introduced NOBORDER macro to hide the nasty - 2 * c->bw in various calculations, moved tagset to config.def.h

config.def.h

@@ -16,6 +16,7 @@ static Bool readin                  = True;     /* False means do not read stdin
 
 /* tagging */
 static const char tags[][MAXTAGLEN] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
+static unsigned int tagset[] = {1, 1}; /* after start, first tag is selected */
 
 static Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating */

dwm.c

@@ -53,6 +53,7 @@
 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
 #define MAXTAGLEN               16
 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
+#define NOBORDER(x)             ((x) - 2 * c->bw)
 #define TAGMASK                 ((int)((1LL << LENGTH(tags)) - 1))
 #define TEXTW(x)                (textnw(x, strlen(x)) + dc.font.height)
 
@@ -227,7 +228,6 @@ static void (*handler[LASTEvent]) (XEvent *) = {
 static Atom wmatom[WMLast], netatom[NetLast];
 static Bool otherwm;
 static Bool running = True;
-static unsigned int tagset[] = {1, 1}; /* after start, first tag is selected */
 static Client *clients = NULL;
 static Client *sel = NULL;
 static Client *stack = NULL;
@@ -880,9 +880,9 @@ manage(Window w, XWindowAttributes *wa) {
 	}
 	else {
 		if(c->x + c->w + 2 * c->bw > sx + sw)
-			c->x = sx + sw - c->w - 2 * c->bw;
+			c->x = sx + sw - NOBORDER(c->w);
 		if(c->y + c->h + 2 * c->bw > sy + sh)
-			c->y = sy + sh - c->h - 2 * c->bw;
+			c->y = sy + sh - NOBORDER(c->h);
 		c->x = MAX(c->x, sx);
 		/* only fix client y-offset, if the client center might cover the bar */
 		c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
@@ -942,7 +942,7 @@ monocle(void) {
 	Client *c;
 
 	for(c = nexttiled(clients); c; c = nexttiled(c->next))
-		resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
+		resize(c, wx, wy, NOBORDER(ww), NOBORDER(wh), resizehints);
 }
 
 void
@@ -979,11 +979,11 @@ movemouse(const Arg *arg) {
 				if(abs(wx - nx) < snap)
 					nx = wx;
 				else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
-					nx = wx + ww - c->w - 2 * c->bw;
+					nx = wx + ww - NOBORDER(c->w);
 				if(abs(wy - ny) < snap)
 					ny = wy;
 				else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
-					ny = wy + wh - c->h - 2 * c->bw;
+					ny = wy + wh - NOBORDER(c->h);
 				if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
 					togglefloating(NULL);
 			}
@@ -1091,9 +1091,9 @@ resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
 	if(w <= 0 || h <= 0)
 		return;
 	if(x > sx + sw)
-		x = sw - w - 2 * c->bw;
+		x = sw - NOBORDER(w);
 	if(y > sy + sh)
-		y = sh - h - 2 * c->bw;
+		y = sh - NOBORDER(h);
 	if(x + w + 2 * c->bw < sx)
 		x = sx;
 	if(y + h + 2 * c->bw < sy)
@@ -1141,8 +1141,8 @@ resizemouse(const Arg *arg) {
 			break;
 		case MotionNotify:
 			XSync(dpy, False);
-			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
-			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+			nw = MAX(ev.xmotion.x - NOBORDER(ocx) + 1, 1);
+			nh = MAX(ev.xmotion.y - NOBORDER(ocy) + 1, 1);
 
 			if(snap && nw >= wx && nw <= wx + ww
 			        && nh >= wy && nh <= wy + wh) {
@@ -1430,7 +1430,7 @@ tile(void) {
 	/* master */
 	c = nexttiled(clients);
 	mw = mfact * ww;
-	resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
+	resize(c, wx, wy, NOBORDER(n == 1 ? ww : mw), NOBORDER(wh), resizehints);
 
 	if(--n == 0)
 		return;
@@ -1444,8 +1444,8 @@ tile(void) {
 		h = wh;
 
 	for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
-		resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
-		       ? (wy + wh) - y : h) - 2 * c->bw, resizehints);
+		resize(c, x, y, NOBORDER(w), /* remainder */ ((i + 1 == n)
+		       ? NOBORDER(wy + wh) - y : h), resizehints);
 		if(h != wh)
 			y = c->y + c->h + 2 * c->bw;
 	}