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Function 15.9 - Redraws a rectangular part of the background

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git-svn-id: svn://kolibrios.org@2547 a494cfbc-eb01-0410-851d-a64ba20cac60
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Marat Zakiyanov (Mario79)
2012-04-02 22:30:24 +00:00
parent 56b95cf179
commit 60bd1cf7b6
3 changed files with 76 additions and 2 deletions
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46
kernel/trunk/kernel.asm
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@@ -2425,10 +2425,9 @@ sys_background:
cmp ebx, 1 ; BACKGROUND SIZE
jnz nosb1
test ecx, ecx
; cmp ecx,0
jz sbgrr
test edx, edx
; cmp edx,0
jz sbgrr
;--------------------------------------
align 4
@@ -2698,6 +2697,49 @@ nosb7:
;------------------------------------------------------------------------------
align 4
nosb8:
cmp ebx, 9
jnz nosb9
; ecx = [left]*65536 + [right]
; edx = [top]*65536 + [bottom]
mov eax, [Screen_Max_X]
mov ebx, [Screen_Max_Y]
; check [right]
cmp cx, ax
ja .exit
; check [left]
ror ecx, 16
cmp cx, ax
ja .exit
; check [bottom]
cmp dx, bx
ja .exit
; check [top]
ror edx, 16
cmp dx, bx
ja .exit
movzx eax, cx ; [left]
movzx ebx, dx ; [top]
shr ecx, 16 ; [right]
shr edx, 16 ; [bottom]
mov [background_defined], 1
mov [draw_data+32 + RECT.left], eax
mov [draw_data+32 + RECT.top], ebx
mov [draw_data+32 + RECT.right], ecx
mov [draw_data+32 + RECT.bottom], edx
inc byte[REDRAW_BACKGROUND]
;--------------------------------------
align 4
.exit:
ret
;------------------------------------------------------------------------------
align 4
nosb9:
ret
;------------------------------------------------------------------------------
align 4