sys/src/cmd/pic/boxgen.c

   1 #include        <stdio.h>
   2 #include        "pic.h"
   3 #include        "y.tab.h"
   4
   5 obj *boxgen(void)
   6 {
   7         static double prevh = HT;
   8         static double prevw = WID;      /* golden mean, sort of */
   9         int i, at, battr, with;
  10         double ddval, fillval, xwith, ywith;
  11         double h, w, x0, y0, x1, y1;
  12         obj *p, *ppos;
  13         Attr *ap;
  14
  15         h = getfval("boxht");
  16         w = getfval("boxwid");
  17         at = battr = with = 0;
  18         ddval = fillval = xwith = ywith = 0;
  19         for (i = 0; i < nattr; i++) {
  20                 ap = &attr[i];
  21                 switch (ap->a_type) {
  22                 case HEIGHT:
  23                         h = ap->a_val.f;
  24                         break;
  25                 case WIDTH:
  26                         w = ap->a_val.f;
  27                         break;
  28                 case SAME:
  29                         h = prevh;
  30                         w = prevw;
  31                         break;
  32                 case WITH:
  33                         with = ap->a_val.i;     /* corner */
  34                         break;
  35                 case AT:
  36                         ppos = ap->a_val.o;
  37                         curx = ppos->o_x;
  38                         cury = ppos->o_y;
  39                         at++;
  40                         break;
  41                 case INVIS:
  42                         battr |= INVIS;
  43                         break;
  44                 case NOEDGE:
  45                         battr |= NOEDGEBIT;
  46                         break;
  47                 case DOT:
  48                 case DASH:
  49                         battr |= ap->a_type==DOT ? DOTBIT : DASHBIT;
  50                         if (ap->a_sub == DEFAULT)
  51                                 ddval = getfval("dashwid");
  52                         else
  53                                 ddval = ap->a_val.f;
  54                         break;
  55                 case FILL:
  56                         battr |= FILLBIT;
  57                         if (ap->a_sub == DEFAULT)
  58                                 fillval = getfval("fillval");
  59                         else
  60                                 fillval = ap->a_val.f;
  61                         break;
  62                 case TEXTATTR:
  63                         savetext(ap->a_sub, ap->a_val.p);
  64                         break;
  65                 }
  66         }
  67         if (with) {
  68                 switch (with) {
  69                 case NORTH:     ywith = -h / 2; break;
  70                 case SOUTH:     ywith = h / 2; break;
  71                 case EAST:      xwith = -w / 2; break;
  72                 case WEST:      xwith = w / 2; break;
  73                 case NE:        xwith = -w / 2; ywith = -h / 2; break;
  74                 case SE:        xwith = -w / 2; ywith = h / 2; break;
  75                 case NW:        xwith = w / 2; ywith = -h / 2; break;
  76                 case SW:        xwith = w / 2; ywith = h / 2; break;
  77                 }
  78                 curx += xwith;
  79                 cury += ywith;
  80         }
  81         if (!at) {
  82                 if (isright(hvmode))
  83                         curx += w / 2;
  84                 else if (isleft(hvmode))
  85                         curx -= w / 2;
  86                 else if (isup(hvmode))
  87                         cury += h / 2;
  88                 else
  89                         cury -= h / 2;
  90         }
  91         x0 = curx - w / 2;
  92         y0 = cury - h / 2;
  93         x1 = curx + w / 2;
  94         y1 = cury + h / 2;
  95         extreme(x0, y0);
  96         extreme(x1, y1);
  97         p = makenode(BOX, 2);
  98         p->o_val[0] = w;
  99         p->o_val[1] = h;
 100         p->o_attr = battr;
 101         p->o_ddval = ddval;
 102         p->o_fillval = fillval;
 103         dprintf("B %g %g %g %g at %g %g, h=%g, w=%g\n", x0, y0, x1, y1, curx, cury, h, w);
 104         if (isright(hvmode))
 105                 curx = x1;
 106         else if (isleft(hvmode))
 107                 curx = x0;
 108         else if (isup(hvmode))
 109                 cury = y1;
 110         else
 111                 cury = y0;
 112         prevh = h;
 113         prevw = w;
 114         return(p);
 115 }