[processing] add cancellation support where possible

qgis · Jul 17, 2017 · 95de3a4 · 95de3a4
1 parent 5af177e
commit 95de3a4
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diff --git a/python/plugins/processing/algs/qgis/ShortestPathLayerToPoint.py b/python/plugins/processing/algs/qgis/ShortestPathLayerToPoint.py
@@ -237,6 +237,9 @@ def processAlgorithm(self, parameters, context, feedback):
 
         total = 100.0 / source.featureCount() if source.featureCount() else 1
         for i in range(1, count + 1):
+            if feedback.isCanceled():
+                break
+
             idxStart = graph.findVertex(snappedPoints[i])
             tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
 

diff --git a/python/plugins/processing/algs/qgis/ShortestPathPointToLayer.py b/python/plugins/processing/algs/qgis/ShortestPathPointToLayer.py
@@ -238,6 +238,9 @@ def processAlgorithm(self, parameters, context, feedback):
 
         total = 100.0 / source.featureCount() if source.featureCount() else 1
         for i in range(1, count + 1):
+            if feedback.isCanceled():
+                break
+
             idxEnd = graph.findVertex(snappedPoints[i])
 
             if tree[idxEnd] == -1: