void TextOnPath(Painter& sw)
{
Font fnt = Roman(100);
FontInfo fi = fnt.Info();
double pos = 0;
const char *s = "Hello world, this is text on path!";
int l = GetTextSize(s, fnt).cx;
double r = l / (2 * M_PI);
sw.Circle(300, 300, r).Stroke(1, Red());
while(*s) {
double w = fi[*s];
sw.BeginOnPath(pos + w / 2, true);
sw.Character(-w / 2, -fi.GetAscent(), *s++, fnt)
.Fill(0, -fi.GetAscent(), Yellow(), 0, fi.GetDescent(), Blue())
.Stroke(1, Black());
sw.End();
pos += w;
}
}
bool Paragraph::Format(ParaTypo& pfmt, int cx, int zoom) const {
int len = length + !!style.indent;
Buffer<char> chr(len);
Buffer<int> width(len);
Buffer<ParaTypo::Part *> info(len);
Buffer<ParaTypo::Part> pinfo(part.GetCount() + !!style.indent);
const Part *pptr = part.Begin();
const Part *plim = part.End();
ParaTypo::Part *pp = pinfo;
char *cp = chr;
int *wp = width;
ParaTypo::Part **ip = info;
if(!IsNull(parafont)) {
Font pf = parafont;
// pf.Height(max(1, DocZoom(zoom, parafont.GetHeight())));
int n = DocZoom(zoom, parafont.GetHeight());
pf.Height(n ? n : 1);
FontInfo f = pf.Info();
pfmt.SetMin(f.GetAscent(), f.GetDescent(), f.GetExternal());
}
/* if(!IsNull(parafont)) {
FontInfo f = w.GetFontInfo(parafont);
pfmt.SetMin(DocZoom(zoom, f.GetAscent()),
DocZoom(zoom, f.GetDescent()),
DocZoom(zoom, f.GetExternal()));
}
*/ if(style.indent) {
static Part dummy;
*cp++ = ' ';
*wp++ = DocZoom(zoom, style.indent);
pp->Set(Arial(0), Black);
pp->voidptr = &dummy;
*ip++ = pp;
pp++;
}
while(pptr != plim) {
if(pptr->pr) {
*cp++ = '@';
Size sz = pptr->pr.GetStdSize();
*wp++ = pp->width = pptr->pr && !pptr->sz.cx ? sz.cx : DocZoom(zoom, pptr->sz.cx);
*ip++ = pp;
pp->ascent = minmax(pptr->pr && !pptr->sz.cy ? sz.cy : DocZoom(zoom, pptr->sz.cy), 0, 1000);
pp->descent = 0;
pp->external = pp->overhang = 0;
pp->color = pptr->color;
}
else {
Font font = pptr->font;
font.Height(DocZoom(zoom, pptr->font.GetHeight()));
FontInfo pf = pp->Set(font, pptr->color);
const char *s = pptr->text;
int n = pptr->text.GetLength();
while(n--) {
*cp++ = *s;
*wp++ = pf[*s == 31 ? 32 : ToUnicode((byte) *s, CHARSET_DEFAULT)];
*ip++ = pp;
s++;
}
}
pp->voidptr = (void *)pptr;
pp++;
pptr++;
}
return pfmt.Format(style.align, len, chr, width, info, cx);
}
