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Function 18.24 - set limits of screen.

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git-svn-id: svn://kolibrios.org@2654 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Marat Zakiyanov (Mario79)
2012-04-30 22:07:24 +00:00
parent 6ea08a8bb3
commit 01431c16e7
3 changed files with 86 additions and 1 deletions
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51
kernel/trunk/kernel.asm
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@@ -383,11 +383,13 @@ high_code:
movzx eax, word [BOOT_VAR+BOOT_X_RES]; X max
mov [_display.width], eax
mov [display_width_standard], eax
dec eax
mov [Screen_Max_X], eax
mov [screen_workarea.right], eax
movzx eax, word [BOOT_VAR+BOOT_Y_RES]; Y max
mov [_display.height], eax
mov [display_height_standard], eax
dec eax
mov [Screen_Max_Y], eax
mov [screen_workarea.bottom], eax
@@ -2055,6 +2057,7 @@ sys_system_table:
dd sysfn_pid_to_slot ; 21 = get slot number for pid
dd sysfn_min_rest_window ; 22 = minimize and restore any window
dd sysfn_min_windows ; 23 = minimize all windows
dd sysfn_set_screen_sizes ; 24 = set screen sizes for Vesa
sysfn_num = ($ - sys_system_table)/4
endg
;------------------------------------------------------------------------------
@@ -2410,10 +2413,45 @@ sysfn_min_windows:
call change_task
ret
;------------------------------------------------------------------------------
sysfn_set_screen_sizes:
cmp [SCR_MODE], word 0x13
jbe .exit
cmp [_display.select_cursor], select_cursor
jne .exit
cmp ecx, [display_width_standard]
ja .exit
cmp edx, [display_height_standard]
ja .exit
pushfd
cli
mov eax, ecx
mov ecx, [BytesPerScanLine]
mov [_display.width], eax
dec eax
mov [_display.height], edx
dec edx
; eax - new Screen_Max_X
; edx - new Screen_Max_Y
mov [do_not_touch_winmap], 1
call set_screen
mov [do_not_touch_winmap], 0
popfd
call change_task
.exit:
ret
;------------------------------------------------------------------------------
uglobal
screen_workarea RECT
display_width_standard dd 0
display_height_standard dd 0
do_not_touch_winmap db 0
window_minimize db 0
sound_flag db 0
endg
UID_NONE=0
@@ -5158,6 +5196,10 @@ calculate_fast_getting_offset_for_LFB:
;------------------------------------------------------------------------------
align 4
set_screen:
; in:
; eax - new Screen_Max_X
; ecx - new BytesPerScanLine
; edx - new Screen_Max_Y
cmp eax, [Screen_Max_X]
jne .set
@@ -5181,6 +5223,9 @@ set_screen:
pushad
cmp [do_not_touch_winmap], 1
je @f
stdcall kernel_free, [_WinMapAddress]
mov eax, [_display.width]
@@ -5191,7 +5236,13 @@ set_screen:
mov [_WinMapAddress], eax
test eax, eax
jz .epic_fail
; store for f.18.24
mov eax, [_display.width]
mov [display_width_standard], eax
mov eax, [_display.height]
mov [display_height_standard], eax
@@:
call calculate_fast_getting_offset_for_WinMapAddress
; for Qemu or non standart video cards
; Unfortunately [BytesPerScanLine] does not always