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Python core.QgsComposerLegend类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Python中qgis.core.QgsComposerLegend类的典型用法代码示例。如果您正苦于以下问题：Python QgsComposerLegend类的具体用法？Python QgsComposerLegend怎么用？Python QgsComposerLegend使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



在下文中一共展示了QgsComposerLegend类的5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，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: legend_test

    def legend_test(self):
        self.mAtlasMap.setAtlasDriven(True)
        self.mAtlasMap.setAtlasScalingMode(QgsComposerMap.Auto)
        self.mAtlasMap.setAtlasMargin(0.10)

        # add a point layer
        ptLayer = QgsVectorLayer("Point?crs=epsg:4326&field=attr:int(1)&field=label:string(20)", "points", "memory")

        pr = ptLayer.dataProvider()
        f1 = QgsFeature(1)
        f1.initAttributes(2)
        f1.setAttribute(0, 1)
        f1.setAttribute(1, "Test label 1")
        f1.setGeometry(QgsGeometry.fromPoint(QgsPointXY(-0.638, 48.954)))
        f2 = QgsFeature(2)
        f2.initAttributes(2)
        f2.setAttribute(0, 2)
        f2.setAttribute(1, "Test label 2")
        f2.setGeometry(QgsGeometry.fromPoint(QgsPointXY(-1.682, 48.550)))
        pr.addFeatures([f1, f2])

        # categorized symbology
        r = QgsCategorizedSymbolRenderer("attr", [QgsRendererCategory(1, QgsMarkerSymbol.createSimple({"color": "255,0,0"}), "red"),
                                                  QgsRendererCategory(2, QgsMarkerSymbol.createSimple({"color": "0,0,255"}), "blue")])
        ptLayer.setRenderer(r)

        QgsProject.instance().addMapLayer(ptLayer)

        # add the point layer to the map settings
        layers = self.layers
        layers = [ptLayer] + layers
        self.mAtlasMap.setLayers(layers)
        self.mOverview.setLayers(layers)

        # add a legend
        legend = QgsComposerLegend(self.mComposition)
        legend.moveBy(200, 100)
        # sets the legend filter parameter
        legend.setComposerMap(self.mAtlasMap)
        legend.setLegendFilterOutAtlas(True)
        self.mComposition.addComposerLegend(legend)

        self.mAtlas.beginRender()

        self.mAtlas.prepareForFeature(0)
        self.mLabel1.adjustSizeToText()

        checker = QgsCompositionChecker('atlas_legend', self.mComposition)
        myTestResult, myMessage = checker.testComposition()
        assert myTestResult

        self.mAtlas.endRender()

        # restore state
        self.mAtlasMap.setLayers([layers[1]])
        self.mComposition.removeComposerItem(legend)
        QgsProject.instance().removeMapLayer(ptLayer.id())
开发者ID:ndavid，项目名称:QGIS，代码行数:57，代码来源:test_qgsatlascomposition.py


示例2: testDataDefinedColumnCount

    def testDataDefinedColumnCount(self):
        mapSettings = QgsMapSettings()  # NOQA

        composition = QgsComposition(QgsProject.instance())
        composition.setPaperSize(297, 210)

        legend = QgsComposerLegend(composition)
        composition.addComposerLegend(legend)

        legend.setColumnCount(2)
        self.assertEqual(legend.columnCount(), 2)
        self.assertEqual(legend.legendSettings().columnCount(), 2)

        legend.dataDefinedProperties().setProperty(QgsComposerObject.LegendColumnCount, QgsProperty.fromExpression("5"))
        legend.refreshDataDefinedProperty()
        self.assertEqual(legend.columnCount(), 2)
        self.assertEqual(legend.legendSettings().columnCount(), 5)
开发者ID:rskelly，项目名称:QGIS，代码行数:17，代码来源:test_qgscomposerlegend.py


示例3: testDataDefinedTitle

    def testDataDefinedTitle(self):
        mapSettings = QgsMapSettings()  # NOQA

        composition = QgsComposition(QgsProject.instance())
        composition.setPaperSize(297, 210)

        legend = QgsComposerLegend(composition)
        composition.addComposerLegend(legend)

        legend.setTitle('original')
        self.assertEqual(legend.title(), 'original')
        self.assertEqual(legend.legendSettings().title(), 'original')

        legend.dataDefinedProperties().setProperty(QgsComposerObject.LegendTitle, QgsProperty.fromExpression("'new'"))
        legend.refreshDataDefinedProperty()
        self.assertEqual(legend.title(), 'original')
        self.assertEqual(legend.legendSettings().title(), 'new')
开发者ID:rskelly，项目名称:QGIS，代码行数:17，代码来源:test_qgscomposerlegend.py


示例4: testResizeDisabledCrop

    def testResizeDisabledCrop(self):
        """Test that if legend resizing is disabled, and legend is too small, then content is cropped"""

        point_path = os.path.join(TEST_DATA_DIR, 'points.shp')
        point_layer = QgsVectorLayer(point_path, 'points', 'ogr')
        QgsProject.instance().addMapLayers([point_layer])

        s = QgsMapSettings()
        s.setLayers([point_layer])
        composition = QgsComposition(QgsProject.instance())
        composition.setPaperSize(297, 210)

        composer_map = QgsComposerMap(composition, 20, 20, 80, 80)
        composer_map.setFrameEnabled(True)
        composer_map.setLayers([point_layer])
        composition.addComposerMap(composer_map)
        composer_map.setNewExtent(point_layer.extent())

        legend = QgsComposerLegend(composition)
        legend.setSceneRect(QRectF(120, 20, 20, 20))
        legend.setFrameEnabled(True)
        legend.setFrameStrokeWidth(2)
        legend.setBackgroundColor(QColor(200, 200, 200))
        legend.setTitle('')
        legend.setLegendFilterByMapEnabled(True)

        # disable auto resizing
        legend.setResizeToContents(False)

        composition.addComposerLegend(legend)
        legend.setComposerMap(composer_map)

        composer_map.setNewExtent(QgsRectangle(-102.51, 41.16, -102.36, 41.30))

        checker = QgsCompositionChecker(
            'composer_legend_noresize_crop', composition)
        checker.setControlPathPrefix("composer_legend")
        result, message = checker.testComposition()
        self.assertTrue(result, message)

        QgsProject.instance().removeMapLayers([point_layer.id()])
开发者ID:rskelly，项目名称:QGIS，代码行数:41，代码来源:test_qgscomposerlegend.py


示例5: testResizeDisabled

    def testResizeDisabled(self):
        """Test that test legend does not resize if auto size is disabled"""

        point_path = os.path.join(TEST_DATA_DIR, "points.shp")
        point_layer = QgsVectorLayer(point_path, "points", "ogr")
        QgsProject.instance().addMapLayers([point_layer])

        s = QgsMapSettings()
        s.setLayers([point_layer])
        s.setCrsTransformEnabled(False)
        composition = QgsComposition(s, QgsProject.instance())
        composition.setPaperSize(297, 210)

        composer_map = QgsComposerMap(composition, 20, 20, 80, 80)
        composer_map.setFrameEnabled(True)
        composition.addComposerMap(composer_map)
        composer_map.setNewExtent(point_layer.extent())

        legend = QgsComposerLegend(composition)
        legend.setSceneRect(QRectF(120, 20, 80, 80))
        legend.setFrameEnabled(True)
        legend.setFrameOutlineWidth(2)
        legend.setBackgroundColor(QColor(200, 200, 200))
        legend.setTitle("")
        legend.setLegendFilterByMapEnabled(True)

        # disable auto resizing
        legend.setResizeToContents(False)

        composition.addComposerLegend(legend)
        legend.setComposerMap(composer_map)

        composer_map.setNewExtent(QgsRectangle(-102.51, 41.16, -102.36, 41.30))

        checker = QgsCompositionChecker("composer_legend_noresize", composition)
        checker.setControlPathPrefix("composer_legend")
        result, message = checker.testComposition()
        self.assertTrue(result, message)

        QgsProject.instance().removeMapLayers([point_layer.id()])
开发者ID:kalxas，项目名称:QGIS，代码行数:40，代码来源:test_qgscomposerlegend.py



注：本文中的qgis.core.QgsComposerLegend类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，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。

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