本文整理汇总了Python中qgis.core.QgsLayoutItemMap.zoomToExtent方法的典型用法代码示例。如果您正苦于以下问题:Python QgsLayoutItemMap.zoomToExtent方法的具体用法?Python QgsLayoutItemMap.zoomToExtent怎么用?Python QgsLayoutItemMap.zoomToExtent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.QgsLayoutItemMap
的用法示例。
在下文中一共展示了QgsLayoutItemMap.zoomToExtent方法的6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: addParcelleMap
# 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)
示例2: testMapCrs
# 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())
示例3: testExportToSvgTextRenderFormat
# 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)
示例4: testBlockingItems
# 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))
示例5: testPartialLabels
# 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)
示例6: testLabelMargin
# 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)