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)) { fprintf (stderr, "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: /* would be XCB_PICT_STANDARD_A_8 */ default: fprintf (stderr, "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); }
int main(int, char **) { int primaryScreen = 0; xcb_generic_error_t *error = 0; xcb_connection_t *connection = xcb_connect("", &primaryScreen); xcb_render_query_pict_formats_cookie_t formatsCookie = xcb_render_query_pict_formats(connection); xcb_render_query_pict_formats_reply_t *formatsReply = xcb_render_query_pict_formats_reply( connection, formatsCookie, &error); xcb_render_util_find_standard_format(formatsReply, XCB_PICT_STANDARD_ARGB_32); return 0; }
static cairo_surface_t * _cairo_boilerplate_xcb_create_surface (const char *name, cairo_content_t content, double width, double height, double max_width, double 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; xcb_void_cookie_t cookie; cairo_surface_t *surface; cairo_status_t status; *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)) { fprintf (stderr, "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); switch (content) { case CAIRO_CONTENT_COLOR: cookie = xcb_create_pixmap_checked (c, 24, xtc->pixmap, root->root, width, height); format = XCB_PICT_STANDARD_RGB_24; break; case CAIRO_CONTENT_COLOR_ALPHA: cookie = xcb_create_pixmap_checked (c, 32, xtc->pixmap, root->root, width, height); format = XCB_PICT_STANDARD_ARGB_32; break; case CAIRO_CONTENT_ALPHA: /* would be XCB_PICT_STANDARD_A_8 */ default: fprintf (stderr, "Invalid content for XCB test: %d\n", content); return NULL; } /* slow, but sure */ if (xcb_request_check (c, cookie) != NULL) { xcb_disconnect (c); free (xtc); return NULL; } render_format = xcb_render_util_find_standard_format (xcb_render_util_query_formats (c), format); if (render_format->id == 0) return NULL; surface = cairo_xcb_surface_create_with_xrender_format (c, xtc->pixmap, root, render_format, width, height); status = cairo_surface_set_user_data (surface, &xcb_closure_key, xtc, NULL); if (status == CAIRO_STATUS_SUCCESS) return surface; cairo_surface_destroy (surface); surface = cairo_boilerplate_surface_create_in_error (status); _cairo_boilerplate_xcb_cleanup (xtc); return surface; }