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import json
import logging
import os
import time
from qtpy.QtCore import Slot, Signal, QJsonValue
from ... import mapwidget
from ..core import Evented
from ..layer import Layer
class Map(Evented):
'''
.. module:: pyqtlet2
pyqtlet2 equivalent of L.map
Map element has to be the first pyqtlet2 object to be initiated.
.. note::
Further documentation can be found at the official leaflet API.
:param pyqtlet2.MapWidget mapWidget: The mapwidget object
Should only be sent once, when the first object is being
initialised.
:param dict options: Options for initiation (optional)
'''
clicked = Signal(dict)
zoom = Signal(dict)
drawCreated = Signal(dict)
right_mouse_clicked = Signal(dict)
mapWidgetCounter = 0
@property
def layers(self):
"""
Instead of L.map.eachLayer
"""
return self._layers
@property
def jsName(self):
'''
Name of the Leaflet element
'''
return self._jsName
@Slot(QJsonValue)
def _onClick(self, event):
self._logger.debug('map clicked. event: {event}'.format(event=event))
self.clicked.emit(self._qJsonValueToDict(event))
@Slot(QJsonValue)
def _onRightClick(self, event):
self._logger.debug('map clicked. event: {event}'.format(event=event))
self.right_mouse_clicked.emit(self._qJsonValueToDict(event))
@Slot(QJsonValue)
def _onDrawCreated(self, event):
self._logger.debug('draw created. event: {event}'.format(event=event))
self.drawCreated.emit(self._qJsonValueToDict(event))
@Slot(QJsonValue)
def _onZoom(self, event):
self._logger.debug('map zoom. event: {event}'.format(event=event))
self.zoom.emit(self._qJsonValueToDict(event))
def __init__(self, mapWidget, options=None):
'''
pyqtlet2 equivalent of L.map
Map element has to be the first pyqtlet2 object to be initiated.
:param pyqtlet2.MapWidget mapWidget: The mapwidget object
Should only be sent once, when the first object is being
initialised.
:param dict options: Options for initiation (optional)
.. note
Further documentation can be found at the official leaflet API.
'''
super().__init__(mapWidget, Map.mapWidgetCounter)
self.mapWidgetIndex = Map.mapWidgetCounter
Map.mapWidgetCounter += 1
self._logger = logging.getLogger(__name__)
self.options = options
self._layers = []
self._controls = []
self._jsName = 'map'
self._initJs()
self._connectEventToSignal('click', '_onClick', self.mapWidgetIndex)
self._connectEventToSignal('contextmenu', '_onRightClick', self.mapWidgetIndex)
self._connectEventToSignal('zoom', '_onZoom', self.mapWidgetIndex)
self._connectEventToSignal('draw:created', '_onDrawCreated', self.mapWidgetIndex)
def _initJs(self):
jsObject = 'L.map("map"'
if self.options:
jsObject += ', {options}'.format(options=self._stringifyForJs(self.options))
jsObject += ')'
self._createJsObject(jsObject, self.mapWidgetIndex)
def setView(self, latLng, zoom=None, options=None):
js = 'map.setView({latLng}'.format(latLng=latLng)
if zoom:
js += ', {zoom}'.format(zoom=zoom)
if options:
js += ', {options}'.format(options=options)
js += ');'
self.runJavaScript(js, self.mapWidgetIndex)
return self
def runJavaScriptForMap(self, js):
self.runJavaScript(js, self.mapWidgetIndex)
def addLayer(self, layer: Layer):
self._layers.append(layer)
layer.map = self
layer._initJs()
js = 'map.addLayer({layerName})'.format(layerName=layer.layerName)
self.runJavaScriptForMap(js)
layer._initPopupAndTooltip()
return self
def removeLayer(self, layer):
if layer not in self._layers:
# TODO Should we raise a ValueError here? Or just return
return
self._layers.remove(layer)
layer.map = None
js = 'map.removeLayer({layerName})'.format(layerName=layer.layerName)
self.runJavaScriptForMap(js)
return self
def addControl(self, control):
self._controls.append(control)
control.map = self
control._initJs()
js = 'map.addControl({controlName})'.format(controlName=control.controlName)
self.runJavaScriptForMap(js)
return self
def removeControl(self, control):
if control not in self._controls:
# TODO Should we raise a ValueError here? Or just return
return
self._controls.remove(control)
control.map = None
js = 'map.removeControl({controlName})'.format(controlName=control.controlName)
self.runJavaScriptForMap(js)
return self
def getJsresponseForMap(self, js, callback):
return self.getJsResponse(js, self.mapWidgetIndex, callback)
def getBounds(self, callback):
return self.getJsresponseForMap('map.getBounds()', callback)
def getCenter(self, callback):
return self.getJsresponseForMap('map.getCenter()', callback)
def getZoom(self, callback):
return self.getJsresponseForMap('map.getZoom()', callback)
def getState(self, callback):
return self.getJsresponseForMap('getMapState()', callback)
def hasLayer(self, layer):
return layer in self._layers
def setZoom(self, zoom, options=None):
js = 'map.setZoom({zoom}'.format(zoom=zoom)
if options:
js += ', {options}'.format(options=options)
js += ');'
self.runJavaScriptForMap(js)
return self
def setMaxBounds(self, bounds):
js = 'map.setMaxBounds({bounds})'.format(bounds=bounds)
self.runJavaScriptForMap(js)
return self
def fitBounds(self, bounds):
js = 'map.fitBounds({bounds})'.format(bounds=bounds)
self.runJavaScriptForMap(js)
return self
def setMaxZoom(self, zoom):
js = 'map.setMaxZoom({zoom})'.format(zoom=zoom)
self.runJavaScriptForMap(js)
return self
def setMinZoom(self, zoom):
js = 'map.setMinZoom({zoom})'.format(zoom=zoom)
self.runJavaScriptForMap(js)
return self
def panTo(self, latLng, options=None):
js = 'map.panTo({latLng}'.format(latLng=latLng)
if options:
js += ', {options}'.format(options=options)
js += ');'
self.runJavaScriptForMap(js)
return self
def flyTo(self, latLng, zoom=None, options=None):
js = 'map.flyTo({latLng}'.format(latLng=latLng)
if zoom:
js += ', {zoom}'.format(zoom=zoom)
if options:
js += ', {options}'.format(options=options)
js += ');'
self.runJavaScriptForMap(js)
return self
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