kolibrios-fun/programs/demos/transp/trunk/transp.asm

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NASM
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;
; TRANSPARENT EXAMPLE
;
; Compile with FASM for Menuet
;
use32
org 0x0
db 'MENUET01' ; 8 byte id
dd 0x01 ; header version
dd START ; start of code
dd I_END ; size of image
dd 0x30000 ; memory for app
dd 0x30000 ; esp
dd 0x0 , 0x0 ; I_Param , I_Icon
include 'lang.inc'
include 'macros.inc'
START: ; start of execution
mov [procinfo.x_start], 100
mov [procinfo.x_size], 200
mov [procinfo.y_start], 80
mov [procinfo.y_size], 300
call draw_window
red:
call get_transparent
call draw_window ; at first, draw the window
still:
mov eax,10 ; wait here for event
int 0x40
cmp eax,1 ; redraw request ?
je red
cmp eax,2 ; key in buffer ?
je key
cmp eax,3 ; button in buffer ?
je button
jmp still
key: ; key
mov al,2 ; just read it and ignore
int 0x40
jmp still
button: ; button
mov al,17 ; get id
int 0x40
cmp ah,1 ; button id=1 ?
jne noclose
or eax,-1 ; close this program
int 0x40
noclose:
jmp still
; *********************************************
; ******* WINDOW DEFINITIONS AND DRAW ********
; *********************************************
draw_window:
mov eax,12 ; function 12:tell os about windowdraw
mov ebx,1 ; 1, start of draw
int 0x40
; DRAW WINDOW
xor eax,eax ; function 0 : define and draw window
mov ebx,[procinfo.x_start]
shl ebx,16
add ebx,[procinfo.x_size]
mov ecx,[procinfo.y_start]
shl ecx,16
add ecx,[procinfo.y_size]
mov edx,0x33000000 ; color of work area RRGGBB,8->color gl
mov edi,header ; WINDOW LABEL
int 0x40
call draw_transparent
mov eax,12 ; function 12:tell os about windowdraw
mov ebx,2 ; 2, end of draw
int 0x40
ret
draw_transparent:
pusha
mov eax,7
mov ebx,0x1000
mov ecx,[procinfo.x_size]
shl ecx,16
add ecx,[procinfo.y_size]
xor edx,edx
int 0x40
popa
ret
get_transparent:
pusha
mov eax,9
mov ebx,I_END
mov ecx,-1
int 0x40
mov eax,14
int 0x40
shr eax,16
inc eax
mov [scx],eax
add [procinfo.x_start], 4
sub [procinfo.x_size], 4+4
add [procinfo.y_start], 22
sub [procinfo.y_size], 22+4
mov eax,[procinfo.x_start]
add eax,[procinfo.x_size]
mov [x_end],eax
mov eax,[procinfo.y_start]
add eax,[procinfo.y_size]
mov [y_end],eax
mov eax,[procinfo.x_start]
mov ebx,[procinfo.y_start]
dtpl1:
push eax
push ebx
imul ebx,[scx]
add ebx,eax
mov eax,35
int 0x40
or eax, 0x4e4e4e
mov ebx,[esp+4]
mov ecx,[esp]
sub ebx,[procinfo.x_start]
sub ecx,[procinfo.y_start]
imul ecx,[procinfo.x_size]
imul ebx,3
imul ecx,3
add ebx,ecx
mov [0x1000+ebx],eax
pop ebx
pop eax
inc eax
cmp eax,[x_end]
jb dtpl1
mov eax,[procinfo.x_start]
inc ebx
cmp ebx,[y_end]
jb dtpl1
popa
ret
; DATA AREA
;x_start dd 100
;y_start dd 80
;x_size dd 160
;y_size dd 200
x_end dd 0
y_end dd 0
scx dd 640
header db 'Transparent',0
I_END:
procinfo process_information