[fixpt] Create cairo_region wrapper around pixman_region16_t

Insulate region-using code from implementation details;
at some point we'll want to switch to using 32-bit regions.

1 files changed, 105 insertions, 0 deletions

diff --git a/src/cairo-region-private.h b/src/cairo-region-private.h
new file mode 100644
index 00000000..a3ee7596
--- /dev/null
+++ b/src/cairo-region-private.h
@@ -0,0 +1,105 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mozilla Corporation
+ *
+ * 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 Mozilla Corporation
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#ifndef CAIRO_REGION_PRIVATE_H
+#define CAIRO_REGION_PRIVATE_H
+
+#include <pixman.h>
+
+/* cairo_region_t is defined in cairoint.h */
+
+struct _cairo_region {
+    pixman_region16_t rgn;
+};
+
+cairo_private void
+_cairo_region_init (cairo_region_t *region);
+
+cairo_private void
+_cairo_region_init_rect (cairo_region_t *region,
+			 cairo_rectangle_int_t *rect);
+
+cairo_private cairo_int_status_t
+_cairo_region_init_boxes (cairo_region_t *region,
+			  cairo_box_int_t *boxes,
+			  int count);
+
+cairo_private void
+_cairo_region_fini (cairo_region_t *region);
+
+cairo_private cairo_int_status_t
+_cairo_region_copy (cairo_region_t *dst,
+		    cairo_region_t *src);
+
+cairo_private int
+_cairo_region_num_boxes (cairo_region_t *region);
+
+cairo_private cairo_int_status_t
+_cairo_region_get_boxes (cairo_region_t *region,
+			 int *num_boxes,
+			 cairo_box_int_t **boxes);
+
+cairo_private void
+_cairo_region_boxes_fini (cairo_region_t *region,
+			  cairo_box_int_t *boxes);
+
+cairo_private void
+_cairo_region_get_extents (cairo_region_t *region,
+			   cairo_rectangle_int_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_region_subtract (cairo_region_t *dst,
+			cairo_region_t *a,
+			cairo_region_t *b);
+
+cairo_private cairo_int_status_t
+_cairo_region_intersect (cairo_region_t *dst,
+			 cairo_region_t *a,
+			 cairo_region_t *b);
+
+cairo_private cairo_int_status_t
+_cairo_region_union_rect (cairo_region_t *dst,
+			  cairo_region_t *src,
+			  cairo_rectangle_int_t *rect);
+
+cairo_private cairo_bool_t
+_cairo_region_not_empty (cairo_region_t *region);
+
+cairo_private void
+_cairo_region_translate (cairo_region_t *region,
+			 int x, int y);
+
+#endif /* CAIRO_REGION_PRIVATE_H */