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Python QgsCategorizedSymbolRenderer.updateCategoryRenderState方法代码示例

本文整理汇总了Python中qgis.core.QgsCategorizedSymbolRenderer.updateCategoryRenderState方法的典型用法代码示例。如果您正苦于以下问题：Python QgsCategorizedSymbolRenderer.updateCategoryRenderState方法的具体用法？Python QgsCategorizedSymbolRenderer.updateCategoryRenderState怎么用？Python QgsCategorizedSymbolRenderer.updateCategoryRenderState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.QgsCategorizedSymbolRenderer的用法示例。


在下文中一共展示了QgsCategorizedSymbolRenderer.updateCategoryRenderState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: testFilter

# 需要导入模块: from qgis.core import QgsCategorizedSymbolRenderer [as 别名]
# 或者: from qgis.core.QgsCategorizedSymbolRenderer import updateCategoryRenderState [as 别名]
    def testFilter(self):
        """Test filter creation"""
        renderer = QgsCategorizedSymbolRenderer()
        renderer.setClassAttribute('field')

        renderer.addCategory(QgsRendererCategory('a', createMarkerSymbol(), 'a'))
        renderer.addCategory(QgsRendererCategory('b', createMarkerSymbol(), 'b'))
        renderer.addCategory(QgsRendererCategory('c', createMarkerSymbol(), 'c'))
        # add default category
        renderer.addCategory(QgsRendererCategory('', createMarkerSymbol(), 'default'))

        fields = QgsFields()
        fields.append(QgsField('field', QVariant.String))
        fields.append(QgsField('num', QVariant.Double))

        self.assertEqual(renderer.filter(fields), '')
        # remove categories, leaving default
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(\"field\") NOT IN ('a') OR (\"field\") IS NULL")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "(\"field\") NOT IN ('a','b') OR (\"field\") IS NULL")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(\"field\") NOT IN ('a','b','c') OR (\"field\") IS NULL")
        # remove default category
        assert renderer.updateCategoryRenderState(3, False)
        self.assertEqual(renderer.filter(fields), "FALSE")
        # add back other categories, leaving default disabled
        assert renderer.updateCategoryRenderState(0, True)
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('a')")
        assert renderer.updateCategoryRenderState(1, True)
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('a','b')")
        assert renderer.updateCategoryRenderState(2, True)
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('a','b','c')")

        renderer.deleteAllCategories()
        # just default category
        renderer.addCategory(QgsRendererCategory('', createMarkerSymbol(), 'default'))
        self.assertEqual(renderer.filter(fields), '')
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), 'FALSE')

        renderer.deleteAllCategories()
        # no default category
        renderer.addCategory(QgsRendererCategory('a', createMarkerSymbol(), 'a'))
        renderer.addCategory(QgsRendererCategory('b', createMarkerSymbol(), 'b'))
        renderer.addCategory(QgsRendererCategory('c', createMarkerSymbol(), 'c'))
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('a','b','c')")
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('b','c')")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(\"field\") IN ('b')")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "FALSE")

        renderer.deleteAllCategories()
        renderer.setClassAttribute('num')
        # numeric categories
        renderer.addCategory(QgsRendererCategory(1, createMarkerSymbol(), 'a'))
        renderer.addCategory(QgsRendererCategory(2, createMarkerSymbol(), 'b'))
        renderer.addCategory(QgsRendererCategory(3, createMarkerSymbol(), 'c'))
        self.assertEqual(renderer.filter(fields), '(\"num\") IN (1,2,3)')
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(\"num\") IN (2,3)")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(\"num\") IN (2)")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "FALSE")
开发者ID:NathanW2，项目名称:QGIS，代码行数:69，代码来源:test_qgscategorizedsymbolrenderer.py

示例2: testFilterExpression

# 需要导入模块: from qgis.core import QgsCategorizedSymbolRenderer [as 别名]
# 或者: from qgis.core.QgsCategorizedSymbolRenderer import updateCategoryRenderState [as 别名]
    def testFilterExpression(self):
        """Test filter creation with expression"""
        renderer = QgsCategorizedSymbolRenderer()
        renderer.setClassAttribute("field + field2")

        renderer.addCategory(QgsRendererCategory("a", createMarkerSymbol(), "a"))
        renderer.addCategory(QgsRendererCategory("b", createMarkerSymbol(), "b"))
        renderer.addCategory(QgsRendererCategory("c", createMarkerSymbol(), "c"))
        # add default category
        renderer.addCategory(QgsRendererCategory("", createMarkerSymbol(), "default"))

        fields = QgsFields()
        fields.append(QgsField("field", QVariant.String))

        self.assertEqual(renderer.filter(fields), "")
        # remove categories, leaving default
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) NOT IN ('a') OR (field + field2) IS NULL")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) NOT IN ('a','b') OR (field + field2) IS NULL")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) NOT IN ('a','b','c') OR (field + field2) IS NULL")
        # remove default category
        assert renderer.updateCategoryRenderState(3, False)
        self.assertEqual(renderer.filter(fields), "FALSE")
        # add back other categories, leaving default disabled
        assert renderer.updateCategoryRenderState(0, True)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('a')")
        assert renderer.updateCategoryRenderState(1, True)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('a','b')")
        assert renderer.updateCategoryRenderState(2, True)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('a','b','c')")

        renderer.deleteAllCategories()
        # just default category
        renderer.addCategory(QgsRendererCategory("", createMarkerSymbol(), "default"))
        self.assertEqual(renderer.filter(fields), "")
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "FALSE")

        renderer.deleteAllCategories()
        # no default category
        renderer.addCategory(QgsRendererCategory("a", createMarkerSymbol(), "a"))
        renderer.addCategory(QgsRendererCategory("b", createMarkerSymbol(), "b"))
        renderer.addCategory(QgsRendererCategory("c", createMarkerSymbol(), "c"))
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('a','b','c')")
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('b','c')")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN ('b')")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "FALSE")

        renderer.deleteAllCategories()
        # numeric categories
        renderer.addCategory(QgsRendererCategory(1, createMarkerSymbol(), "a"))
        renderer.addCategory(QgsRendererCategory(2, createMarkerSymbol(), "b"))
        renderer.addCategory(QgsRendererCategory(3, createMarkerSymbol(), "c"))
        self.assertEqual(renderer.filter(fields), "(field + field2) IN (1,2,3)")
        assert renderer.updateCategoryRenderState(0, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN (2,3)")
        assert renderer.updateCategoryRenderState(2, False)
        self.assertEqual(renderer.filter(fields), "(field + field2) IN (2)")
        assert renderer.updateCategoryRenderState(1, False)
        self.assertEqual(renderer.filter(fields), "FALSE")
开发者ID:ndavid，项目名称:QGIS，代码行数:67，代码来源:test_qgscategorizedsymbolrenderer.py


注：本文中的qgis.core.QgsCategorizedSymbolRenderer.updateCategoryRenderState方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。