[gtk+] Fix gdk_cairo_region_create_from_surface on big endian

[Matthias Clasen <matthiasc src gnome org>]

commit ab34c7989620db3890efdfb6849c64d5c70c1b76
Author: Michel DÃnzer <michel daenzer net>
Date:   Sat Nov 19 12:23:27 2011 -0500

    Fix gdk_cairo_region_create_from_surface on big endian
    
    gdk_cairo_region_create_from_surface doesn't work correctly on PPC.
    This is most prominently seen with the GTK window resize grip, the
    shape of which is mirrored every eight pixels horizontally.
    
    At the same time, use an A1 surface for the resize grip shape to
    eliminates an A8->A1 surface conversion.

 gdk/gdkcairo.c  |    4 ++++
 gtk/gtkwindow.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkcairo.c b/gdk/gdkcairo.c
index 2ae8b09..ea58c42 100644
--- a/gdk/gdkcairo.c
+++ b/gdk/gdkcairo.c
@@ -427,7 +427,11 @@ gdk_cairo_region_create_from_surface (cairo_surface_t *surface)
           gint x0 = x;
           while (x < extents.width)
             {
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
               if (((data[x / 8] >> (x%8)) & 1) == 0)
+#else
+              if (((data[x / 8] >> (7-(x%8))) & 1) == 0)
+#endif
                 /* This pixel is "transparent"*/
                 break;
               x++;
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 657f9f8..50370a5 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -5298,7 +5298,7 @@ set_grip_shape (GtkWindow *window)
 
   width = gdk_window_get_width (priv->grip_window);
   height = gdk_window_get_height (priv->grip_window);
-  surface = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
+  surface = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
 
   cr = cairo_create (surface);
   cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.0);