SF.net SVN: matplotlib: [4287] trunk/matplotlib/lib/matplotlib/backends/ backend_wx.py

[<md...@us...>]

Revision: 4287
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4287&view=rev
Author:   mdboom
Date:     2007-11-14 11:06:52 -0800 (Wed, 14 Nov 2007)

Log Message:
-----------
Fix placement of rotated text in Wx backend (thanks Michael Day).

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/backends/backend_wx.py

Modified: trunk/matplotlib/lib/matplotlib/backends/backend_wx.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_wx.py	2007-11-14 18:44:39 UTC (rev 4286)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_wx.py	2007-11-14 19:06:52 UTC (rev 4287)
@@ -381,7 +381,12 @@
         y = int(y-h)
 
         if angle!=0:
-            try: gc.DrawRotatedText(s, x, y, angle)
+            # Correct for the fact that text if rotated around the upper-left corner,
+            # rather than the lower-left corner as we expect.
+            rads = angle / 180.0 * math.pi
+            xo = h * math.sin(rads)
+            yo = h * math.cos(rads)
+            try: gc.DrawRotatedText(s, x - xo, y - yo, angle)
             except:
                 verbose.print_error(exception_to_str('WX rotated text failed'))
         else:


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