[PATCH] Add fast blink support

From: Anders Eurenius <aes_AT_spotify.com>
Date: Sun, 22 Jun 2014 16:02:06 +0200

Fast blink is implemented using the new main loop changes. It may mark a
few characters too many as dirty when the blink state hasn't changed,
but it's not a major issue.

Signed-off-by: Roberto E. Vargas Caballero <k0ga_AT_shike2.com>

---
 st.c | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)
diff --git a/st.c b/st.c
index 0c917fd..ba769c5 100644
--- a/st.c
+++ b/st.c
_AT_@ -406,6 +406,7 @@ static void ttyresize(void);
 static void ttysend(char *, size_t);
 static void ttywrite(const char *, size_t);
 static void tstrsequence(uchar c);
+static int tsetblinks(struct timespec *);
 
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
_AT_@ -3261,6 +3262,9 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
 	if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
 		fg = bg;
 
+	if(base.mode & ATTR_FASTBLINK && term.mode & MODE_FBLINK)
+		fg = bg;
+
 	if(base.mode & ATTR_INVISIBLE)
 		fg = bg;
 
_AT_@ -3768,6 +3772,26 @@ resize(XEvent *e) {
 	cresize(e->xconfigure.width, e->xconfigure.height);
 }
 
+int
+tsetblinks(struct timespec *now) {
+	unsigned long long int t;
+	int blink, fblink, change = 0;
+
+	t = now->tv_sec * 1000 + now->tv_nsec / 1000000;
+	blink = (t / blinktimeout) & 1;
+	if(!!(term.mode & MODE_BLINK) != blink)
+		change = 1;
+
+	fblink = (t / (blinktimeout / 4)) & 1;
+	if(!!(term.mode & MODE_FBLINK) != fblink)
+		change = 1;
+
+	MODBIT(term.mode, blink, MODE_BLINK);
+	MODBIT(term.mode, fblink, MODE_FBLINK);
+
+	return change;
+}
+
 void
 run(void) {
 	XEvent ev;
_AT_@ -3824,10 +3848,9 @@ run(void) {
 		tv = &drawtimeout;
 
 		dodraw = 0;
-		if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
+		if(blinktimeout && blinkset && tsetblinks(&now)) {
 			tsetdirtattr(ATTR_BLINK);
-			term.mode ^= MODE_BLINK;
-			lastblink = now;
+			tsetdirtattr(ATTR_FASTBLINK);
 			dodraw = 1;
 		}
 		deltatime = TIMEDIFF(now, last);
-- 
1.8.5.3
--7JfCtLOvnd9MIVvH--

Received on Mon Sep 17 2001 - 00:00:00 CEST