kolibrios/kernel/trunk/gui/font.inc

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align 4
dtext: ; Text String Output (rw by Johnny_B[john@kolibrios.org])
; eax x & y
; ebx font ( 0xX0000000 ) & color ( 0x00RRGGBB )
; ecx start of text
; edx length
; edi 1 force
pushad
mov esi,edx ;esi=length
mov ebp,ecx ;ebp=ptr to text
mov ecx,ebx ;ecx=color
movzx ebx,ax ;ebx=y
shr eax,16 ;eax=x
and esi, 0xFF ;limit of text = 255 symbols
dtext.lnew:
test esi, esi ; zero length ?
jnz @f
jmp dtext.output_end
@@:
movzx edx,byte [ebp] ;edx=ascii code
test edx,edx
jz dtext.output_end
test ecx,0x10000000
jnz dtext.letnew2
align 4
.letnew:
drawletter: ;output char of type 1(monotype)
;eax - x
;ebx - y
;ecx - color
;edx - ascii code
pushad
call [disable_mouse]
mov esi,9
lea ebp,[0x3F600+8*edx+edx]
.symloop:
push esi
mov dl,byte [ebp]
mov esi,8
.pixloop:
test dl,1
jz .nopix
call [putpixel]
.nopix:
shr dl,1
inc eax
dec esi
jnz .pixloop
sub eax,8
inc ebx
inc ebp
pop esi
dec esi
jnz .symloop
popad
add eax,6
inc ebp ;ptr to text
dec esi ;length
jnz dtext.lnew
jmp dtext.output_end
dtext.letnew2:
align 4
drawletter2: ;output char of type 2(proportional)
;eax - x
;ebx - y
;ecx - color
;edx - symbol
;edi - force?
;result - eax=eax+sym_size
pushad
call [disable_mouse]
shl edx,1
mov esi,9
lea ebp,[0x3EC00+4*edx+edx+1]
.symloop:
push esi
mov dl,byte [ebp]
xor esi,esi
.pixloop:
test dl,1
jz .nopix
call [putpixel]
.nopix:
shr dl,1
inc esi
inc eax
cmp esi,8
jl .pixloop
sub eax,8
inc ebx
pop esi
inc ebp
dec esi
jnz .symloop
movzx edx,byte [ebp-10]
add [esp+32-4],edx
popad
inc ebp ;ptr to text
dec esi ;length
jnz dtext.lnew
dtext.output_end:
popad
ret