ncmixer

commit bf3bce37aade59912035f0214b8796073a6f309e
parent 9413f4fc2d436144a39293ea7de996fda9a438c4
Author: lostd <lostd@2f30.org>
Date:   Tue,  7 Jun 2016 02:06:56 +0100

Draw the crossfader bar

Diffstat:
M
ncmixer.c
 | 
32
++++++++++++++++++++++++++++++++

1 file changed, 32 insertions(+), 0 deletions(-)
diff --git a/ncmixer.c b/ncmixer.c
@@ -21,6 +21,7 @@
 #define MIN(x, y) ((x) < (y) ? (x) : (y))
 #undef MAX
 #define MAX(x, y) ((x) > (y) ? (x) : (y))
+#define ISODD(x) ((x) & 1)
 #define CONTROL(c) ((c) ^ 0x40)
 #define SA struct sockaddr
 #define CH0_NAME "/tmp/ch0"
@@ -339,6 +340,35 @@ server_listen(char *name)
 }
 
 void
+draw_xfader(void)
+{
+	int i, start, end, len, center;
+	float pos;
+
+	if (COLS < strlen("  -|+|-  "))
+		return;
+
+	start = 2;
+	end = ISODD(COLS) ? COLS - 2 : COLS - 3;
+	len = end - start;
+	center = start + (len - 1) / 2;
+	move(getcury(stdscr), start);
+	for (i = 0; i < len; i++)
+		printw("-");
+
+	pos = xfpos + 1.0; /* make it positive */
+	pos /= 2.0; /* scale it */
+	i = start + (len - 1) * pos;
+	move(getcury(stdscr), i - 1);
+	printw("|||");
+
+	if (i != center - 1 && i != center + 1) {
+		move(getcury(stdscr), center);
+		printw("+");
+	}
+}
+
+void
 draw(void)
 {
 	move(0, 0);
@@ -359,6 +389,8 @@ draw(void)
 	default:
 		printw("direction: none\n");
 	}
+	printw("\n");
+	draw_xfader();
 	refresh();
 }