本文整理汇总了Python中qgis.core.QgsPalLayerSettings.xOffset方法的典型用法代码示例。如果您正苦于以下问题:Python QgsPalLayerSettings.xOffset方法的具体用法?Python QgsPalLayerSettings.xOffset怎么用?Python QgsPalLayerSettings.xOffset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.QgsPalLayerSettings
的用法示例。
在下文中一共展示了QgsPalLayerSettings.xOffset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: test_AddPALToVectorLayer
# 需要导入模块: from qgis.core import QgsPalLayerSettings [as 别名]
# 或者: from qgis.core.QgsPalLayerSettings import xOffset [as 别名]
def test_AddPALToVectorLayer(self):
"""Check if we can set a label field, verify that PAL is assigned
and that output is rendered correctly"""
# TODO: add UTM PAL-specific shps, with 4326 as on-the-fly cross-check
# setCanvasCrs(26913)
myShpFile = os.path.join(TEST_DATA_DIR, 'lines.shp')
myVectorLayer = QgsVectorLayer(myShpFile, 'Lines', 'ogr')
self._MapRegistry.addMapLayer(myVectorLayer)
myLayers = QStringList()
myLayers.append(myVectorLayer.id())
self._MapRenderer.setLayerSet(myLayers)
self._MapRenderer.setExtent(myVectorLayer.extent())
self._Canvas.zoomToFullExtent()
# check layer labeling is PAL with customProperty access
# should not be activated on layer load
myPalSet = myVectorLayer.customProperty( "labeling" ).toString()
myMessage = '\nExpected: Empty QString\nGot: %s' % (str(myPalSet))
assert str(myPalSet) == '', myMessage
# simulate clicking checkbox, setting label field and clicking apply
self._testFont.setPointSize(20)
myPalLyr = QgsPalLayerSettings()
myPalLyr.enabled = True
myPalLyr.fieldName = 'Name'
myPalLyr.placement = QgsPalLayerSettings.Line
myPalLyr.placementFlags = QgsPalLayerSettings.AboveLine
myPalLyr.xQuadOffset = 0
myPalLyr.yQuadOffset = 0
myPalLyr.xOffset = 0
myPalLyr.yOffset = 0
myPalLyr.angleOffset = 0
myPalLyr.centroidWhole = False
myPalLyr.textFont = self._testFont
myPalLyr.textNamedStyle = QString("Medium")
myPalLyr.textColor = Qt.black
myPalLyr.textTransp = 0
myPalLyr.previewBkgrdColor = Qt.white
myPalLyr.priority = 5
myPalLyr.obstacle = True
myPalLyr.dist = 0
myPalLyr.scaleMin = 0
myPalLyr.scaleMax = 0
myPalLyr.bufferSize = 1
myPalLyr.bufferColor = Qt.white
myPalLyr.bufferTransp = 0
myPalLyr.bufferNoFill = False
myPalLyr.bufferJoinStyle = Qt.RoundJoin
myPalLyr.formatNumbers = False
myPalLyr.decimals = 3
myPalLyr.plusSign = False
myPalLyr.labelPerPart = False
myPalLyr.displayAll = True
myPalLyr.mergeLines = False
myPalLyr.minFeatureSize = 0.0
myPalLyr.vectorScaleFactor = 1.0
myPalLyr.rasterCompressFactor = 1.0
myPalLyr.addDirectionSymbol = False
myPalLyr.upsidedownLabels = QgsPalLayerSettings.Upright
myPalLyr.fontSizeInMapUnits = False
myPalLyr.bufferSizeInMapUnits = False
myPalLyr.labelOffsetInMapUnits = True
myPalLyr.distInMapUnits = False
myPalLyr.wrapChar = ""
myPalLyr.preserveRotation = True
myPalLyr.writeToLayer(myVectorLayer)
# check layer labeling is PAL with customProperty access
myPalSet = myVectorLayer.customProperty( "labeling" ).toString()
myMessage = '\nExpected: pal\nGot: %s' % (str(myPalSet))
assert str(myPalSet) == 'pal', myMessage
# check layer labeling is PAL via engine interface
myMessage = '\nCould not get whether PAL enabled from labelingEngine'
assert self._PalEngine.willUseLayer(myVectorLayer), myMessage
#
myChecker = QgsRenderChecker()
myChecker.setControlName("expected_pal_aboveLineLabeling")
myChecker.setMapRenderer(self._MapRenderer)
myResult = myChecker.runTest("pal_aboveLineLabeling_python");
myMessage = ('\nVector layer \'above line\' label engine '
'rendering test failed')
assert myResult, myMessage
# compare against a straight rendering/save as from QgsMapCanvasMap
# unnecessary? works a bit different than QgsRenderChecker, though
# myImage = os.path.join(unicode(QDir.tempPath()),
# 'render_pal_aboveLineLabeling.png')
# self._Map.render()
# self._Canvas.saveAsImage(myImage)
# myChecker.setRenderedImage(myImage)
# myResult = myChecker.compareImages("pal_aboveLineLabeling_python")
# myMessage = ('\nVector layer \'above line\' label engine '
#.........这里部分代码省略.........
示例2: extract_layers
# 需要导入模块: from qgis.core import QgsPalLayerSettings [as 别名]
# 或者: from qgis.core.QgsPalLayerSettings import xOffset [as 别名]
#.........这里部分代码省略.........
# Add features from xml tree..
# ..to vertex layer..
fts_vertex = []
for e in tree.findall(r"sommet"):
ft_vertex = QgsFeature()
ft_vertex.setGeometry(QgsGeometry.fromWkt(e.attrib[r"geometrie"]))
_id_noeud = int(e.attrib[r"id_noeud"])
# _changeset = int(e.attrib[r"changeset"])
# _timestamp = QDateTime(datetime.strptime(
# e.attrib[r"timestamp"], r"%Y-%m-%d %H:%M:%S.%f"))
_version = int(e.attrib[r"version"])
som_ge_createur = unicode(e.find(r"./som_ge_createur").text)
som_nature = unicode(e.find(r"./som_nature").text)
som_prec_rattcht = int(e.find(r"./som_precision_rattachement").text)
som_coord_est = float(e.find(r"./som_coord_est").text)
som_coord_nord = float(e.find(r"./som_coord_nord").text)
som_repres_plane = unicode(e.find(r"./som_representation_plane").text)
# som_date_creation = QDate(datetime.strptime(
# e.find(r"./som_date_creation").text, r"%Y-%m-%d").date())
ft_vertex.setAttributes([
_id_noeud,
# _changeset,
# _timestamp,
_version,
som_ge_createur,
som_nature,
som_prec_rattcht,
som_coord_est,
som_coord_nord,
som_repres_plane,
# som_date_creation
])
fts_vertex.append(ft_vertex)
# ..to edge layer..
fts_edge = []
for e in tree.findall(r"limite"):
ft_edge = QgsFeature()
ft_edge.setGeometry(QgsGeometry.fromWkt(e.attrib[r"geometrie"]))
_id_arc = int(e.attrib[r"id_arc"])
# _id_noeud_debut = int(e.attrib[r"id_noeud_debut"])
# _id_noeud_fin = int(e.attrib[r"id_noeud_fin"])
# _changeset = int(e.attrib[r"changeset"])
# _timestamp = QDateTime(datetime.strptime(
# e.attrib[r"timestamp"], r"%Y-%m-%d %H:%M:%S.%f"))
_version = int(e.attrib[r"version"])
lim_ge_createur = unicode(e.find(r"./lim_ge_createur").text)
# lim_date_creation = QDate(datetime.strptime(
# e.find(r"./lim_date_creation").text, r"%Y-%m-%d").date())
ft_edge.setAttributes([
_id_arc,
# _id_noeud_debut,
# _id_noeud_fin,
# _changeset,
# _timestamp,
_version,
lim_ge_createur,
# lim_date_creation
])
fts_edge.append(ft_edge)
# Add features to layers..
p_vertex.addFeatures(fts_vertex)
p_edge.addFeatures(fts_edge)
# Update fields..
l_vertex.updateFields()
l_edge.updateFields()
# Update layer's extent..
l_vertex.updateExtents()
l_edge.updateExtents()
# Check if valid..
if not l_vertex.isValid() or not l_edge.isValid():
raise Exception(u"Une erreur est survenue lors du chargement de la couche.")
# Set labelling...
palyr = QgsPalLayerSettings()
palyr.enabled = True
# palyr.readFromLayer(l_vertex)
palyr.fieldName = r"$id" # Expression $id
palyr.placement = 1 # ::OverPoint
palyr.quadOffset = 2 # ::QuadrantAboveRight
palyr.setDataDefinedProperty(80, True, True, r"1", "") # ::OffsetUnits -> ::MM
palyr.xOffset = 2.0
palyr.yOffset = -1.0
palyr.writeToLayer(l_vertex)
# Then return layers..
return [l_vertex, l_edge]