wxGUI: auto-zomming to selected layer implemented

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@37029 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/mapdisp_window.py

@@ -2384,25 +2384,29 @@ class BufferedWindow(MapWindow, wx.Window):
         """
         Set display extents to match selected raster map (ignore NULLs)
         """
-        self.ZoomToMap(zoom=True)
+        self.ZoomToMap(ignoreNulls = True)
         
-    def ZoomToMap(self, layer = None, zoom = False):
+    def ZoomToMap(self, layers = None, ignoreNulls = False, render = True):
         """
         Set display extents to match selected raster
-        or vector map.
+        or vector map(s).
+
+        @param layer list of layers to be zoom to
+        @param ignoreNulls True to ignore null-values
+        @param render True to re-render display
         """
         zoomreg = {}
 
-        if not layer:
-            layer = self.GetSelectedLayer(multi = True)
+        if not layers:
+            layers = self.GetSelectedLayer(multi = True)
         
-        if not layer:
+        if not layers:
             return
         
         rast = []
         vect = []
         updated = False
-        for l in layer:
+        for l in layers:
             # only raster/vector layers are currently supported
             if l.type == 'raster':
                 rast.append(l.name)
@@ -2423,8 +2427,9 @@ class BufferedWindow(MapWindow, wx.Window):
         
         self.ZoomHistory(self.Map.region['n'], self.Map.region['s'],
                          self.Map.region['e'], self.Map.region['w'])
-
-        self.UpdateMap()
+        
+        if render:
+            self.UpdateMap()
 
         self.parent.StatusbarUpdate()
         

gui/wxpython/gui_modules/preferences.py

@@ -104,6 +104,9 @@ class Settings:
                 'autoRendering': {
                     'enabled' : False
                     },
+                'autoZooming' : {
+                    'enabled' : False
+                    },
                 'statusbarMode': {
                     'selection' : 0
                     },
@@ -1093,10 +1096,23 @@ class PreferencesDialog(wx.Dialog):
 
         gridSizer.Add(item=autoRendering,
                       pos=(row, 0), span=(1, 2))
+        
+        #
+        # auto-zoom
+        #
+        row += 1
+        autoZooming = wx.CheckBox(parent=panel, id=wx.ID_ANY,
+                                  label=_("Enable auto-zooming to selected map layer"),
+                                  name="IsChecked")
+        autoZooming.SetValue(self.settings.Get(group='display', key='autoZooming', subkey='enabled'))
+        self.winId['display:autoZooming:enabled'] = autoZooming.GetId()
+
+        gridSizer.Add(item=autoZooming,
+                      pos=(row, 0), span=(1, 2))
 
         sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
         border.Add(item=sizer, proportion=0, flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border=3)
-
+        
         panel.SetSizer(border)
         
         # bindings

gui/wxpython/gui_modules/toolbars.py

@@ -360,9 +360,7 @@ class GRToolbar(AbstractToolbar):
 
     def OnZoomMap(self, event):
         """Zoom to selected map"""
-        layer = self.mapcontent.GetListOfLayers()
-
-        self.mapdisplay.MapWindow.ZoomToMap(layer=layer)
+        self.mapdisplay.MapWindow.ZoomToMap(layers = self.mapcontent.GetListOfLayers())
 
         event.Skip()
         

gui/wxpython/gui_modules/wxgui_utils.py

@@ -1071,6 +1071,15 @@ class LayerTree(treemixin.DragAndDrop, CT.CustomTreeCtrl):
             cmd = self.GetPyData(layer)[0]['maplayer'].GetCmd(string=True)
             if len(cmd) > 0:
                 self.lmgr.SetStatusText(cmd)
+
+        # set region if auto-zooming is enabled
+        if self.GetPyData(layer) and self.GetPyData(layer)[0]['cmd'] and \
+               UserSettings.Get(group = 'display', key = 'autoZooming', subkey = 'enabled'):
+            mapLayer = self.GetPyData(layer)[0]['maplayer']
+            if mapLayer.GetType() in ('raster', 'vector'):
+                render = self.mapdisplay.autoRender.IsChecked()
+                self.mapdisplay.MapWindow.ZoomToMap(layers = [mapLayer,],
+                                                    render = render)
         
         #
         # update nviz tools
@@ -1280,6 +1289,14 @@ class LayerTree(treemixin.DragAndDrop, CT.CustomTreeCtrl):
         
         # change parameters for item in layers list in render.Map
         self.ChangeLayer(layer)
+
+        # set region if auto-zooming is enabled
+        if dcmd and UserSettings.Get(group = 'display', key = 'autoZooming', subkey = 'enabled'):
+            mapLayer = self.GetPyData(layer)[0]['maplayer']
+            if mapLayer.GetType() in ('raster', 'vector'):
+                render = UserSettings.Get(group = 'display', key = 'autoRendering', subkey = 'enabled')
+                self.mapdisplay.MapWindow.ZoomToMap(layers = [mapLayer,],
+                                                    render = render)
         
         if self.mapdisplay.toolbars['nviz'] and dcmd:
             # update nviz session