18ccd4a63SDavid du Colombier #include <u.h>
28ccd4a63SDavid du Colombier #include <libc.h>
38ccd4a63SDavid du Colombier #include <draw.h>
48ccd4a63SDavid du Colombier #include <memdraw.h>
57dd7cddfSDavid du Colombier
67dd7cddfSDavid du Colombier Memsubfont*
getmemdefont(void)77dd7cddfSDavid du Colombier getmemdefont(void)
87dd7cddfSDavid du Colombier {
97dd7cddfSDavid du Colombier char *hdr, *p;
107dd7cddfSDavid du Colombier int n;
117dd7cddfSDavid du Colombier Fontchar *fc;
127dd7cddfSDavid du Colombier Memsubfont *f;
137dd7cddfSDavid du Colombier int ld;
147dd7cddfSDavid du Colombier Rectangle r;
158ccd4a63SDavid du Colombier Memdata *md;
167dd7cddfSDavid du Colombier Memimage *i;
177dd7cddfSDavid du Colombier
187dd7cddfSDavid du Colombier /*
197dd7cddfSDavid du Colombier * make sure data is word-aligned. this is true with Plan 9 compilers
207dd7cddfSDavid du Colombier * but not in general. the byte order is right because the data is
217dd7cddfSDavid du Colombier * declared as char*, not ulong*.
227dd7cddfSDavid du Colombier */
237dd7cddfSDavid du Colombier p = (char*)defontdata;
24*ec59a3ddSDavid du Colombier n = (uintptr)p & 3;
257dd7cddfSDavid du Colombier if(n != 0){
267dd7cddfSDavid du Colombier memmove(p+(4-n), p, sizeofdefont-n);
277dd7cddfSDavid du Colombier p += 4-n;
287dd7cddfSDavid du Colombier }
297dd7cddfSDavid du Colombier ld = atoi(p+0*12);
307dd7cddfSDavid du Colombier r.min.x = atoi(p+1*12);
317dd7cddfSDavid du Colombier r.min.y = atoi(p+2*12);
327dd7cddfSDavid du Colombier r.max.x = atoi(p+3*12);
337dd7cddfSDavid du Colombier r.max.y = atoi(p+4*12);
347dd7cddfSDavid du Colombier
358ccd4a63SDavid du Colombier md = mallocz(sizeof(Memdata), 1);
368ccd4a63SDavid du Colombier if(md == nil)
377dd7cddfSDavid du Colombier return nil;
387dd7cddfSDavid du Colombier
398ccd4a63SDavid du Colombier p += 5*12;
408ccd4a63SDavid du Colombier
418ccd4a63SDavid du Colombier md->base = nil; /* so freememimage doesn't free p */
428ccd4a63SDavid du Colombier md->bdata = (uchar*)p; /* ick */
438ccd4a63SDavid du Colombier md->ref = 1;
448ccd4a63SDavid du Colombier md->allocd = 1; /* so freememimage does free md */
458ccd4a63SDavid du Colombier
468ccd4a63SDavid du Colombier i = allocmemimaged(r, drawld2chan[ld], md, nil);
478ccd4a63SDavid du Colombier if(i == nil){
488ccd4a63SDavid du Colombier free(md);
498ccd4a63SDavid du Colombier return nil;
508ccd4a63SDavid du Colombier }
517dd7cddfSDavid du Colombier
527dd7cddfSDavid du Colombier hdr = p+Dy(r)*i->width*sizeof(ulong);
537dd7cddfSDavid du Colombier n = atoi(hdr);
547dd7cddfSDavid du Colombier p = hdr+3*12;
557dd7cddfSDavid du Colombier fc = malloc(sizeof(Fontchar)*(n+1));
567dd7cddfSDavid du Colombier if(fc == 0){
577dd7cddfSDavid du Colombier freememimage(i);
587dd7cddfSDavid du Colombier return 0;
597dd7cddfSDavid du Colombier }
607dd7cddfSDavid du Colombier _unpackinfo(fc, (uchar*)p, n);
617dd7cddfSDavid du Colombier f = allocmemsubfont("*default*", n, atoi(hdr+12), atoi(hdr+24), fc, i);
627dd7cddfSDavid du Colombier if(f == 0){
637dd7cddfSDavid du Colombier freememimage(i);
647dd7cddfSDavid du Colombier free(fc);
657dd7cddfSDavid du Colombier return 0;
667dd7cddfSDavid du Colombier }
677dd7cddfSDavid du Colombier return f;
687dd7cddfSDavid du Colombier }
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