From 5d702e6fbf75a1e0427694edc3d86f5a48e6a4cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Mon, 20 Jan 2020 18:36:19 +0100
Subject: [PATCH] osc: implement OSC 12 and OSC 112 (set/reset text cursor
 color)

---
 foot.info |  2 ++
 osc.c     | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/foot.info b/foot.info
index 16327ca2..3e74caf2 100644
--- a/foot.info
+++ b/foot.info
@@ -26,6 +26,8 @@ foot+base|foot base fragment,
     it#8,
     lines#24,
     pairs#0x10000,
+    Cr=\E]112\007,
+    Cs=\E]12;%p1%s\007,
     acsc=``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
     bel=^G,
     blink=\E[5m,
diff --git a/osc.c b/osc.c
index d327d376..0b1d04d9 100644
--- a/osc.c
+++ b/osc.c
@@ -502,6 +502,27 @@ osc_dispatch(struct terminal *term)
     }
 
     case 12: /* Set cursor color */
+
+        /* Client queried for current value */
+        if (strlen(string) == 1 && string[0] == '?') {
+            uint8_t r = (term->cursor_color.text >> 16) & 0xff;
+            uint8_t g = (term->cursor_color.text >>  8) & 0xff;
+            uint8_t b = (term->cursor_color.text >>  0) & 0xff;
+
+            char reply[32];
+            snprintf(reply, sizeof(reply), "\033]12;rgb:%02x/%02x/%02x\033\\", r, g, b);
+            term_to_slave(term, reply, strlen(reply));
+            break;
+        }
+
+        uint32_t color;
+        if (string[0] == '#' ? !parse_legacy_color(string, &color) : !parse_rgb(string, &color))
+            break;
+
+        LOG_INFO("change cursor color to %06x", color);
+
+        term->cursor_color.cursor = 1 << 31 | color;
+        render_refresh(term);
         break;
 
     case 30:  /* Set tab title */
@@ -557,6 +578,13 @@ osc_dispatch(struct terminal *term)
         render_refresh(term);
         break;
 
+    case 112:
+        LOG_DBG("resetting cursor color");
+        term->cursor_color.text = term->default_cursor_color.text;
+        term->cursor_color.cursor = term->default_cursor_color.cursor;
+        render_refresh(term);
+        break;
+
     case 555:
         osc_flash(term);
         break;