void TtfFontList::LoadAll() {
if(loaded) return;
for(const std::string &font : GetFontFiles()) {
TtfFont tf = {};
tf.fontFile = font;
if(tf.LoadFromFile(fontLibrary))
l.Add(&tf);
}
// Sort fonts according to their actual name, not filename.
std::sort(&l.elem[0], &l.elem[l.n],
[](const TtfFont &a, const TtfFont &b) { return a.name < b.name; });
// Filter out fonts with the same family and style name. This is not
// strictly necessarily the exact same font, but it will almost always be.
TtfFont *it = std::unique(&l.elem[0], &l.elem[l.n],
[](const TtfFont &a, const TtfFont &b) { return a.name == b.name; });
l.RemoveLast(&l.elem[l.n] - it);
// TODO: identify fonts by their name and not filename, which may change
// between OSes.
loaded = true;
}
void TtfFontList::PlotString(const std::string &font, const std::string &str,
SBezierList *sbl, Vector origin, Vector u, Vector v)
{
LoadAll();
TtfFont *tf = std::find_if(&l.elem[0], &l.elem[l.n],
[&](const TtfFont &tf) { return tf.FontFileBaseName() == font; });
if(!str.empty() && tf != &l.elem[l.n]) {
tf->LoadFromFile(fontLibrary, /*nameOnly=*/false);
tf->PlotString(str, sbl, origin, u, v);
} else {
// No text or no font; so draw a big X for an error marker.
SBezier sb;
sb = SBezier::From(origin, origin.Plus(u).Plus(v));
sbl->l.Add(&sb);
sb = SBezier::From(origin.Plus(v), origin.Plus(u));
sbl->l.Add(&sb);
}
}