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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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Point
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stringsubfont(Image *b, Point p, Image *color, Subfont *f, char *cs)
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{
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	int w, width;
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	uchar *s;
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	Rune c;
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	Fontchar *i;
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	s = (uchar*)cs;
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	for(; c=*s; p.x+=width){
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		width = 0;
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		if(c < Runeself)
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			s++;
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		else{
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			w = chartorune(&c, (char*)s);
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			if(w == 0){
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				s++;
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				continue;
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			}
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			s += w;
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		}
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		if(c >= f->n)
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			continue;
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		i = f->info+c;
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		width = i->width;
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		draw(b, Rect(p.x+i->left, p.y+i->top, p.x+i->left+(i[1].x-i[0].x), p.y+i->bottom),
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			color, f->bits, Pt(i->x, i->top));
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	}
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	return p;
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}
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Point
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strsubfontwidth(Subfont *f, char *cs)
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{
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	Rune c;
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	Point p;
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	uchar *s;
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	Fontchar *i;
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	int w, width;
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	p = Pt(0, f->height);
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	s = (uchar*)cs;
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	for(; c=*s; p.x+=width){
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		width = 0;
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		if(c < Runeself)
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			s++;
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		else{
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			w = chartorune(&c, (char*)s);
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			if(w == 0){
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				s++;
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				continue;
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			}
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			s += w;
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		}
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		if(c >= f->n)
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			continue;
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		i = f->info+c;
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		width = i->width;
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	}
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	return p;
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}