/* ply-pixel-buffer.h - pixel buffer abstraction
 *
 * Copyright (C) 2007, 2009 Red Hat, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * Written By: Ray Strode <rstrode@redhat.com>
 */
#ifndef PLY_PIXEL_BUFFER_H
#define PLY_PIXEL_BUFFER_H

#include <stdbool.h>
#include <stdint.h>

#include "ply-rectangle.h"
#include "ply-region.h"
#include "ply-utils.h"

typedef struct _ply_pixel_buffer ply_pixel_buffer_t;

#define PLY_PIXEL_BUFFER_COLOR_TO_PIXEL_VALUE(r,g,b,a)                        \
    (((uint8_t) (CLAMP (a * 255.0, 0.0, 255.0)) << 24)                        \
      | ((uint8_t) (CLAMP (r * 255.0, 0.0, 255.0)) << 16)                     \
      | ((uint8_t) (CLAMP (g * 255.0, 0.0, 255.0)) << 8)                      \
      | ((uint8_t) (CLAMP (b * 255.0, 0.0, 255.0))))

#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
ply_pixel_buffer_t *ply_pixel_buffer_new (unsigned long width,
                                          unsigned long height);
void ply_pixel_buffer_free (ply_pixel_buffer_t *buffer);
void ply_pixel_buffer_get_size (ply_pixel_buffer_t *buffer,
                                ply_rectangle_t    *size);
ply_region_t *ply_pixel_buffer_get_updated_areas (ply_pixel_buffer_t *buffer);

void ply_pixel_buffer_fill_with_color (ply_pixel_buffer_t *buffer,
                                       ply_rectangle_t    *fill_area,
                                       double              red,
                                       double              green,
                                       double              blue,
                                       double              alpha);
void ply_pixel_buffer_fill_with_hex_color (ply_pixel_buffer_t *buffer,
                                           ply_rectangle_t    *fill_area,
                                           uint32_t            hex_color);

void ply_pixel_buffer_fill_with_hex_color_at_opacity (ply_pixel_buffer_t *buffer,
                                                      ply_rectangle_t    *fill_area,
                                                      uint32_t            hex_color,
                                                      double              opacity);

void ply_pixel_buffer_fill_with_gradient (ply_pixel_buffer_t *buffer,
                                          ply_rectangle_t    *fill_area,
                                          uint32_t            start,
                                          uint32_t            end);

void ply_pixel_buffer_fill_with_argb32_data (ply_pixel_buffer_t *buffer,
                                             ply_rectangle_t    *fill_area,
                                             unsigned long       x,
                                             unsigned long       y,
                                             uint32_t           *data);
void ply_pixel_buffer_fill_with_argb32_data_at_opacity (ply_pixel_buffer_t *buffer,
                                                        ply_rectangle_t    *fill_area,
                                                        unsigned long       x,
                                                        unsigned long       y,
                                                        uint32_t           *data,
                                                        double              opacity);

void ply_pixel_buffer_fill_with_argb32_data_with_clip (ply_pixel_buffer_t *buffer,
                                                       ply_rectangle_t    *fill_area,
                                                       ply_rectangle_t    *clip_area,
                                                       unsigned long       x,
                                                       unsigned long       y,
                                                       uint32_t           *data);
void ply_pixel_buffer_fill_with_argb32_data_at_opacity_with_clip (ply_pixel_buffer_t *buffer,
                                                                  ply_rectangle_t    *fill_area,
                                                                  ply_rectangle_t    *clip_area,
                                                                  unsigned long       x,
                                                                  unsigned long       y,
                                                                  uint32_t           *data,
                                                                  double              opacity);

void ply_pixel_buffer_push_clip_area (ply_pixel_buffer_t *buffer,
                                      ply_rectangle_t    *clip_area);
void ply_pixel_buffer_pop_clip_area (ply_pixel_buffer_t *buffer);

uint32_t *ply_pixel_buffer_get_argb32_data (ply_pixel_buffer_t *buffer);

ply_pixel_buffer_t *ply_pixel_buffer_resize (ply_pixel_buffer_t *old_buffer,
                                             long                width,
                                             long                height);

ply_pixel_buffer_t *ply_pixel_buffer_rotate (ply_pixel_buffer_t *old_buffer,
                                             long                center_x,
                                             long                center_y,
                                             double              theta_offset);

#endif

#endif /* PLY_PIXEL_BUFFER_H */
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */