本文整理汇总了Python中qgis.gui.QgsMapCanvasAnnotationItem类的典型用法代码示例。如果您正苦于以下问题：Python QgsMapCanvasAnnotationItem类的具体用法？Python QgsMapCanvasAnnotationItem怎么用？Python QgsMapCanvasAnnotationItem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QgsMapCanvasAnnotationItem类的4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: testVisibility
def testVisibility(self):
""" test that map canvas annotation item visibility follows layer"""
a = QgsTextAnnotation()
canvas = QgsMapCanvas()
i = QgsMapCanvasAnnotationItem(a, canvas)
self.assertTrue(i.isVisible())
layer = QgsVectorLayer("Point?crs=EPSG:3111&field=fldtxt:string",
'test', "memory")
a.setMapLayer(layer)
self.assertFalse(i.isVisible())
canvas.setLayers([layer])
self.assertTrue(i.isVisible())示例2: testSize
def testSize(self):
""" test that map canvas annotation item size is correct """
a = QgsTextAnnotation()
a.setFrameSize(QSizeF(300, 200))
a.setHasFixedMapPosition(False)
a.setFillSymbol(QgsFillSymbol.createSimple({'color': 'blue', 'width_border': '0'}))
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.assertAlmostEqual(i.boundingRect().width(), 300, 1)
self.assertAlmostEqual(i.boundingRect().height(), 200, 1)
a.setHasFixedMapPosition(True)
a.setFrameOffsetFromReferencePoint(QPointF(0, 0))
self.assertAlmostEqual(i.boundingRect().width(), 300, -1)
self.assertAlmostEqual(i.boundingRect().height(), 200, -1)
a.setFrameOffsetFromReferencePoint(QPointF(10, 20))
self.assertAlmostEqual(i.boundingRect().width(), 310, -1)
self.assertAlmostEqual(i.boundingRect().height(), 220, -1)示例3: testPosition
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4: testSize
def testSize(self):
""" test that map canvas annotation item size is correct """
a = QgsTextAnnotation()
a.setFrameSizeMm(QSizeF(300 / 3.7795275, 200 / 3.7795275))
a.setHasFixedMapPosition(False)
a.setFillSymbol(QgsFillSymbol.createSimple({'color': 'blue', 'width_border': '0'}))
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)
# ugly, but Travis has different default DPI:
if 299 < i.boundingRect().width() < 301:
self.assertAlmostEqual(i.boundingRect().width(), 300, 1)
self.assertAlmostEqual(i.boundingRect().height(), 200, 1)
a.setHasFixedMapPosition(True)
a.setFrameOffsetFromReferencePoint(QPointF(0, 0))
self.assertAlmostEqual(i.boundingRect().width(), 300, -1)
self.assertAlmostEqual(i.boundingRect().height(), 200, -1)
a.setFrameOffsetFromReferencePoint(QPointF(10, 20))
self.assertAlmostEqual(i.boundingRect().width(), 310, -1)
self.assertAlmostEqual(i.boundingRect().height(), 220, -1)
else:
self.assertAlmostEqual(i.boundingRect().width(), 312.5, 1)
self.assertAlmostEqual(i.boundingRect().height(), 208.33, 1)
a.setHasFixedMapPosition(True)
a.setFrameOffsetFromReferencePoint(QPointF(0, 0))
self.assertAlmostEqual(i.boundingRect().width(), 312.5, -1)
self.assertAlmostEqual(i.boundingRect().height(), 208.33, -1)
a.setFrameOffsetFromReferencePoint(QPointF(10, 20))
self.assertAlmostEqual(i.boundingRect().width(), 322.91, -1)
self.assertAlmostEqual(i.boundingRect().height(), 229.166, -1)