本文整理汇总了Python中qgis.core.QgsPalLayerSettings.dataDefinedProperties方法的典型用法代码示例。如果您正苦于以下问题：Python QgsPalLayerSettings.dataDefinedProperties方法的具体用法？Python QgsPalLayerSettings.dataDefinedProperties怎么用？Python QgsPalLayerSettings.dataDefinedProperties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.QgsPalLayerSettings的用法示例。
在下文中一共展示了QgsPalLayerSettings.dataDefinedProperties方法的2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: remove_mask_filter
# 需要导入模块: from qgis.core import QgsPalLayerSettings [as 别名]
# 或者: from qgis.core.QgsPalLayerSettings import dataDefinedProperties [as 别名]
def remove_mask_filter(layer):
if not isinstance(layer, QgsVectorLayer):
return False
# check if a layer has already a mask filter enabled
if layer.labeling() is None:
return False
settings = layer.labeling().settings()
try:
if settings.dataDefinedProperties().hasProperty(QgsPalLayerSettings.Show) and \
settings.dataDefinedProperties().property(QgsPalLayerSettings.Show).expressionString().startswith(SPATIAL_FILTER):
# new settings
settings = QgsPalLayerSettings(layer.labeling().settings())
settings.dataDefinedProperties().setProperty(QgsPalLayerSettings.Show, True)
if isinstance(layer.labeling(), QgsVectorLayerSimpleLabeling):
layer.setLabeling(QgsVectorLayerSimpleLabeling(settings))
except Exception as e:
for m in e.args:
QgsMessageLog.logMessage(m, 'Extensions')示例2: add_mask_filter
# 需要导入模块: from qgis.core import QgsPalLayerSettings [as 别名]
# 或者: from qgis.core.QgsPalLayerSettings import dataDefinedProperties [as 别名]
def add_mask_filter(layer):
if not isinstance(layer, QgsVectorLayer):
return False
# check if a layer has already a mask filter enabled
if layer.labeling() is None:
return False
try:
expr = "%s(%d)" % (SPATIAL_FILTER, layer.crs().postgisSrid())
prop = QgsProperty()
prop.setExpressionString(expr)
# new settings
settings = QgsPalLayerSettings(layer.labeling().settings())
settings.dataDefinedProperties().setProperty(QgsPalLayerSettings.Show, prop)
if isinstance(layer.labeling(), QgsVectorLayerSimpleLabeling):
layer.setLabeling(QgsVectorLayerSimpleLabeling(settings))
except Exception as e:
for m in e.args:
QgsMessageLog.logMessage(m, 'Extensions')