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/programs/demos/magnify/trunk/magnify.asm
8,341 → 8,145
 
org 0x0
 
db 'MENUET00' ; 8 byte id
dd 38 ; required os
db 'MENUET01' ; 8 byte id
dd 1 ; header version
dd START ; program start
dd I_END ; program image size
dd 0x10000 ; required amount of memory
dd 0x10000
dd 0x00000000 ; reserved=no extended header
dd 0x1000 ; required amount of memory
dd 0x1000 ; esp
dd 0, 0 ; no parameters, no path
 
include 'lang.inc'
include 'macros.inc'
scr equ 0x1000
delay equ 20
 
magnify_width = 40
magnify_height = 30
 
START: ; start of execution
 
mov esp,0xfff0
 
mov eax,14 ; get screen size
int 0x40
push eax
and eax,0x0000ffff
add eax,1
mov [size_y],eax
pop eax
shr eax,16
add eax,1
mov [size_x],eax
 
mov eax,[size_x]
shr eax,2
mov [cmp_ecx],eax
 
mov eax,[size_x]
xor edx,edx
mov ebx,3
mul ebx
mov [add_esi],eax
 
mov eax,[size_y]
shr eax,2
mov [cmp_edx],eax
 
 
 
call draw_window ; at first, draw the window
 
redraw:
call draw_window
still:
 
call draw_screen
 
wtevent:
mov eax,23 ; wait here for event with timeout
mov ebx,[delay]
mov ebx, delay
int 0x40
 
cmp eax,1 ; redraw request ?
jz red
cmp eax,2 ; key in buffer ?
jz key
cmp eax,3 ; button in buffer ?
jz button
 
jmp still
 
red: ; redraw
call draw_window
jmp still
 
key: ; key
mov eax,2 ; just read it and ignore
dec eax
js still
jz redraw
dec eax
jnz button
; key in buffer
mov al, 2
int 0x40
jmp still
 
button: ; button
mov eax,17 ; get id
jmp wtevent
button:
; we have only one button, close
or eax, -1
int 0x40
 
cmp ah,1 ; button id=1 ?
jnz noclose
mov eax,0xffffffff ; close this program
int 0x40
noclose:
 
cmp ah,2
jnz nosave
call save_screen
nosave:
 
jmp still
 
 
 
save_screen:
 
pusha
 
mov ebx,0
mov edi,0x10000
 
ss1:
 
mov eax,35
int 0x40
 
add ebx,1
 
mov [edi],eax
add edi,3
 
cmp edi,0xFFFF0
jb ss1
 
mov eax,33
mov ebx,filename
mov ecx,0x10000
mov edx,0xEFFF0
mov esi,0
int 0x40
 
popa
 
ret
 
 
filename db 'SCREEN RAW'
 
; *********************************************
; ******* 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
mov eax,0 ; function 0 : define and draw window
mov ebx,100*65536 ; [x start] *65536 + [x size]
mov ebx,100*65536+322
mov ecx,100*65536+262 ; [y start] *65536 + [y size]
mov edx,0x0;01111cc ; color of work area RRGGBB
mov esi,0x809977ff ; color of grab bar RRGGBB,8->color glide
mov edi,0x00ffff00 ; color of frames RRGGBB
mov al, 48 ; function 48 : graphics parameters
mov bl, 4 ; subfunction 4 : get skin height
int 0x40
 
; WINDOW LABEL
mov eax,4 ; function 4 : write text to window
mov ebx,8*65536+8 ; [x start] *65536 + [y start]
mov ecx,0x00ffffff ; color of text RRGGBB
mov edx,labelt ; pointer to text beginning
mov esi,labellen-labelt ; text length
; DRAW WINDOW
mov ebx, 100*65536 + 8*magnify_width + 8
lea ecx, [eax + 100*65536 + 8*magnify_height + 3]
mov edx, 0x33000000 ; color of work area RRGGBB
mov edi, labelt ; header
xor eax, eax ; function 0 : define and draw window
int 0x40
 
; CLOSE BUTTON
mov eax,8 ; function 8 : define and draw button
mov bx,12 ; [x start] *65536 + [x size]
mov ebx,(322-19)*65536+12
mov ecx,5*65536+12 ; [y start] *65536 + [y size]
mov edx,1 ; button id
mov esi,0x22aacc ; button color RRGGBB
int 0x40
 
call draw_screen
 
mov eax,12 ; function 12:tell os about windowdraw
mov al, 12 ; function 12:tell os about windowdraw
mov ebx,2 ; 2, end of draw
int 0x40
 
ret
 
 
draw_screen:
 
call draw_magnify
 
ret
 
pusha
 
mov edi,scr
 
mov ecx,0
mov edx,0
 
mov esi,0
 
ds1:
 
mov eax,35
mov ebx,esi
int 0x40
stosd
sub edi,1
 
add esi,4
add ecx,1
cmp ecx,[cmp_ecx] ; 800/4
jb ds1
 
add esi,[add_esi] ; 800*3
mov ecx,0
add edx,1
cmp edx,[cmp_edx] ; 600/4
jb ds1
 
mov eax,7
mov ebx,scr
mov ecx,200*65536+160
mov ecx,[size_x]
shr ecx,2
shl ecx,16
mov cx,word [size_y]
shr cx,2
mov edx,20*65536+35
int 0x40
 
popa
 
call draw_magnify
 
ret
 
 
draw_magnify:
mov eax, 14
int 0x40 ; get screen size
movzx ecx, ax
inc ecx
mov [size_y], ecx
shr eax, 16
inc eax
mov [size_x], eax
 
pusha
 
mov eax,37
mov ebx,0
int 0x40
 
xor ebx, ebx
int 0x40 ; get mouse coordinates
mov ecx,eax
mov edx,eax
shr ecx,16
and edx,65535
 
sub ecx,39
sub edx,29
 
cmp ecx,3000
jb co1
popa
ret
co1:
cmp edx,3000
jb co2
popa
ret
 
co2:
 
and ecx,2047
and edx,2047
 
shr ecx, 16 ; ecx = x
movzx edx, ax ; edx = y
inc ecx
mov [m_xe], ecx
inc edx
mov [m_ye], edx
sub ecx, magnify_width
sub edx, magnify_height
mov [m_x],ecx
mov [m_y],edx
 
add ecx,40
add edx,30
 
mov [m_xe],ecx
mov [m_ye],edx
 
mov ecx,[m_x]
mov edx,[m_y]
 
dm1:
 
push edx
mov eax,edx
mul [size_x]
pop edx
add eax,ecx
 
mov ebx,eax
.loop_y:
.loop_x:
xor eax, eax ; assume black color for invalid pixels
test ecx, ecx
js .nopix
cmp ecx, [size_x]
jge .nopix
test edx, edx
js .nopix
cmp edx, [size_y]
jge .nopix
mov ebx, edx
imul ebx, [size_x]
add ebx, ecx
mov eax,35
int 0x40
 
pusha
int 0x40 ; read pixel
.nopix:
push ecx edx
sub ecx, [m_x]
sub edx, [m_y]
mov ebx,ecx
sub ebx,[m_x]
shl ebx, 3+16
mov bl, 7
mov ecx,edx
sub ecx,[m_y]
shl ebx,3
add ebx,2
shl ebx,16
mov bx,7
shl ecx,3
add ecx,22
shl ecx,16
mov cx,7
 
shl ecx, 3+16
mov cl, 7
mov edx,eax
mov eax,13
int 0x40
popa
 
add ecx,1
pop edx ecx
inc ecx
cmp ecx,[m_xe]
jnz dm1
jnz .loop_x
mov ecx,[m_x]
add edx,1
inc edx
cmp edx,[m_ye]
jnz dm1
 
popa
 
jnz .loop_y
ret
 
 
 
; DATA AREA
 
m_x dd 100
m_y dd 100
 
m_xe dd 110
m_ye dd 110
 
size_x dd 0
size_y dd 0
 
cmp_ecx dd 0
add_esi dd 0
cmp_edx dd 0
 
delay dd 20
 
labelt:
db 'MAGNIFIER - MOVE MOUSE POINTER'
labellen:
db 'MAGNIFIER - MOVE MOUSE POINTER', 0
 
 
I_END:
 
 
 
align 4
m_x dd ?
m_y dd ?
m_xe dd ?
m_ye dd ?
size_x dd ?
size_y dd ?