grid.c

   1 static void grid(void)
   2 {
   3         unsigned int i, n, nx, ny, nw, nh, aw, ah, cols, rows;
   4         Client *c;
   5
   6         for (n = 0, c = nextvisible(clients); c; c = nextvisible(c->next))
   7                 if (!c->minimized)
   8                         n++;
   9         /* grid dimensions */
  10         for (cols = 0; cols <= n / 2; cols++)
  11                 if (cols * cols >= n)
  12                         break;
  13         rows = (cols && (cols - 1) * cols >= n) ? cols - 1 : cols;
  14         /* window geoms (cell height/width) */
  15         nh = wah / (rows ? rows : 1);
  16         nw = waw / (cols ? cols : 1);
  17         for (i = 0, c = nextvisible(clients); c; c = nextvisible(c->next)) {
  18                 if (c->minimized)
  19                         continue;
  20                 /* if there are less clients in the last row than normal adjust the
  21                  * split rate to fill the empty space */
  22                 if (rows > 1 && i == (rows * cols) - cols && (n - i) <= (n % cols))
  23                         nw = waw / (n - i);
  24                 nx = (i % cols) * nw + wax;
  25                 ny = (i / cols) * nh + way;
  26                 /* adjust height/width of last row/column's windows */
  27                 ah = (i >= cols * (rows - 1)) ? wah - nh * rows : 0;
  28                 /* special case if there are less clients in the last row */
  29                 if (rows > 1 && i == n - 1 && (n - i) < (n % cols))
  30                         /* (n % cols) == number of clients in the last row */
  31                         aw = waw - nw * (n % cols);
  32                 else
  33                         aw = ((i + 1) % cols == 0) ? waw - nw * cols : 0;
  34                 if (i % cols) {
  35                         mvvline(ny, nx, ACS_VLINE, nh + ah);
  36                         /* if we are on the first row, or on the last one and there are fewer clients
  37                          * than normal whose border does not match the line above, print a top tree char
  38                          * otherwise a plus sign. */
  39                         if (i <= cols
  40                             || (i >= rows * cols - cols && n % cols
  41                                 && (cols - (n % cols)) % 2))
  42                                 mvaddch(ny, nx, ACS_TTEE);
  43                         else
  44                                 mvaddch(ny, nx, ACS_PLUS);
  45                         nx++, aw--;
  46                 }
  47                 resize(c, nx, ny, nw + aw, nh + ah);
  48                 i++;
  49         }
  50 }