def generateIsochrones(point,
profile,
costingOptions,
intervals,
colors,
basename,
overwrite=True):
response = valhalla.isochrones(point, profile, costingOptions, intervals,
colors)
features = getFeaturesFromResponse(response)
for interval, feature in zip(intervals[::-1], features):
# FIXME: we should use the 'contour' property in the feature to be sure of the contour line that we are
# drawing, but due to a bug in qgis json parser, this property appears to be always set to '0'
layername = "{} min - {}".format(interval, basename)
try:
# FIXME: we do not consider if there are several layers with the same name here
existinglayer = QgsProject.instance().mapLayersByName(layername)[0]
if overwrite:
QgsProject.instance().removeMapLayer(existinglayer.id())
else:
raise OverwriteError(
tr("layer {layername} already exists and overwrite is {overwrite}"
).format(layername=layername, overwrite=overwrite))
except IndexError:
LOG.debug("this layer was not found: {}".format(layername))
layer = QgsVectorLayer(
"Polygon?crs=epsg:4326&field=centerx:double&field=centery:double&field=interval:double",
layername,
"memory",
)
pr = layer.dataProvider()
qgsfeature = QgsFeature()
qgsfeature.setAttributes([point.x(), point.y(), interval])
qgsfeature.setGeometry(feature.geometry())
pr.addFeatures([qgsfeature])
layer.updateExtents()
QgsProject.instance().addMapLayer(layer)
outlineColor = QColor(0, 0, 0)
# Set opacity to 75% or C0 in hex (25% transparency)
fillColor = QColor("#C0" + feature["color"][1:])
renderer = QgsSingleSymbolRenderer.defaultRenderer(
QgsWkbTypes.PolygonGeometry)
symbol = renderer.symbol()
symbol.setColor(fillColor)
symbol.symbolLayer(0).setStrokeColor(outlineColor)
layer.setRenderer(renderer)
def _downloadAndUnzip(self, itemid):
self.progress_bar = QProgressBar()
self.progress_bar.setMinimum(0)
self.progress_bar.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
self.progess_message_bar = self.iface.messageBar().createMessage(
tr("Downloading..."))
self.progess_message_bar.layout().addWidget(self.progress_bar)
self.iface.messageBar().pushWidget(self.progess_message_bar, Qgis.Info)
# FIXME: the signal is always emitted
# self.iface.messageBar().widgetRemoved.connect(self.widget_removed)
def extract_data(tmpPath, itemid):
LOG.debug("Extract data")
try:
targetFolder = DataCatalogueClient.folderForDataItem(itemid)
QDir(targetFolder).removeRecursively()
unzip.unzip(tmpPath, targetFolder)
QFile(tmpPath).remove()
except Exception as e:
LOG.debug("Error on extracting data %s" % e)
url = f"{self.url}/content/items/{itemid}/data"
tmpDir = QDir.tempPath()
filename = f"{itemid}.zip"
tmpPath = QDir.cleanPath(os.path.join(tmpDir, filename))
loop = QEventLoop()
self.downloader = QgsFileDownloader(QUrl(url), tmpPath)
self.downloader.downloadProgress.connect(self.update_progress)
self.downloader.downloadCompleted.connect(self.download_finished)
self.downloader.downloadCompleted.connect(
partial(extract_data, tmpPath, itemid))
self.downloader.downloadCanceled.connect(self.download_canceled)
self.downloader.downloadExited.connect(loop.quit)
loop.exec_()
def generateIsochrones(point,
profile,
costingOptions,
intervals,
colors,
basename,
overwrite=True):
response = valhalla.isochrones(point, profile, costingOptions, intervals,
colors)
features = getFeaturesFromResponse(response)
if costingOptions.get("shortest"):
suffix = "km"
else:
suffix = "min"
for interval, feature in zip(intervals[::-1], features):
# FIXME: we should use the 'contour' property in the feature to be sure of the contour line that we are
# drawing, but due to a bug in qgis json parser, this property appears to be always set to '0'
layername = "{} {} - {}".format(interval, suffix, basename)
try:
# FIXME: we do not consider if there are several layers with the same name here
existinglayer = QgsProject.instance().mapLayersByName(layername)[0]
if overwrite:
QgsProject.instance().removeMapLayer(existinglayer.id())
else:
raise OverwriteError(
tr("layer {layername} already exists and overwrite is {overwrite}"
).format(layername=layername, overwrite=overwrite))
except IndexError:
LOG.debug("this layer was not found: {}".format(layername))
layer = QgsVectorLayer(
"Polygon?crs=epsg:4326&field=centerx:double&field=centery:double&field=interval:double",
layername,
"memory",
)
pr = layer.dataProvider()
qgsfeature = QgsFeature()
qgsfeature.setAttributes([point.x(), point.y(), interval])
qgsfeature.setGeometry(feature.geometry())
pr.addFeatures([qgsfeature])
layer.updateExtents()
QgsProject.instance().addMapLayer(layer)
outlineColor = QColor(0, 0, 0)
# Set opacity to 40% or 66 in hex (65% transparency)
fillColor = QColor("#66" + feature["color"][1:])
renderer = QgsSingleSymbolRenderer.defaultRenderer(
QgsWkbTypes.PolygonGeometry)
symbol = renderer.symbol()
symbol.setColor(fillColor)
symbol.symbolLayer(0).setStrokeColor(outlineColor)
layer.setRenderer(renderer)
# Add center of reachability
center_point_layer_name = tr("Center of {basename}").format(
basename=basename)
try:
existinglayer = QgsProject.instance().mapLayersByName(
center_point_layer_name)[0]
if overwrite:
QgsProject.instance().removeMapLayer(existinglayer.id())
else:
raise OverwriteError(
tr("layer {layername} already exists and overwrite is {overwrite}"
).format(layername=center_point_layer_name,
overwrite=overwrite))
except IndexError:
LOG.debug(
"this layer was not found: {}".format(center_point_layer_name))
center_point = QgsVectorLayer(
"Point?crs=epsg:4326",
center_point_layer_name,
"memory",
)
pr = center_point.dataProvider()
qgsfeature = QgsFeature()
qgsfeature.setGeometry(QgsGeometry.fromPointXY(point))
pr.addFeatures([qgsfeature])
# symbology
path = ":/kadas/icons/pin_red"
symbol = QgsSvgMarkerSymbolLayer(path)
symbol.setSize(10)
symbol.setVerticalAnchorPoint(QgsMarkerSymbolLayer.Bottom)
center_point.renderer().symbol().changeSymbolLayer(0, symbol)
QgsProject.instance().addMapLayer(center_point)
def download_canceled(self):
pushWarning(tr("Download is canceled!"))
LOG.debug("Download is canceled")
def func(*args, **kw):
if ValhallaClient.getInstance().isAvailable():
method(*args, **kw)
else:
pushWarning(tr("Valhalla is not installed or it cannot be found"))
route_html_template = (
"""
<table border="0" style="border-collapse: collapse; width: 100%; height: 100%;">
<tbody>
<tr>
<td style="width: 100%; background-color: #333f4f; text-align: center;">
<p>
<img src="{icon}" alt="" width="100" height="100" style="display: block; margin-left: auto; margin-right: auto;" />
</p>
<h2 style="text-align: center;"><span style="color: #ffffff;">{dist}<br/>{message}</span></h>
</td>
</tr>
<tr>
<td style="width: 100%; background-color: #adb9ca; text-align: left; font-size:12pt">"""
+ tr("Then")
+ """
<img src="{icon2}" width="32" height="32" /> {dist2}<br/> {message2}</td>
</tr>
<tr>
<td style="width: 100%; background-color: #44546a;">
<p style="text-align: left;">
<span style="color: #ffffff; font-size:10pt">"""
+ tr("Speed")
+ """ {speed:.2f} km/h</span><br />
<span style="color: #ffffff; font-size:10pt">"""
+ tr("Time Left")
+ """ {timeleft}</span><br />
<span style="color: #ffffff; font-size:10pt">"""
+ tr("Dist Left")
+ """ {distleft}</span><br />