Fix one-pixel space between images and axes border.

mdboom · mdboom · commit d2627781d84e · 2008-06-05T17:06:16.000Z
svn path=/trunk/matplotlib/; revision=5402
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,3 +1,6 @@
+2008-06-05 Fix image drawing so there is no extra space to the right
+           or bottom - MGD
+
 2006-06-04 Added a figure title command subtitle as a Figure method
            and pyplot command -- see examples/figure_title.py - JDH
 
diff --git a/lib/matplotlib/image.py b/lib/matplotlib/image.py
@@ -205,7 +205,9 @@ def make_image(self, magnification=1.0):
         tx = (xmin-self.axes.viewLim.x0)/dxintv * numcols
         ty = (ymin-self.axes.viewLim.y0)/dyintv * numrows
 
-        l, b, widthDisplay, heightDisplay = self.axes.bbox.bounds
+        l, b, r, t = self.axes.bbox.extents
+        widthDisplay = (round(r) + 0.5) - (round(l) - 0.5)
+        heightDisplay = (round(t) + 0.5) - (round(b) - 0.5)
         widthDisplay *= magnification
         heightDisplay *= magnification
         im.apply_translation(tx, ty)
@@ -226,7 +228,7 @@ def draw(self, renderer, *args, **kwargs):
             warnings.warn("Images are not supported on non-linear axes.")
         im = self.make_image(renderer.get_image_magnification())
         l, b, widthDisplay, heightDisplay = self.axes.bbox.bounds
-        renderer.draw_image(l, b, im, self.axes.bbox.frozen(),
+        renderer.draw_image(round(l), round(b), im, self.axes.bbox.frozen(),
                             *self.get_transformed_clip_path_and_affine())
 
     def contains(self, mouseevent):
@@ -378,7 +380,9 @@ def make_image(self, magnification=1.0):
             raise RuntimeError('You must first set the image array')
 
         x0, y0, v_width, v_height = self.axes.viewLim.bounds
-        l, b, width, height = self.axes.bbox.bounds
+        l, b, r, t = self.axes.bbox.extents
+        width = (round(r) + 0.5) - (round(l) - 0.5)
+        height = (round(t) + 0.5) - (round(b) - 0.5)
         width *= magnification
         height *= magnification
         im = _image.pcolor(self._Ax, self._Ay, self._A,
@@ -487,8 +491,11 @@ def make_image(self, magnification=1.0):
         fc = self.axes.get_frame().get_facecolor()
         bg = mcolors.colorConverter.to_rgba(fc, 0)
         bg = (np.array(bg)*255).astype(np.uint8)
-        width = self.axes.bbox.width * magnification
-        height = self.axes.bbox.height * magnification
+        l, b, r, t = self.axes.bbox.extents
+        width = (round(r) + 0.5) - (round(l) - 0.5)
+        height = (round(t) + 0.5) - (round(b) - 0.5)
+        width = width * magnification
+        height = height * magnification
         if self.check_update('array'):
             A = self.to_rgba(self._A, alpha=self._alpha, bytes=True)
             self._rgbacache = A
@@ -508,8 +515,8 @@ def make_image(self, magnification=1.0):
     def draw(self, renderer, *args, **kwargs):
         if not self.get_visible(): return
         im = self.make_image(renderer.get_image_magnification())
-        renderer.draw_image(self.axes.bbox.xmin,
-                            self.axes.bbox.ymin,
+        renderer.draw_image(round(self.axes.bbox.xmin),
+                            round(self.axes.bbox.ymin),
                             im,
                             self.axes.bbox.frozen(),
                             *self.get_transformed_clip_path_and_affine())
@@ -638,7 +645,7 @@ def make_image(self, magnification=1.0):
     def draw(self, renderer, *args, **kwargs):
         if not self.get_visible(): return
         im = self.make_image()
-        renderer.draw_image(self.ox, self.oy, im, self.figure.bbox,
+        renderer.draw_image(round(self.ox), round(self.oy), im, self.figure.bbox,
                             *self.get_transformed_clip_path_and_affine())
 
     def write_png(self, fname):
