QgsMapLayerStore [as 别名]
# 或者: from qgis.core.QgsMapLayerStore import removeAllMapLayers [as 别名]
def test_addRemoveLayersSignals(self):
""" test that signals are correctly emitted when removing map layers"""
store = QgsMapLayerStore()
layers_will_be_removed_spy = QSignalSpy(store.layersWillBeRemoved)
layer_will_be_removed_spy_str = QSignalSpy(store.layerWillBeRemoved[str])
layer_will_be_removed_spy_layer = QSignalSpy(store.layerWillBeRemoved[QgsMapLayer])
layers_removed_spy = QSignalSpy(store.layersRemoved)
layer_removed_spy = QSignalSpy(store.layerRemoved)
remove_all_spy = QSignalSpy(store.allLayersRemoved)
l1 = createLayer('l1')
l2 = createLayer('l2')
l3 = createLayer('l3')
l4 = createLayer('l4')
store.addMapLayers([l1, l2, l3, l4])
# remove 1 layer
store.removeMapLayer(l1)
# can't seem to actually test the data which was emitted, so best we can do is test
# the signal count
self.assertEqual(len(layers_will_be_removed_spy), 1)
self.assertEqual(len(layer_will_be_removed_spy_str), 1)
self.assertEqual(len(layer_will_be_removed_spy_layer), 1)
self.assertEqual(len(layers_removed_spy), 1)
self.assertEqual(len(layer_removed_spy), 1)
self.assertEqual(len(remove_all_spy), 0)
self.assertEqual(store.count(), 3)
# remove 2 layers at once
store.removeMapLayersById([l2.id(), l3.id()])
self.assertEqual(len(layers_will_be_removed_spy), 2)
self.assertEqual(len(layer_will_be_removed_spy_str), 3)
self.assertEqual(len(layer_will_be_removed_spy_layer), 3)
self.assertEqual(len(layers_removed_spy), 2)
self.assertEqual(len(layer_removed_spy), 3)
self.assertEqual(len(remove_all_spy), 0)
self.assertEqual(store.count(), 1)
# remove all
store.removeAllMapLayers()
self.assertEqual(len(layers_will_be_removed_spy), 3)
self.assertEqual(len(layer_will_be_removed_spy_str), 4)
self.assertEqual(len(layer_will_be_removed_spy_layer), 4)
self.assertEqual(len(layers_removed_spy), 3)
self.assertEqual(len(layer_removed_spy), 4)
self.assertEqual(len(remove_all_spy), 1)
#remove some layers which aren't in the store
store.removeMapLayersById(['asdasd'])
self.assertEqual(len(layers_will_be_removed_spy), 3)
self.assertEqual(len(layer_will_be_removed_spy_str), 4)
self.assertEqual(len(layer_will_be_removed_spy_layer), 4)
self.assertEqual(len(layers_removed_spy), 3)
self.assertEqual(len(layer_removed_spy), 4)
self.assertEqual(len(remove_all_spy), 1)
l5 = createLayer('test5')
store.removeMapLayer(l5)
self.assertEqual(len(layers_will_be_removed_spy), 3)
self.assertEqual(len(layer_will_be_removed_spy_str), 4)
self.assertEqual(len(layer_will_be_removed_spy_layer), 4)
self.assertEqual(len(layers_removed_spy), 3)
self.assertEqual(len(layer_removed_spy), 4)
self.assertEqual(len(remove_all_spy), 1)