Add line control points before the end point

[wxWidgets.git] / wxPython / wx / lib / plot.py

diff --git a/wxPython/wx/lib/plot.py b/wxPython/wx/lib/plot.py
index b92577c769f30ee6d135cf27170d70c64f592b82..a5fbb89e98031198ddd9ec0784579b70eb617085 100644 (file)
--- a/wxPython/wx/lib/plot.py
+++ b/wxPython/wx/lib/plot.py
@@ -630,8 +630,8 @@ class PlotCanvas(wx.Window):
 
     def SetEnableGrid(self, value):
         """Set True to enable grid."""
-        if value not in [True,False]:
-            raise TypeError, "Value should be True or False"
+        if value not in [True,False,'Horizontal','Vertical']:
+            raise TypeError, "Value should be True, False, Horizontal or Vertical"
         self._gridEnabled= value
         self.Redraw()
 
@@ -689,9 +689,11 @@ class PlotCanvas(wx.Window):
     def ScrollUp(self, units):
         """Move view up number of axis units."""
         self.last_PointLabel = None        #reset pointLabel
-        if self.BeenDrawn():
-            self._drawCmd.scrollAxisY(units, self._ySpec)
-            self._draw()
+        if self.last_draw is not None:         
+             graphics, xAxis, yAxis= self.last_draw
+             yAxis= (yAxis[0]+units, yAxis[1]+units)
+             self.Draw(graphics,xAxis,yAxis)
+
         
     def GetXY(self,event):
         """Takes a mouse event and returns the XY user axis values."""
@@ -1025,7 +1027,9 @@ class PlotCanvas(wx.Window):
         # The Buffer init is done here, to make sure the buffer is always
         # the same size as the Window
         Size  = self.GetClientSize()
-
+        if Size.width <= 0 or Size.height <= 0:
+            return
+        
         # Make new offscreen bitmap: this bitmap will always have the
         # current drawing in it, so it can be used to save the image to
         # a file, or whatever.
@@ -1228,8 +1232,15 @@ class PlotCanvas(wx.Window):
         # set length of tick marks--long ones make grid
         if self._gridEnabled:
             x,y,width,height= self._point2ClientCoord(p1,p2)
-            yTickLength= width/2.0 +1
-            xTickLength= height/2.0 +1
+            if self._gridEnabled == 'Horizontal':
+                yTickLength= width/2.0 +1
+                xTickLength= 3 * self.printerScale
+            elif self._gridEnabled == 'Vertical':
+                yTickLength= 3 * self.printerScale
+                xTickLength= height/2.0 +1
+            else:
+                yTickLength= width/2.0 +1
+                xTickLength= height/2.0 +1
         else:
             yTickLength= 3 * self.printerScale  # lengthens lines for printing
             xTickLength= 3 * self.printerScale