本文整理汇总了Python中qgis.core.QgsLayoutItemLabel.setBlendMode方法的典型用法代码示例。如果您正苦于以下问题：Python QgsLayoutItemLabel.setBlendMode方法的具体用法？Python QgsLayoutItemLabel.setBlendMode怎么用？Python QgsLayoutItemLabel.setBlendMode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.QgsLayoutItemLabel的用法示例。
在下文中一共展示了QgsLayoutItemLabel.setBlendMode方法的1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: testContainsAdvancedEffectsAndRasterization
# 需要导入模块: from qgis.core import QgsLayoutItemLabel [as 别名]
# 或者: from qgis.core.QgsLayoutItemLabel import setBlendMode [as 别名]
def testContainsAdvancedEffectsAndRasterization(self):
layout = QgsLayout(QgsProject.instance())
item = QgsLayoutItemLabel(layout)
self.assertFalse(item.containsAdvancedEffects())
# item opacity requires that the individual item be flattened to a raster item
item.setItemOpacity(0.5)
self.assertTrue(item.containsAdvancedEffects())
# but not the WHOLE layout
self.assertFalse(item.requiresRasterization())
item.dataDefinedProperties().setProperty(QgsLayoutObject.Opacity, QgsProperty.fromExpression('100'))
item.refresh()
self.assertFalse(item.containsAdvancedEffects())
self.assertFalse(item.requiresRasterization())
item.dataDefinedProperties().setProperty(QgsLayoutObject.Opacity, QgsProperty())
item.refresh()
self.assertTrue(item.containsAdvancedEffects())
self.assertFalse(item.requiresRasterization())
item.setItemOpacity(1.0)
self.assertFalse(item.containsAdvancedEffects())
self.assertFalse(item.requiresRasterization())
# item blend mode is NOT an advanced effect -- rather it requires that the WHOLE layout be rasterized to achieve
item.setBlendMode(QPainter.CompositionMode_DestinationAtop)
self.assertFalse(item.containsAdvancedEffects())
self.assertTrue(item.requiresRasterization())
map = QgsLayoutItemMap(layout)
# map items are different -- because they override paint, they don't get the auto-flattening and rasterization
map.setItemOpacity(0.5)
self.assertFalse(map.containsAdvancedEffects())
# rather, a map with opacity requires the WHOLE layout to be rasterized
self.assertTrue(map.requiresRasterization())
map.dataDefinedProperties().setProperty(QgsLayoutObject.Opacity, QgsProperty.fromExpression('100'))
map.refresh()
self.assertFalse(map.containsAdvancedEffects())
self.assertTrue(map.requiresRasterization())