本文整理汇总了Python中qgis.gui.QgsMapCanvas.mapRenderer方法的典型用法代码示例。如果您正苦于以下问题:Python QgsMapCanvas.mapRenderer方法的具体用法?Python QgsMapCanvas.mapRenderer怎么用?Python QgsMapCanvas.mapRenderer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.mapRenderer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: MirrorMap
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import mapRenderer [as 别名]
class MirrorMap(QWidget):
def __init__(self, parent, iface):
QWidget.__init__(self, parent)
self.setAttribute(Qt.WA_DeleteOnClose)
self.iface = iface
self.layerId2canvasLayer = {}
self.canvasLayers = []
self.setupUi()
def closeEvent(self, event):
# self.scaleFactor.valueChanged.disconnect(self.onExtentsChanged)
QObject.disconnect(self.iface.mapCanvas(), SIGNAL("extentsChanged()"), self.onExtentsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("destinationCrsChanged()"), self.onCrsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("mapUnitsChanged()"), self.onCrsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("hasCrsTransformEnabled(bool)"), self.onCrsTransformEnabled)
QObject.disconnect(QgsMapLayerRegistry.instance(), SIGNAL("layerWillBeRemoved(QString)"), self.delLayer)
QObject.disconnect(self.iface, SIGNAL("currentLayerChanged(QgsMapLayer *)"), self.refreshLayerButtons)
self.emit(SIGNAL("closed(PyQt_PyObject)"), self)
return QWidget.closeEvent(self, event)
def setupUi(self):
self.setObjectName("dockablemirrormap_mirrormap")
gridLayout = QGridLayout(self)
gridLayout.setContentsMargins(0, 0, gridLayout.verticalSpacing(), gridLayout.verticalSpacing())
self.canvas = QgsMapCanvas(self)
self.canvas.setCanvasColor(QColor(255, 255, 255))
settings = QSettings()
self.canvas.enableAntiAliasing(settings.value("/qgis/enable_anti_aliasing", False, type=bool))
self.canvas.useImageToRender(settings.value("/qgis/use_qimage_to_render", False, type=bool))
self.canvas.setWheelAction(3)
gridLayout.addWidget(self.canvas, 0, 0, 1, 5)
QObject.connect(self.iface.mapCanvas(), SIGNAL("extentsChanged()"), self.onExtentsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("destinationCrsChanged()"), self.onCrsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("mapUnitsChanged()"), self.onCrsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("hasCrsTransformEnabled(bool)"), self.onCrsTransformEnabled)
QObject.connect(QgsMapLayerRegistry.instance(), SIGNAL("layerWillBeRemoved(QString)"), self.delLayer)
self.onExtentsChanged()
self.onCrsChanged()
self.onCrsTransformEnabled(self.iface.mapCanvas().hasCrsTransformEnabled())
def toggleRender(self, enabled):
self.canvas.setRenderFlag(enabled)
self.canvas.refresh()
self.canvas.repaint()
def onExtentsChanged(self):
try :
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
self.canvas.setExtent(self.iface.mapCanvas().extent())
# self.canvas.zoomByFactor( self.scaleFactor.value() )
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
pass
def mirror_extent_changed(self):
logger.debug(self.canvas.extent())
logger.debug(self.iface.mapCanvas().extent())
if self.canvas.extent() != self.iface.mapCanvas().extent():
self.emit(SIGNAL("extentChanged( QgsRectangle )"), self.canvas.extent())
def onCrsChanged(self):
try:
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
renderer = self.iface.mapCanvas().mapRenderer()
self._setRendererCrs(self.canvas.mapRenderer(), self._rendererCrs(renderer))
self.canvas.mapRenderer().setMapUnits(renderer.mapUnits())
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
pass
def onCrsTransformEnabled(self, enabled):
try:
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
self.canvas.mapRenderer().setProjectionsEnabled(enabled)
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
#.........这里部分代码省略.........
示例2: ConflictDialog
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import mapRenderer [as 别名]
class ConflictDialog(WIDGET, BASE):
LOCAL, REMOTE, DELETE = 1,2, 3
def __init__(self, conflicts):
super(ConflictDialog, self).__init__(None, Qt.WindowSystemMenuHint | Qt.WindowTitleHint)
self.solved = False
self.resolvedConflicts = {}
self.conflicts = conflicts
self.setupUi(self)
self.setWindowFlags(self.windowFlags() |
Qt.WindowSystemMenuHint |
Qt.WindowMinMaxButtonsHint)
self.zoomButton.clicked.connect(self.zoomToFullExtent)
self.solveButton.clicked.connect(self.solve)
self.conflictsTree.itemClicked.connect(self.treeItemClicked)
self.attributesTable.cellClicked.connect(self.cellClicked)
self.solveAllLocalButton.clicked.connect(self.solveAllLocal)
self.solveAllRemoteButton.clicked.connect(self.solveAllRemote)
self.solveLocalButton.clicked.connect(self.solveLocal)
self.solveRemoteButton.clicked.connect(self.solveRemote)
self.showRemoteCheck.stateChanged.connect(self.showGeoms)
self.showLocalCheck.stateChanged.connect(self.showGeoms)
self.lastSelectedItem = None
self.currentPath = None
self.currentConflict = None
self.theirsLayer = None
self.oursLayer = None
settings = QSettings()
horizontalLayout = QHBoxLayout()
horizontalLayout.setSpacing(0)
horizontalLayout.setMargin(0)
self.mapCanvas = QgsMapCanvas()
self.mapCanvas.setCanvasColor(Qt.white)
self.mapCanvas.enableAntiAliasing(settings.value("/qgis/enable_anti_aliasing", False, type = bool))
self.mapCanvas.useImageToRender(settings.value("/qgis/use_qimage_to_render", False, type = bool))
self.mapCanvas.mapRenderer().setProjectionsEnabled(True)
action = settings.value("/qgis/wheel_action", 0, type = float)
zoomFactor = settings.value("/qgis/zoom_factor", 2, type = float)
self.mapCanvas.setWheelAction(QgsMapCanvas.WheelAction(action), zoomFactor)
horizontalLayout.addWidget(self.mapCanvas)
self.canvasWidget.setLayout(horizontalLayout)
self.panTool = QgsMapToolPan(self.mapCanvas)
self.mapCanvas.setMapTool(self.panTool)
self.solveButton.setEnabled(False)
self.solveLocalButton.setEnabled(False)
self.solveRemoteButton.setEnabled(False)
self.fillConflictsTree()
def fillConflictsTree(self):
topTreeItems = {}
for c in self.conflicts:
path = os.path.dirname(c.path)
if path in topTreeItems:
topItem = topTreeItems[path]
else:
topItem = QTreeWidgetItem()
topItem.setText(0, path)
topItem.setIcon(0, layerIcon)
topTreeItems[path] = topItem
conflictItem = ConflictItem(c)
topItem.addChild(conflictItem)
for item in list(topTreeItems.values()):
self.conflictsTree.addTopLevelItem(item)
def cellClicked(self, row, col):
if col > 2:
return
value = self.attributesTable.item(row, col).value
geoms = (self.oursgeom, self.theirsgeom)
self.attributesTable.setItem(row, 4, ValueItem(value, False, geoms));
self.attributesTable.item(row, 0).setBackgroundColor(Qt.white);
self.attributesTable.item(row, 1).setBackgroundColor(Qt.white);
self.attributesTable.item(row, 2).setBackgroundColor(Qt.white);
attrib = self.attributesTable.item(row, 3).text()
if attrib in self.conflicted:
self.conflicted.remove(attrib)
self.updateSolveButton()
self.showGeoms()
def treeItemClicked(self):
item = self.conflictsTree.selectedItems()[0]
if self.lastSelectedItem == item:
return
if isinstance(item, ConflictItem):
self.lastSelectedItem = item
self.currentPath = item.conflict.path
self.updateCurrentPath()
self.solveLocalButton.setEnabled(True)
self.solveRemoteButton.setEnabled(True)
self.solveButton.setEnabled(False)
#.........这里部分代码省略.........
示例3: QgsRasterLayer
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import mapRenderer [as 别名]
# raster layer
world_wmts_url = "contextualWMSLegend=0&crs=EPSG:4326&dpiMode=7&"\
"featureCount=10&format=image/jpeg&layers=opengeo:countries&"\
"styles=&tileMatrixSet=EPSG:4326&"\
"url=http://suite.opengeo.org/geoserver/gwc/service/wmts?request%3DGetCapabilities"
world_lyr = QgsRasterLayer(world_wmts_url, "Countries", 'wms')
print(world_lyr.isValid())
# vector layer
geojson_contributors = path.join(
path.dirname(QgsApplication.developersMapFilePath()),
'contributors.json')
layer = QgsVectorLayer(geojson_contributors, "QGIS Contributors", "ogr")
layer.setLayerTransparency(35)
print(layer.isValid())
# managing map canvas
map_canvas = QgsMapCanvas(new_dialog)
map_canvas.setMinimumSize(800, 600)
map_canvas.mapRenderer().setDestinationCrs(crs_wgs84)
QgsMapLayerRegistry.instance().addMapLayers([layer, world_lyr], 0)
map_canvas_layer_list = [QgsMapCanvasLayer(layer), QgsMapCanvasLayer(world_lyr)]
map_canvas.setExtent(layer.extent())
map_canvas.setLayerSet(map_canvas_layer_list)
new_dialog.show()
print(dir(map_canvas.map))
print(map_canvas.layers())
示例4: AuxiliaryWindow
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import mapRenderer [as 别名]
#.........这里部分代码省略.........
self.extent = None
@pyqtSlot()
def onExtentsChangedMirror(self):
w = self.findChild( QCheckBox, 'renderCheck')
if not w.isChecked():
return
self._extentsChanged( self.qgisCanvas, self.onExtentsChangedQgisCanvas, self.canvas )
self._textScaleBtnChanched()
w = self.findChild( QDoubleSpinBox, 'scaleFactorSpin' )
self._execFunction(
w.setValue, self.canvas.scale() / self.qgisCanvas.scale(),
w.valueChanged, self.onValueChangedScale
)
if not self.extent is None:
self._extent()
@pyqtSlot()
def onExtentsChangedQgisCanvas(self):
w = self.findChild( QCheckBox, 'renderCheck')
if not w.isChecked():
return
w = self.findChild( QDoubleSpinBox, 'scaleFactorSpin' )
self._extentsChanged( self.canvas, self.onExtentsChangedMirror, self.qgisCanvas, w.value() )
self._textScaleBtnChanched()
if not self.extent is None:
self._extent()
@pyqtSlot()
def onDestinationCrsChanged_MapUnitsChanged(self):
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag( False )
self.canvas.setDestinationCrs( self.qgisCanvas.mapRenderer().destinationCrs() )
self.canvas.setMapUnits( self.qgisCanvas.mapUnits() )
self.canvas.setRenderFlag( prevFlag )
@pyqtSlot(bool)
def onHasCrsTransformEnabledChanged(self, enabled):
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag( False )
self.canvas.mapRenderer().setProjectionsEnabled( enabled )
self.canvas.setRenderFlag( prevFlag )
@pyqtSlot(list)
def onLayersWillBeRemoved( self, theLayerIds ):
ids = list( set( self.ltg.findLayerIds() ) & set( theLayerIds ) ) # intersection
nodes = map( lambda item: self.ltg.findLayer( item ), ids )
for item in nodes:
self._connectVectorRefresh( item.layer(), False )
self.ltg.removeChildNode( item )
@pyqtSlot()
def onAddSelectedLayersQgis( self ):
layersQgis = map( lambda item: item.layer(), self.qgisTView.selectedLayerNodes() )
self._addLayersQgis( layersQgis )
@pyqtSlot('QgsLayerTreeNode', int, int)
def addedChildrenLayer(self, ltg, indexFrom, indexTo):
layersQgis = map( lambda item: item.layer(), ltg.findLayers() )
self._addLayersQgis( layersQgis, False )
@pyqtSlot('QgsLayerTreeNode', int, int)
def onRemovedChildrenQgisRoot(self, ltg, indexFrom, indexTo):
if not self.qgisSyncGroup is None and not self.qgisSyncGroup in self.root.children():
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 mapRenderer [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.........