gtk inline preedit

gtk/main.c

@@ -12,6 +12,8 @@ struct Im
 {
 	GtkIMContext parent;
 	int fd;
+	char pre[256];
+	int prelen;
 };
 
 typedef struct ImClass ImClass;
@@ -44,8 +46,8 @@ srvconnect(Im *im)
 static int
 readresp(Im *im, char *buf, int bufsz)
 {
-	unsigned char hdr[2];
-	int n;
+	unsigned char hdr[2], pl;
+	int n, was;
 
 	if(read(im->fd, hdr, 2) != 2)
 		return -1;
@@ -56,6 +58,21 @@ readresp(Im *im, char *buf, int bufsz)
 			return -1;
 		buf[n] = '\0';
 	}
+	if(read(im->fd, &pl, 1) != 1)
+		return -1;
+	if(pl >= sizeof(im->pre))
+		return -1;
+	was = im->prelen;
+	if(pl > 0 && read(im->fd, im->pre, pl) != pl)
+		return -1;
+	im->pre[pl] = '\0';
+	im->prelen = pl;
+	if(was == 0 && pl > 0)
+		g_signal_emit_by_name(im, "preedit-start");
+	if(was != 0 || pl != 0)
+		g_signal_emit_by_name(im, "preedit-changed");
+	if(was > 0 && pl == 0)
+		g_signal_emit_by_name(im, "preedit-end");
 	return hdr[0];
 }
 
@@ -92,7 +109,7 @@ sendreset(Im *im)
 
 	if(im->fd < 0)
 		return;
-	buf[0] = 0;
+	buf[0] = 1;
 	buf[1] = 0;
 	buf[2] = Kesc & 0xff;
 	buf[3] = Kesc >> 8;
@@ -119,7 +136,7 @@ kpress(GtkIMContext *ctx, GdkEventKey *ev)
 	if(key == 0)
 		return FALSE;
 	mod = mget(ev->state);
-	buf[0] = 0;
+	buf[0] = 1;
 	buf[1] = mod;
 	buf[2] = key & 0xff;
 	buf[3] = key >> 8;
@@ -133,6 +150,25 @@ kpress(GtkIMContext *ctx, GdkEventKey *ev)
 	return r != 0;
 }
 
+static void
+getpreedit(GtkIMContext *ctx, gchar **str, PangoAttrList **attrs,
+	gint *cursor_pos)
+{
+	Im *im;
+	PangoAttribute *u;
+
+	im = (Im*)ctx;
+	*str = g_strdup(im->pre);
+	*attrs = pango_attr_list_new();
+	if(im->prelen > 0){
+		u = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
+		u->start_index = 0;
+		u->end_index = im->prelen;
+		pango_attr_list_insert(*attrs, u);
+	}
+	*cursor_pos = g_utf8_strlen(im->pre, -1);
+}
+
 static void
 reset(GtkIMContext *ctx)
 {
@@ -171,6 +207,7 @@ classinit(ImClass *klass)
 	ic = GTK_IM_CONTEXT_CLASS(klass);
 	oc = G_OBJECT_CLASS(klass);
 	ic->filter_keypress = kpress;
+	ic->get_preedit_string = getpreedit;
 	ic->reset = reset;
 	ic->focus_out = focusout;
 	oc->finalize = finalize;

srv.c

@@ -4,14 +4,14 @@
 static char adir[40];
 
 static void
-sendkey(int fd, u32int ks, u32int mod)
+sendkey(int fd, u32int ks, u32int mod, int want)
 {
 	Keyreq kr;
 
 	kr.fd = fd;
 	kr.ks = ks;
 	kr.mod = mod;
-	kr.want = 0;
+	kr.want = want;
 	chansend(keyc, &kr);
 }
 
@@ -24,7 +24,7 @@ clientthread(void *arg)
 	fd = (int)(uintptr)arg;
 	threadsetname("client %d", fd);
 	while(read(fd, req, 4) == 4)
-		sendkey(fd, req[2] | (req[3] << 8), req[1]);
+		sendkey(fd, req[2] | (req[3] << 8), req[1], req[0]);
 	close(fd);
 }