implemented ratio tile as described on the mailinglist

[dwm.git] / layout.c

diff --git a/layout.c b/layout.c
index f8c92ee..eeeb628 100644 (file)
--- a/layout.c
+++ b/layout.c
@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include "dwm.h"
+#include <stdio.h>
 #include <stdlib.h>
 
 unsigned int blw = 0;
@@ -7,53 +8,79 @@ Layout *lt = NULL;
 
 /* static */
 
+static double ratio = RATIO;
 static unsigned int nlayouts = 0;
-static unsigned int masterw = MASTERWIDTH;
 static unsigned int nmaster = NMASTER;
 
+static double // simple pow()
+spow(double x, double y)
+{
+       if(y == 0)
+               return 1;
+       while(--y)
+               x *= x;
+       return x;
+}
+
 static void
 tile(void) {
-       unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;
+       double mscale = 0, tscale = 0, sum = 0;
+       unsigned int i, n, nx, ny, nw, nh, mw, tw;
        Client *c;
 
        for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
                n++;
-       /* window geoms */
-       mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
-       mw = (n > nmaster) ? (waw * masterw) / 1000 : waw;
-       th = (n > nmaster) ? wah / (n - nmaster) : 0;
+
+       mw = (n <= nmaster) ? waw :  waw / (1 + ratio);
        tw = waw - mw;
 
+       if(n > 0) {
+               if(n < nmaster) {
+                       for(i = 0; i < n; i++)
+                               sum += spow(ratio, i);
+                       mscale = wah / sum;
+               }
+               else {
+                       for(i = 0; i < nmaster; i++)
+                               sum += spow(ratio, i);
+                       mscale = wah / sum;
+                       for(sum = 0, i = 0; i < (n - nmaster); i++)
+                               sum += spow(ratio, i);
+                       tscale = wah / sum;
+               }
+       }
+       nx = wax;
+       ny = way;
        for(i = 0, c = clients; c; c = c->next)
                if(isvisible(c)) {
                        unban(c);
                        if(c->isfloating)
                                continue;
                        c->ismax = False;
-                       nx = wax;
-                       ny = way;
-                       if(i < nmaster) {
-                               ny += i * mh;
+                       if(i < nmaster) { /* master window */
                                nw = mw - 2 * c->border;
-                               nh = mh;
-                               if(i + 1 == (n < nmaster ? n : nmaster)) /* remainder */
-                                       nh = wah - mh * i;
-                               nh -= 2 * c->border;
+                               if(i + 1 == n || i + 1 == nmaster)
+                                       nh = (way + wah) - ny - (2 * c->border);
+                               else
+                                       nh = (mscale * spow(ratio, i)) - (2 * c->border);
                        }
-                       else {  /* tile window */
-                               nx += mw;
-                               nw = tw - 2 * c->border;
-                               if(th > 2 * c->border) {
-                                       ny += (i - nmaster) * th;
-                                       nh = th;
-                                       if(i + 1 == n) /* remainder */
-                                               nh = wah - th * (i - nmaster);
-                                       nh -= 2 * c->border;
+                       else { /* tile window */
+                               if(i == nmaster) {
+                                       ny = way;
+                                       nx = wax + mw;
                                }
-                               else /* fallback if th <= 2 * c->border */
-                                       nh = wah - 2 * c->border;
+                               nw = tw - 2 * c->border;
+                               if(i + 1 == n)
+                                       nh = (way + wah) - ny - (2 * c->border);
+                               else
+                                       nh = (tscale * spow(ratio, i - nmaster)) - (2 * c->border);
+                       }
+                       if(nh < bh) {
+                               nh = bh;
+                               ny = way + wah - nh;
                        }
                        resize(c, nx, ny, nw, nh, False);
+                       ny += nh;
                        i++;
                }
                else
@@ -106,18 +133,19 @@ focusclient(const char *arg) {
 }
 
 void
-incmasterw(const char *arg) {
-       int i;
+incratio(const char *arg) {
+       double delta;
+
        if(lt->arrange != tile)
                return;
        if(!arg)
-               masterw = MASTERWIDTH;
+               ratio = RATIO;
        else {
-               i = atoi(arg);
-               if(waw * (masterw + i) / 1000 >= waw - 2 * BORDERPX 
-               || waw * (masterw + i) / 1000 <= 2 * BORDERPX)
-                       return;
-               masterw += i;
+               if(1 == sscanf(arg, "%lf", &delta)) {
+                       if(delta + ratio < .1 || delta + ratio > 1.9)
+                               return;
+                       ratio += delta;
+               }
        }
        lt->arrange();
 }