def on_scaleCheckBox_clicked(self):
     """
     set the earthquake symbols to proportional or standard based on checkbox state
     """
     layer = QgsMapLayerRegistry.instance().mapLayersByName("earthquakes")[0]
     field = self.scaleComboBox.currentText()
     state = self.scaleCheckBox.checkState()
     #If checkbox is checked, then set proportional symbols based on the field chosen
     if state:
         self.scaleComboBox.setEnabled(True)
         self.label_17.setEnabled(True)
         self.label_16.setEnabled(True)
         if field == "Magnitude":
             expression = "(Magnitude^3)/10"
         elif field == "latitude":
             expression = "abs(latitude)/5"
         else:
             expression = "abs(longitude)/5"
         colourManager().propSymbols(layer,  expression)
     #turn off proportional symbols
     else:
         colourManager().propSymbols(layer,  "2")
         self.scaleComboBox.setEnabled(False)
         self.label_17.setEnabled(False)
         self.label_16.setEnabled(False)
 def on_AddAttractionLayer_clicked(self):
     """
     add the tourist attraction layer to the mao
     """
     #check layer is valid
     attractions = AddLayers().CheckAddLayers(self.attractionLineEdit,  "tourist_attraction")
     # add layer to map canvas
     QgsMapLayerRegistry.instance().addMapLayer(attractions)
     
     #if valid, populate the combobox on the next page with types of attraction
     if attractions is not None:
         attractionTypes = colourManager().getAttributes("LEGEND",  attractions)
         self.fieldComboBox.addItems(attractionTypes)
         
         colorList = [QColor('#8dd3c7'), QColor('#ffffb3'), QColor('#bebada'), QColor('#fb8072'), QColor('#80b1d3'), QColor('#fdb462'), QColor('#b3de69'), QColor('#fccde5'), QColor('#d9d9d9'), QColor('#bc80bd'), QColor('#ccebc5'), QColor('#ffed6f'), QColor('#6699ff'),QColor('#ff1975'),QColor('#3399ff')]
         catList = []
         #apply a default colour scheme to the attractions based on attraction type
         for attraction in attractionTypes:
             colorIndex = attractionTypes.index(attraction)
             symbol = QgsSymbolV2.defaultSymbol(attractions.geometryType())
             symbol.setColor(colorList[colorIndex])
             cat = QgsRendererCategoryV2(attraction, symbol ,  str(attraction))
             catList.append(cat)
         
         renderer = QgsCategorizedSymbolRendererV2("LEGEND", catList)
         
         attractions.setRendererV2(renderer)
         
         #refresh map canvas and legend
         iface.mapCanvas().refresh()
         iface.legendInterface().refreshLayerSymbology(attractions)
         
         #make a legend table in the plugin
         colourManager().makeClassTable(attractions,  "LEGEND",  self.AttractionTableView)
 def on_StyleTypecomboBox_activated(self,  p0):
     """
     Enable or disable the column/colour ramp comboBoxes or the colour selection button depending on what style type is selected
     """
     
     style = self.StyleTypecomboBox.currentText()
     Countries = QgsMapLayerRegistry.instance().mapLayersByName("countries")[0]
     
     if style == "Single Colour":
         # Disable the categorised colour categories
         self.ColourRampcomboBox.setEnabled(False)
         self.ColumncomboBox.setEnabled(False)
         self.colourRampLabel.setEnabled(False)
         self.columnLabel.setEnabled(False)
         #enable the single colour button
         self.ChangeColourButton.setEnabled(True)
         #set the renderer to single symbol (i.e. all the same)
         symbol = QgsSymbolV2.defaultSymbol(Countries.geometryType())
         Countries.setRendererV2(QgsSingleSymbolRendererV2(symbol))
         #refresh the within-plugin legend
         model = QStandardItemModel(0, 0)
         model.clear()
         self.categoryTableView.setModel(model)
         
     else:
         #Enable the categorised colour categories
         self.ColourRampcomboBox.setEnabled(True)
         self.ColumncomboBox.setEnabled(True)
         self.colourRampLabel.setEnabled(True)
         self.columnLabel.setEnabled(True)
         # disable the single colour button
         self.ChangeColourButton.setEnabled(False) 
         #Populate the countries column comboBox with the layer fields that you can style by
         self.ColumncomboBox.clear()
         self.ColumncomboBox_2.clear()
         self.ColumncomboBox_3.clear()
         fields = Countries.pendingFields()
         fieldList = []
         for field in fields:
             fieldList.append(field.name())
         self.ColumncomboBox.addItems(fieldList[3:])
         self.ColumncomboBox_2.addItems(fieldList[3:])
         self.ColumncomboBox_3.addItems(fieldList[3:])
         #Ensure that the pop_group item is displayed by default
         self.ColumncomboBox_2.setCurrentIndex(2)
         #Populate the color ramp combobox with the names of the Color Brewer color ramp schemes
         self.ColourRampcomboBox.clear()
         self.ColourRampcomboBox_2.clear()
         rampNames = QgsVectorColorBrewerColorRampV2.listSchemeNames()
     
         for name in rampNames:
             self.ColourRampcomboBox.addItem(name)
             self.ColourRampcomboBox_2.addItem(name)
             self.ColourRampcomboBox_3.addItem(name)
             
             
         #self.makeClassTable()
         tableViews = [self.categoryTableView,  self.categoryTableView_2]
         colourManager().makeClassTable(Countries,  self.ColumncomboBox, tableViews)
 def on_lineColourButton_clicked(self):
     """
     Allow the user to select a single colour for the rivers layer
     """
     #get the layer name
     layerName = self.lineLyrComboBox.currentText()
     #update the colour of the layer symbols
     colourManager().updateSingleColour(layerName)
    def on_buttonBox_accepted(self):
        """
        Slot documentation goes here.
        """
        if self.svgDict != None:
            MagicMarkers().setSVG("tourist_attraction", self.attribute , self.scene,  self.svgDict)
            attractions = QgsMapLayerRegistry.instance().mapLayersByName("tourist_attraction")[0]
            colourManager().makeClassTable(attractions,  "LEGEND",  self.tableView)

        self.close()
 def on_scaleComboBox_activated(self,  p0):
     """
     scale earthquake symbols  based on the field chosen in scaleComboBox
     """
     layer = QgsMapLayerRegistry.instance().mapLayersByName("earthquakes")[0]
     field = self.scaleComboBox.currentText()
     #set expression for proportional areas based on chosen field
     if field == "Magnitude":
         expression = "(Magnitude^3)/10"
     elif field == "latitude":
         expression = "abs(latitude)/5"
     else:
         expression = "abs(longitude)/5"
     #make symbols proportional
     colourManager().propSymbols(layer,  expression)
 def on_bufferColourButton_clicked(self):
     """
     change the colour of the buffer layer
     """
     #set up message box
     msgBox=QMessageBox()
     msgBox.setIcon(3)
     
     #If a buffer layer has been created, update the colours
     if self.bufferLayer is not None:
         colourManager().updateSingleColour(self.bufferLayer)
     #if not bring up a message box
     else:
         msgBox.setText("Could not re-colour the layer")
         msgBox.setInformativeText(" QGISforSchools cannot find the buffer layer. Try going back a step and making a new one.")
         msgBox.exec_()
     
     SpatialQuery().populateSrcBox(self.inputComboBox_2,  self.refComboBox)
     SpatialQuery().populateSrcBox(self.lyrComboBox)
 def on_ColumncomboBox_3_activated(self,  p0):
     """
     Change classified values based on selected column
     """
     colourManager().changeColumnColor("countries",  self.ColumncomboBox_3,  self.ColourRampcomboBox_3)
     colourManager().changeColumnColor("obesity",  self.obesityColumncomboBox,  self.ColourRampcomboBox_3)
     colourManager().make3ClassTable("countries",  "obesity",  self.ColumncomboBox_3,  self.obesityColumncomboBox,  self.obesityTableView)
 def on_ColourRampcomboBox_3_activated(self,  p0):
     """
     classify the chosen field and colour each class based on the colour ramp selected
     """
     colourManager().changeColumnColor("countries",  self.ColumncomboBox_3,  self.ColourRampcomboBox_3)
     colourManager().changeColumnColor("obesity",  self.obesityColumncomboBox,  self.ColourRampcomboBox_3)
     colourManager().make3ClassTable("countries",  "obesity",  self.ColumncomboBox_3,  self.obesityColumncomboBox,  self.obesityTableView)
 def on_ColourRampcomboBox_activated(self,  p0):
     """
     classify the chosen field and colour each class based on the colour ramp selected
     """
     tableViews = self.earthquakeTableView
     colourManager().setGraduatedColour("earthquakes",  self.ColumncomboBox,  self.ColourRampcomboBox, 5, tableViews)
示例#11
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 def on_ChangeColourButton_clicked(self):
     """
     Allow the user to select a single colour for the Countries layer
     """
     colourManager().updateSingleColour("countries")
示例#12
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 def on_ColumncomboBox_2_activated(self,  p0):
     """
     Change classified values based on selected column
     """
     tableViews = [self.categoryTableView,  self.categoryTableView_2]
     colourManager().changeColumnColor("countries",  self.ColumncomboBox_2,  self.ColourRampcomboBox_2,  tableViews)
示例#13
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 def on_ColourRampcomboBox_2_activated(self,  p0):
     """
     classify the chosen field and colour each class based on the colour ramp selected
     """
     tableViews = [self.categoryTableView,  self.categoryTableView_2]
     colourManager().changeColumnColor("countries",  self.ColumncomboBox_2,  self.ColourRampcomboBox_2,  tableViews)
示例#14
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 def on_woodColourButton_clicked(self):
     """
     Allow the user to select a single colour for the woodland layer
     """
     colourManager().updateSingleColour("woodland",  True)
 def on_ColumncomboBox_activated(self,  p0):
     """
     Change classified values based on selected column
     """
     tableViews = self.earthquakeTableView
     colourManager().setGraduatedColour("earthquakes",  self.ColumncomboBox,  self.ColourRampcomboBox, 5, tableViews)
示例#16
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 def on_stationColour_clicked(self):
     """
     Allow the user to select a single colour for the station points
     """
     colourManager().updateSingleColour("railway_station")
示例#17
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 def on_urbanColourButton_clicked(self):
     """
     Allow the user to select a single colour for the buildings layer
     """
     colourManager().updateSingleColour("buildings",  True)
示例#18
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 def on_riverColourButton_clicked(self):
     """
     Allow the user to select a single colour for the rivers layer
     """
     colourManager().updateSingleColour("rivers")