add cairo

1 files changed, 206 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/src/cairo-path-fixed-private.h b/libs/cairo-1.16.0/src/cairo-path-fixed-private.h
new file mode 100644
index 0000000..cf7cd08
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-fixed-private.h
@@ -0,0 +1,206 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * 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
+ * (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., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, 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 Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PATH_FIXED_PRIVATE_H
+#define CAIRO_PATH_FIXED_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-list-private.h"
+
+#define WATCH_PATH 0
+#if WATCH_PATH
+#include <stdio.h>
+#endif
+
+enum cairo_path_op {
+    CAIRO_PATH_OP_MOVE_TO = 0,
+    CAIRO_PATH_OP_LINE_TO = 1,
+    CAIRO_PATH_OP_CURVE_TO = 2,
+    CAIRO_PATH_OP_CLOSE_PATH = 3
+};
+
+/* we want to make sure a single byte is used for the enum */
+typedef char cairo_path_op_t;
+
+/* make _cairo_path_fixed fit into ~512 bytes -- about 50 items */
+#define CAIRO_PATH_BUF_SIZE ((512 - sizeof (cairo_path_buf_t)) \
+			   / (2 * sizeof (cairo_point_t) + sizeof (cairo_path_op_t)))
+
+#define cairo_path_head(path__) (&(path__)->buf.base)
+#define cairo_path_tail(path__) cairo_path_buf_prev (cairo_path_head (path__))
+
+#define cairo_path_buf_next(pos__) \
+    cairo_list_entry ((pos__)->link.next, cairo_path_buf_t, link)
+#define cairo_path_buf_prev(pos__) \
+    cairo_list_entry ((pos__)->link.prev, cairo_path_buf_t, link)
+
+#define cairo_path_foreach_buf_start(pos__, path__) \
+    pos__ = cairo_path_head (path__); do
+#define cairo_path_foreach_buf_end(pos__, path__) \
+    while ((pos__ = cairo_path_buf_next (pos__)) !=  cairo_path_head (path__))
+
+
+typedef struct _cairo_path_buf {
+    cairo_list_t link;
+    unsigned int num_ops;
+    unsigned int size_ops;
+    unsigned int num_points;
+    unsigned int size_points;
+
+    cairo_path_op_t *op;
+    cairo_point_t *points;
+} cairo_path_buf_t;
+
+typedef struct _cairo_path_buf_fixed {
+    cairo_path_buf_t base;
+
+    cairo_path_op_t op[CAIRO_PATH_BUF_SIZE];
+    cairo_point_t points[2 * CAIRO_PATH_BUF_SIZE];
+} cairo_path_buf_fixed_t;
+
+/*
+  NOTES:
+  has_curve_to => !stroke_is_rectilinear
+  fill_is_rectilinear => stroke_is_rectilinear
+  fill_is_empty => fill_is_rectilinear
+  fill_maybe_region => fill_is_rectilinear
+*/
+struct _cairo_path_fixed {
+    cairo_point_t last_move_point;
+    cairo_point_t current_point;
+    unsigned int has_current_point	: 1;
+    unsigned int needs_move_to		: 1;
+    unsigned int has_extents		: 1;
+    unsigned int has_curve_to		: 1;
+    unsigned int stroke_is_rectilinear	: 1;
+    unsigned int fill_is_rectilinear	: 1;
+    unsigned int fill_maybe_region	: 1;
+    unsigned int fill_is_empty		: 1;
+
+    cairo_box_t extents;
+
+    cairo_path_buf_fixed_t  buf;
+};
+
+cairo_private void
+_cairo_path_fixed_translate (cairo_path_fixed_t *path,
+			     cairo_fixed_t offx,
+			     cairo_fixed_t offy);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_append (cairo_path_fixed_t		    *path,
+			  const cairo_path_fixed_t	    *other,
+			  cairo_fixed_t			     tx,
+			  cairo_fixed_t			     ty);
+
+cairo_private unsigned long
+_cairo_path_fixed_hash (const cairo_path_fixed_t *path);
+
+cairo_private unsigned long
+_cairo_path_fixed_size (const cairo_path_fixed_t *path);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_equal (const cairo_path_fixed_t *a,
+			 const cairo_path_fixed_t *b);
+
+typedef struct _cairo_path_fixed_iter {
+    const cairo_path_buf_t *first;
+    const cairo_path_buf_t *buf;
+    unsigned int n_op;
+    unsigned int n_point;
+} cairo_path_fixed_iter_t;
+
+cairo_private void
+_cairo_path_fixed_iter_init (cairo_path_fixed_iter_t *iter,
+			     const cairo_path_fixed_t *path);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_iter_is_fill_box (cairo_path_fixed_iter_t *_iter,
+				    cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_iter_at_end (const cairo_path_fixed_iter_t *iter);
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_is_empty (const cairo_path_fixed_t *path)
+{
+    return path->fill_is_empty;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_is_rectilinear (const cairo_path_fixed_t *path)
+{
+    if (! path->fill_is_rectilinear)
+	return 0;
+
+    if (! path->has_current_point || path->needs_move_to)
+	return 1;
+
+    /* check whether the implicit close preserves the rectilinear property */
+    return path->current_point.x == path->last_move_point.x ||
+	   path->current_point.y == path->last_move_point.y;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_stroke_is_rectilinear (const cairo_path_fixed_t *path)
+{
+    return path->stroke_is_rectilinear;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_maybe_region (const cairo_path_fixed_t *path)
+{
+    if (! path->fill_maybe_region)
+	return 0;
+
+    if (! path->has_current_point || path->needs_move_to)
+	return 1;
+
+    /* check whether the implicit close preserves the rectilinear property
+     * (the integer point property is automatically preserved)
+     */
+    return path->current_point.x == path->last_move_point.x ||
+	   path->current_point.y == path->last_move_point.y;
+}
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_stroke_box (const cairo_path_fixed_t *path,
+				 cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_simple_quad (const cairo_path_fixed_t *path);
+
+#endif /* CAIRO_PATH_FIXED_PRIVATE_H */