本文整理汇总了Python中qgis.gui.QgsMapCanvas.height方法的典型用法代码示例。如果您正苦于以下问题:Python QgsMapCanvas.height方法的具体用法?Python QgsMapCanvas.height怎么用?Python QgsMapCanvas.height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.gui.QgsMapCanvas
的用法示例。
在下文中一共展示了QgsMapCanvas.height方法的5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: testDeferredUpdate
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import height [as 别名]
def testDeferredUpdate(self):
""" test that map canvas doesn't auto refresh on deferred layer update """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
while canvas.isDrawing():
app.processEvents()
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# deferred update - so expect that canvas will not been refreshed
layer.triggerRepaint(True)
timeout = time.time() + 0.1
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
# canvas should still be empty
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# refresh canvas
canvas.refresh()
while not canvas.isDrawing():
app.processEvents()
while canvas.isDrawing():
app.processEvents()
# now we expect the canvas check to fail (since they'll be a new polygon rendered over it)
self.assertFalse(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
示例2: testPosition
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import height [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3: testRefreshOnTimer
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import height [as 别名]
def testRefreshOnTimer(self):
""" test that map canvas refreshes with auto refreshing layers """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# set auto refresh on layer
layer.setAutoRefreshInterval(100)
layer.setAutoRefreshEnabled(True)
timeout = time.time() + 1
# expect canvas to auto refresh...
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# wait for canvas auto refresh
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# now canvas should look different...
self.assertFalse(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# switch off auto refresh
layer.setAutoRefreshEnabled(False)
timeout = time.time() + 0.5
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
示例4: testMapTheme
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import height [as 别名]
def testMapTheme(self):
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#ffb200'})
renderer = QgsSingleSymbolRenderer(sym1)
layer.setRenderer(renderer)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add some styles
layer.styleManager().addStyleFromLayer('style1')
sym2 = QgsFillSymbol.createSimple({'color': '#00b2ff'})
renderer2 = QgsSingleSymbolRenderer(sym2)
layer.setRenderer(renderer2)
layer.styleManager().addStyleFromLayer('style2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
layer.styleManager().setCurrentStyle('style1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# OK, so all good with setting/rendering map styles
# try setting canvas to a particular theme
# make some themes...
theme1 = QgsMapThemeCollection.MapThemeRecord()
record1 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record1.currentStyle = 'style1'
record1.usingCurrentStyle = True
theme1.setLayerRecords([record1])
theme2 = QgsMapThemeCollection.MapThemeRecord()
record2 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record2.currentStyle = 'style2'
record2.usingCurrentStyle = True
theme2.setLayerRecords([record2])
QgsProject.instance().mapThemeCollection().insert('theme1', theme1)
QgsProject.instance().mapThemeCollection().insert('theme2', theme2)
canvas.setTheme('theme2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
canvas.setTheme('theme1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add another layer
layer2 = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer2", "memory")
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer2.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#b2ff00'})
renderer = QgsSingleSymbolRenderer(sym1)
layer2.setRenderer(renderer)
# rerender canvas - should NOT show new layer
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# test again - this time refresh all layers
canvas.refreshAllLayers()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add layer 2 to theme1
record3 = QgsMapThemeCollection.MapThemeLayerRecord(layer2)
theme1.setLayerRecords([record3])
QgsProject.instance().mapThemeCollection().update('theme1', theme1)
#.........这里部分代码省略.........
示例5: WidgetResult
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import height [as 别名]
class WidgetResult(Ui_widgetResult, QWidget):
"""
Widget (Panel) for result review
"""
''' buffer around clicked point for point in polygon query '''
SEARCH_BUFFER = 20.0
''' supported export formats '''
EXPORT_FORMATS = {
get_ui_string("app.extension.shapefile"):ExportTypes.Shapefile,
#get_ui_string("app.extension.kml"):ExportTypes.KML,
#get_ui_string("app.extension.nrml"):ExportTypes.NRML,
get_ui_string("app.extension.csv"):ExportTypes.CSV,
};
''' enumeration of Layer to be previewed '''
EXPOSURE, SURVEY, POP_GRID, FOOTPRINT, ZONES = range(5);
''' name for Layer to be previewed '''
LAYER_NAMES = [
get_ui_string("widget.result.layer.exposure"),
get_ui_string("widget.result.layer.survey"),
get_ui_string("widget.result.layer.popgrid"),
get_ui_string("widget.result.layer.footprint"),
get_ui_string("widget.result.layer.zones"),
];
LAYER_STYLES = [
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="0" class="SimpleLine" locked="0"><prop k="capstyle" v="square"/><prop k="color" v="0,0,0,255"/><prop k="customdash" v="5;2"/><prop k="joinstyle" v="bevel"/><prop k="offset" v="0"/><prop k="penstyle" v="solid"/><prop k="use_custom_dash" v="0"/><prop k="width" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="0" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,0,255,255"/><prop k="color_border" v="0,0,255,255"/><prop k="name" v="circle"/><prop k="offset" v="0,0"/><prop k="size" v="2"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="0" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,255,0,255"/><prop k="color_border" v="0,255,0,255"/><prop k="name" v="rectangle"/><prop k="offset" v="0,0"/><prop k="size" v="4"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="0" class="SimpleFill" locked="0"><prop k="color" v="170,250,170,255"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="0" class="SimpleFill" locked="0"><prop k="color" v="211,211,158,200"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
]
# constructor / destructor
###############################
def __init__(self, app):
"""
constructor
- initialize UI elements
- connect UI elements to callback
"""
super(WidgetResult, self).__init__()
self.ui = Ui_widgetResult()
self.ui.setupUi(self)
# create canvas
self.canvas = QgsMapCanvas(self.ui.widget_map)
self.canvas.setGeometry(
0, # x
self.ui.widget_map_menu_l.x()+self.ui.widget_map_menu_l.height(), # y
self.ui.widget_map.width() - 2*UI_PADDING, # width
self.ui.widget_map.width() - 2*UI_PADDING # height
)
self.canvas.setCanvasColor(Qt.white)
self.canvas.enableAntiAliasing(True)
self.canvas.mapRenderer().setProjectionsEnabled(True)
self.canvas.mapRenderer().setDestinationCrs(QgsCoordinateReferenceSystem(4326, QgsCoordinateReferenceSystem.PostgisCrsId))
self.canvas.zoomNextStatusChanged.connect(self.checkRendering)
self.canvas.xyCoordinates.connect(self.currentLocation)
self.registry = QgsMapLayerRegistry.instance()
self.map_layers = [None] * len(self.LAYER_NAMES)
self.map_layer_renderer = [None] * len(self.LAYER_NAMES)
for idx, str_style in enumerate(self.LAYER_STYLES):
rdoc = QDomDocument("renderer")
rdoc.setContent(str_style)
self.map_layer_renderer[idx] = QgsFeatureRendererV2.load(rdoc.firstChild().toElement())
# populate export list
self.ui.cb_export_format.clear()
for export_format in self.EXPORT_FORMATS.keys():
self.ui.cb_export_format.addItem(export_format)
# style object required for QgsRendererV2PropertiesDialog
self.style = QgsStyleV2()
# create the map tools
self.toolPan = QgsMapToolPan(self.canvas)
self.toolZoomIn = QgsMapToolZoom(self.canvas, False) # false = in
self.toolZoomOut = QgsMapToolZoom(self.canvas, True) # true = out
self.toolInfo = QgsMapToolEmitPoint(self.canvas)
self.toolInfo.canvasClicked.connect(self.showInfo)
self.canvas.setMapTool(self.toolPan)
# additional
self.dlgResultDetail = DialogResult()
self.dlgResultDetail.setModal(True)
# set link to application main controller
self.app = app
# reset project
self._project = None
# default export setting
self.export_format = ExportTypes.Shapefile
# connect slots (ui event)
self.ui.btn_zoom_full.clicked.connect(self.mapZoomFull)
#.........这里部分代码省略.........