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fix calculation of draw_limits

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git-svn-id: svn://kolibrios.org@1550 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond) 2010-08-01 23:15:10 +00:00
parent 15a6f2fd99
commit 0f036b69ff
1 changed files with 15 additions and 12 deletions
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27
kernel/trunk/gui/window.inc
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@ -1223,30 +1223,33 @@ window._.invalidate_screen: ;//////////////////////////////////////////////////
push eax ebx
; TODO: do we really need `draw_limits`?
; Yes, they are used by background drawing code.
mov ecx, [eax + BOX.left]
mov edx, [ebx + BOX.left]
cmp ecx, edx
jle @f
xchg ecx, edx
mov ecx, edx
@@: mov [draw_limits.left], ecx
mov ecx, [eax + BOX.width]
cmp ecx, [ebx + BOX.width]
mov ecx, [eax + BOX.left]
add ecx, [eax + BOX.width]
add edx, [ebx + BOX.width]
cmp ecx, edx
jae @f
mov ecx, [ebx + BOX.width]
@@: add ecx, edx
mov [draw_limits.right], ecx
mov ecx, edx
@@: mov [draw_limits.right], ecx
mov ecx, [eax + BOX.top]
mov edx, [ebx + BOX.top]
cmp ecx, edx
jle @f
xchg ecx, edx
mov ecx, edx
@@: mov [draw_limits.top], ecx
mov ecx, [eax + BOX.height]
cmp ecx, [ebx + BOX.height]
mov ecx, [eax + BOX.top]
add ecx, [eax + BOX.height]
add edx, [ebx + BOX.height]
cmp ecx, edx
jae @f
mov ecx, [ebx + BOX.height]
@@: add ecx, edx
mov [draw_limits.bottom], ecx
mov ecx, edx
@@: mov [draw_limits.bottom], ecx
; recalculate screen buffer at old position
push ebx