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431 serge 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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593 mikedld 8 
$Revision: 750 $
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1 ha 11 
;
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; Call of videomode driver's functions
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;
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; (Add in System function 21 (and/or 26) as a subfunction 13)
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;
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; Author: Trans
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; Date:  19.07.2003
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;
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; Include in MeOS kernel and compile with FASM
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;
49 mikedld 21 
 
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uglobal
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  old_screen_width  dd ?
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  old_screen_height dd ?
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endg
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1 ha 27 
     cmp  eax,13                 ; CALL VIDEOMODE DRIVER FUNCTIONS
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     jne  .no_vmode_drv_access
381 serge 29 
        pushd   [ScreenWidth] [ScreenHeight]
49 mikedld 30 
	popd	[old_screen_height] [old_screen_width]
1 ha 31 
     or   eax,-1                 ; If driver is absent then eax does not change
472 serge 32 
     call (VMODE_BASE+0x100)     ; Entry point of video driver
1 ha 33 
     mov  [esp+36],eax
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     mov  [esp+24],ebx
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     mov  [esp+32],ecx
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;    mov  [esp+28],edx
49 mikedld 37 
	mov	eax,[old_screen_width]
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	mov	ebx,[old_screen_height]
381 serge 39 
        sub     eax,[ScreenWidth]
49 mikedld 40 
	jnz	@f
381 serge 41 
        sub     ebx,[ScreenHeight]
49 mikedld 42 
	jz	.resolution_wasnt_changed
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	jmp	.lp1
381 serge 44 
    @@: sub     ebx,[ScreenHeight]
49 mikedld 45 
  .lp1: sub	[screen_workarea.right],eax
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	sub	[screen_workarea.bottom],ebx
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	call	repos_windows
112 poddubny 49 
        mov     eax, 0
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        mov     ebx, 0
381 serge 51 
        mov     ecx, [ScreenWidth]
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        mov     edx, [ScreenHeight]
49 mikedld 53 
	call	calculatescreen
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  .resolution_wasnt_changed:
1 ha 56 
     ret
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   .no_vmode_drv_access: