/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2003 University of Southern California
* Copyright © 2009,2010,2011 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.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):
* Carl D. Worth <cworth@cworth.org>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
/* This compositor is slightly pointless. Just exists for testing
* and as skeleton code.
*/
#include "cairoint.h"
#include "cairo-image-surface-private.h"
#include "cairo-compositor-private.h"
#include "cairo-region-private.h"
#error This file isn
't included in any Makefile
static cairo_int_status_t
acquire (
void *abstract_dst)
{
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
release (
void *abstract_dst)
{
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
set_clip_region (
void *_surface,
cairo_region_t *region)
{
cairo_image_surface_t *surface = _surface;
pixman_region32_t *rgn = region ? ®ion->rgn : NULL;
if (! pixman_image_set_clip_region32 (surface->pixman_image, rgn))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
static cairo_bool_t
has_snapshot (
void *_dst,
const cairo_pattern_t *pattern)
{
return FALSE;
}
static cairo_int_status_t
draw_image (
void *_dst,
cairo_image_surface_t *image,
int src_x,
int src_y,
int width,
int height,
int dst_x,
int dst_y)
{
cairo_image_surface_t *dst = (cairo_image_surface_t *)_dst;
pixman_image_composite32 (PIXMAN_OP_SRC,
image->pixman_image, NULL, dst->pixman_image,
src_x, src_y,
0, 0,
dst_x, dst_y,
width, height);
return CAIRO_STATUS_SUCCESS;
}
static inline uint32_t
color_to_uint32 (
const cairo_color_t *color)
{
return
((uint32_t)color->alpha_short >> 8 << 24) |
(color->red_short >> 8 << 16) |
(color->green_short & 0xff00) |
(color->blue_short >> 8);
}
static inline cairo_bool_t
color_to_pixel (
const cairo_color_t *color,
double opacity,
pixman_format_code_t format,
uint32_t *pixel)
{
cairo_color_t opacity_color;
uint32_t c;
if (!(format == PIXMAN_a8r8g8b8 ||
format == PIXMAN_x8r8g8b8 ||
format == PIXMAN_a8b8g8r8 ||
format == PIXMAN_x8b8g8r8 ||
format == PIXMAN_b8g8r8a8 ||
format == PIXMAN_b8g8r8x8 ||
format == PIXMAN_r5g6b5 ||
format == PIXMAN_b5g6r5 ||
format == PIXMAN_a8))
{
return FALSE;
}
if (opacity != 1.0) {
_cairo_color_init_rgba (&opacity_color,
color->red,
color->green,
color->blue,
color->alpha * opacity);
color = &opacity_color;
}
c = color_to_uint32 (color);
if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) {
c = ((c & 0xff000000) >> 0) |
((c & 0x00ff0000) >> 16) |
((c & 0x0000ff00) >> 0) |
((c & 0x000000ff) << 16);
}
if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA) {
c = ((c & 0xff000000) >> 24) |
((c & 0x00ff0000) >> 8) |
((c & 0x0000ff00) << 8) |
((c & 0x000000ff) << 24);
}
if (format == PIXMAN_a8) {
c = c >> 24;
}
else if (format == PIXMAN_r5g6b5 || format == PIXMAN_b5g6r5) {
c = ((((c) >> 3) & 0x001f) |
(((c) >> 5) & 0x07e0) |
(((c) >> 8) & 0xf800));
}
*pixel = c;
return TRUE;
}
static cairo_int_status_t
fill_rectangles (
void *_dst,
cairo_operator_t op,
const cairo_color_t *color,
cairo_rectangle_int_t *rects,
int num_rects)
{
cairo_image_surface_t *dst = _dst;
uint32_t pixel;
int i;
if (! color_to_pixel (color, 1.0, dst->pixman_format, &pixel))
return CAIRO_INT_STATUS_UNSUPPORTED;
for (i = 0; i < num_rects; i++) {
pixman_fill ((uint32_t *) dst->data, dst->stride /
sizeof (uint32_t),
PIXMAN_FORMAT_BPP (dst->pixman_format),
rects[i].x, rects[i].y,
rects[i].width, rects[i].height,
pixel);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
fill_boxes (
void *_dst,
cairo_operator_t op,
const cairo_color_t *color,
cairo_boxes_t *boxes)
{
cairo_image_surface_t *dst = _dst;
struct _cairo_boxes_chunk *chunk;
uint32_t pixel;
int i;
assert (boxes->is_pixel_aligned);
if (! color_to_pixel (color, 1.0, dst->pixman_format, &pixel))
return CAIRO_INT_STATUS_UNSUPPORTED;
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
pixman_fill ((uint32_t *) dst->data, dst->stride /
sizeof (uint32_t),
PIXMAN_FORMAT_BPP (dst->pixman_format),
x1, y1, x2 - x1, y2 - y1,
pixel);
}
}
return CAIRO_STATUS_SUCCESS;
}
static pixman_op_t
_pixman_operator (cairo_operator_t op)
{
switch ((
int) op) {
case CAIRO_OPERATOR_CLEAR:
return PIXMAN_OP_CLEAR;
case CAIRO_OPERATOR_SOURCE:
return PIXMAN_OP_SRC;
case CAIRO_OPERATOR_OVER:
return PIXMAN_OP_OVER;
case CAIRO_OPERATOR_IN:
return PIXMAN_OP_IN;
case CAIRO_OPERATOR_OUT:
return PIXMAN_OP_OUT;
case CAIRO_OPERATOR_ATOP:
return PIXMAN_OP_ATOP;
case CAIRO_OPERATOR_DEST:
return PIXMAN_OP_DST;
case CAIRO_OPERATOR_DEST_OVER:
return PIXMAN_OP_OVER_REVERSE;
case CAIRO_OPERATOR_DEST_IN:
return PIXMAN_OP_IN_REVERSE;
case CAIRO_OPERATOR_DEST_OUT:
return PIXMAN_OP_OUT_REVERSE;
case CAIRO_OPERATOR_DEST_ATOP:
return PIXMAN_OP_ATOP_REVERSE;
case CAIRO_OPERATOR_XOR:
return PIXMAN_OP_XOR;
case CAIRO_OPERATOR_ADD:
return PIXMAN_OP_ADD;
case CAIRO_OPERATOR_SATURATE:
return PIXMAN_OP_SATURATE;
case CAIRO_OPERATOR_MULTIPLY:
return PIXMAN_OP_MULTIPLY;
case CAIRO_OPERATOR_SCREEN:
return PIXMAN_OP_SCREEN;
case CAIRO_OPERATOR_OVERLAY:
return PIXMAN_OP_OVERLAY;
case CAIRO_OPERATOR_DARKEN:
return PIXMAN_OP_DARKEN;
case CAIRO_OPERATOR_LIGHTEN:
return PIXMAN_OP_LIGHTEN;
case CAIRO_OPERATOR_COLOR_DODGE:
return PIXMAN_OP_COLOR_DODGE;
case CAIRO_OPERATOR_COLOR_BURN:
return PIXMAN_OP_COLOR_BURN;
case CAIRO_OPERATOR_HARD_LIGHT:
return PIXMAN_OP_HARD_LIGHT;
case CAIRO_OPERATOR_SOFT_LIGHT:
return PIXMAN_OP_SOFT_LIGHT;
case CAIRO_OPERATOR_DIFFERENCE:
return PIXMAN_OP_DIFFERENCE;
case CAIRO_OPERATOR_EXCLUSION:
return PIXMAN_OP_EXCLUSION;
case CAIRO_OPERATOR_HSL_HUE:
return PIXMAN_OP_HSL_HUE;
case CAIRO_OPERATOR_HSL_SATURATION:
return PIXMAN_OP_HSL_SATURATION;
case CAIRO_OPERATOR_HSL_COLOR:
return PIXMAN_OP_HSL_COLOR;
case CAIRO_OPERATOR_HSL_LUMINOSITY:
return PIXMAN_OP_HSL_LUMINOSITY;
default:
ASSERT_NOT_REACHED;
return PIXMAN_OP_OVER;
}
}
static cairo_int_status_t
composite (
void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
cairo_surface_t *abstract_mask,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_image_surface_t *dst = _dst;
cairo_pixman_source_t *src = (cairo_pixman_source_t *)abstract_src;
cairo_pixman_source_t *mask = (cairo_pixman_source_t *)abstract_mask;
if (mask) {
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, mask->pixman_image, dst->pixman_image,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
}
else {
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, NULL, dst->pixman_image,
src_x, src_y,
0, 0,
dst_x, dst_y,
width, height);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_boxes (
void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
cairo_surface_t *abstract_mask,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
cairo_boxes_t *boxes)
{
cairo_image_surface_t *dst = _dst;
cairo_pixman_source_t *src = (cairo_pixman_source_t *)abstract_src;
cairo_pixman_source_t *mask = (cairo_pixman_source_t *)abstract_mask;
struct _cairo_boxes_chunk *chunk;
int i;
assert (boxes->is_pixel_aligned);
op = _pixman_operator (op);
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
if (mask) {
pixman_image_composite32 (op,
src->pixman_image, mask->pixman_image, dst->pixman_image,
x1 + src_x, y1 + src_y,
x1 + mask_x, y1 + mask_y,
x1 + dst_x, y1 + dst_y,
x2 - x1, y2 - y1);
}
else {
pixman_image_composite32 (op,
src->pixman_image, NULL, dst->pixman_image,
x1 + src_x, y1 + src_y,
0, 0,
x1 + dst_x, y1 + dst_y,
x2 - x1, y2 - y1);
}
}
}
return CAIRO_STATUS_SUCCESS;
}
const cairo_compositor_t *
_cairo_image_mask_compositor_get (
void)
{
static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
static cairo_mask_compositor_t compositor;
if (_cairo_atomic_init_once_enter(&once)) {
_cairo_mask_compositor_init (&compositor,
_cairo_image_traps_compositor_get ());
compositor.acquire = acquire;
compositor.release = release;
compositor.set_clip_region = set_clip_region;
compositor.pattern_to_surface = _cairo_pixman_source_create_for_pattern;
compositor.has_snapshot = has_snapshot;
compositor.draw_image = draw_image;
compositor.fill_rectangles = fill_rectangles;
compositor.fill_boxes = fill_boxes;
#error check_composite must never be NULL, because it gets called without a NULL pointer check
//compositor.check_composite = check_composite;
compositor.composite = composite;
//compositor.check_composite_boxes = check_composite_boxes;
compositor.composite_boxes = composite_boxes;
_cairo_atomic_init_once_leave(&once);
}
return &compositor.base;
}
