1 b5990708 2003-09-30 devnull #include <u.h>
  2 b5990708 2003-09-30 devnull #include <libc.h>
  3 b5990708 2003-09-30 devnull #include <draw.h>
  4 b5990708 2003-09-30 devnull #include <mouse.h>
  5 b5990708 2003-09-30 devnull #include <frame.h>
  6 b5990708 2003-09-30 devnull 
  7 b5990708 2003-09-30 devnull int
  8 b5990708 2003-09-30 devnull _frcanfit(Frame *f, Point pt, Frbox *b)
  9 b5990708 2003-09-30 devnull {
 10 b5990708 2003-09-30 devnull 	int left, w, nr;
 11 b5990708 2003-09-30 devnull 	uchar *p;
 12 b5990708 2003-09-30 devnull 	Rune r;
 13 b5990708 2003-09-30 devnull 
 14 b5990708 2003-09-30 devnull 	left = f->r.max.x-pt.x;
 15 b5990708 2003-09-30 devnull 	if(b->nrune < 0)
 16 b5990708 2003-09-30 devnull 		return b->minwid <= left;
 17 b5990708 2003-09-30 devnull 	if(left >= b->wid)
 18 b5990708 2003-09-30 devnull 		return b->nrune;
 19 b5990708 2003-09-30 devnull 	for(nr=0,p=b->ptr; *p; p+=w,nr++){
 20 b5990708 2003-09-30 devnull 		r = *p;
 21 b5990708 2003-09-30 devnull 		if(r < Runeself)
 22 b5990708 2003-09-30 devnull 			w = 1;
 23 b5990708 2003-09-30 devnull 		else
 24 b5990708 2003-09-30 devnull 			w = chartorune(&r, (char*)p);
 25 b5990708 2003-09-30 devnull 		left -= stringnwidth(f->font, (char*)p, 1);
 26 b5990708 2003-09-30 devnull 		if(left < 0)
 27 b5990708 2003-09-30 devnull 			return nr;
 28 b5990708 2003-09-30 devnull 	}
 29 b5990708 2003-09-30 devnull 	drawerror(f->display, "_frcanfit can't");
 30 b5990708 2003-09-30 devnull 	return 0;
 31 b5990708 2003-09-30 devnull }
 32 b5990708 2003-09-30 devnull 
 33 b5990708 2003-09-30 devnull void
 34 b5990708 2003-09-30 devnull _frcklinewrap(Frame *f, Point *p, Frbox *b)
 35 b5990708 2003-09-30 devnull {
 36 b5990708 2003-09-30 devnull 	if((b->nrune<0? b->minwid : b->wid) > f->r.max.x-p->x){
 37 b5990708 2003-09-30 devnull 		p->x = f->r.min.x;
 38 b5990708 2003-09-30 devnull 		p->y += f->font->height;
 39 b5990708 2003-09-30 devnull 	}
 40 b5990708 2003-09-30 devnull }
 41 b5990708 2003-09-30 devnull 
 42 b5990708 2003-09-30 devnull void
 43 b5990708 2003-09-30 devnull _frcklinewrap0(Frame *f, Point *p, Frbox *b)
 44 b5990708 2003-09-30 devnull {
 45 b5990708 2003-09-30 devnull 	if(_frcanfit(f, *p, b) == 0){
 46 b5990708 2003-09-30 devnull 		p->x = f->r.min.x;
 47 b5990708 2003-09-30 devnull 		p->y += f->font->height;
 48 b5990708 2003-09-30 devnull 	}
 49 b5990708 2003-09-30 devnull }
 50 b5990708 2003-09-30 devnull 
 51 b5990708 2003-09-30 devnull void
 52 b5990708 2003-09-30 devnull _fradvance(Frame *f, Point *p, Frbox *b)
 53 b5990708 2003-09-30 devnull {
 54 b5990708 2003-09-30 devnull 	if(b->nrune<0 && b->bc=='\n'){
 55 b5990708 2003-09-30 devnull 		p->x = f->r.min.x;
 56 b5990708 2003-09-30 devnull 		p->y += f->font->height;
 57 b5990708 2003-09-30 devnull 	}else
 58 b5990708 2003-09-30 devnull 		p->x += b->wid;
 59 b5990708 2003-09-30 devnull }
 60 b5990708 2003-09-30 devnull 
 61 b5990708 2003-09-30 devnull int
 62 b5990708 2003-09-30 devnull _frnewwid(Frame *f, Point pt, Frbox *b)
 63 b5990708 2003-09-30 devnull {
 64 b5990708 2003-09-30 devnull 	b->wid = _frnewwid0(f, pt, b);
 65 b5990708 2003-09-30 devnull 	return b->wid;
 66 b5990708 2003-09-30 devnull }
 67 b5990708 2003-09-30 devnull 
 68 b5990708 2003-09-30 devnull int
 69 b5990708 2003-09-30 devnull _frnewwid0(Frame *f, Point pt, Frbox *b)
 70 b5990708 2003-09-30 devnull {
 71 b5990708 2003-09-30 devnull 	int c, x;
 72 b5990708 2003-09-30 devnull 
 73 b5990708 2003-09-30 devnull 	c = f->r.max.x;
 74 b5990708 2003-09-30 devnull 	x = pt.x;
 75 b5990708 2003-09-30 devnull 	if(b->nrune>=0 || b->bc!='\t')
 76 b5990708 2003-09-30 devnull 		return b->wid;
 77 b5990708 2003-09-30 devnull 	if(x+b->minwid > c)
 78 b5990708 2003-09-30 devnull 		x = pt.x = f->r.min.x;
 79 b5990708 2003-09-30 devnull 	x += f->maxtab;
 80 b5990708 2003-09-30 devnull 	x -= (x-f->r.min.x)%f->maxtab;
 81 b5990708 2003-09-30 devnull 	if(x-pt.x<b->minwid || x>c)
 82 b5990708 2003-09-30 devnull 		x = pt.x+b->minwid;
 83 b5990708 2003-09-30 devnull 	return x-pt.x;
 84 b5990708 2003-09-30 devnull }
 85 b5990708 2003-09-30 devnull 
 86 b5990708 2003-09-30 devnull void
 87 b5990708 2003-09-30 devnull _frclean(Frame *f, Point pt, int n0, int n1)	/* look for mergeable boxes */
 88 b5990708 2003-09-30 devnull {
 89 b5990708 2003-09-30 devnull 	Frbox *b;
 90 b5990708 2003-09-30 devnull 	int nb, c;
 91 b5990708 2003-09-30 devnull 
 92 b5990708 2003-09-30 devnull 	c = f->r.max.x;
 93 b5990708 2003-09-30 devnull 	for(nb=n0; nb<n1-1; nb++){
 94 b5990708 2003-09-30 devnull 		b = &f->box[nb];
 95 b5990708 2003-09-30 devnull 		_frcklinewrap(f, &pt, b);
 96 b5990708 2003-09-30 devnull 		while(b[0].nrune>=0 && nb<n1-1 && b[1].nrune>=0 && pt.x+b[0].wid+b[1].wid<c){
 97 b5990708 2003-09-30 devnull 			_frmergebox(f, nb);
 98 b5990708 2003-09-30 devnull 			n1--;
 99 b5990708 2003-09-30 devnull 			b = &f->box[nb];
100 b5990708 2003-09-30 devnull 		}
101 b5990708 2003-09-30 devnull 		_fradvance(f, &pt, &f->box[nb]);
102 b5990708 2003-09-30 devnull 	}
103 b5990708 2003-09-30 devnull 	for(; nb<f->nbox; nb++){
104 b5990708 2003-09-30 devnull 		b = &f->box[nb];
105 b5990708 2003-09-30 devnull 		_frcklinewrap(f, &pt, b);
106 b5990708 2003-09-30 devnull 		_fradvance(f, &pt, &f->box[nb]);
107 b5990708 2003-09-30 devnull 	}
108 b5990708 2003-09-30 devnull 	f->lastlinefull = 0;
109 b5990708 2003-09-30 devnull 	if(pt.y >= f->r.max.y)
110 b5990708 2003-09-30 devnull 		f->lastlinefull = 1;
111 b5990708 2003-09-30 devnull }