def _getSymbolWidth(self, context, width, unit): scale = 1.0 if unit == QgsSymbolV2.MapUnit: scale = QgsSymbolLayerV2Utils.lineWidthScaleFactor( context, QgsSymbolV2.MM) / QgsSymbolLayerV2Utils.lineWidthScaleFactor(context, QgsSymbolV2.MapUnit) width = max(width + 2 * self._buffer * scale, self._minWidth * scale) return width
def _getSymbolWidth(self, context, width, unit): scale = 1.0 if unit == QgsSymbolV2.MapUnit: scale = QgsSymbolLayerV2Utils.lineWidthScaleFactor( context, QgsSymbolV2.MM) / QgsSymbolLayerV2Utils.lineWidthScaleFactor( context, QgsSymbolV2.MapUnit) width = max(width + 2 * self._buffer * scale, self._minWidth * scale) return width
def testLineWidthScaleFactor(self): #test QgsSymbolLayerV2Utils::lineWidthScaleFactor() 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() sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 0.5, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5) #minimum scale greater than the renderer scale, so should be limited to minScale c.minScale = 1 / 150000000.0 sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 3.89250455, places=5) #only conversion from mapunits should be affected sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5) c.minScale = 0 #maximum scale less than the renderer scale, so should be limited to maxScale c.maxScale = 1 / 350000000.0 sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 0.5, places=5) #only conversion from mapunits should be affected sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor( r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5)
def testLineWidthScaleFactor(self): # test QgsSymbolLayerV2Utils::lineWidthScaleFactor() 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() sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 0.5, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5) # minimum scale greater than the renderer scale, so should be limited to minScale c.minScale = 1 / 150000000.0 sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 3.89250455, places=5) # only conversion from mapunits should be affected sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5) c.minScale = 0 # maximum scale less than the renderer scale, so should be limited to maxScale c.maxScale = 1 / 350000000.0 sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MapUnit, c) self.assertAlmostEqual(sf, 0.5, places=5) # only conversion from mapunits should be affected sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.MM, c) self.assertAlmostEqual(sf, 11.8110236, places=5) sf = QgsSymbolLayerV2Utils.lineWidthScaleFactor(r, QgsSymbolV2.Pixel, c) self.assertAlmostEqual(sf, 1.0, places=5)