232 lines
3.7 KiB
NASM
232 lines
3.7 KiB
NASM
;===[includes]===;
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include 'lang.inc'
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include 'ascl.inc'
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include 'macros.inc'
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;===[header and etc.]===;
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meos_app_start
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;===[code:]===;
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code
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;---------------------------------------
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;====== we want keyborad events ========
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mov eax,40
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mov ebx,00000000000000000000000000000010b
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int 0x40
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;====== wanna use keyboard scan codes ==
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mov eax,66
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mov ebx,1
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mov ecx,1
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int 0x40
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;=======GET SCREEN SIZE=================
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mov eax,14 ; get screen size
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int 0x40
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push eax
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and eax,0x0000ffff
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inc eax
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mov [size_y],eax
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pop eax
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shr eax,16
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inc eax
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mov [size_x],eax
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mov eax,[size_x]
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shr eax,2
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mov [cmp_ecx],eax
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mov eax,[size_x]
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xor edx,edx
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mov ebx,3
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mul ebx
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mov [add_esi],eax
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mov eax,[size_y]
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shr eax,2
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mov [cmp_edx],eax
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mov eax,[size_y]
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imul eax,[size_x]
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imul eax,3
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mov [i_size],eax
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;=======================================
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still:
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mov eax,10
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int 0x40
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cmp eax,2
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je key
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jmp still
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key:
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mov eax,2
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int 0x40
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cmp ah,55 ;===print screen to hdd
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je print_screen_hdd
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cmp ah,84 ;===alt+prnt.screen = print screen to fdd
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je print_screen_fdd
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cmp ah,70 ;===lets make exit - scroll lock
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je close_now
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jmp still
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close_now:
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close
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;==================================
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;===save file to hdd===============
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print_screen_hdd:
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mov [savetofdd],0
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call change_fname
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call save_screen
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jmp still
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;===save file to fdd===============
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print_screen_fdd:
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mov [savetofdd],1
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call change_fname
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call save_screen
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jmp still
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;===change our file name ==========
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change_fname:
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cmp [bmp_name+7],'9'
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jne addfname
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cmp [bmp_name+6],'9'
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je leavenow ;if name is > than 'screen99.bmp' then we do not change name
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mov [bmp_name+7],'0'
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add [bmp_name+6],0x1
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jmp leavenow
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addfname:
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add [bmp_name+7],0x1
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leavenow:
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ret
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;==================================
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;============SAVE SCREEN===========
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read_pixel:
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pushad
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mov esi,eax
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mov eax,[size_x]
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mul ebx
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add eax,esi
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xchg eax,ebx
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mov eax,35
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int 0x40
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mov [esp+28],eax
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popad
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ret
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save_screen:
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pusha
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; 1) READ SCREEN
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mov edi,bmp_file_area+0x36 ;0x10036
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mov eax,[size_y]
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dec eax
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mov [temp_y],eax
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ynew:
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xor eax,eax
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mov [temp_x],eax
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xnew:
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mov eax,[temp_x]
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mov ebx,[temp_y]
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call read_pixel
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mov [edi],eax
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add edi,3
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inc [temp_x]
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mov eax,[size_x]
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cmp [temp_x],eax
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jb xnew
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dec [temp_y]
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cmp [temp_y],0
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jge ynew
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; 2) BMP HEADER
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mov [bmp_file_area],word 'BM' ; bmp signature
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mov eax,[i_size]
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mov [bmp_file_area+34],eax ; image size
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mov ebx,0x36
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mov [bmp_file_area+10],ebx ; headers size
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add eax,ebx
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mov [bmp_file_area+2],eax ; file size
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mov [bmp_file_area+14],dword 0x28
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mov eax,[size_x]
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mov [bmp_file_area+18],eax ; x size
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mov eax,[size_y]
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mov [bmp_file_area+22],eax ; y size
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mov [bmp_file_area+26],word 1
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mov [bmp_file_area+28],word 0x18 ; bpp = 24 = 0x18
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; 3) SAVE FILE
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cmp [savetofdd],1
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je save_to_fdd
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mov eax,56
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mov ebx,bmp_name
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mov edx,bmp_file_area
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mov ecx,[i_size]
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add ecx,0x36
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mov esi,path
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int 0x40
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popa
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ret
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save_to_fdd:
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mov eax,33;
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mov ebx,bmp_name
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mov ecx,bmp_file_area
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mov edx,[i_size]
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add edx,0x36
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mov esi,0
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int 0x40
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popa
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ret
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;=======================================
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;---------------------------------------
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;===[DATA]===;
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data
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;---------------------------------------
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bmp_name db 'SCREEN00BMP'
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path db 0
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i_size dd 0x1
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m_x dd 100
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m_y dd 100
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cmp_ecx dd 0
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add_esi dd 0
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cmp_edx dd 0
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savetofdd db 0
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;===[uninitialised data]===;
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udata
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;---------------------------------------
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temp_x dd ?
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temp_y dd ?
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size_x dd ?
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size_y dd ?
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bmp_file_area:
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rb 0x250000
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;the happy end
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meos_app_end |