plan9port

[fork] Plan 9 from user space
git clone git://src.adamsgaard.dk/plan9port # fast
git clone https://src.adamsgaard.dk/plan9port.git # slow
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boxgen.c (2261B)


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