class Evacu8DockWidget(QtGui.QDockWidget, FORM_CLASS):
closingPlugin = pyqtSignal()
def __init__(self, parent=None):
"""Constructor."""
super(Evacu8DockWidget, self).__init__(parent)
# Set up the user interface from Designer.
# After setupUI you can access any designer object by doing
# self.<objectname>, and you can use autoconnect slots - see
# http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
# #widgets-and-dialogs-with-auto-connect
self.setupUi(self)
#define globals
self.iface = iface
self.canvas = self.iface.mapCanvas()
self.plugin_dir = os.path.dirname(__file__)
self.emitPoint = QgsMapToolEmitPoint(self.canvas)
self.toolPoly = PolyMapTool(self.canvas)
self.emitEvac = QgsMapToolEmitPoint(self.canvas)
self.emitShel = QgsMapToolEmitPoint(self.canvas)
self.emitDel = QgsMapToolEmitPoint(self.canvas)
self.input_template = self.scen_info.toHtml()
# set up GUI operation signals
# data
self.load_scen.clicked.connect(self.openScenario)
self.tabs.setTabEnabled(1, False)
self.set_pt.clicked.connect(self.enterPoi)
self.emitPoint.canvasClicked.connect(self.getPoint)
self.set_rad.clicked.connect(self.calculateBuffer)
self.set_rad.setEnabled(False)
self.send_notes.clicked.connect(self.sendNotes)
self.set_danger.clicked.connect(self.setDangerZone)
self.get_danger.clicked.connect(self.getDangerZone)
self.del_danger.clicked.connect(self.delDangerZone)
self.emitDel.canvasClicked.connect(self.get_del)
# set images and icons
self.logo.setPixmap(QtGui.QPixmap(':images/Logosmall.jpeg'))
self.load_scen.setIcon(QtGui.QIcon(':images/Open.png'))
self.load_scen.setIconSize(QSize(25, 25))
self.set_danger.setIcon(QtGui.QIcon(':images/Draw1.svg'))
self.set_danger.setIconSize(QSize(25, 25))
self.get_danger.setIcon(QtGui.QIcon(':images/Check.png'))
self.get_danger.setIconSize(QSize(25, 25))
self.del_danger.setIcon(QtGui.QIcon(':images/Delete.png'))
self.del_danger.setIconSize(QSize(30, 30))
self.shortestRouteButton.setIcon(QtGui.QIcon(':images/Route.png'))
self.shortestRouteButton.setIconSize(QSize(25, 25))
self.to_wiki1.setIcon(QtGui.QIcon(':images/Info.png'))
self.to_wiki1.setIconSize(QSize(20, 20))
# analysis
self.evac = QgsPoint()
self.evacId = int()
self.shel = QgsPoint()
self.shelId = int()
self.evac_layer = QgsVectorLayer()
self.evac_feat = QgsFeature()
self.shel_layer = QgsVectorLayer()
self.shel_feat = QgsFeature()
self.select_POI.clicked.connect(self.enterEvac)
self.emitEvac.canvasClicked.connect(self.getEvac)
self.desel_POI.clicked.connect(self.deleteEvac)
self.select_shelter.setEnabled(False)
self.select_shelter.clicked.connect(self.enterShel)
self.emitShel.canvasClicked.connect(self.getShel)
self.shortestRouteButton.setEnabled(False)
self.shortestRouteButton.clicked.connect(self.buildNetwork)
self.shortestRouteButton.clicked.connect(self.calculateRoute)
self.network_layer = QgsVectorLayer()
self.tied_points = []
self.to_evac_info.setVerticalHeaderLabels(
["Type", "Name", "Address", "Population", "Dist from Attack(m)"])
self.shelter_info.setVerticalHeaderLabels(
["Type", "Name", "Address", "Capacity", "Route distance (m)"])
# Open wiki
self.to_wiki1.clicked.connect(self.open_wiki)
self.big_button.clicked.connect(self.evacuateThis)
self.savelog.clicked.connect(self.saveLog)
self.big_button.setEnabled(False)
self.warning_msg.setVisible(False)
self.show_selected.clicked.connect(self.showSelected)
self.hide_selected.clicked.connect(self.hideSelected)
self.save_map.pressed.connect(self.showSelected)
self.save_map.released.connect(self.saveMap)
self.savelog.clicked.connect(self.timerMessage)
self.save_map.released.connect(self.timerMessage)
self.saved_msg.setVisible(False)
self.sent_msg.setVisible(False)
def closeEvent(self, event):
# disconnect interface signal
self.closingPlugin.emit()
event.accept()
##Functions##
#Open Scenario
def openScenario(self, filename=""):
self.iface.addProject(
unicode(self.plugin_dir + "/data/Evacu8_dataset_new.qgs"))
self.set_rad.setEnabled(False)
self.tabs.setTabEnabled(1, False)
self.scen_info.clear()
self.scen_info.insertHtml(self.input_template)
self.buildings.clear()
self.log.clear()
# Attack Point
def enterPoi(self):
if not (QgsMapLayerRegistry.instance().mapLayersByName('Attack Point')
):
# remember currently selected tool
self.userTool = self.canvas.mapTool()
# activate coordinate capture tool
self.canvas.setMapTool(self.emitPoint)
def getPoint(self, mapPoint):
self.set_rad.setEnabled(True)
# change tool so you don't get more than one POI
self.canvas.unsetMapTool(self.emitPoint)
self.canvas.setMapTool(self.userTool)
# Get the click
if mapPoint:
self.atk_pt = QgsPoint(mapPoint)
self.distance()
# Specify the geometry type
layer = QgsVectorLayer('Point?crs=epsg:28992', 'Attack Point',
'memory')
style = "style_attack.qml"
qml_path = self.plugin_dir + "/data/" + style
layer.loadNamedStyle(qml_path)
layer.triggerRepaint()
# Set the provider to accept the data source
prov = layer.dataProvider()
# Add a new feature and assign the geometry
feat = QgsFeature()
feat.setGeometry(QgsGeometry.fromPoint(mapPoint))
prov.addFeatures([feat])
# Update extent of the layer
layer.updateExtents()
# Add the layer to the Layers panel
QgsMapLayerRegistry.instance().addMapLayers([layer])
# Add distance from point to Attack Point as attribute
def distance(self):
layers = ["POI_Evacu8"]
for layer in layers:
vl = uf.getLegendLayerByName(self.iface, layer)
uf.addFields(vl, ['distance'], [QVariant.Double])
index = vl.fieldNameIndex('distance')
feats = vl.getFeatures()
dist = QgsDistanceArea()
vl.startEditing()
for feat in feats:
geom = feat.geometry()
pt = geom.asPoint()
m = dist.measureLine(self.atk_pt, pt) // 1
vl.changeAttributeValue(feat.id(), index, m)
vl.commitChanges()
# Duplicate POI layer
def dup_layer(self, crs, names):
for name in names:
layer = uf.getLegendLayerByName(self.iface, "POI_Evacu8")
layer_type = {'0': 'Point', '1': 'LineString', '2': 'Polygon'}
mem_layer = QgsVectorLayer(
layer_type[str(layer.geometryType())] + "?crs=epsg:" +
str(crs), name, "memory")
feats = [feat for feat in layer.getFeatures()]
mem_layer_data = mem_layer.dataProvider()
attr = layer.dataProvider().fields().toList()
mem_layer_data.addAttributes(attr)
mem_layer.updateFields()
mem_layer_data.addFeatures(feats)
QgsMapLayerRegistry.instance().addMapLayer(mem_layer)
# Load style
def load_style(self, names, styles):
for name, style in zip(names, styles):
layer = uf.getLegendLayerByName(self.iface, name)
qml_path = self.plugin_dir + "/data/" + style
layer.loadNamedStyle(qml_path)
layer.triggerRepaint()
# Select and delete
def intersectANDdelete(self):
lay1 = uf.getLegendLayerByName(self.iface, "Perimeter")
lay2 = uf.getLegendLayerByName(self.iface, "Shelters")
lay3 = uf.getLegendLayerByName(self.iface, "Buildings to evacuate")
if lay1 and lay2:
to_delete = uf.getFeaturesByIntersection(lay2, lay1, True)
lay2.startEditing()
for feat in to_delete:
lay2.deleteFeature(feat.id())
lay2.commitChanges()
if lay1 and lay3:
to_delete2 = uf.getFeaturesByIntersection(lay3, lay1, False)
lay3.startEditing()
for feat in to_delete2:
lay3.deleteFeature(feat.id())
lay3.commitChanges()
# Get inserted buffer
def getBufferCutoff(self):
buffer = self.buff_area.text()
if uf.isNumeric(buffer):
return uf.convertNumeric(buffer)
else:
return 0
# Make buffer layer
def calculateBuffer(self):
layer = uf.getLegendLayerByName(self.iface, "Attack Point")
origins = layer.getFeatures()
if origins > 0:
cutoff_distance = self.getBufferCutoff()
if cutoff_distance:
if (QgsMapLayerRegistry.instance().mapLayersByName("Perimeter")
):
buffer_layer = uf.getLegendLayerByName(
self.iface, "Perimeter")
QgsMapLayerRegistry.instance().removeMapLayer(
buffer_layer.id())
buffers = {}
for point in origins:
geom = point.geometry()
buffers[point.id()] = geom.buffer(cutoff_distance,
12).asPolygon()
# store the buffer results in temporary layer called "Perimeter"
buffer_layer = uf.getLegendLayerByName(self.iface, "Perimeter")
# Create one if it doesn't exist
if not buffer_layer:
attribs = ['id', 'distance']
types = [QtCore.QVariant.String, QtCore.QVariant.Double]
buffer_layer = uf.createTempLayer(
'Perimeter', 'POLYGON',
layer.crs().postgisSrid(), attribs, types, 70)
uf.loadTempLayer(buffer_layer)
buffer_layer.setLayerName('Perimeter')
symbols = buffer_layer.rendererV2().symbols()
symbol = symbols[0]
symbol.setColor(QColor.fromRgb(220, 220, 0))
# Insert buffer polygons
geoms = []
values = []
for buffer in buffers.iteritems():
# Each buffer has an id and a geometry
geoms.append(buffer[1])
# In the case of values, it expects a list of multiple values in each item - list of lists
values.append([buffer[0], cutoff_distance])
uf.insertTempFeatures(buffer_layer, geoms, values)
self.refreshCanvas(buffer_layer)
extent = buffer_layer.extent()
self.canvas.setExtent(extent)
layers = ["road_net"]
for layer in layers:
vl = uf.getLegendLayerByName(self.iface, layer)
iface.legendInterface().setLayerVisible(vl, True)
# Make half transparent Open Street Map
rlayer = uf.getLegendLayerByName(self.iface, "OpenStreetMap")
rlayer.renderer().setOpacity(0.5) # 0.5 = 50%; 0.1 = 90%...
rlayer.triggerRepaint()
# Jump to tab 2
self.tabs.setTabEnabled(1, True)
self.tabs.setCurrentIndex(1)
self.scrollArea.verticalScrollBar().setValue(0)
# If POIs in and out already exist, remove them
check_layer = uf.getLegendLayerByName(self.iface,
"Buildings to evacuate")
check_layer2 = uf.getLegendLayerByName(self.iface, "Shelters")
if check_layer:
QgsMapLayerRegistry.instance().removeMapLayer(
check_layer.id())
QgsMapLayerRegistry.instance().removeMapLayer(
check_layer2.id())
self.buildings.clear()
if buffer_layer:
names = ["Buildings to evacuate", "Shelters"]
styles = ["style.qml", "style2.qml"]
self.dup_layer(28992, names)
self.load_style(names, styles)
self.intersectANDdelete()
build = uf.getLegendLayerByName(iface,
"Buildings to evacuate")
feats = build.getFeatures()
n = 0
for feat in feats:
if feat.attributes(
)[2] != 'police' and feat.attributes(
)[2] != 'fire_station':
n += 1
self.buildings.append('%s' % n)
# Making notes and sending to livechat
def getNotes(self):
notes = self.scen_info.toHtml()
return notes
def sendNotes(self):
input_data = self.getNotes()
if len(input_data) == 1042:
return
time = strftime("%d-%m-%Y %H:%M:%S", localtime())
new_notes = time + ": " + input_data + "\n"
old_notes = self.live_chat.toHtml()
self.live_chat.clear()
self.live_chat.insertHtml(new_notes)
self.live_chat.append("\n")
self.live_chat.insertHtml(old_notes)
self.live_chat.moveCursor(QtGui.QTextCursor.Start)
# Set danger polygon
def setDangerZone(self):
self.canvas.setMapTool(self.toolPoly)
def getDangerZone(self):
self.canvas.unsetMapTool(self.toolPoly)
def delDangerZone(self):
self.canvas.unsetMapTool(self.toolPoly)
self.canvas.setMapTool(self.emitDel)
def get_del(self, delete):
self.canvas.unsetMapTool(self.emitDel)
if delete:
layer = "Danger Zones"
min_dist = QgsDistanceArea()
vl = uf.getLegendLayerByName(self.iface, layer)
point = QgsPoint(delete)
feats = vl.getFeatures()
for feat in feats:
geom = feat.geometry()
pt = geom.centroid().asPoint()
dist = QgsDistanceArea().measureLine(point, pt)
if dist < min_dist:
min_dist = dist
fid = feat.id()
vl.startEditing()
vl.deleteFeature(fid)
vl.commitChanges()
# Picking to_evac buildings and shelters
def enterEvac(self):
self.canvas.setMapTool(self.emitEvac)
def getEvac(self, evac):
self.canvas.unsetMapTool(self.emitEvac)
self.select_POI.setEnabled(False)
self.select_shelter.setEnabled(True)
if evac:
self.evac = QgsPoint(evac)
self.evac_layer, self.evac_feat = self.select(self.evac)
self.to_evac_table()
def select(self, point):
layers = ["Buildings to evacuate", "Shelters"]
min_dist = QgsDistanceArea()
min_layer = QgsVectorLayer()
for layer in layers:
vl = uf.getLegendLayerByName(self.iface, layer)
feats = vl.getFeatures()
for feat in feats:
geom = feat.geometry()
pt = geom.asPoint()
dist = QgsDistanceArea().measureLine(point, pt)
if dist < min_dist:
min_dist = dist
min_feat = feat
min_id = feat.id()
min_layer = vl
min_layer.select(min_id)
self.canvas.setSelectionColor(QColor("red"))
self.canvas.refresh()
return min_layer, min_feat
def enterShel(self):
self.shortestRouteButton.setEnabled(False)
routes_layer = uf.getLegendLayerByName(self.iface, "Routes")
if routes_layer:
QgsMapLayerRegistry.instance().removeMapLayer(routes_layer.id())
if self.shel_layer:
self.shel_layer.deselect(self.shel_feat.id())
lineLayer = uf.getLegendLayerByName(iface, "road_net")
lineLayer.deselect(self.shelId)
self.canvas.setMapTool(self.emitShel)
def getShel(self, shel):
self.canvas.unsetMapTool(self.emitShel)
if shel:
self.shel = QgsPoint(shel)
self.shel_layer, self.shel_feat = self.select(self.shel)
self.shelter_table()
if self.evac and self.shel:
self.shortestRouteButton.setEnabled(True)
# Clear selection of to_evac and shelters
def deleteEvac(self):
routes_layer = uf.getLegendLayerByName(self.iface, "Routes")
if routes_layer:
QgsMapLayerRegistry.instance().removeMapLayer(routes_layer.id())
lineLayer = uf.getLegendLayerByName(iface, "road_net")
lineLayer.removeSelection()
layers = ["Buildings to evacuate", "Shelters"]
for layer in layers:
uf.getLegendLayerByName(self.iface, layer).removeSelection()
self.refreshCanvas(lineLayer)
item = ''
for i in range(5):
# i is the table row, items must be added as QTableWidgetItems
self.to_evac_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
self.shelter_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
self.select_POI.setEnabled(True)
self.select_shelter.setEnabled(False)
self.shortestRouteButton.setEnabled(False)
self.warning_msg.setVisible(False)
self.big_button.setEnabled(False)
# Route functions
def getNetwork(self):
roads_layer = uf.getLegendLayerByName(self.iface, "road_net")
if roads_layer:
# see if there is an obstacles layer to subtract roads from the network
obstacles_layer = uf.getLegendLayerByName(self.iface,
"Danger Zones")
if obstacles_layer:
# retrieve roads outside obstacles (inside = False)
features = uf.getFeaturesByIntersection(
roads_layer, obstacles_layer, False)
# add these roads to a new temporary layer
road_network = uf.createTempLayer(
'Temp_Network', 'LINESTRING',
roads_layer.crs().postgisSrid(), [], [])
road_network.dataProvider().addFeatures(features)
else:
road_network = roads_layer
return road_network
else:
return
def buildNetwork(self):
self.network_layer = self.getNetwork()
if self.network_layer:
# get the points to be used as origin and destination
# in this case gets the centroid of the selected features
selected_sources = uf.getLegendLayerByName(
self.iface, "road_net").selectedFeatures()
source_points = [self.evac, self.shel]
# build the graph including these points
if len(source_points) > 1:
self.graph, self.tied_points = uf.makeUndirectedGraph(
self.network_layer, source_points)
# the tied points are the new source_points on the graph
if self.graph and self.tied_points:
text = "network is built for %s points" % len(
self.tied_points)
return
def calculateRoute(self):
# origin and destination must be in the set of tied_points
options = len(self.tied_points)
if options > 1:
# origin and destination are given as an index in the tied_points list
origin = 0
destination = random.randint(1, options - 1)
# calculate the shortest path for the given origin and destination
path = uf.calculateRouteDijkstra(self.graph, self.tied_points,
origin, destination)
# store the route results in temporary layer called "Routes"
routes_layer = uf.getLegendLayerByName(self.iface, "Routes")
# create one if it doesn't exist
if not routes_layer:
attribs = ['id']
types = [QtCore.QVariant.String]
routes_layer = uf.createTempLayer(
'Routes', 'LINESTRING',
self.network_layer.crs().postgisSrid(), attribs, types)
style = "style_red_routes.qml"
qml_path = self.plugin_dir + "/data/" + style
routes_layer.loadNamedStyle(qml_path)
routes_layer.triggerRepaint()
uf.loadTempLayer(routes_layer)
# calculate route length
d = 0
for i in range(len(path) - 1):
pt1 = path[i]
pt2 = path[i + 1]
dx = pt2[0] - pt1[0]
dy = pt2[1] - pt1[1]
d += ((dx**2 + dy**2)**0.5) // 1
uf.insertTempFeatures(routes_layer, [path], [['testing']])
self.refreshCanvas(routes_layer)
self.shelter_info.setItem(4, 0, QtGui.QTableWidgetItem(unicode(d)))
lineLayer = uf.getLegendLayerByName(iface, "road_net")
lineLayer.deselect(self.shelId)
self.refreshCanvas(lineLayer)
self.big_button.setEnabled(True)
# Set ROUTE text color Red
self.shelter_info.item(4, 0).setTextColor(QColor(255, 0, 0))
# After adding features to layers, needs a refresh (sometimes)
def refreshCanvas(self, layer):
if self.canvas.isCachingEnabled():
layer.setCacheImage(None)
else:
self.canvas.refresh()
# Displaying POI information
def to_evac_table(self):
tent_values = self.evac_feat.attributes()
indices = [2, 3, 7, 8, 9]
values = [tent_values[i] for i in indices]
# takes a list of label / value pairs, can be tuples or lists. not dictionaries to control order
for i, item in enumerate(values):
# i is the table row, items must be added as QTableWidgetItems
self.to_evac_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
def shelter_table(self):
tent_values = self.shel_feat.attributes()
indices = [2, 3, 7, 8]
values = [tent_values[i] for i in indices]
# takes a list of label / value pairs, can be tuples or lists. not dictionaries to control order
for i, item in enumerate(values):
# i is the table row, items must tbe added as QTableWidgetItems
self.shelter_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
cap = values[3]
pop = int(self.to_evac_info.item(3, 0).text())
if cap - pop < 0:
self.warning_msg.setVisible(True)
else:
self.warning_msg.setVisible(False)
# Open the wiki
def open_wiki(self):
webbrowser.open(
'https://github.com/fhb1990/GEO1005_2017-18_group3/wiki/06.-Plugin-manual'
)
# Combine toEvacuate building and shelter
def evacuateThis(self):
# Write to log
time = strftime("%d-%m-%Y %H:%M:%S", localtime())
evac_type = self.to_evac_info.item(0, 0).text()
to_evac = self.to_evac_info.item(1, 0).text()
adr = self.to_evac_info.item(2, 0).text()
pop = int(self.to_evac_info.item(3, 0).text())
log_str = time + ":" + "\nBuilding selected for evacuation." \
"\nType:\t%s\nName:\t%s\nAddress:\t%s\nPredicted pop:\t%d\n" %(evac_type, to_evac, adr, pop)
self.log.append(log_str)
evac_type = self.shelter_info.item(0, 0).text()
to_evac = self.shelter_info.item(1, 0).text()
adr = self.shelter_info.item(2, 0).text()
log_str = "Evacuate to:\nType:\t%s\nName:\t%s\nAddress:\t%s\n" % (
evac_type, to_evac, adr)
self.log.append(log_str)
# Mark things as DONE
if not (uf.getLegendLayerByName(self.iface, "Done")):
done = QgsVectorLayer('Point?crs=epsg:28992', 'Done', 'memory')
QgsMapLayerRegistry.instance().addMapLayers([done])
style = "style for green marks.qml"
qml_path = self.plugin_dir + "/data/" + style
done.loadNamedStyle(qml_path)
done.triggerRepaint()
prov = uf.getLegendLayerByName(self.iface, "Done").dataProvider()
prov.addFeatures([self.evac_feat])
self.refreshCanvas(uf.getLegendLayerByName(self.iface, "Done"))
# Store Selected Routes
lay1 = uf.getLegendLayerByName(self.iface, "Selected Routes")
if not (lay1):
selected = QgsVectorLayer('LINESTRING?crs=epsg:28992',
'Selected Routes', 'memory')
QgsMapLayerRegistry.instance().addMapLayers([selected])
style = "style_blue_routes.qml"
qml_path = self.plugin_dir + "/data/" + style
selected.loadNamedStyle(qml_path)
selected.triggerRepaint()
iface.legendInterface().setLayerVisible(selected, False)
prov = uf.getLegendLayerByName(self.iface,
"Selected Routes").dataProvider()
if uf.getLegendLayerByName(self.iface, "Routes"):
route_layer = uf.getLegendLayerByName(self.iface, "Routes")
feats = route_layer.getFeatures()
for feat in feats:
prov.addFeatures([feat])
self.refreshCanvas(
uf.getLegendLayerByName(self.iface, "Selected Routes"))
uf.addFields(lay1, ['number'], [QVariant.Int])
uf.updateField(lay1, 'number', 'rand(1,100)')
# Lower capacity of shelter
layer = uf.getLegendLayerByName(self.iface, "Shelters")
layer.startEditing()
cap = int(self.shelter_info.item(3, 0).text())
m = cap - pop
if m > 0:
layer.changeAttributeValue(self.shel_feat.id(), 8, cap - pop)
else:
layer.changeAttributeValue(self.shel_feat.id(), 8, 0)
layer.commitChanges()
# Change Number of Buildings to Evacuate
build = uf.getLegendLayerByName(iface, "Buildings to evacuate")
buildings = build.getFeatures()
n = 0
for building in buildings:
if building.attributes()[2] != 'police' and building.attributes(
)[2] != 'fire_station':
n += 1
ev = uf.getLegendLayerByName(iface, "Selected Routes")
evacs = ev.getFeatures()
m = 0
for evac in evacs:
m += 1
self.buildings.clear()
if n - m > 0:
self.buildings.append('%s' % (n - m))
else:
self.buildings.append('0')
# Display confirmation message
self.sent_msg.setVisible(True)
QTimer.singleShot(3000, lambda: (self.sent_msg.setVisible(False)))
# Clear selections to start picking new targets
self.deleteEvac()
# Save the log to desktop
def saveLog(self):
log_text = self.log.toPlainText()
# path = 'C:/Users/'+os.getenv('USERNAME')+'/Desktop/Evacu8_log.txt'
path1 = os.path.join(os.path.expanduser('~'),
'Desktop') + '/Evacu8_log.txt'
print path1
with open(path1, "w") as fh:
fh.write("%s" % (log_text))
# Show all the chosen routes on the map
def showSelected(self):
selected = uf.getLegendLayerByName(self.iface, "Selected Routes")
if selected:
iface.legendInterface().setLayerVisible(selected, True)
# Hide all the chosen routes on the map
def hideSelected(self):
selected = uf.getLegendLayerByName(self.iface, "Selected Routes")
if selected:
iface.legendInterface().setLayerVisible(selected, False)
# Save the shown canvas to desktop
def saveMap(self):
#filename = 'C:/Users/' + os.getenv('USERNAME') + '/Desktop/Evacu8_log.png'
filename1 = os.path.join(os.path.expanduser('~'),
'Desktop') + '/Evacu8_log.png'
self.showSelected()
if filename1 != '':
self.canvas.saveAsImage(filename1, None, "PNG")
# Show "saved to desktop" message for 2 seconds
def timerMessage(self):
self.saved_msg.setVisible(True)
QTimer.singleShot(2000, lambda: (self.saved_msg.setVisible(False)))
def saveCurva(self):
self.layer: QgsVectorLayer
self.comboCurva: QtWidgets.QComboBox
self.draw()
if self.curvaFailed:
return
curvaFeats = featuresList(self.c.layer)
features = []
if hasattr(self, "justStarted") and self.justStarted:
i = 0
for f, tipo in zip(curvaFeats, self.c.dados):
feat = QgsFeature(self.layer.fields())
feat.setGeometry(f.geometry())
feat.setAttributes([i, str(tipo[0]), "Traçado"])
features.append(feat)
i += 1
self.justStarted = False
elif len(curvaFeats) > 0:
fid = 1
nomes = []
#Delete all features of self.layer and add layer geometry in between
for i, feat in enumerate(self.layer.getFeatures()):
if i > self.current_index and i < self.next_index:
continue
f = QgsFeature(self.layer.fields())
attr = feat.attributes()
attr[0] = len(features) + 1
f.setAttributes(attr)
if i == self.current_index:
PI = p2QgsPoint(featureToPolyline(curvaFeats[0])[0])
f.setGeometry(
QgsGeometry.fromPolyline(
[p2QgsPoint(featureToPolyline(feat)[0]), PI]))
features.append(f)
for i, cf in enumerate(curvaFeats):
f = QgsFeature(self.layer.fields())
attr = cf.attributes()
attr = [len(features) + 1] + attr
f.setAttributes(attr)
f.setGeometry(cf.geometry())
features.append(f)
if i == 0: nomes.append(str(attr[1]))
nomes.append(str(attr[1]))
elif i == self.next_index:
PF = p2QgsPoint(featureToPolyline(curvaFeats[-1])[-1])
f.setGeometry(
QgsGeometry.fromPolyline(
[PF, p2QgsPoint(featureToPolyline(feat)[-1])]))
features.append(f)
else:
f.setGeometry(feat.geometry())
features.append(f)
self.layer.dataProvider().deleteFeatures(
[f.id() for f in self.layer.getFeatures()])
self.layer.dataProvider().addFeatures(features)
self.layer.updateExtents()
try:
QgsProject.instance().removeMapLayer(self.c.layer.id())
except:
pass
refreshCanvas(self.iface, self.layer)