1*8ccd4a63SDavid du Colombier #include <u.h> 2*8ccd4a63SDavid du Colombier #include <libc.h> 3*8ccd4a63SDavid du Colombier #include <draw.h> 4*8ccd4a63SDavid du Colombier #include <memdraw.h> 57dd7cddfSDavid du Colombier 67dd7cddfSDavid du Colombier Memsubfont* 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; 15*8ccd4a63SDavid 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; 247dd7cddfSDavid du Colombier n = (ulong)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 35*8ccd4a63SDavid du Colombier md = mallocz(sizeof(Memdata), 1); 36*8ccd4a63SDavid du Colombier if(md == nil) 377dd7cddfSDavid du Colombier return nil; 387dd7cddfSDavid du Colombier 39*8ccd4a63SDavid du Colombier p += 5*12; 40*8ccd4a63SDavid du Colombier 41*8ccd4a63SDavid du Colombier md->base = nil; /* so freememimage doesn't free p */ 42*8ccd4a63SDavid du Colombier md->bdata = (uchar*)p; /* ick */ 43*8ccd4a63SDavid du Colombier md->ref = 1; 44*8ccd4a63SDavid du Colombier md->allocd = 1; /* so freememimage does free md */ 45*8ccd4a63SDavid du Colombier 46*8ccd4a63SDavid du Colombier i = allocmemimaged(r, drawld2chan[ld], md, nil); 47*8ccd4a63SDavid du Colombier if(i == nil){ 48*8ccd4a63SDavid du Colombier free(md); 49*8ccd4a63SDavid du Colombier return nil; 50*8ccd4a63SDavid 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 } 69