kolibrios/kernel/trunk/gui/font.inc

align 4
dtext:
        ; eax x & y
        ; ebx font ( 0xX0000000 ) & color ( 0x00RRGGBB )
        ; ecx start of text
        ; edx length
        ; edi 1 force

        test   ebx,0x10000000
        jnz    dtext2

        pushad

        mov    esi, edx
        and    esi, 0xff
        test   esi, esi    ; zero length ?
        jnz    @f
        popad
        ret
      @@:
        align 4
      .letnew:

        push   eax ecx edx
        movzx  ebx,ax
        shr    eax,16
        movzx  edx,byte [ecx]
        mov    ecx,[esp+3*4+32-16]
        call   drawletter
        pop    edx ecx eax

        add    eax,6*65536

        inc    ecx
        dec    edx
        jnz    .letnew

        popad
        ret

align 4
drawletter:
;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
    ret  
        


dtext2:

        ; eax x & y
        ; ebx color
        ; ecx start of text
        ; edx length
        ; edi 1 force

        pushad

        mov    esi,edx
        and    esi,0xff
        test   esi,esi    ; zero length ?
        jnz    @f
        popad
        ret
      @@:

      align 4
      letnew2:

        push   ecx
        push   edx
        movzx  ebx,ax
        shr    eax,16
        movzx  edx,byte [ecx]
        mov    ecx,[esp+2*4+32-16]
        call   drawletter2
        shl    eax,16
        add    eax,ebx
        pop    edx
        pop    ecx

        inc    ecx
        dec    edx
        jnz    letnew2

        popad
        ret

align 4
drawletter2:
;eax - x
;ebx - y
;ecx - color
;edx - symbol
;edi - force?
;result - eax=eax+sym_size
    pushad
    call  [disable_mouse]
    mov   esi,9
    lea   ebp,[0x3EC00+8*edx+edx]
    push  dword -1 ;size
.symloop:
    push  esi
    mov   dl,byte [ebp]
    xor   esi,esi
.pixloop:
    test  dl,1
    jz    .nopix
    cmp   [esp+4],esi
    jge   .no_inc
    mov   [esp+4],esi
.no_inc:
    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
    pop   edx
    test  edx,edx
    jge   .nospace
    mov   edx,4
.nospace:
    add   edx,2
    add   [esp+32-4],edx
    popad
    ret