gecko/gfx/cairo/clone-similar-fallback.patch

Index: gfx/cairo/cairo/src/cairo-analysis-surface-private.h
===================================================================
RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-analysis-surface-private.h,v
retrieving revision 1.11
diff -u -8 -p -r1.11 cairo-analysis-surface-private.h
--- gfx/cairo/cairo/src/cairo-analysis-surface-private.h	2 Aug 2007 06:58:47 -0000	1.11
+++ gfx/cairo/cairo/src/cairo-analysis-surface-private.h	7 Aug 2007 22:50:37 -0000
@@ -1,9 +1,9 @@
-/* $Id: clone-similar-fallback.patch,v 1.1 2007/08/09 18:54:17 vladimir%pobox.com Exp $
+/* $Id: clone-similar-fallback.patch,v 1.1 2007/08/09 18:54:17 vladimir%pobox.com Exp $
  *
  * Copyright © 2005 Keith Packard
  *
  * This library is free software; you can redistribute it and/or
  * modify it either under the terms of the GNU Lesser General Public
  * License version 2.1 as published by the Free Software Foundation
  * (the "LGPL") or, at your option, under the terms of the Mozilla
  * Public License Version 1.1 (the "MPL"). If you do not alter this
Index: gfx/cairo/cairo/src/cairo-surface-fallback-private.h
===================================================================
RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-surface-fallback-private.h,v
retrieving revision 1.7
diff -u -8 -p -r1.7 cairo-surface-fallback-private.h
--- gfx/cairo/cairo/src/cairo-surface-fallback-private.h	2 Aug 2007 06:58:47 -0000	1.7
+++ gfx/cairo/cairo/src/cairo-surface-fallback-private.h	7 Aug 2007 22:50:37 -0000
@@ -1,8 +1,9 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
 /* cairo - a vector graphics library with display and print output
  *
  * Copyright © 2002 University of Southern California
  * Copyright © 2005 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it either under the terms of the GNU Lesser General Public
  * License version 2.1 as published by the Free Software Foundation
@@ -111,9 +112,18 @@ _cairo_surface_fallback_composite_trapez
 					      int			src_y,
 					      int			dst_x,
 					      int			dst_y,
 					      unsigned int		width,
 					      unsigned int		height,
 					      cairo_trapezoid_t	       *traps,
 					      int			num_traps);
 
+cairo_private cairo_status_t
+_cairo_surface_fallback_clone_similar (cairo_surface_t  *surface,
+				       cairo_surface_t  *src,
+				       int               src_x,
+				       int               src_y,
+				       int               width,
+				       int               height,
+				       cairo_surface_t **clone_out);
+
 #endif
Index: gfx/cairo/cairo/src/cairo-surface-fallback.c
===================================================================
RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-surface-fallback.c,v
retrieving revision 1.18
diff -u -8 -p -r1.18 cairo-surface-fallback.c
--- gfx/cairo/cairo/src/cairo-surface-fallback.c	2 Aug 2007 06:58:47 -0000	1.18
+++ gfx/cairo/cairo/src/cairo-surface-fallback.c	7 Aug 2007 22:50:37 -0000
@@ -1,8 +1,9 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
 /* cairo - a vector graphics library with display and print output
  *
  * Copyright © 2002 University of Southern California
  * Copyright © 2005 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it either under the terms of the GNU Lesser General Public
  * License version 2.1 as published by the Free Software Foundation
@@ -1247,8 +1248,48 @@ _cairo_surface_fallback_composite_trapez
     if (offset_traps)
 	free (offset_traps);
 
  DONE:
     _fallback_fini (&state);
 
     return status;
 }
+
+cairo_status_t
+_cairo_surface_fallback_clone_similar (cairo_surface_t	*surface,
+				       cairo_surface_t	*src,
+				       int		 src_x,
+				       int		 src_y,
+				       int		 width,
+				       int		 height,
+				       cairo_surface_t **clone_out)
+{
+    cairo_status_t status;
+    cairo_pattern_union_t src_pattern;
+    cairo_surface_t *new_surface = NULL;
+
+    new_surface = _cairo_surface_create_similar_scratch (surface,
+							 cairo_surface_get_content (src),
+							 width, height);
+    if (new_surface->status)
+	return new_surface->status;
+
+    _cairo_pattern_init_for_surface (&src_pattern.surface, src);
+
+    status = _cairo_surface_composite (CAIRO_OPERATOR_SOURCE,
+				       &src_pattern.base,
+				       NULL,
+				       new_surface,
+				       src_x, src_y,
+				       0, 0,
+				       0, 0,
+				       width, height);
+
+    _cairo_pattern_fini (&src_pattern.base);
+
+    if (status == CAIRO_STATUS_SUCCESS)
+	*clone_out = new_surface;
+    else if (new_surface)
+	cairo_surface_destroy (new_surface);
+
+    return status;
+}
Index: gfx/cairo/cairo/src/cairo-surface.c
===================================================================
RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-surface.c,v
retrieving revision 1.27
diff -u -8 -p -r1.27 cairo-surface.c
--- gfx/cairo/cairo/src/cairo-surface.c	2 Aug 2007 06:58:47 -0000	1.27
+++ gfx/cairo/cairo/src/cairo-surface.c	7 Aug 2007 22:50:37 -0000
@@ -1027,17 +1027,21 @@ _cairo_surface_clone_similar (cairo_surf
     cairo_status_t status;
     cairo_image_surface_t *image;
     void *image_extra;
 
     if (surface->finished)
 	return CAIRO_STATUS_SURFACE_FINISHED;
 
     if (surface->backend->clone_similar == NULL)
-	return CAIRO_INT_STATUS_UNSUPPORTED;
+	return (cairo_int_status_t)
+	    _cairo_surface_fallback_clone_similar (surface, src,
+						   src_x, src_y,
+						   width, height,
+						   clone_out);
 
     status = surface->backend->clone_similar (surface, src, src_x, src_y,
 					      width, height, clone_out);
     if (status == CAIRO_STATUS_SUCCESS && *clone_out != src)
         (*clone_out)->device_transform = src->device_transform;
 
     if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 	return status;