support a visual bell

5 files changed, 18 insertions, 2 deletions

diff --git a/display.c b/display.c
index f8416cc..0084348 100644
--- a/display.c
+++ b/display.c
@@ -312,6 +312,11 @@ void runes_display_hide_cursor(RunesTerm *t)
     t->show_cursor = 0;
 }
 
+void runes_display_visual_bell(RunesTerm *t)
+{
+    runes_window_backend_visual_bell(t);
+}
+
 static cairo_scaled_font_t *runes_display_make_font(RunesTerm *t)
 {
     cairo_font_face_t *font_face;
diff --git a/display.h b/display.h
index 11a26a0..ca117d4 100644
--- a/display.h
+++ b/display.h
@@ -26,5 +26,6 @@ void runes_display_set_bg_color(RunesTerm *t, cairo_pattern_t *color);
 void runes_display_reset_bg_color(RunesTerm *t);
 void runes_display_show_cursor(RunesTerm *t);
 void runes_display_hide_cursor(RunesTerm *t);
+void runes_display_visual_bell(RunesTerm *t);
 
 #endif
diff --git a/parser.c b/parser.c
index d1be71e..7edf6dc 100644
--- a/parser.c
+++ b/parser.c
@@ -2125,8 +2125,7 @@ static void runes_parser_handle_text(RunesTerm *t, char *text, size_t len)
 
 static void runes_parser_handle_bel(RunesTerm *t)
 {
-    /* XXX */
-    UNUSED(t);
+    runes_display_visual_bell(t);
 }
 
 static void runes_parser_handle_bs(RunesTerm *t)
diff --git a/window-xlib.c b/window-xlib.c
index 4338065..3f19168 100644
--- a/window-xlib.c
+++ b/window-xlib.c
@@ -197,6 +197,16 @@ void runes_window_backend_set_window_title(
         (unsigned char *)name, len);
 }
 
+void runes_window_backend_visual_bell(RunesTerm *t)
+{
+    cairo_pattern_t *white;
+
+    white = cairo_pattern_create_rgb(1.0, 1.0, 1.0);
+    cairo_set_source(t->backend_cr, white);
+    cairo_paint(t->backend_cr);
+    runes_window_backend_flush(t);
+}
+
 void runes_window_backend_request_close(RunesTerm *t)
 {
     XEvent e;
diff --git a/window-xlib.h b/window-xlib.h
index edcd24b..222a68c 100644
--- a/window-xlib.h
+++ b/window-xlib.h
@@ -37,6 +37,7 @@ void runes_window_backend_get_size(RunesTerm *t, int *xpixel, int *ypixel);
 void runes_window_backend_set_icon_name(RunesTerm *t, char *name, size_t len);
 void runes_window_backend_set_window_title(
     RunesTerm *t, char *name, size_t len);
+void runes_window_backend_visual_bell(RunesTerm *t);
 void runes_window_backend_request_close(RunesTerm *t);
 void runes_window_backend_cleanup(RunesTerm *t);