本文整理匯總了Python中qgis.core.QgsSymbolLayerV2Utils.convertToPainterUnits方法的典型用法代碼示例。如果您正苦於以下問題：Python QgsSymbolLayerV2Utils.convertToPainterUnits方法的具體用法？Python QgsSymbolLayerV2Utils.convertToPainterUnits怎麽用？Python QgsSymbolLayerV2Utils.convertToPainterUnits使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類qgis.core.QgsSymbolLayerV2Utils的用法示例。
在下文中一共展示了QgsSymbolLayerV2Utils.convertToPainterUnits方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: testConvertToPainterUnits
# 需要導入模塊: from qgis.core import QgsSymbolLayerV2Utils [as 別名]
# 或者: from qgis.core.QgsSymbolLayerV2Utils import convertToPainterUnits [as 別名]
def testConvertToPainterUnits(self):
# test QgsSymbolLayerV2Utils::convertToPainterUnits() using QgsMapUnitScale
ms = QgsMapSettings()
ms.setExtent(QgsRectangle(0, 0, 100, 100))
ms.setOutputSize(QSize(100, 50))
ms.setOutputDpi(300)
r = QgsRenderContext.fromMapSettings(ms)
# renderer scale should be about 1:291937841
# start with no min/max scale
c = QgsMapUnitScale()
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 1.0, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)
# minimum size greater than the calculated size, so size should be limited to minSizeMM
c.minSizeMM = 5
c.minSizeMMEnabled = True
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 59.0551181, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)
c.minSizeMMEnabled = False
# maximum size less than the calculated size, so size should be limited to maxSizeMM
c.maxSizeMM = 0.1
c.maxSizeMMEnabled = True
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 1.0, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)