Source code
Revision control
Copy as Markdown
Other Tools
/* 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
*
* 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):
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairoint.h"
#include "cairo-boxes-private.h"
#include "cairo-xcb-private.h"
#include "cairo-image-surface-private.h"
#include "cairo-surface-backend-private.h"
/* XXX dithering */
typedef struct _cairo_xcb_pixmap {
cairo_surface_t base;
cairo_xcb_connection_t *connection;
cairo_xcb_screen_t *screen;
cairo_surface_t *owner;
xcb_pixmap_t pixmap;
int width;
int height;
int depth;
int x0, y0;
cairo_bool_t repeat;
} cairo_xcb_pixmap_t;
static cairo_status_t
_cairo_xcb_pixmap_finish (void *abstract_surface)
{
cairo_xcb_pixmap_t *surface = abstract_surface;
cairo_status_t status;
if (surface->owner != NULL) {
cairo_surface_destroy (surface->owner);
} else {
status = _cairo_xcb_connection_acquire (surface->connection);
if (unlikely (status))
return status;
_cairo_xcb_connection_free_pixmap (surface->connection,
surface->pixmap);
_cairo_xcb_connection_release (surface->connection);
}
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t _cairo_xcb_pixmap_backend = {
CAIRO_SURFACE_TYPE_XCB,
_cairo_xcb_pixmap_finish,
};
static cairo_xcb_pixmap_t *
_cairo_xcb_pixmap_create (cairo_xcb_surface_t *target,
int width, int height)
{
cairo_xcb_pixmap_t *surface;
surface = _cairo_malloc (sizeof (cairo_xcb_pixmap_t));
if (unlikely (surface == NULL))
return (cairo_xcb_pixmap_t *)
_cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&surface->base,
&_cairo_xcb_pixmap_backend,
NULL,
target->base.content,
FALSE); /* is_vector */
surface->connection = target->connection;
surface->screen = target->screen;
surface->owner = NULL;
surface->width = width;
surface->height = height;
surface->depth = target->depth;
surface->x0 = surface->y0 = 0;
surface->repeat = FALSE;
surface->pixmap =
_cairo_xcb_connection_create_pixmap (surface->connection,
surface->depth,
target->drawable,
width, height);
return surface;
}
static cairo_xcb_pixmap_t *
_cairo_xcb_pixmap_copy (cairo_xcb_surface_t *target)
{
cairo_xcb_pixmap_t *surface;
surface = _cairo_malloc (sizeof (cairo_xcb_pixmap_t));
if (unlikely (surface == NULL))
return (cairo_xcb_pixmap_t *)
_cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&surface->base,
&_cairo_xcb_pixmap_backend,
NULL,
target->base.content,
FALSE); /* is_vector */
surface->connection = target->connection;
surface->screen = target->screen;
surface->pixmap = target->drawable;
surface->owner = cairo_surface_reference (&target->base);
surface->width = target->width;
surface->height = target->height;
surface->depth = target->depth;
surface->x0 = surface->y0 = 0;
surface->repeat = FALSE;
return surface;
}
#if CAIRO_HAS_XCB_SHM_FUNCTIONS
static cairo_status_t
_cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
pixman_format_code_t pixman_format,
int width, int height,
cairo_image_surface_t **image_out,
cairo_xcb_shm_info_t **shm_info_out)
{
cairo_surface_t *image = NULL;
cairo_xcb_shm_info_t *shm_info = NULL;
cairo_status_t status;
size_t size, stride;
if (! (connection->flags & CAIRO_XCB_HAS_SHM))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (unlikely (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX))
return CAIRO_INT_STATUS_UNSUPPORTED;
stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP (pixman_format));
size = stride * height;
if (size <= CAIRO_XCB_SHM_SMALL_IMAGE)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_xcb_connection_allocate_shm_info (connection, size,
FALSE, &shm_info);
if (unlikely (status))
return status;
image = _cairo_image_surface_create_with_pixman_format (shm_info->mem,
pixman_format,
width, height,
stride);
status = image->status;
if (unlikely (status)) {
_cairo_xcb_shm_info_destroy (shm_info);
return status;
}
status = _cairo_user_data_array_set_data (&image->user_data,
(const cairo_user_data_key_t *) connection,
shm_info,
(cairo_destroy_func_t) _cairo_xcb_shm_info_destroy);
if (unlikely (status)) {
cairo_surface_destroy (image);
_cairo_xcb_shm_info_destroy (shm_info);
return status;
}
*image_out = (cairo_image_surface_t *) image;
*shm_info_out = shm_info;
return CAIRO_STATUS_SUCCESS;
}
#else
static cairo_status_t
_cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
pixman_format_code_t pixman_format,
int width, int height,
cairo_image_surface_t **image_out,
cairo_xcb_shm_info_t **shm_info_out)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
#endif
cairo_status_t
_cairo_xcb_shm_image_create (cairo_xcb_connection_t *connection,
pixman_format_code_t pixman_format,
int width, int height,
cairo_image_surface_t **image_out,
cairo_xcb_shm_info_t **shm_info_out)
{
cairo_surface_t *image = NULL;
cairo_xcb_shm_info_t *shm_info = NULL;
cairo_status_t status;
status = _cairo_xcb_shm_image_create_shm (connection,
pixman_format,
width,
height,
image_out,
shm_info_out);
if (status != CAIRO_STATUS_SUCCESS) {
image = _cairo_image_surface_create_with_pixman_format (NULL,
pixman_format,
width, height,
0);
status = image->status;
if (unlikely (status))
return status;
*image_out = (cairo_image_surface_t *) image;
*shm_info_out = shm_info;
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_xcb_pixmap_t *
_pixmap_from_image (cairo_xcb_surface_t *target,
xcb_render_pictformat_t format,
cairo_image_surface_t *image,
cairo_xcb_shm_info_t *shm_info)
{
xcb_gcontext_t gc;
cairo_xcb_pixmap_t *pixmap;
pixmap = _cairo_xcb_pixmap_create (target,
image->width,
image->height);
if (unlikely (pixmap->base.status))
return pixmap;
gc = _cairo_xcb_screen_get_gc (target->screen, pixmap->pixmap, image->depth);
if (shm_info != NULL) {
_cairo_xcb_connection_shm_put_image (target->connection,
pixmap->pixmap, gc,
image->width, image->height,
0, 0,
image->width, image->height,
0, 0,
image->depth,
shm_info->shm,
shm_info->offset);
} else {
int len;
/* Do we need to trim the image? */
len = CAIRO_STRIDE_FOR_WIDTH_BPP (image->width,
PIXMAN_FORMAT_BPP (image->pixman_format));
if (len == image->stride) {
_cairo_xcb_connection_put_image (target->connection,
pixmap->pixmap, gc,
image->width, image->height,
0, 0,
image->depth,
image->stride,
image->data);
} else {
_cairo_xcb_connection_put_subimage (target->connection,
pixmap->pixmap, gc,
0, 0,
image->width, image->height,
PIXMAN_FORMAT_BPP (image->pixman_format) / 8,
image->stride,
0, 0,
image->depth,
image->data);
}
}
_cairo_xcb_screen_put_gc (target->screen, image->depth, gc);
return pixmap;
}
static cairo_xcb_pixmap_t *
_render_to_pixmap (cairo_xcb_surface_t *target,
const cairo_pattern_t *pattern,
const cairo_rectangle_int_t *extents)
{
cairo_image_surface_t *image;
cairo_xcb_shm_info_t *shm_info;
cairo_pattern_union_t copy;
cairo_status_t status;
cairo_xcb_pixmap_t *pixmap;
status = _cairo_xcb_shm_image_create (target->screen->connection,
target->pixman_format,
extents->width, extents->height,
&image, &shm_info);
if (unlikely (status))
return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
_cairo_pattern_init_static_copy (©.base, pattern);
cairo_matrix_translate (©.base.matrix, -extents->x, -extents->y);
status = _cairo_surface_paint (&image->base,
CAIRO_OPERATOR_SOURCE,
©.base,
NULL);
if (unlikely (status)) {
cairo_surface_destroy (&image->base);
return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
}
pixmap = _pixmap_from_image (target, target->xrender_format, image, shm_info);
cairo_surface_destroy (&image->base);
if (unlikely (pixmap->base.status))
return pixmap;
pixmap->x0 = -extents->x;
pixmap->y0 = -extents->y;
return pixmap;
}
static cairo_xcb_pixmap_t *
_copy_to_pixmap (cairo_xcb_surface_t *source)
{
cairo_xcb_pixmap_t *pixmap;
/* If the source may be a window, we need to copy it and its children
* via a temporary pixmap so that we can IncludeInferiors on the source
* and use ClipByChildren on the destination.
*/
if (source->owns_pixmap) {
pixmap = _cairo_xcb_pixmap_copy (source);
if (unlikely (pixmap->base.status))
return pixmap;
} else {
uint32_t values[1];
xcb_gcontext_t gc;
pixmap = _cairo_xcb_pixmap_create (source,
source->width,
source->height);
if (unlikely (pixmap->base.status))
return pixmap;
gc = _cairo_xcb_screen_get_gc (source->screen,
pixmap->pixmap,
pixmap->depth);
values[0] = TRUE;
_cairo_xcb_connection_change_gc (pixmap->connection, gc,
XCB_GC_SUBWINDOW_MODE, values);
_cairo_xcb_connection_copy_area (pixmap->connection,
source->drawable,
pixmap->pixmap, gc,
0, 0,
0, 0,
source->width,
source->height);
values[0] = FALSE;
_cairo_xcb_connection_change_gc (pixmap->connection, gc,
XCB_GC_SUBWINDOW_MODE, values);
_cairo_xcb_screen_put_gc (source->screen,
pixmap->depth,
gc);
}
return pixmap;
}
static cairo_xcb_pixmap_t *
_cairo_xcb_surface_pixmap (cairo_xcb_surface_t *target,
const cairo_surface_pattern_t *pattern,
const cairo_rectangle_int_t *extents,
int tx, int ty)
{
cairo_surface_t *source;
cairo_xcb_pixmap_t *pixmap;
source = pattern->surface;
pixmap = (cairo_xcb_pixmap_t *)
_cairo_surface_has_snapshot (source, &_cairo_xcb_pixmap_backend);
if (pixmap != NULL && pixmap->screen == target->screen)
return (cairo_xcb_pixmap_t *) cairo_surface_reference (&pixmap->base);
if (_cairo_surface_is_xcb(source) &&
((cairo_xcb_surface_t *) source)->screen == target->screen)
{
cairo_xcb_surface_t *xcb_source = (cairo_xcb_surface_t *) source;
if (xcb_source->depth == target->depth)
pixmap = _copy_to_pixmap (xcb_source);
}
#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
else if (source->type == CAIRO_SURFACE_TYPE_XLIB &&
((cairo_xlib_xcb_surface_t *) source)->xcb->screen == target->screen)
{
cairo_xcb_surface_t *xcb_source = ((cairo_xlib_xcb_surface_t *) source)->xcb;
if (xcb_source->depth == target->depth)
pixmap = _copy_to_pixmap (xcb_source);
}
#endif
if (pixmap == NULL) {
cairo_rectangle_int_t rect;
if (! _cairo_surface_get_extents (source, &rect)) {
rect.x = rect.y = 0;
rect.width = target->width;
rect.height = target->height;
}
pixmap = _render_to_pixmap (target, &pattern->base, &rect);
}
if (unlikely (pixmap->base.status))
return pixmap;
_cairo_surface_attach_snapshot (source, &pixmap->base, NULL);
if (pattern->base.extend != CAIRO_EXTEND_NONE) {
if (extents->x < 0 || extents->y < 0 ||
extents->x + extents->width > pixmap->width ||
extents->y + extents->height > pixmap->height)
{
pixmap->repeat = TRUE;
}
}
pixmap->x0 += tx;
pixmap->y0 += ty;
return pixmap;
}
static cairo_xcb_pixmap_t *
_cairo_xcb_pixmap_for_pattern (cairo_xcb_surface_t *target,
const cairo_pattern_t *pattern,
const cairo_rectangle_int_t *extents)
{
int tx, ty;
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SURFACE:
/* Core can only perform a native, unscaled blit, but can handle tiles */
if (_cairo_matrix_is_integer_translation (&pattern->matrix, &tx, &ty)) {
switch (pattern->extend) {
case CAIRO_EXTEND_NONE:
case CAIRO_EXTEND_REPEAT:
return _cairo_xcb_surface_pixmap (target,
(cairo_surface_pattern_t *) pattern,
extents, tx, ty);
default:
case CAIRO_EXTEND_PAD:
case CAIRO_EXTEND_REFLECT:
break;
}
}
/* fallthrough */
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL:
case CAIRO_PATTERN_TYPE_MESH:
case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
return _render_to_pixmap (target, pattern, extents);
default:
case CAIRO_PATTERN_TYPE_SOLID:
ASSERT_NOT_REACHED;
return NULL;
}
}
cairo_status_t
_cairo_xcb_surface_core_copy_boxes (cairo_xcb_surface_t *dst,
const cairo_pattern_t *src_pattern,
const cairo_rectangle_int_t *extents,
const cairo_boxes_t *boxes)
{
cairo_xcb_pixmap_t *src;
const struct _cairo_boxes_chunk *chunk;
xcb_gcontext_t gc;
cairo_status_t status;
status = _cairo_xcb_connection_acquire (dst->connection);
if (unlikely (status))
return status;
src = _cairo_xcb_pixmap_for_pattern (dst, src_pattern, extents);
status = src->base.status;
if (unlikely (status))
goto CLEANUP_CONNECTION;
assert (src->depth == dst->depth);
gc = _cairo_xcb_screen_get_gc (dst->screen, src->pixmap, src->depth);
if (src->repeat) {
uint32_t mask =
XCB_GC_FILL_STYLE |
XCB_GC_TILE |
XCB_GC_TILE_STIPPLE_ORIGIN_X |
XCB_GC_TILE_STIPPLE_ORIGIN_Y;
uint32_t values[] = {
XCB_FILL_STYLE_TILED,
src->pixmap,
- src->x0, - src->y0,
};
xcb_rectangle_t *xcb_rects;
_cairo_xcb_connection_change_gc (dst->connection, gc, mask, values);
for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
int i;
xcb_rects = (xcb_rectangle_t *) chunk->base;
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
xcb_rects[i].x = x1;
xcb_rects[i].y = y1;
xcb_rects[i].width = x2 - x1;
xcb_rects[i].height = y2 - y1;
}
_cairo_xcb_connection_poly_fill_rectangle (dst->connection,
dst->drawable,
gc, chunk->count, xcb_rects);
}
values[0] = 0;
_cairo_xcb_connection_change_gc (dst->connection, gc, XCB_GC_FILL_STYLE, values);
} else {
for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
int i;
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
_cairo_xcb_connection_copy_area (dst->connection,
src->pixmap,
dst->drawable, gc,
src->x0 + x1,
src->y0 + y1,
x1, y1,
x2 - x1, y2 - y1);
}
}
}
_cairo_xcb_screen_put_gc (dst->screen, src->depth, gc);
cairo_surface_destroy (&src->base);
CLEANUP_CONNECTION:
_cairo_xcb_connection_release (dst->connection);
return status;
}
cairo_status_t
_cairo_xcb_surface_core_fill_boxes (cairo_xcb_surface_t *dst,
const cairo_color_t *color,
cairo_boxes_t *boxes)
{
struct _cairo_boxes_chunk *chunk;
xcb_gcontext_t gc;
cairo_status_t status;
status = _cairo_xcb_connection_acquire (dst->connection);
if (unlikely (status))
return status;
gc = _cairo_xcb_screen_get_gc (dst->screen, dst->drawable, dst->depth);
#if 0
xcb_pixmap_t source;
source = _dither_source (dst, color);
XSetTSOrigin (surface->dpy, gc, 0, 0);
XSetTile (surface->dpy, gc, source);
#endif
for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
xcb_rectangle_t *xcb_rects;
int i;
xcb_rects = (xcb_rectangle_t *) chunk->base;
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
xcb_rects[i].x = x1;
xcb_rects[i].y = y1;
xcb_rects[i].width = x2 - x1;
xcb_rects[i].height = y2 - y1;
}
_cairo_xcb_connection_poly_fill_rectangle (dst->connection,
dst->drawable, gc,
chunk->count, xcb_rects);
}
_cairo_xcb_screen_put_gc (dst->screen, dst->depth, gc);
_cairo_xcb_connection_release (dst->connection);
return CAIRO_STATUS_SUCCESS;
}