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_surface_t *
_get_image (cairo_xcb_surface_t *surface,
cairo_bool_t use_shm,
int x, int y,
int width, int height)
{
cairo_surface_t *image;
cairo_xcb_connection_t *connection;
xcb_get_image_reply_t *reply;
cairo_int_status_t status;
assert (surface->fallback == NULL);
assert (x >= 0);
assert (y >= 0);
assert (x + width <= surface->width);
assert (y + height <= surface->height);
if (surface->deferred_clear) {
image =
_cairo_image_surface_create_with_pixman_format (NULL,
surface->pixman_format,
width, height,
0);
if (surface->deferred_clear_color.alpha_short > 0x00ff) {
cairo_solid_pattern_t solid;
_cairo_pattern_init_solid (&solid, &surface->deferred_clear_color);
status = _cairo_surface_paint (image,
CAIRO_OPERATOR_SOURCE,
&solid.base,
NULL);
if (unlikely (status)) {
cairo_surface_destroy (image);
image = _cairo_surface_create_in_error (status);
}
}
return image;
}
connection = surface->connection;
status = _cairo_xcb_connection_acquire (connection);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
if (use_shm) {
image = _get_shm_image (surface, x, y, width, height);
if (image) {
if (image->status) {
_cairo_xcb_connection_release (connection);
return image;
}
cairo_surface_destroy (image);
}
}
status = _cairo_xcb_connection_get_image (connection,
surface->drawable,
x, y,
width, height,
&reply);
if (unlikely (status))
goto FAIL;
if (reply == NULL && ! surface->owns_pixmap) {
/* xcb_get_image_t from a window is dangerous because it can
* produce errors if the window is unmapped or partially
* outside the screen. We could check for errors and
* retry, but to keep things simple, we just create a
* temporary pixmap
*
* If we hit this fallback too often, we should remember so and
* skip the round-trip from the above GetImage request,
* similar to what cairo-xlib does.
*/
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
gc = _cairo_xcb_screen_get_gc (surface->screen,
surface->drawable,
surface->depth);
pixmap = _cairo_xcb_connection_create_pixmap (connection,
surface->depth,
surface->drawable,
width, height);
/* XXX IncludeInferiors? */
_cairo_xcb_connection_copy_area (connection,
surface->drawable,
pixmap, gc,
x, y,
0, 0,
width, height);
_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
status = _cairo_xcb_connection_get_image (connection,
pixmap,
0, 0,
width, height,
&reply);
_cairo_xcb_connection_free_pixmap (connection, pixmap);
if (unlikely (status))
goto FAIL;
}
if (unlikely (reply == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
/* XXX byte swap */
/* XXX format conversion */
assert (reply->depth == surface->depth);
image = _cairo_image_surface_create_with_pixman_format
(xcb_get_image_data (reply),
surface->pixman_format,
width, height,
CAIRO_STRIDE_FOR_WIDTH_BPP (width,
PIXMAN_FORMAT_BPP (surface->pixman_format)));
status = image->status;
if (unlikely (status)) {
free (reply);
goto FAIL;
}
/* XXX */
pixman_image_set_destroy_function (((cairo_image_surface_t *)image)->pixman_image, _destroy_image, reply);
_cairo_xcb_connection_release (connection);
return image;
FAIL:
_cairo_xcb_connection_release (connection);
return _cairo_surface_create_in_error (status);
}
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;
status = _cairo_xcb_connection_take_socket (dst->connection);
if (unlikely (status))
goto CLEANUP_CONNECTION;
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 - x2, y2 - x2);
}
}
}
_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;
}
static cairo_status_t
_get_image (cairo_xcb_surface_t *surface,
cairo_bool_t use_shm,
cairo_image_surface_t **image_out)
{
cairo_image_surface_t *image;
cairo_xcb_connection_t *connection;
xcb_get_image_reply_t *reply;
cairo_status_t status;
if (surface->base.is_clear || surface->deferred_clear) {
image = (cairo_image_surface_t *)
_cairo_image_surface_create_with_pixman_format (NULL,
surface->pixman_format,
surface->width,
surface->height,
0);
*image_out = image;
return image->base.status;
}
connection = surface->connection;
status = _cairo_xcb_connection_acquire (connection);
if (unlikely (status))
return status;
status = _cairo_xcb_connection_take_socket (connection);
if (unlikely (status))
goto FAIL;
if (use_shm) {
status = _get_shm_image (surface, image_out);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto FAIL;
}
if (surface->use_pixmap == 0) {
status = _cairo_xcb_connection_get_image (connection,
surface->drawable,
0, 0,
surface->width,
surface->height,
&reply);
if (unlikely (status))
goto FAIL;
} else {
surface->use_pixmap--;
reply = NULL;
}
if (reply == NULL && ! surface->owns_pixmap) {
/* xcb_get_image_t from a window is dangerous because it can
* produce errors if the window is unmapped or partially
* outside the screen. We could check for errors and
* retry, but to keep things simple, we just create a
* temporary pixmap
*/
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
gc = _cairo_xcb_screen_get_gc (surface->screen,
surface->drawable,
surface->depth);
pixmap = _cairo_xcb_connection_create_pixmap (connection,
surface->depth,
surface->drawable,
surface->width,
surface->height);
/* XXX IncludeInferiors? */
_cairo_xcb_connection_copy_area (connection,
surface->drawable,
pixmap, gc,
0, 0,
0, 0,
surface->width,
surface->height);
_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
status = _cairo_xcb_connection_get_image (connection,
pixmap,
0, 0,
surface->width,
surface->height,
&reply);
_cairo_xcb_connection_free_pixmap (connection, pixmap);
if (unlikely (status))
goto FAIL;
}
if (unlikely (reply == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
/* XXX byte swap */
/* XXX format conversion */
assert (reply->depth == surface->depth);
image = (cairo_image_surface_t *)
_cairo_image_surface_create_with_pixman_format
(xcb_get_image_data (reply),
surface->pixman_format,
surface->width,
surface->height,
CAIRO_STRIDE_FOR_WIDTH_BPP (surface->width,
PIXMAN_FORMAT_BPP (surface->pixman_format)));
status = image->base.status;
if (unlikely (status)) {
free (reply);
goto FAIL;
}
assert (xcb_get_image_data_length (reply) == image->height * image->stride);
pixman_image_set_destroy_function (image->pixman_image, _destroy_image, reply);
_cairo_xcb_connection_release (connection);
/* synchronisation point */
surface->marked_dirty = FALSE;
*image_out = image;
return CAIRO_STATUS_SUCCESS;
FAIL:
_cairo_xcb_connection_release (connection);
return status;
}
