class SplineTool():
def __init__(self, iface, toolBar):
# Save reference to the QGIS interface
self.iface = iface
self.canvas = self.iface.mapCanvas()
self.layer = self.iface.activeLayer()
self.mc = self.canvas
self.tool = None
# Create actions
self.action_spline = QAction(
QIcon(":/plugins/cadtools/icons/spline.png"),
QCoreApplication.translate("ctools",
"Create Spline Lines/Polygons"),
self.iface.mainWindow())
self.action_spline.setCheckable(True)
try:
if self.layer.isEditable():
self.action_spline.setEnabled(True)
self.layer.editingStopped.connect(self.toggle)
except:
pass
else:
self.action_spline.setEnabled(False)
self.layer.editingStarted.connect(self.toggle)
# Connect to signals for button behaviour
self.count = 0
self.count += 1
if self.count == 1:
self.action_spline.triggered.connect(self.digitize)
self.count -= 1
if self.count == 0:
self.canvas.mapToolSet.connect(self.deactivate)
self.count += 1
# self.iface.currentLayerChanged.connect(self.toggle)
# Add actions to the toolbar
toolBar.addSeparator()
toolBar.addAction(self.action_spline)
# Get the tool
self.tool = Spline(self.iface)
def digitize(self):
layer = self.mc.currentLayer()
self.action_spline.setChecked(True)
if self.action_spline.isChecked():
self.mc.setMapTool(self.tool)
print 'call'
self.count -= 1
def deactivate(self):
if self.count == 0:
self.action_spline.setChecked(False)
self.mc.unsetMapTool(self.tool)
print 'tool'
else:
self.count = 1
pass
def toggle(self):
if self.layer:
# disconnect all previously connect signals in current layer
try:
self.layer.editingStarted.disconnect(self.toggle)
except:
pass
try:
self.layer.editingStopped.disconnect(self.toggle)
except:
pass
# check if current layer is editable and has selected features
# and decide whether the plugin button should be enable or disable
if self.layer.isEditable():
self.action_spline.setEnabled(True)
# self.action_spline.setChecked(True)
self.layer.editingStopped.connect(self.toggle)
# layer is not editable
else:
self.action_spline.setEnabled(False)
# self.action_spline.setChecked(False)
self.layer.editingStarted.connect(self.toggle)
# self.mc.mapToolSet.connect(self.deactivate)
else:
self.action_spline.setEnabled(False)
# self.mc.mapToolSet.connect(self.deactivate)
# self.action_spline.setChecked(True)
def settingsChanged(self):
self.tool.refresh()
class SplineTool():
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
self.canvas = self.iface.mapCanvas()
mc = self.canvas
self.tool = None
self.connectedLayer = None
# Create actions
self.action_spline = QAction(
QIcon(":/plugins/spline/icon.png"),
QCoreApplication.translate("spline", "Digitize Spline Curves"),
self.iface.mainWindow())
self.action_spline.setObjectName("actionSpline")
self.action_spline.setEnabled(False)
self.action_spline.setCheckable(True)
# Get the tool
self.tool = Spline(self.iface)
# Connect to signals for button behaviour
self.action_spline.triggered.connect(self.digitize)
self.iface.currentLayerChanged.connect(self.layerChanged)
self.layerChanged() # to enable when plugin is loaded
mc.mapToolSet.connect(self.deactivate)
# Add actions to the toolbar
self.iface.addToolBarIcon(self.action_spline)
def __del__(self):
self.disconnectLayer()
self.iface.removeToolBarIcon(self.action_spline)
def digitize(self):
mc = self.canvas
layer = mc.currentLayer()
mc.setMapTool(self.tool)
self.action_spline.setChecked(True)
# get current layer if it is line or polygon, otherwise None
def getLayer(self):
layer = self.canvas.currentLayer()
if layer is None: return None
if layer.type() != QgsMapLayer.VectorLayer: return None
if not layer.geometryType() in [QGis.Line, QGis.Polygon]: return None
return layer
def enableAction(self):
self.action_spline.setEnabled(False)
layer = self.getLayer()
if layer:
self.action_spline.setEnabled(layer.isEditable())
def layerChanged(self):
self.tool.deactivate()
self.enableAction()
self.disconnectLayer()
self.connectLayer(self.getLayer())
def connectLayer(self, layer):
if layer is None: return
self.connectedLayer = layer
layer.editingStopped.connect(self.enableAction)
layer.editingStarted.connect(self.enableAction)
def disconnectLayer(self):
if self.connectedLayer is None: return
self.connectedLayer.editingStopped.disconnect(self.enableAction)
self.connectedLayer.editingStarted.disconnect(self.enableAction)
self.connectedLayer = None
def deactivate(self):
self.action_spline.setChecked(False)
def settingsChanged(self):
self.tool.refresh()
class SplineTool():
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
self.canvas = self.iface.mapCanvas()
mc = self.canvas
self.tool = None
self.connectedLayer = None
# Create actions
self.action_spline = QAction(QIcon(":/plugins/spline/icon.png"), QCoreApplication.translate("spline", "Digitize Spline Curves"), self.iface.mainWindow())
self.action_spline.setObjectName("actionSpline")
self.action_spline.setEnabled(False)
self.action_spline.setCheckable(True)
# Get the tool
self.tool = Spline(self.iface)
# Connect to signals for button behaviour
self.action_spline.triggered.connect(self.digitize)
self.iface.currentLayerChanged.connect(self.layerChanged)
self.layerChanged() # to enable when plugin is loaded
mc.mapToolSet.connect(self.deactivate)
# Add actions to the toolbar
self.iface.addToolBarIcon(self.action_spline)
def __del__(self):
self.disconnectLayer()
self.iface.removeToolBarIcon(self.action_spline)
def digitize(self):
mc = self.canvas
layer = mc.currentLayer()
mc.setMapTool(self.tool)
self.action_spline.setChecked(True)
# get current layer if it is line or polygon, otherwise None
def getLayer(self):
layer = self.canvas.currentLayer()
if layer is None: return None
if layer.type() != QgsMapLayer.VectorLayer: return None
if not layer.geometryType() in [ QGis.Line, QGis.Polygon ]: return None
return layer
def enableAction(self):
self.action_spline.setEnabled(False)
layer = self.getLayer()
if layer:
self.action_spline.setEnabled( layer.isEditable() )
def layerChanged(self):
self.tool.deactivate()
self.enableAction()
self.disconnectLayer()
self.connectLayer( self.getLayer() )
def connectLayer(self, layer):
if layer is None: return
self.connectedLayer = layer
layer.editingStopped.connect(self.enableAction)
layer.editingStarted.connect(self.enableAction)
def disconnectLayer(self):
if self.connectedLayer is None: return
self.connectedLayer.editingStopped.disconnect(self.enableAction)
self.connectedLayer.editingStarted.disconnect(self.enableAction)
self.connectedLayer = None
def deactivate(self):
self.action_spline.setChecked(False)
def settingsChanged(self):
self.tool.refresh()
