cmoad · cmoad · commit 1417404c5a16 · 2006-07-18T16:32:52.000Z
svn path=/trunk/matplotlib/; revision=2577
diff --git a/examples/animation_blit_qt.py b/examples/animation_blit_qt.py
@@ -29,9 +29,12 @@ def __init__(self):
         self.x = nx.arange(0,2*nx.pi,0.01)
         self.line, = p.plot(self.x, nx.sin(self.x), animated=True, lw=2)
         
-        self.background = self.canvas.copy_from_bbox(self.ax.bbox)
+        self.background = None
     
     def timerEvent(self, evt):
+        if self.background is None:
+            self.background = self.canvas.copy_from_bbox(self.ax.bbox)
+        
         # restore the clean slate background
         self.canvas.restore_region(self.background)
         # update the data
@@ -48,6 +51,9 @@ def timerEvent(self, evt):
 
         else:
             self.cnt += 1
+            
+p.subplots_adjust(left=0.3, bottom=0.3) # check for flipy bugs
+p.grid()
 
 app = BlitQT()
 # for profiling
diff --git a/examples/animation_blit_wx.py b/examples/animation_blit_wx.py
@@ -45,7 +45,7 @@ def update_line(*args):
     # just redraw the axes rectangle
 
     t = time.time()
-    canvas.blit(ax.bbox) 
+    canvas.blit(ax.bbox)
     blit_time += time.time() - t
 
     if update_line.cnt==200:
diff --git a/lib/matplotlib/backends/backend_qtagg.py b/lib/matplotlib/backends/backend_qtagg.py
@@ -75,7 +75,7 @@ def paintEvent( self, e ):
         p = qt.QPainter( self )
         
         # only replot data when needed
-        if type(self.replot) is bool:
+        if type(self.replot) is bool: # might be a bbox for blitting
             if self.replot:
                 FigureCanvasAgg.draw( self )
                 stringBuffer = str( self.buffer_rgba(0,0) )
@@ -103,13 +103,16 @@ def paintEvent( self, e ):
                 p.drawRect( self.rect[0], self.rect[1], self.rect[2], self.rect[3] )
                 
         # we are blitting here
-        else:
+        else: # TODO: Fix memory leak
             bbox = self.replot
-            self.restore_region(self.copy_from_bbox(bbox))
-            p.drawPixmap(qt.QPoint(bbox.ll().x().get(),
-                                   bbox.ll().y().get()),
-                         self.pixmap)
-           
+            w, h = int(bbox.width()), int(bbox.height())
+            l, t = bbox.ll().x().get(), bbox.ur().y().get()
+            reg = self.copy_from_bbox(bbox)
+            stringBuffer = reg.to_string()
+            qImage = qt.QImage(stringBuffer, w, h, 32, None, 0, qt.QImage.IgnoreEndian)
+            self.pixmap.convertFromImage(qImage, qt.QPixmap.Color)
+            p.drawPixmap(qt.QPoint(l, self.renderer.height-t), self.pixmap)
+
         p.end()
         self.replot = False
         self.drawRect = False
