Fixed another flipy bug in tkagg blitting.

svn path=/trunk/matplotlib/; revision=1883

Author: cmoad

CHANGELOG

@@ -1,3 +1,5 @@
+2005-11-28 Got TkAgg blitting working 100% (cross fingers) correctly. - CM
+
 2005-11-27 Multiple changes in cm.py, colors.py, figure.py, image.py,
            contour.py, contour_demo.py; new _cm.py, examples/image_masked.py.
            1) Separated the color table data from cm.py out into

lib/matplotlib/backends/tkagg.py

@@ -3,6 +3,7 @@
 
 def blit(photoimage, aggimage, bbox=None, colormode=1):
     tk = photoimage.tk
+
     try:
         tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox))
     except Tk.TclError, v:

src/_tkagg.cpp

@@ -92,7 +92,6 @@ PyAggImagePhoto(ClientData clientdata, Tcl_Interp* interp,
 
       destx = (int)l;
       desty = srcheight-(int)t;
-      //desty = (int)b;
       destwidth = (int)(r-l);
       destheight = (int)(t-b);
       deststride = 4*destwidth;
@@ -107,7 +106,7 @@ PyAggImagePhoto(ClientData clientdata, Tcl_Interp* interp,
       pixfmt destpf(destrbuf);
       renderer_base destrb(destpf);
 
-      agg::rect_base<int> region(destx, desty, (int)r, (int)t); 
+      agg::rect_base<int> region(destx, desty, (int)r, srcheight-(int)b); 
       destrb.copy_from(*aggRenderer->renderingBuffer, &region, 
 		       -destx, -desty);
     } else {