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/* cairo - a vector graphics library with display and print output

 *

 * Copyright © 2009 Intel 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., 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 University of Southern

 * California.

 *

 * Contributor(s):

 *	Chris Wilson 

 */

#ifndef CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H

#define CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H

#include "cairo-types-private.h"

#include "cairo-error-private.h"

#include "cairo-pattern-private.h"

CAIRO_BEGIN_DECLS

/* Rectangles that take part in a composite operation.

 *

 * The source and mask track the extents of the respective patterns in device

 * space. The unbounded rectangle is essentially the clip rectangle. And the

 * intersection of all is the bounded rectangle, which is the minimum extents

 * the operation may require. Whether or not the operation is actually bounded

 * is tracked in the is_bounded boolean.

 *

 */

struct _cairo_composite_rectangles {

    cairo_surface_t *surface;

    cairo_operator_t op;

    cairo_rectangle_int_t source;

    cairo_rectangle_int_t mask;

    cairo_rectangle_int_t destination;

    cairo_rectangle_int_t bounded; /* source? IN mask? IN unbounded */

    cairo_rectangle_int_t unbounded; /* destination IN clip */

    uint32_t is_bounded;

    cairo_rectangle_int_t source_sample_area;

    cairo_rectangle_int_t mask_sample_area;

    cairo_pattern_union_t source_pattern;

    cairo_pattern_union_t mask_pattern;

    const cairo_pattern_t *original_source_pattern;

    const cairo_pattern_t *original_mask_pattern;

    cairo_clip_t *clip; /* clip will be reduced to the minimal container */

};

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_paint (cairo_composite_rectangles_t *extents,

					    cairo_surface_t *surface,

					    cairo_operator_t	 op,

					    const cairo_pattern_t	*source,

					    const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_mask (cairo_composite_rectangles_t *extents,

					   cairo_surface_t *surface,

					   cairo_operator_t	 op,

					   const cairo_pattern_t	*source,

					   const cairo_pattern_t	*mask,

					   const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_stroke (cairo_composite_rectangles_t *extents,

					     cairo_surface_t *surface,

					     cairo_operator_t	 op,

					     const cairo_pattern_t	*source,

					     const cairo_path_fixed_t	*path,

					     const cairo_stroke_style_t	*style,

					     const cairo_matrix_t	*ctm,

					     const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_fill (cairo_composite_rectangles_t *extents,

					   cairo_surface_t *surface,

					   cairo_operator_t	 op,

					   const cairo_pattern_t	*source,

					   const cairo_path_fixed_t	*path,

					   const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_boxes (cairo_composite_rectangles_t *extents,

					      cairo_surface_t		*surface,

					      cairo_operator_t		 op,

					      const cairo_pattern_t	*source,

					      const cairo_boxes_t	*boxes,

					      const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_polygon (cairo_composite_rectangles_t *extents,

					      cairo_surface_t		*surface,

					      cairo_operator_t		 op,

					      const cairo_pattern_t	*source,

					      const cairo_polygon_t	*polygon,

					      const cairo_clip_t		*clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_init_for_glyphs (cairo_composite_rectangles_t *extents,

					     cairo_surface_t *surface,

					     cairo_operator_t		 op,

					     const cairo_pattern_t	*source,

					     cairo_scaled_font_t	*scaled_font,

					     cairo_glyph_t		*glyphs,

					     int			 num_glyphs,

					     const cairo_clip_t		*clip,

					     cairo_bool_t		*overlap);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents,

						      const cairo_box_t *box);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents,

						    const cairo_box_t *box);

cairo_private cairo_bool_t

_cairo_composite_rectangles_can_reduce_clip (cairo_composite_rectangles_t *composite,

					     cairo_clip_t *clip);

cairo_private cairo_int_status_t

_cairo_composite_rectangles_add_to_damage (cairo_composite_rectangles_t *composite,

					   cairo_boxes_t *damage);

cairo_private void

_cairo_composite_rectangles_fini (cairo_composite_rectangles_t *extents);

CAIRO_END_DECLS

#endif /* CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H */