[processing] Added extent parameter to RasterLayerBoundsAlgorithm.py

Author: volaya

python/plugins/processing/modeler/RasterLayerBoundsAlgorithm.py

@@ -29,7 +29,7 @@
 from processing.parameters.ParameterRaster import ParameterRaster
 from processing.outputs.OutputNumber import OutputNumber
 from processing.tools import dataobjects
-
+from processing.outputs.OutputExtent import OutputExtent
 
 class RasterLayerBoundsAlgorithm(GeoAlgorithm):
 
@@ -49,11 +49,17 @@ def defineCharacteristics(self):
         self.addOutput(OutputNumber(self.XMAX, 'max X'))
         self.addOutput(OutputNumber(self.YMIN, 'min Y'))
         self.addOutput(OutputNumber(self.YMAX, 'max Y'))
-
+        self.addOutput(OutputExtent(self.EXTENT, 'Extent'))
+        
     def processAlgorithm(self, progress):
         uri = self.getParameterValue(self.LAYER)
         layer = dataobjects.getObjectFromUri(uri)
         self.setOutputValue(self.XMIN, layer.extent().xMinimum())
         self.setOutputValue(self.XMAX, layer.extent().xMaximum())
         self.setOutputValue(self.YMIN, layer.extent().yMinimum())
         self.setOutputValue(self.YMAX, layer.extent().yMaximum())
+        self.setOutputValue(self.EXTENT, (layer.extent().xMinimum(),
+                            layer.extent().xMaximum(),
+                            layer.extent().yMinimum(),
+                            layer.extent().yMaximum()))
+