Python QgsLayoutItemMap.zoomToExtent方法代码示例

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def addParcelleMap(self):
        '''
        Add content in the first page
        with a map and basic information
        '''
        # First add headers
        for key, item in list(self.composerTemplates.items()):
            if 'sticky' in item:
                self.buildComposerLabel(key, item, 0)

        # Get feature extent
        exp = QgsExpression('"geo_parcelle" = \'%s\'' % self.geo_parcelle)
        request = QgsFeatureRequest(exp)
        extent = None
        features = self.layer.getFeatures(request)
        for feature in features:
            geom = feature.geometry()
            peri = geom.length()
            buf = peri / 20
            extent = geom.buffer(buf,5).boundingBox()

        # Add memory layer to highlight parcelle
        if extent:
            if self.redlineLayer:
                self.mProject.removeMapLayer(self.redlineLayer.id())
            crs = self.layer.crs().authid()
            vl = QgsVectorLayer("Polygon?crs=" + crs, "temporary", "memory")
            pr = vl.dataProvider()
            vl.startEditing()
            pr.addFeatures([f for f in self.layer.getFeatures(request)])
            vl.commitChanges()
            vl.updateExtents()
            props = vl.renderer().symbol().symbolLayer(0).properties()
            props['outline_width'] = u'1'
            props['outline_color'] = u'0,85,255,255'
            props['outline_style'] = u'solid'
            props['style'] = u'no'
            vl.renderer().setSymbol(QgsFillSymbol.createSimple(props))
            self.mProject.addMapLayer(vl)
            self.redlineLayer = vl

        # Add composer map & to parcelle
        miLayers = self.mInstance.layers()
        miLayers.insert( 0, vl )
        cm = QgsLayoutItemMap(self.currentComposition)
        cm.updateBoundingRect()
        cm.setRect(QRectF(0, 0, 286, 190))
        cm.setPos(6,15)
        cm.setLayers(self.mProject.mapThemeCollection().masterVisibleLayers())

        if extent:
            cm.zoomToExtent(extent)

        cm.setFrameEnabled(True)
        cm.setBackgroundEnabled(True)
        self.currentComposition.addItem(cm)

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def testMapCrs(self):
        # create layout with layout map
        map_settings = QgsMapSettings()
        map_settings.setLayers([self.vector_layer])
        layout = QgsLayout(QgsProject.instance())
        layout.initializeDefaults()

        # check that new maps inherit project CRS
        QgsProject.instance().setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
        map = QgsLayoutItemMap(layout)
        map.attemptSetSceneRect(QRectF(20, 20, 200, 100))
        map.setFrameEnabled(True)
        rectangle = QgsRectangle(-13838977, 2369660, -8672298, 6250909)
        map.setExtent(rectangle)
        map.setLayers([self.vector_layer])
        layout.addLayoutItem(map)

        self.assertEqual(map.crs().authid(), 'EPSG:4326')
        self.assertFalse(map.presetCrs().isValid())

        # overwrite CRS
        map.setCrs(QgsCoordinateReferenceSystem('EPSG:3857'))
        self.assertEqual(map.crs().authid(), 'EPSG:3857')
        self.assertEqual(map.presetCrs().authid(), 'EPSG:3857')

        checker = QgsLayoutChecker('composermap_crs3857', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        # overwrite CRS
        map.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
        self.assertEqual(map.presetCrs().authid(), 'EPSG:4326')
        self.assertEqual(map.crs().authid(), 'EPSG:4326')
        rectangle = QgsRectangle(-124, 17, -78, 52)
        map.zoomToExtent(rectangle)
        checker = QgsLayoutChecker('composermap_crs4326', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        # change back to project CRS
        map.setCrs(QgsCoordinateReferenceSystem())
        self.assertEqual(map.crs().authid(), 'EPSG:4326')
        self.assertFalse(map.presetCrs().isValid())

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def testExportToSvgTextRenderFormat(self):
        l = QgsLayout(QgsProject.instance())
        l.initializeDefaults()

        # add a map and scalebar
        mapitem = QgsLayoutItemMap(l)
        mapitem.attemptSetSceneRect(QRectF(110, 120, 200, 250))
        mapitem.zoomToExtent(QgsRectangle(1, 1, 10, 10))
        mapitem.setScale(666)  # unlikely to appear in the SVG by accident... unless... oh no! RUN!
        l.addItem(mapitem)

        item1 = QgsLayoutItemScaleBar(l)
        item1.attemptSetSceneRect(QRectF(10, 20, 100, 150))
        item1.setLinkedMap(mapitem)
        item1.setStyle('Numeric')
        l.addItem(item1)

        exporter = QgsLayoutExporter(l)
        # setup settings
        settings = QgsLayoutExporter.SvgExportSettings()
        settings.dpi = 80
        settings.forceVectorOutput = False
        settings.exportMetadata = True
        settings.textRenderFormat = QgsRenderContext.TextFormatAlwaysText

        svg_file_path = os.path.join(self.basetestpath, 'test_exporttosvgtextformattext.svg')
        self.assertEqual(exporter.exportToSvg(svg_file_path, settings), QgsLayoutExporter.Success)
        self.assertTrue(os.path.exists(svg_file_path))

        # expect svg to contain a text object with the scale
        with open(svg_file_path, 'r') as f:
            lines = ''.join(f.readlines())
        self.assertIn('<text', lines)
        self.assertIn('>1:666<', lines)

        # force use of outlines
        os.unlink(svg_file_path)
        settings.textRenderFormat = QgsRenderContext.TextFormatAlwaysOutlines
        self.assertEqual(exporter.exportToSvg(svg_file_path, settings), QgsLayoutExporter.Success)
        self.assertTrue(os.path.exists(svg_file_path))

        # expect svg NOT to contain a text object with the scale
        with open(svg_file_path, 'r') as f:
            lines = ''.join(f.readlines())
        self.assertNotIn('<text', lines)
        self.assertNotIn('>1:666<', lines)

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def testBlockingItems(self):
        """
        Test rendering map item with blocking items
        """
        format = QgsTextFormat()
        format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
        format.setSize(20)
        format.setNamedStyle("Bold")
        format.setColor(QColor(0, 0, 0))
        settings = QgsPalLayerSettings()
        settings.setFormat(format)
        settings.fieldName = "'X'"
        settings.isExpression = True
        settings.placement = QgsPalLayerSettings.OverPoint

        vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
        vl.setRenderer(QgsNullSymbolRenderer())
        f = QgsFeature(vl.fields(), 1)
        for x in range(15):
            for y in range(15):
                f.setGeometry(QgsPoint(x, y))
                vl.dataProvider().addFeature(f)

        vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
        vl.setLabelsEnabled(True)

        p = QgsProject()

        engine_settings = QgsLabelingEngineSettings()
        engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
        p.setLabelingEngineSettings(engine_settings)

        p.addMapLayer(vl)
        layout = QgsLayout(p)
        layout.initializeDefaults()
        p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
        map = QgsLayoutItemMap(layout)
        map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
        map.setFrameEnabled(True)
        map.zoomToExtent(vl.extent())
        map.setLayers([vl])
        map.setId('map')
        layout.addLayoutItem(map)

        map2 = QgsLayoutItemMap(layout)
        map2.attemptSetSceneRect(QRectF(0, 5, 50, 80))
        map2.setFrameEnabled(True)
        map2.setBackgroundEnabled(False)
        map2.setId('map2')
        layout.addLayoutItem(map2)

        map3 = QgsLayoutItemMap(layout)
        map3.attemptSetSceneRect(QRectF(150, 160, 50, 50))
        map3.setFrameEnabled(True)
        map3.setBackgroundEnabled(False)
        map3.setId('map3')
        layout.addLayoutItem(map3)

        map.addLabelBlockingItem(map2)
        map.addLabelBlockingItem(map3)
        map.setMapFlags(QgsLayoutItemMap.MapItemFlags())
        checker = QgsLayoutChecker('composermap_label_blockers', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        doc = QDomDocument("testdoc")
        elem = layout.writeXml(doc, QgsReadWriteContext())

        l2 = QgsLayout(p)
        self.assertTrue(l2.readXml(elem, doc, QgsReadWriteContext()))
        map_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map'][0]
        map2_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map2'][0]
        map3_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map3'][0]
        self.assertTrue(map_restore.isLabelBlockingItem(map2_restore))
        self.assertTrue(map_restore.isLabelBlockingItem(map3_restore))

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def testPartialLabels(self):
        """
        Test rendering map item with a show partial labels flag
        """
        format = QgsTextFormat()
        format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
        format.setSize(20)
        format.setNamedStyle("Bold")
        format.setColor(QColor(0, 0, 0))
        settings = QgsPalLayerSettings()
        settings.setFormat(format)
        settings.fieldName = "'X'"
        settings.isExpression = True
        settings.placement = QgsPalLayerSettings.OverPoint

        vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
        vl.setRenderer(QgsNullSymbolRenderer())
        f = QgsFeature(vl.fields(), 1)
        for x in range(15):
            for y in range(15):
                f.setGeometry(QgsPoint(x, y))
                vl.dataProvider().addFeature(f)

        vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
        vl.setLabelsEnabled(True)

        p = QgsProject()

        engine_settings = QgsLabelingEngineSettings()
        engine_settings.setFlag(QgsLabelingEngineSettings.UsePartialCandidates, False)
        engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
        p.setLabelingEngineSettings(engine_settings)

        p.addMapLayer(vl)
        layout = QgsLayout(p)
        layout.initializeDefaults()
        p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
        map = QgsLayoutItemMap(layout)
        map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
        map.setFrameEnabled(True)
        map.zoomToExtent(vl.extent())
        map.setLayers([vl])
        layout.addLayoutItem(map)

        # default should always be to hide partial labels
        self.assertFalse(map.mapFlags() & QgsLayoutItemMap.ShowPartialLabels)

        # hiding partial labels (the default)
        map.setMapFlags(QgsLayoutItemMap.MapItemFlags())
        checker = QgsLayoutChecker('composermap_label_nomargin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        # showing partial labels
        map.setMapFlags(QgsLayoutItemMap.ShowPartialLabels)
        checker = QgsLayoutChecker('composermap_show_partial_labels', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import zoomToExtent [as 别名]
    def testLabelMargin(self):
        """
        Test rendering map item with a label margin set
        """
        format = QgsTextFormat()
        format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
        format.setSize(20)
        format.setNamedStyle("Bold")
        format.setColor(QColor(0, 0, 0))
        settings = QgsPalLayerSettings()
        settings.setFormat(format)
        settings.fieldName = "'X'"
        settings.isExpression = True
        settings.placement = QgsPalLayerSettings.OverPoint

        vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
        vl.setRenderer(QgsNullSymbolRenderer())
        f = QgsFeature(vl.fields(), 1)
        for x in range(15):
            for y in range(15):
                f.setGeometry(QgsPoint(x, y))
                vl.dataProvider().addFeature(f)

        vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
        vl.setLabelsEnabled(True)

        p = QgsProject()

        engine_settings = QgsLabelingEngineSettings()
        engine_settings.setFlag(QgsLabelingEngineSettings.UsePartialCandidates, False)
        engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
        p.setLabelingEngineSettings(engine_settings)

        p.addMapLayer(vl)
        layout = QgsLayout(p)
        layout.initializeDefaults()
        p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
        map = QgsLayoutItemMap(layout)
        map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
        map.setFrameEnabled(True)
        map.zoomToExtent(vl.extent())
        map.setLayers([vl])
        layout.addLayoutItem(map)

        checker = QgsLayoutChecker('composermap_label_nomargin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        map.setLabelMargin(QgsLayoutMeasurement(15, QgsUnitTypes.LayoutMillimeters))
        checker = QgsLayoutChecker('composermap_label_margin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        map.setLabelMargin(QgsLayoutMeasurement(3, QgsUnitTypes.LayoutCentimeters))
        checker = QgsLayoutChecker('composermap_label_cm_margin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        map.setMapRotation(45)
        map.zoomToExtent(vl.extent())
        map.setScale(map.scale() * 1.2)
        checker = QgsLayoutChecker('composermap_rotated_label_margin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)

        # data defined
        map.setMapRotation(0)
        map.zoomToExtent(vl.extent())
        map.dataDefinedProperties().setProperty(QgsLayoutObject.MapLabelMargin, QgsProperty.fromExpression('1+3'))
        map.refresh()
        checker = QgsLayoutChecker('composermap_dd_label_margin', layout)
        checker.setControlPathPrefix("composer_map")
        result, message = checker.testLayout()
        self.report += checker.report()
        self.assertTrue(result, message)