From d25d0ca1a3682d97df67f62789767562aa5bf1b3 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Mon, 18 May 2020 23:45:03 -0400
Subject: devdraw, libdraw: handle keyboard runes > U+FFFF

Runes in Plan 9 were limited to the 16-bit BMP when I drew up
the RPC protocol between graphical programs and devdraw
a long time ago. Now that they can be 32-bit, use a 32-bit wire
encoding too. A new message number to avoid problems with
other clients (like 9fans.net/go).

Add keyboard shortcut alt : , for U+1F602, face with tears of joy,
to test that it all works.
---
 src/cmd/devdraw/mklatinkbd.c | 2 +-
 src/cmd/devdraw/srv.c        | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

(limited to 'src/cmd/devdraw')

diff --git a/src/cmd/devdraw/mklatinkbd.c b/src/cmd/devdraw/mklatinkbd.c
index db34b6ec..50dd26b0 100644
--- a/src/cmd/devdraw/mklatinkbd.c
+++ b/src/cmd/devdraw/mklatinkbd.c
@@ -191,7 +191,7 @@ readfile(char *fname)
 
 		r = strtol(line, nil, 16);
 		p = strchr(line, ' ');
-		if(r == 0 || p != line+4 || p[0] != ' ' || p[1] != ' ') {
+		if(r == 0 || (p != line+4 && p != line+5) || p[0] != ' ' || (p == line+4 && p[1] != ' ')) {
 			fprint(2, "%s:%d: cannot parse line\n", fname, lineno);
 			continue;
 		}
diff --git a/src/cmd/devdraw/srv.c b/src/cmd/devdraw/srv.c
index bdfc1654..05a08fda 100644
--- a/src/cmd/devdraw/srv.c
+++ b/src/cmd/devdraw/srv.c
@@ -229,6 +229,7 @@ runmsg(Client *c, Wsysmsg *m)
 		break;
 
 	case Trdkbd:
+	case Trdkbd4:
 		qlock(&c->eventlk);
 		if((c->kbdtags.wi+1)%nelem(c->kbdtags.t) == c->kbdtags.ri) {
 			qunlock(&c->eventlk);
@@ -236,7 +237,7 @@ runmsg(Client *c, Wsysmsg *m)
 			replyerror(c, m);
 			break;
 		}
-		c->kbdtags.t[c->kbdtags.wi++] = m->tag;
+		c->kbdtags.t[c->kbdtags.wi++] = (m->tag<<1) | (m->type==Trdkbd4);
 		if(c->kbdtags.wi == nelem(c->kbdtags.t))
 			c->kbdtags.wi = 0;
 		c->kbd.stall = 0;
@@ -357,13 +358,17 @@ replymsg(Client *c, Wsysmsg *m)
 static void
 matchkbd(Client *c)
 {
+	int tag;
 	Wsysmsg m;
 
 	if(c->kbd.stall)
 		return;
 	while(c->kbd.ri != c->kbd.wi && c->kbdtags.ri != c->kbdtags.wi){
+		tag = c->kbdtags.t[c->kbdtags.ri++];
 		m.type = Rrdkbd;
-		m.tag = c->kbdtags.t[c->kbdtags.ri++];
+		if(tag&1)
+			m.type = Rrdkbd4;
+		m.tag = tag>>1;
 		if(c->kbdtags.ri == nelem(c->kbdtags.t))
 			c->kbdtags.ri = 0;
 		m.rune = c->kbd.r[c->kbd.ri++];
-- 
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