Merge branch 'visual-bell-remastered'

Closes #1337

CHANGELOG.md

@@ -74,10 +74,13 @@
   - `scrollback-down-page` (shift+page-down)
   - `scrollback-down-half-page` (none)
   - `scrollback-down-line` (none)
+* Support for visual bell which flashes the terminal window.
+  ([#1337][1337]).
 
 [1077]: https://codeberg.org/dnkl/foot/issues/1077
 [1364]: https://codeberg.org/dnkl/foot/issues/1364
 [419]: https://codeberg.org/dnkl/foot/issues/419
+[1337]: https://codeberg.org/dnkl/foot/issues/1337
 
 
 ### Changed

config.c

@@ -1054,6 +1054,8 @@ parse_section_bell(struct context *ctx)
         return value_to_bool(ctx, &conf->bell.urgent);
     else if (strcmp(key, "notify") == 0)
         return value_to_bool(ctx, &conf->bell.notify);
+    else if (strcmp(key, "visual") == 0)
+        return value_to_bool(ctx, &conf->bell.flash);
     else if (strcmp(key, "command") == 0)
         return value_to_spawn_template(ctx, &conf->bell.command);
     else if (strcmp(key, "command-focused") == 0)
@@ -1237,6 +1239,7 @@ parse_section_colors(struct context *ctx)
         return true;
     }
 
+    else if (strcmp(key, "flash") == 0) color = &conf->colors.flash;
     else if (strcmp(key, "foreground") == 0) color = &conf->colors.fg;
     else if (strcmp(key, "background") == 0) color = &conf->colors.bg;
     else if (strcmp(key, "selection-foreground") == 0) color = &conf->colors.selection_fg;
@@ -1320,6 +1323,21 @@ parse_section_colors(struct context *ctx)
         return true;
     }
 
+    else if (strcmp(key, "flash-alpha") == 0) {
+        float alpha;
+        if (!value_to_float(ctx, &alpha))
+            return false;
+
+        if (alpha < 0. || alpha > 1.) {
+            LOG_CONTEXTUAL_ERR("not in range 0.0-1.0");
+            return false;
+        }
+
+        conf->colors.flash_alpha = alpha * 65535.;
+        return true;
+    }
+
+
     else {
         LOG_CONTEXTUAL_ERR("not valid option");
         return false;
@@ -2980,6 +2998,7 @@ config_load(struct config *conf, const char *conf_path,
         .bell = {
             .urgent = false,
             .notify = false,
+            .flash = false,
             .command = {
                 .argv = {.args = NULL},
             },
@@ -3003,6 +3022,8 @@ config_load(struct config *conf, const char *conf_path,
         .colors = {
             .fg = default_foreground,
             .bg = default_background,
+            .flash = 0x7f7f00,
+            .flash_alpha = 0x7fff,
             .alpha = 0xffff,
             .selection_fg = 0x80000000,  /* Use default bg */
             .selection_bg = 0x80000000,  /* Use default fg */

config.h

@@ -160,6 +160,7 @@ struct config {
     struct {
         bool urgent;
         bool notify;
+        bool flash;
         struct config_spawn_template command;
         bool command_focused;
     } bell;
@@ -202,6 +203,8 @@ struct config {
     struct {
         uint32_t fg;
         uint32_t bg;
+        uint32_t flash;
+        uint32_t flash_alpha;
         uint32_t table[256];
         uint16_t alpha;
         uint32_t selection_fg;

doc/foot.ini.5.scd

@@ -394,6 +394,10 @@ Note: do not set *TERM* here; use the *term* option in the main
 
 	Default: _no_
 
+*visual*
+	When set to _yes_, foot will flash the terminal window. Default:
+	_no_
+
 *command*
 	When set, foot will execute this command when *BEL* is received.
 	Default: none
@@ -642,6 +646,13 @@ can configure the background transparency with the _alpha_ option.
 	Color to use for the underline used to highlight URLs in URL
 	mode. Default: _regular3_.
 
+*flash*
+	Color to use for the terminal window flash. Default: _7f7f00_.
+
+*flash-alpha*
+	Flash translucency. A value in the range 0.0-1.0, where 0.0 means
+	completely transparent, and 1.0 is opaque. Default: _0.5_.
+
 # SECTION: csd
 
 This section controls the look of the _CSDs_ (Client Side

foot.ini

@@ -43,6 +43,7 @@
 [bell]
 # urgent=no
 # notify=no
+# visual=no
 # command=
 # command-focused=no
 
@@ -77,6 +78,8 @@
 # alpha=1.0
 # background=242424
 # foreground=ffffff
+# flash=7f7f00
+# flash-alpha=0.5
 
 ## Normal/regular colors (color palette 0-7)
 # regular0=242424  # black

render.c

@@ -1588,7 +1588,9 @@ render_overlay(struct terminal *term)
         break;
 
     case OVERLAY_FLASH:
-        color = (pixman_color_t){.red=0x7fff, .green=0x7fff, .blue=0, .alpha=0x7fff};
+        color = color_hex_to_pixman_with_alpha(
+                term->conf->colors.flash,
+                term->conf->colors.flash_alpha);
         break;
     }
 
@@ -2193,7 +2195,7 @@ render_csd_button_maximize_maximized(
             { x_margin + shrink, y_margin + thick, thick, width - 2 * thick - shrink },
             { x_margin + width - thick - shrink, y_margin + thick, thick, width - 2 * thick - shrink },
             { x_margin + shrink, y_margin + width - thick - shrink, width - 2 * shrink, thick }});
-    
+
     pixman_image_unref(src);
 
 }

terminal.c

@@ -3270,6 +3270,7 @@ term_flash(struct terminal *term, unsigned duration_ms)
 void
 term_bell(struct terminal *term)
 {
+
     if (!term->bell_action_enabled)
         return;
 
@@ -3288,6 +3289,9 @@ term_bell(struct terminal *term)
     if (term->conf->bell.notify)
         notify_notify(term, "Bell", "Bell in terminal");
 
+    if (term->conf->bell.flash)
+        term_flash(term, 100);
+
     if ((term->conf->bell.command.argv.args != NULL) &&
         (!term->kbd_focus || term->conf->bell.command_focused))
     {