cairo-boilerplate-xcb.c [plain text]
#include "cairo-boilerplate.h"
#include "cairo-boilerplate-xcb-private.h"
#include <cairo-xcb-xrender.h>
#include <xcb/xcb_renderutil.h>
typedef struct _xcb_target_closure
{
xcb_connection_t *c;
xcb_pixmap_t pixmap;
} xcb_target_closure_t;
void
_cairo_boilerplate_xcb_synchronize (void *closure)
{
xcb_target_closure_t *xtc = closure;
free (xcb_get_image_reply (xtc->c,
xcb_get_image (xtc->c, XCB_IMAGE_FORMAT_Z_PIXMAP,
xtc->pixmap, 0, 0, 1, 1, ~0UL),
0));
}
cairo_surface_t *
_cairo_boilerplate_xcb_create_surface (const char *name,
cairo_content_t content,
int width,
int height,
int max_width,
int max_height,
cairo_boilerplate_mode_t mode,
int id,
void **closure)
{
xcb_screen_t *root;
xcb_target_closure_t *xtc;
xcb_connection_t *c;
xcb_render_pictforminfo_t *render_format;
xcb_pict_standard_t format;
*closure = xtc = xmalloc (sizeof (xcb_target_closure_t));
if (width == 0)
width = 1;
if (height == 0)
height = 1;
xtc->c = c = xcb_connect(NULL,NULL);
if (xcb_connection_has_error(c)) {
CAIRO_BOILERPLATE_LOG ("Failed to connect to X server through XCB\n");
return NULL;
}
root = xcb_setup_roots_iterator(xcb_get_setup(c)).data;
xtc->pixmap = xcb_generate_id (c);
xcb_create_pixmap (c, 32, xtc->pixmap, root->root,
width, height);
switch (content) {
case CAIRO_CONTENT_COLOR:
format = XCB_PICT_STANDARD_RGB_24;
break;
case CAIRO_CONTENT_COLOR_ALPHA:
format = XCB_PICT_STANDARD_ARGB_32;
break;
case CAIRO_CONTENT_ALPHA:
default:
CAIRO_BOILERPLATE_LOG ("Invalid content for XCB test: %d\n", content);
return NULL;
}
render_format = xcb_render_util_find_standard_format (xcb_render_util_query_formats (c), format);
if (render_format->id == 0)
return NULL;
return cairo_xcb_surface_create_with_xrender_format (c, xtc->pixmap, root,
render_format,
width, height);
}
void
_cairo_boilerplate_xcb_cleanup (void *closure)
{
xcb_target_closure_t *xtc = closure;
xcb_free_pixmap (xtc->c, xtc->pixmap);
xcb_disconnect (xtc->c);
free (xtc);
}