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

 *

 * Copyright © 2011 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.og/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.

 *

 * Contributor(s):

 *      Robert Bragg 

 */

#ifndef CAIRO_COGL_PRIVATE_H

#define CAIRO_COGL_PRIVATE_H

#include "cairo-device-private.h"

#include "cairo-cache-private.h"

#include "cairo-backend-private.h"

#include "cairo-default-context-private.h"

#include "cairo-surface-private.h"

#include 

typedef enum _cairo_cogl_template_type {

    CAIRO_COGL_TEMPLATE_TYPE_SOLID,

    CAIRO_COGL_TEMPLATE_TYPE_TEXTURE,

    CAIRO_COGL_TEMPLATE_TYPE_MASK_SOLID,

    CAIRO_COGL_TEMPLATE_TYPE_MASK_TEXTURE,

    CAIRO_COGL_TEMPLATE_TYPE_COUNT

} cairo_cogl_template_type;

typedef struct _cairo_cogl_device {

    cairo_device_t base;

    cairo_bool_t backend_vtable_initialized;

    cairo_backend_t backend;

    /* We save a copy of all the original backend methods that we override so

     * we can chain up...

     */

    cairo_backend_t backend_parent;

    CoglContext *cogl_context;

    CoglTexture *dummy_texture;

    /* This is a sparsely filled set of templates because we don't support

     * the full range of operators that cairo has. All entries corresponding

     * to unsupported operators are NULL.

     *

     * The CAIRO_OPERATOR_ADD is the operator enum with the highest value that

     * we support so we at least cap the size of the array by that.

     *

     * For each operator we have a template for when we have a solid source

     * and another for each texture format that could be used as a source.

     */

    CoglPipeline *template_pipelines[CAIRO_OPERATOR_ADD + 1][CAIRO_COGL_TEMPLATE_TYPE_COUNT];

    CoglMatrix identity;

    /* Caches 1d linear gradient textures */

    cairo_cache_t linear_cache;

    cairo_cache_t path_fill_staging_cache;

    cairo_cache_t path_fill_prim_cache;

    cairo_cache_t path_stroke_staging_cache;

    cairo_cache_t path_stroke_prim_cache;

} cairo_cogl_device_t;

typedef struct _cairo_cogl_clip_primitives {

    cairo_t *clip;

    CoglPrimitive **primitives;

} cairo_cogl_clip_primitives_t;

typedef struct _cairo_cogl_surface {

    cairo_surface_t base;

    CoglPixelFormat cogl_format;

    cairo_bool_t ignore_alpha;

    /* We currently have 3 basic kinds of Cogl surfaces:

     * 1) A light surface simply wrapping a CoglTexture

     * 2) A CoglOffscreen framebuffer that implicitly also wraps a CoglTexture

     * 3) A CoglOnscreen framebuffer which could potentially be mapped to

     *    a CoglTexture (e.g. via tfp on X11) but we don't currently do

     *    that.

     */

    CoglTexture *texture;

    CoglFramebuffer *framebuffer;

    int width;

    int height;

    GQueue *journal;

    CoglAttributeBuffer *buffer_stack;

    size_t buffer_stack_size;

    size_t buffer_stack_offset;

    guint8 *buffer_stack_pointer;

    cairo_clip_t *last_clip;

    /* A small fifo of recently used cairo_clip_ts paired with CoglPrimitives

     * that can be used to mask the stencil buffer. */

    GList *clips_fifo;

    int n_clip_updates_per_frame;

    /* Since the surface backend drawing operator functions don't get

     * passed the current cairo_t context we don't have a good way

     * to get our user-coordinates path into our surface_fill function.

     *

     * For now we use our _cairo_cogl_context_fill() wrapper to set this

     * side band data on the surface...

     */

    cairo_path_fixed_t *user_path;

    cairo_matrix_t *ctm;

    cairo_matrix_t *ctm_inverse;

    cairo_bool_t path_is_rectangle;

    double path_rectangle_x;

    double path_rectangle_y;

    double path_rectangle_width;

    double path_rectangle_height;

} cairo_cogl_surface_t;

cairo_status_t

_cairo_cogl_path_fixed_rectangle (cairo_path_fixed_t *path,

				  cairo_fixed_t x,

				  cairo_fixed_t y,

				  cairo_fixed_t width,

				  cairo_fixed_t height);

cairo_int_status_t

_cairo_cogl_surface_fill_rectangle (void		     *abstract_surface,

				    cairo_operator_t	      op,

				    const cairo_pattern_t    *source,

				    double		      x,

				    double		      y,

				    double		      width,

				    double		      height,

				    cairo_matrix_t	     *ctm,

				    const cairo_clip_t	     *clip);

#endif /* CAIRO_COGL_PRIVATE_H */