shithub: pplay

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cmd: add commands: j (jump) L (left bound) R (right bound)

also add a function for pixel to absolute offset;  use offsets
only in draw.c setters instead of a mix of both;  force aligned
offsets always

--- a/cmd.c

+++ b/cmd.c

@@ -10,7 +10,38 @@

 static int epfd[2];

+// FIXME: cursor moves too fast

 static int

+setright(char *s)

+{

+	vlong off, m;

+

+	off = atoll(s) * Sampsz;

+	if(current->cur > off){

+		m = Rate * Sampsz;

+		setjump(off - m >= 0 ? off - m : 0);

+	}

+	return setloop(off);

+}

+

+static int

+setleft(char *s)

+{

+	vlong off;

+

+	off = atoll(s) * Sampsz;

+	if(current->cur < off)

+		setjump(off + Sampsz);

+	return setloop(off);

+}

+

+static int

+jumpto(char *s)

+{

+	return setjump(atoll(s) * Sampsz);

+}

+

+static int

 paste(char *)

 {

 	return cpaste(current) == 0 ? 1 : -1;

@@ -224,8 +255,12 @@

 	case '<': x = pipefrom(s); break;

 	case '^': x = pipethrough(s); break;

 	case '|': x = pipeto(s); break;

+	case 'L': x = setleft(s); break;

+	case 'R': x = setright(s); break;

 	case 'c': x = copy(s); break;

 	case 'd': x = cut(s); break;

+	case 'j': x = jumpto(s); break;

+	//case 'm': x = mark(s); break;

 	case 'p': x = paste(s); break;

 	case 'q': threadexitsall(nil);

 	case 'r': x = readfrom(s); break;

--- a/draw.c

+++ b/draw.c

@@ -302,8 +302,8 @@

 void

 setrange(usize from, usize to)

 {

-	assert((from & 3) == 0);

-	assert((to & 3) == 0);

+	from &= ~3;

+	to &= ~3;

 	if(current->from > views)

 		drawpos(current->from, view);

 	if(current->to < viewe)

@@ -318,41 +318,40 @@

 static int

 setcur(usize off)

 {

+	off &= ~3;

 	if(off < current->from || off > current->to - Outsz){

-		werrstr("cannot jump outside of loop bounds\n");

+		werrstr("cannot jump outside of loop bounds");

 		return -1;

 	}

 	current->off = current->cur = off;

-	if(paused)

-		update(0, 0);

 	return 0;

 }

-void

+int

 setloop(vlong off)

 {

-	off *= T;

-	off += views;

-	if(off < 0 || off > current->totalsz)

-		return;

+	off &= ~3;

+	if(off < 0 || off > current->totalsz){

+		werrstr("invalid range");

+		return -1;

+	}

 	if(off < current->cur)

 		setrange(off, current->to);

 	else

 		setrange(current->from, off);

-	if(paused)

-		update(0, 0);

+	return 0;

 }

-void

-setjump(usize off)

+int

+setjump(vlong off)

 {

-	setcur(off);

+	return setcur(off) & ~3;

 }

-void

-setofs(usize ofs)

+vlong

+p2off(int x)

 {

-	setcur(views + ofs * T);

+	return views + x * T & ~3;

 }

 static void

--- a/fns.h

+++ b/fns.h

@@ -14,11 +14,11 @@

 void	setzoom(int, int);

 int	zoominto(vlong, vlong);

 void	setrange(usize, usize);

-void	setloop(vlong);

-void	setofs(usize);

+int	setloop(vlong);

 void	setpan(int);

 void	setpage(int);

-void	setjump(usize);

+int	setjump(vlong);

+vlong	p2off(int);

 void	redraw(int);

 void	initdrw(int);

 int	advance(Dot*, usize);

--- a/pplay.c

+++ b/pplay.c

@@ -137,8 +137,8 @@

 			if(eqpt(mo.xy, ZP))

 				mo = mc->Mouse;

 			switch(mc->buttons){

-			case 1: setofs(mc->xy.x - screen->r.min.x); break;

-			case 2: setloop(mc->xy.x - screen->r.min.x); break;

+			case 1: setjump(p2off(mc->xy.x - screen->r.min.x)); if(paused) update(0, 0); break;

+			case 2: setloop(p2off(mc->xy.x - screen->r.min.x)); if(paused) update(0, 0); break;

 			case 4: setpan(mo.xy.x - mc->xy.x); break;

 			case 8: setzoom(1, 1); break;

 			case 16: setzoom(-1, 1); break;