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fontsrv: use 64 chars per subfont instead of 256

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Makes loading faster, and makes larger sizes not too wide.

Change-Id: I076c83fdb9577c1e596de45558f38ea93e3a2a31
Reviewed-on: https://plan9port-review.googlesource.com/1360
Reviewed-by: Russ Cox <rsc@swtch.com>
This commit is contained in:
Russ Cox 2015-07-03 10:57:42 -04:00
parent a78b1841be
commit 775cb933ec
4 changed files with 14 additions and 9 deletions
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7
src/cmd/fontsrv/a.h
View file

@ -2,11 +2,16 @@ typedef struct XFont XFont;
XFont *xfont;
int nxfont;
enum {
SubfontSize = 32,
SubfontMask = (1<<16)/SubfontSize - 1,
};
struct XFont
{
char *name;
int loaded;
uchar range[256]; // range[i] == whether to have subfont i<<8 to (i+1)<<8.
uchar range[(1<<16)/SubfontSize]; // range[i] == whether to have subfont i*SubfontSize to (i+1)*SubfontSize - 1.
int nrange;
int unit;
double height;

12
src/cmd/fontsrv/main.c
View file

@ -54,7 +54,7 @@ enum
#define QFONT(p) (((p) >> 4) & 0xFFFF)
#define QSIZE(p) (((p) >> 20) & 0xFF)
#define QANTIALIAS(p) (((p) >> 28) & 0x1)
#define QRANGE(p) (((p) >> 29) & 0xFF)
#define QRANGE(p) (((p) >> 29) & SubfontMask)
static int sizes[] = { 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 28 };
static vlong
@ -109,7 +109,7 @@ dostat(vlong path, Qid *qid, Dir *dir)
break;
case Qsubfontfile:
snprint(buf, sizeof buf, "x%02llx00.bit", QRANGE(path));
snprint(buf, sizeof buf, "x%04x.bit", (int)QRANGE(path)*SubfontSize);
name = buf;
break;
}
@ -191,9 +191,9 @@ xwalk1(Fid *fid, char *name, Qid *qid)
goto NotFound;
p++;
n = strtoul(p, &p, 16);
if(p != name+5 || (n&0xFF) != 0 || strcmp(p, ".bit") != 0 || !f->range[(n>>8) & 0xFF])
if(p != name+5 || n%SubfontSize != 0 || strcmp(p, ".bit") != 0 || !f->range[(n/SubfontSize) & SubfontMask])
goto NotFound;
path += Qsubfontfile - Qsizedir + qpath(0, 0, 0, 0, (n>>8) & 0xFF);
path += Qsubfontfile - Qsizedir + qpath(0, 0, 0, 0, (n/SubfontSize) & SubfontMask);
break;
}
Found:
@ -329,7 +329,7 @@ xread(Req *r)
for(i=0; i<nelem(f->range); i++) {
if(f->range[i] == 0)
continue;
fmtprint(&fmt, "0x%04x 0x%04x x%04x.bit\n", i<<8, (i<<8) + 0xFF, i<<8);
fmtprint(&fmt, "0x%04x 0x%04x x%04x.bit\n", i*SubfontSize, ((i+1)*SubfontSize) - 1, i*SubfontSize);
}
data = fmtstrflush(&fmt);
readstr(r, data);
@ -339,7 +339,7 @@ xread(Req *r)
f = &xfont[QFONT(path)];
load(f);
if(r->fid->aux == nil) {
r->fid->aux = mksubfont(f, f->name, QRANGE(path)<<8, (QRANGE(path)<<8)+0xFF, QSIZE(path), QANTIALIAS(path));
r->fid->aux = mksubfont(f, f->name, QRANGE(path)*SubfontSize, ((QRANGE(path)+1)*SubfontSize)-1, QSIZE(path), QANTIALIAS(path));
if(r->fid->aux == nil) {
responderrstr(r);
return;

2
src/cmd/fontsrv/x11.c
View file

@ -86,7 +86,7 @@ load(XFont *f)
for(charcode=FT_Get_First_Char(face, &glyph_index); glyph_index != 0;
charcode=FT_Get_Next_Char(face, charcode, &glyph_index)) {
int idx = charcode>>8;
int idx = charcode/SubfontSize;
if(charcode > 0xffff)
break;