void renderString(int x, int y, string glstring){
UnicodeChar c;
int uc;
int span = 0;
double wid = pow(2, ceil(log2(32 * stretch)));
wchar_t* wstr = nullptr;
MBToWC(glstring.c_str(), wstr, glstring.length()+128);
glEnable(GL_TEXTURE_2D);
for (unsigned int k = 0; k < wstrlen(wstr); k++) {
uc = wstr[k];
c = chars[uc];
if (uc == (int)'\n') {
UITrans(0, 20);
span = 0;
continue;
}
if (!c.aval) {
loadchar(uc);
c = chars[uc];
}
glBindTexture(GL_TEXTURE_2D, c.tex);
UITrans(x + 1 + span, y + 1);
glColor4f(0.5, 0.5, 0.5, a);
glBegin(GL_QUADS);
glTexCoord2d(0.0, 0.0);
UIVertex(c.xpos / stretch, 15 - c.ypos / stretch);
glTexCoord2d(c.width / wid, 0.0);
UIVertex(c.xpos / stretch + c.width / stretch, 15- c.ypos / stretch);
glTexCoord2d(c.width / wid, c.height / wid);
UIVertex(c.xpos / stretch + c.width / stretch, 15 + c.height / stretch - c.ypos / stretch);
glTexCoord2d(0.0, c.height / wid);
UIVertex(c.xpos / stretch, 15 + c.height / stretch - c.ypos / stretch);
glEnd();
UITrans(-1, -1);
glColor4f(r, g, b, a);
glBegin(GL_QUADS);
glTexCoord2d(0.0, 0.0);
UIVertex(c.xpos / stretch, 15 - c.ypos / stretch);
glTexCoord2d(c.width / wid, 0.0);
UIVertex(c.xpos / stretch + c.width / stretch, 15 - c.ypos / stretch);
glTexCoord2d(c.width / wid, c.height / wid);
UIVertex(c.xpos / stretch + c.width / stretch, 15 + c.height / stretch - c.ypos / stretch);
glTexCoord2d(0.0, c.height / wid);
UIVertex(c.xpos / stretch, 15 + c.height / stretch - c.ypos / stretch);
glEnd();
UITrans(-x - span, -y);
span += c.advance / stretch;
}
glColor4f(1.0, 1.0, 1.0, 1.0);
free(wstr);
}
int getStrWidth(string s){
UnicodeChar c;
int uc, res = 0;
wchar_t* wstr = nullptr;
MBToWC(s.c_str(), wstr, s.length()+128);
for (unsigned int k = 0; k < wstrlen(wstr); k++){
uc = wstr[k];
c = chars[uc];
if (!c.aval) {
loadchar(uc);
c = chars[uc];
}
res += c.advance / stretch;
}
free(wstr);
return res;
}
int
cachechars(Font *f, char **ss, Rune **rr, ushort *cp, int max, int *wp, char **subfontname)
{
int i, th, sh, h, ld, w, rw, wid, nc;
char *sp;
Rune r, *rp, vr;
ulong a;
Cacheinfo *c, *tc, *ec;
if(ss){
sp = *ss;
rp = L"";
}else{
sp = "";
rp = *rr;
}
wid = 0;
*subfontname = 0;
for(i=0; i<max && (*sp || *rp); sp+=w, rp+=rw){
if(ss){
r = *(uchar*)sp;
if(r < Runeself)
w = 1;
else{
w = chartorune(&vr, sp);
r = vr;
}
rw = 0;
}else{
r = *rp;
w = 0;
rw = 1;
}
sh = (17 * (uint)r) & (f->ncache-NFLOOK-1);
c = &f->cache[sh];
ec = c+NFLOOK;
h = sh;
while(c < ec){
if(c->value==r && c->age)
goto Found;
c++;
h++;
}
/*
* Not found; toss out oldest entry
*/
a = ~0;
th = sh;
tc = &f->cache[th];
while(tc < ec){
if(tc->age < a){
a = tc->age;
h = th;
c = tc;
}
tc++;
th++;
}
if(a && (f->age-a)<500){ /* kicking out too recent; resize */
nc = 2*(f->ncache-NFLOOK) + NFLOOK;
if(nc <= MAXFCACHE){
if(i == 0)
fontresize(f, f->width, nc, f->maxdepth);
/* else flush first; retry will resize */
break;
}
}
if(c->age == f->age) /* flush pending string output */
break;
ld = loadchar(f, r, c, h, i, subfontname);
if(ld <= 0){
if(ld == 0)
continue;
break;
}
c = &f->cache[h]; /* may have reallocated f->cache */
Found:
wid += c->width;
c->age = f->age;
cp[i] = h;
i++;
}
if(ss)
*ss = sp;
else
*rr = rp;
*wp = wid;
return i;
}