sfeed_curses

commit fd900052a71824adf321d6c11bfe3398105e3da5
parent 6e524876311fad92e9501cf04bfd9db88f1732ba
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Wed, 19 Aug 2020 19:05:48 +0200

improve cursor visibility and behaviour on some terminals

This is for terminals that cannot hide the cursor.

Noticed on OpenBSD, DragonFlyBSD and Illumos/OpenIndiana.

Diffstat:
M
sfeed_curses.c
 | 
26
+++++++++++++++++---------

1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/sfeed_curses.c b/sfeed_curses.c
@@ -411,24 +411,32 @@ cursormode(int on)
 }
 
 void
-cursorsave(void)
+cursormove(int x, int y)
 {
-	/*ttywrite("\x1b""7");*/
-	ttywrite(tparm(save_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+	/*ttywritef("\x1b[%d;%dH", y + 1, x + 1);*/
+	ttywrite(tparm(cursor_address, y, x, 0, 0, 0, 0, 0, 0, 0));
 }
 
 void
-cursorrestore(void)
+cursorsave(void)
 {
-	/*ttywrite("\x1b""8");*/
-	ttywrite(tparm(restore_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+	/*ttywrite("\x1b""7");*/ /* save cursor */
+
+	/* do not save the cursor if it won't be restored anyway */
+	if (cursor_invisible)
+		ttywrite(tparm(save_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
 }
 
 void
-cursormove(int x, int y)
+cursorrestore(void)
 {
-	/*ttywritef("\x1b[%d;%dH", y + 1, x + 1);*/
-	ttywrite(tparm(cursor_address, y, x, 0, 0, 0, 0, 0, 0, 0));
+	/*ttywrite("\x1b""8");*/ /* restore cursor */
+
+	/* if the cursor cannot be hidden then move to a consistent position */
+	if (cursor_invisible)
+		ttywrite(tparm(restore_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+	else
+		cursormove(0, 0);
 }
 
 void