Add surface-offset internal API.

This is a simplified version of the wrapping surface where the target
surface is just a subsurface onto which we wish to draw the current
operation. In particular this is useful for the subsurface API as well
as fallbacks.

1 files changed, 95 insertions, 0 deletions

diff --git a/src/cairo-surface-offset-private.h b/src/cairo-surface-offset-private.h
new file mode 100644
index 000000000..3968dbf35
--- /dev/null
+++ b/src/cairo-surface-offset-private.h
@@ -0,0 +1,95 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * 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
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.u>
+ */
+
+#ifndef CAIRO_SURFACE_OFFSET_PRIVATE_H
+#define CAIRO_SURFACE_OFFSET_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private cairo_status_t
+_cairo_surface_offset_paint (cairo_surface_t *target,
+			     int x, int y,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_mask (cairo_surface_t *target,
+			    int x, int y,
+			    cairo_operator_t	 op,
+			    const cairo_pattern_t *source,
+			    const cairo_pattern_t *mask,
+			    cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_stroke (cairo_surface_t *surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      cairo_path_fixed_t	*path,
+			      const cairo_stroke_style_t	*stroke_style,
+			      const cairo_matrix_t		*ctm,
+			      const cairo_matrix_t		*ctm_inverse,
+			      double			 tolerance,
+			      cairo_antialias_t	 antialias,
+			      cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_fill (cairo_surface_t	*surface,
+			    int x, int y,
+			    cairo_operator_t	 op,
+			    const cairo_pattern_t*source,
+			    cairo_path_fixed_t	*path,
+			    cairo_fill_rule_t	 fill_rule,
+			    double		 tolerance,
+			    cairo_antialias_t	 antialias,
+			    cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_glyphs (cairo_surface_t		*surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      cairo_scaled_font_t	*scaled_font,
+			      cairo_glyph_t		*glyphs,
+			      int			 num_glyphs,
+			      cairo_clip_t		*clip);
+
+#endif /* CAIRO_SURFACE_OFFSET_PRIVATE_H */