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+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Andrea Canciani
+ *
+ * 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.
+ *
+ * Contributor(s):
+ * Andrea Canciani <ranma42@gmail.com>
+ */
+
+#ifndef CAIRO_BOX_H
+#define CAIRO_BOX_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-fixed-private.h"
+
+static inline void
+_cairo_box_set (cairo_box_t *box,
+ const cairo_point_t *p1,
+ const cairo_point_t *p2)
+{
+ box->p1 = *p1;
+ box->p2 = *p2;
+}
+
+static inline void
+_cairo_box_from_integers (cairo_box_t *box, int x, int y, int w, int h)
+{
+ box->p1.x = _cairo_fixed_from_int (x);
+ box->p1.y = _cairo_fixed_from_int (y);
+ box->p2.x = _cairo_fixed_from_int (x + w);
+ box->p2.y = _cairo_fixed_from_int (y + h);
+}
+
+/* assumes box->p1 is top-left, p2 bottom-right */
+static inline void
+_cairo_box_add_point (cairo_box_t *box,
+ const cairo_point_t *point)
+{
+ if (point->x < box->p1.x)
+ box->p1.x = point->x;
+ else if (point->x > box->p2.x)
+ box->p2.x = point->x;
+
+ if (point->y < box->p1.y)
+ box->p1.y = point->y;
+ else if (point->y > box->p2.y)
+ box->p2.y = point->y;
+}
+
+static inline void
+_cairo_box_add_box (cairo_box_t *box,
+ const cairo_box_t *add)
+{
+ if (add->p1.x < box->p1.x)
+ box->p1.x = add->p1.x;
+ if (add->p2.x > box->p2.x)
+ box->p2.x = add->p2.x;
+
+ if (add->p1.y < box->p1.y)
+ box->p1.y = add->p1.y;
+ if (add->p2.y > box->p2.y)
+ box->p2.y = add->p2.y;
+}
+
+/* assumes box->p1 is top-left, p2 bottom-right */
+static inline cairo_bool_t
+_cairo_box_contains_point (const cairo_box_t *box,
+ const cairo_point_t *point)
+{
+ return box->p1.x <= point->x && point->x <= box->p2.x &&
+ box->p1.y <= point->y && point->y <= box->p2.y;
+}
+
+static inline cairo_bool_t
+_cairo_box_is_pixel_aligned (const cairo_box_t *box)
+{
+#if CAIRO_FIXED_FRAC_BITS <= 8 && 0
+ return ((box->p1.x & CAIRO_FIXED_FRAC_MASK) << 24 |
+ (box->p1.y & CAIRO_FIXED_FRAC_MASK) << 16 |
+ (box->p2.x & CAIRO_FIXED_FRAC_MASK) << 8 |
+ (box->p2.y & CAIRO_FIXED_FRAC_MASK) << 0) == 0;
+#else /* GCC on i7 prefers this variant (bizarrely according to the profiler) */
+ cairo_fixed_t f;
+
+ f = 0;
+ f |= box->p1.x & CAIRO_FIXED_FRAC_MASK;
+ f |= box->p1.y & CAIRO_FIXED_FRAC_MASK;
+ f |= box->p2.x & CAIRO_FIXED_FRAC_MASK;
+ f |= box->p2.y & CAIRO_FIXED_FRAC_MASK;
+
+ return f == 0;
+#endif
+}
+
+#endif /* CAIRO_BOX_H */