diff --git a/configure.ac b/configure.ac
index 955f0918fd4..4b5316f4de1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3433,6 +3433,13 @@ if test "${HAVE_X11}" = "yes"; then
CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
if test $HAVE_CAIRO = yes; then
+ CAIRO_XCB_MODULE="cairo-xcb >= $CAIRO_REQUIRED"
+ EMACS_CHECK_MODULES(CAIRO_XCB, $CAIRO_XCB_MODULE)
+ if test $HAVE_CAIRO_XCB = yes; then
+ CAIRO_CFLAGS="$CAIRO_CFLAGS $CAIRO_XCB_CFLAGS"
+ CAIRO_LIBS="$CAIRO_LIBS $CAIRO_XCB_LIBS"
+ AC_DEFINE(USE_CAIRO_XCB, 1, [Define to 1 if cairo XCB surfaces are available.])
+ fi
AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
CFLAGS="$CFLAGS $CAIRO_CFLAGS"
LIBS="$LIBS $CAIRO_LIBS"
diff --git a/src/xterm.c b/src/xterm.c
index 54d10e01c30..d3619f5b5e6 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -99,6 +99,10 @@ along with GNU Emacs. If not, see . */
#include "xterm.h"
#include
+#ifdef USE_XCB
+#include
+#endif
+
/* If we have Xfixes extension, use it for pointer blanking. */
#ifdef HAVE_XFIXES
#include
@@ -206,6 +210,10 @@ along with GNU Emacs. If not, see . */
#include
#endif
+#if defined USE_XCB && defined USE_CAIRO_XCB
+#define USE_CAIRO_XCB_SURFACE
+#endif
+
/* Default to using XIM if available. */
#ifdef USE_XIM
bool use_xim = true;
@@ -777,11 +785,19 @@ x_begin_cr_clip (struct frame *f, GC gc)
{
int width = FRAME_CR_SURFACE_DESIRED_WIDTH (f);
int height = FRAME_CR_SURFACE_DESIRED_HEIGHT (f);
- cairo_surface_t *surface
- = cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
- FRAME_X_RAW_DRAWABLE (f),
- FRAME_X_VISUAL (f),
- width, height);
+ cairo_surface_t *surface;
+#ifdef USE_CAIRO_XCB_SURFACE
+ if (FRAME_DISPLAY_INFO (f)->xcb_visual)
+ surface = cairo_xcb_surface_create (FRAME_DISPLAY_INFO (f)->xcb_connection,
+ (xcb_drawable_t) FRAME_X_RAW_DRAWABLE (f),
+ FRAME_DISPLAY_INFO (f)->xcb_visual,
+ width, height);
+ else
+#endif
+ surface = cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
+ FRAME_X_RAW_DRAWABLE (f),
+ FRAME_X_VISUAL (f),
+ width, height);
cr = FRAME_CR_CONTEXT (f) = cairo_create (surface);
cairo_surface_destroy (surface);
@@ -850,6 +866,9 @@ x_try_cr_xlib_drawable (struct frame *f, GC gc)
switch (cairo_surface_get_type (surface))
{
case CAIRO_SURFACE_TYPE_XLIB:
+#ifdef USE_CAIRO_XCB_SURFACE
+ case CAIRO_SURFACE_TYPE_XCB:
+#endif
cairo_surface_flush (surface);
return true;
@@ -4921,6 +4940,18 @@ x_scroll_run (struct window *w, struct run *run)
x, to_y);
cairo_surface_mark_dirty_rectangle (surface, x, to_y, width, height);
}
+#ifdef USE_CAIRO_XCB_SURFACE
+ else if (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_XCB)
+ {
+ cairo_surface_flush (surface);
+ xcb_copy_area (FRAME_DISPLAY_INFO (f)->xcb_connection,
+ (xcb_drawable_t) FRAME_X_DRAWABLE (f),
+ (xcb_drawable_t) FRAME_X_DRAWABLE (f),
+ (xcb_gcontext_t) XGContextFromGC (f->output_data.x->normal_gc),
+ x, from_y, x, to_y, width, height);
+ cairo_surface_mark_dirty_rectangle (surface, x, to_y, width, height);
+ }
+#endif
else
{
cairo_surface_t *s
@@ -15258,6 +15289,40 @@ x_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
dpyinfo->supports_xdbe = true;
#endif
+#ifdef USE_XCB
+ xcb_screen_t *xcb_screen = NULL;
+ xcb_screen_iterator_t iter;
+ xcb_visualid_t wanted = { XVisualIDFromVisual (dpyinfo->visual) };
+ xcb_depth_iterator_t depth_iter;
+ xcb_visualtype_iterator_t visual_iter;
+
+ int screen = DefaultScreen (dpyinfo->display);
+
+ iter = xcb_setup_roots_iterator (xcb_get_setup (dpyinfo->xcb_connection));
+ for (; iter.rem; --screen, xcb_screen_next (&iter))
+ {
+ if (!screen)
+ xcb_screen = iter.data;
+ }
+
+ if (xcb_screen)
+ {
+ depth_iter = xcb_screen_allowed_depths_iterator (xcb_screen);
+ for (; depth_iter.rem; xcb_depth_next (&depth_iter))
+ {
+ visual_iter = xcb_depth_visuals_iterator (depth_iter.data);
+ for (; visual_iter.rem; xcb_visualtype_next (&visual_iter))
+ {
+ if (wanted == visual_iter.data->visual_id)
+ {
+ dpyinfo->xcb_visual = visual_iter.data;
+ break;
+ }
+ }
+ }
+ }
+#endif
+
#ifdef HAVE_XINPUT2
dpyinfo->supports_xi2 = false;
int rc;
diff --git a/src/xterm.h b/src/xterm.h
index 696f9db3d0a..a8eb6ee547a 100644
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -78,6 +78,9 @@ typedef GtkWidget *xt_or_gtk_widget;
#ifdef CAIRO_HAS_SVG_SURFACE
#include
#endif
+#ifdef USE_CAIRO_XCB
+#include
+#endif
#endif
#ifdef HAVE_X_I18N
@@ -512,6 +515,7 @@ struct x_display_info
#ifdef USE_XCB
xcb_connection_t *xcb_connection;
+ xcb_visualtype_t *xcb_visual;
#endif
#ifdef HAVE_XDBE
diff --git a/src/xwidget.c b/src/xwidget.c
index fce0aafb099..69e9d5b64be 100644
--- a/src/xwidget.c
+++ b/src/xwidget.c
@@ -1855,7 +1855,7 @@ webkit_js_to_lisp (JSCValue *value)
const gint32 dlen = jsc_value_to_int32 (len);
Lisp_Object obj;
- if (! (0 <= dlen && dlen < G_MAXINT32 + 1))
+ if (! (0 <= dlen && dlen < G_MAXINT32))
memory_full (SIZE_MAX);
ptrdiff_t n = dlen;