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Now 4 function can output zero-ended(ASCIIZ) strings.

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The strings output code was optimized.
Fixed bug - max string length was being checked incorrectly

git-svn-id: svn://kolibrios.org@106 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
john 2006-07-26 09:56:06 +00:00
parent 82859246df
commit 07ff3f1978
1 changed files with 38 additions and 70 deletions
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108
kernel/trunk/gui/font.inc
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@ -1,45 +1,36 @@
align 4
dtext:
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
test ebx,0x10000000
jnz dtext2
pushad
mov esi, edx
and esi, 0xff
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
popad
ret
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:
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:
drawletter: ;output char of type 1(monotype)
;eax - x
;ebx - y
;ecx - color
@ -68,52 +59,20 @@ drawletter:
dec esi
jnz .symloop
popad
ret
add eax,6
inc ebp ;ptr to text
dec esi ;length
jnz dtext.lnew
jmp dtext.output_end
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
dtext.letnew2:
align 4
drawletter2:
drawletter2: ;output char of type 2(proportional)
;eax - x
;ebx - y
;ecx - color
@ -148,4 +107,13 @@ drawletter2:
movzx edx,byte [ebp-10]
add [esp+32-4],edx
popad
ret
inc ebp ;ptr to text
dec esi ;length
jnz dtext.lnew
dtext.output_end:
popad
ret