st

commit c07885e9fac0a29f8a610394329052fb026207dc
parent def6d57eb26df26ed808adb4226c842c2d121792
Author: siduck <siduck@tutanota.com>
Date:   Tue, 12 Apr 2022 10:02:41 +0530

Merge pull request #33 from DEliasVCruz/blinkcursor

feat: add blinking cursor patch support
Diffstat:
M
config.def.h
 | 
18
++++++++++++------
M
x.c
 | 
42
++++++++++++++++++++++++++++++------------

2 files changed, 42 insertions(+), 18 deletions(-)
diff --git a/config.def.h b/config.def.h
@@ -153,13 +153,19 @@ unsigned int defaultcs = 256;
 unsigned int defaultrcs = 257;
 
 /*
- * Default shape of cursor
- * 2: Block ("█")
- * 4: Underline ("_")
- * 6: Bar ("|")
- * 7: Snowman ("☃")
+ * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h4-Functions-using-CSI-_-ordered-by-the-final-character-lparen-s-rparen:CSI-Ps-SP-q.1D81
+ * Default style of cursor
+ * 0: Blinking block
+ * 1: Blinking block (default)
+ * 2: Steady block ("█")
+ * 3: Blinking underline
+ * 4: Steady underline ("_")
+ * 5: Blinking bar
+ * 6: Steady bar ("|")
+ * 7: Blinking st cursor
+ * 8: Steady st cursor
  */
-static unsigned int cursorshape = 2;
+static unsigned int cursorshape = 1;
 
 /*
  * Default columns and rows numbers
diff --git a/x.c b/x.c
@@ -265,6 +265,7 @@ static char *opt_name  = NULL;
 static char *opt_title = NULL;
 
 static int oldbutton = 3; /* button event on startup: 3 = release */
+static int cursorblinks = 0;
 
 void
 clipcopy(const Arg *dummy)
@@ -315,7 +316,7 @@ changealpha(const Arg *arg)
         alpha = 0;
     if(alpha > 1)
         alpha = 1;
-    
+
     xloadcols();
     redraw();
 }
@@ -1648,15 +1649,19 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int le
 	/* draw the new one */
 	if (IS_SET(MODE_FOCUSED)) {
 		switch (win.cursor) {
-		case 7: /* st extension: snowman (U+2603) */
-			g.u = 0x2603;
-		case 0: /* Blinking Block */
-		case 1: /* Blinking Block (Default) */
-		case 2: /* Steady Block */
+		case 0: /* Blinking block */
+		case 1: /* Blinking block (default) */
+			if (IS_SET(MODE_BLINK))
+				break;
+			/* FALLTHROUGH */
+		case 2: /* Steady block */
 			xdrawglyph(g, cx, cy);
 			break;
-		case 3: /* Blinking Underline */
-		case 4: /* Steady Underline */
+		case 3: /* Blinking underline */
+			if (IS_SET(MODE_BLINK))
+				break;
+			/* FALLTHROUGH */
+		case 4: /* Steady underline */
 			XftDrawRect(xw.draw, &drawcol,
 					borderpx + cx * win.cw,
 					borderpx + (cy + 1) * win.ch - \
@@ -1664,13 +1669,19 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int le
 					win.cw, cursorthickness);
 			break;
 		case 5: /* Blinking bar */
+			if (IS_SET(MODE_BLINK))
+				break;
+			/* FALLTHROUGH */
 		case 6: /* Steady bar */
 			XftDrawRect(xw.draw, &drawcol,
 					borderpx + cx * win.cw,
 					borderpx + cy * win.ch,
 					cursorthickness, win.ch);
 			break;
-		}
+		case 7: /* Blinking st cursor */
+			if (IS_SET(MODE_BLINK))
+				break;
+        }
 	} else {
 		XftDrawRect(xw.draw, &drawcol,
 				borderpx + cx * win.cw,
@@ -1817,9 +1828,12 @@ int
 xsetcursor(int cursor)
 {
 	DEFAULT(cursor, 1);
-	if (!BETWEEN(cursor, 0, 6))
+	if (!BETWEEN(cursor, 0, 8)) /* 7-8: st extensions */
 		return 1;
 	win.cursor = cursor;
+	cursorblinks = win.cursor == 0 || win.cursor == 1 ||
+	               win.cursor == 3 || win.cursor == 5 ||
+	               win.cursor == 7;
 	return 0;
 }
 
@@ -2058,6 +2072,10 @@ run(void)
 		if (FD_ISSET(ttyfd, &rfd) || xev) {
 			if (!drawing) {
 				trigger = now;
+				if (IS_SET(MODE_BLINK)) {
+					win.mode ^= MODE_BLINK;
+				}
+				lastblink = now;
 				drawing = 1;
 			}
 			timeout = (maxlatency - TIMEDIFF(now, trigger)) \
@@ -2068,7 +2086,7 @@ run(void)
 
 		/* idle detected or maxlatency exhausted -> draw */
 		timeout = -1;
-		if (blinktimeout && tattrset(ATTR_BLINK)) {
+		if (blinktimeout && (cursorblinks || tattrset(ATTR_BLINK))) {
 			timeout = blinktimeout - TIMEDIFF(now, lastblink);
 			if (timeout <= 0) {
 				if (-timeout > blinktimeout) /* start visible */
@@ -2281,7 +2299,7 @@ main(int argc, char *argv[])
 {
 	xw.l = xw.t = 0;
 	xw.isfixed = False;
-	win.cursor = cursorshape;
+	xsetcursor(cursorshape);
 
 	ARGBEGIN {
 	case 'a':