本文整理汇总了Python中qgis.core.QgsTextAnnotation.setMapPosition方法的典型用法代码示例。如果您正苦于以下问题：Python QgsTextAnnotation.setMapPosition方法的具体用法？Python QgsTextAnnotation.setMapPosition怎么用？Python QgsTextAnnotation.setMapPosition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.QgsTextAnnotation的用法示例。
在下文中一共展示了QgsTextAnnotation.setMapPosition方法的3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: testPosition
# 需要导入模块: from qgis.core import QgsTextAnnotation [as 别名]
# 或者: from qgis.core.QgsTextAnnotation import setMapPosition [as 别名]
def testPosition(self):
""" test that map canvas annotation item syncs position correctly """
a = QgsTextAnnotation()
a.setFrameSizeMm(QSizeF(300 / 3.7795275, 200 / 3.7795275))
a.setFrameOffsetFromReferencePointMm(QPointF(40 / 3.7795275, 50 / 3.7795275))
a.setMapPosition(QgsPointXY(12, 34))
a.setMapPositionCrs(QgsCoordinateReferenceSystem(4326))
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.show()
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
i = QgsMapCanvasAnnotationItem(a, canvas)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
# test that correct initial position is set
self.assertAlmostEqual(i.pos().x(), 120, 1)
self.assertAlmostEqual(i.pos().y(), 110, 1)
# shift annotation map position, check that item is moved
a.setMapPosition(QgsPointXY(14, 32))
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
# check relative position
a.setHasFixedMapPosition(False)
a.setRelativePosition(QPointF(0.8, 0.4))
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)
# flicking between relative and fixed position
a.setHasFixedMapPosition(True)
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
a.setHasFixedMapPosition(False)
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)示例2: testSettingFeature
# 需要导入模块: from qgis.core import QgsTextAnnotation [as 别名]
# 或者: from qgis.core.QgsTextAnnotation import setMapPosition [as 别名]
def testSettingFeature(self):
""" test that feature is set when item moves """
a = QgsTextAnnotation()
a.setFrameSizeMm(QSizeF(300 / 3.7795275, 200 / 3.7795275))
a.setFrameOffsetFromReferencePointMm(QPointF(40 / 3.7795275, 50 / 3.7795275))
a.setHasFixedMapPosition(True)
a.setMapPosition(QgsPointXY(12, 34))
a.setMapPositionCrs(QgsCoordinateReferenceSystem(4326))
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
i = QgsMapCanvasAnnotationItem(a, canvas) # NOQA
layer = QgsVectorLayer("Point?crs=EPSG:4326&field=station:string&field=suburb:string",
'test', "memory")
canvas.setLayers([layer])
f = QgsFeature(layer.fields())
f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(14, 31)))
f.setValid(True)
f.setAttributes(['hurstbridge', 'somewhere'])
self.assertTrue(layer.dataProvider().addFeatures([f]))
a.setMapLayer(layer)
self.assertFalse(a.associatedFeature().isValid())
a.setMapPosition(QgsPointXY(14, 31))
self.assertTrue(a.associatedFeature().isValid())
self.assertEqual(a.associatedFeature().attributes()[0], 'hurstbridge')
a.setMapPosition(QgsPointXY(17, 31))
self.assertFalse(a.associatedFeature().isValid())示例3: drawCostPaths
# 需要导入模块: from qgis.core import QgsTextAnnotation [as 别名]
# 或者: from qgis.core.QgsTextAnnotation import setMapPosition [as 别名]
def drawCostPaths(self, rows, con, args, geomType, canvasItemList, mapCanvas):
resultPathsRubberBands = canvasItemList['paths']
rubberBand = None
cur_path_id = -1
for row in rows:
cur2 = con.cursor()
args['result_path_id'] = row[0]
args['result_source_id'] = sql.Literal(row[1])
args['result_target_id'] = sql.Literal(row[2])
args['result_cost'] = row[3]
if args['result_path_id'] != cur_path_id:
cur_path_id = args['result_path_id']
if rubberBand:
resultPathsRubberBands.append(rubberBand)
rubberBand = None
rubberBand = QgsRubberBand(mapCanvas, Utils.getRubberBandType(False))
rubberBand.setColor(QColor(255, 0, 0, 128))
rubberBand.setWidth(4)
if args['result_cost'] != -1:
query2 = sql.SQL("""
SELECT ST_AsText( ST_MakeLine(
(SELECT {geometry_vt} FROM {vertex_schema}.{vertex_table} WHERE id = {result_source_id}),
(SELECT {geometry_vt} FROM {vertex_schema}.{vertex_table} WHERE id = {result_target_id})
))
""").format(**args)
# Utils.logMessage(query2)
cur2.execute(query2)
row2 = cur2.fetchone()
# Utils.logMessage(str(row2[0]))
geom = QgsGeometry().fromWkt(str(row2[0]))
if geom.wkbType() == QgsWkbTypes.MultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
rubberBand.addPoint(pt)
elif geom.wkbType() == QgsWkbTypes.LineString:
for pt in geom.asPolyline():
rubberBand.addPoint(pt)
# TODO label the edge instead of labeling the target points
if rubberBand:
resultPathsRubberBands.append(rubberBand)
rubberBand = None
resultNodesTextAnnotations = canvasItemList['annotations']
for row in rows:
cur2 = con.cursor()
args['result_seq'] = row[0]
args['result_source_id'] = sql.Literal(row[1])
result_target_id = row[2]
args['result_target_id'] = sql.Literal(result_target_id)
result_cost = row[3]
query2 = sql.SQL("""
SELECT ST_AsText( ST_startPoint({geometry}) ) FROM {edge_schema}.{edge_table}
WHERE {source} = {result_target_id}
UNION
SELECT ST_AsText( ST_endPoint( {geometry} ) ) FROM {edge_schema}.{edge_table}
WHERE {target} = {result_target_id}
""").format(**args)
cur2.execute(query2)
row2 = cur2.fetchone()
geom = QgsGeometry().fromWkt(str(row2[0]))
pt = geom.asPoint()
textDocument = QTextDocument("{0!s}:{1}".format(result_target_id, result_cost))
textAnnotation = QgsTextAnnotation()
textAnnotation.setMapPosition(geom.asPoint())
textAnnotation.setFrameSize(QSizeF(textDocument.idealWidth(), 20))
textAnnotation.setFrameOffsetFromReferencePoint(QPointF(20, -40))
textAnnotation.setDocument(textDocument)
QgsMapCanvasAnnotationItem(textAnnotation, mapCanvas)
resultNodesTextAnnotations.append(textAnnotation)