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libdraw: autoscale fonts when moving between low and high dpi screens

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Change-Id: I6093955b222db89dfe437fb723593b173d888d01
Reviewed-on: https://plan9port-review.googlesource.com/1170
Reviewed-by: Russ Cox <rsc@swtch.com>
This commit is contained in:
Russ Cox 2015-02-17 12:16:20 -05:00
parent 77f23268f7
commit 213fc4f6fb
9 changed files with 243 additions and 28 deletions
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19
src/libdraw/getsubfont.c
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@ -11,17 +11,20 @@ int _fontpipe(char*);
static void scalesubfont(Subfont*, int);
Subfont*
_getsubfont(Display *d, Font *ff, char *name)
_getsubfont(Display *d, char *name)
{
int fd;
Subfont *f;
fd = open(name, OREAD);
if(fd < 0 && strncmp(name, "/mnt/font/", 10) == 0)
fd = _fontpipe(name+10);
int scale;
char *fname;
scale = parsefontscale(name, &fname);
fd = open(fname, OREAD);
if(fd < 0 && strncmp(fname, "/mnt/font/", 10) == 0)
fd = _fontpipe(fname+10);
if(fd < 0){
fprint(2, "getsubfont: can't open %s: %r\n", name);
fprint(2, "getsubfont: can't open %s: %r\n", fname);
return 0;
}
/*
@ -38,8 +41,8 @@ _getsubfont(Display *d, Font *ff, char *name)
if(f == 0)
fprint(2, "getsubfont: can't read %s: %r\n", name);
close(fd);
if(ff->scale != 1 && ff->scale != 0)
scalesubfont(f, ff->scale);
if(scale > 1)
scalesubfont(f, scale);
return f;
}