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bugfix in bootscreen scrollbar handling (bug #3) 

git-svn-id: svn://kolibrios.org@834 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond) 2008-07-24 16:32:10 +00:00
parent 94e7e92eb7
commit 93caed27c6
1 changed files with 94 additions and 81 deletions
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175
kernel/trunk/boot/bootvesa.inc
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@ -81,6 +81,8 @@ end virtual
cursor_pos dw 0 ;âðåìåííîå õðàíåíèå êóðñîðà.
home_cursor dw 0 ;current shows rows a table
end_cursor dw 0 ;end of position current shows rows a table
scroll_start dw 0 ;start position of scroll bar
scroll_end dw 0 ;end position of scroll bar
long_v_table equ 9 ;long of visible video table
size_of_step equ 10
scroll_area_size equ (long_v_table-2)
@ -482,79 +484,8 @@ draw_vmodes_table:
.ok:
mov bp,long_v_table ;show rows
.@@_next_bit:
cmp word [es:si+6],0x12
je .show_0x12
cmp word [es:si+6],0x13
je .show_0x13
movzx eax,word[es:si]
cmp ax,-1
je .@@_end
mov di,_rs+23
mov ecx,10
mov bl,4
call int2str
movzx eax,word[es:si+2]
inc di
mov bl,4
call int2str
movzx eax,word[es:si+8]
inc di
mov bl,2
call int2str
;clear cursor
mov word[ds:_r1+21],' '
mov word[ds:_r1+50],' '
mov word[ds:_r2+21],' '
mov word[ds:_r2+45],' '
mov word[ds:_rs+21],' '
mov word[ds:_rs+46],' '
cmp si, word [cursor_pos]
jne .next
;draw cursor
mov word[ds:_rs+21],'>>'
mov word[ds:_rs+46],'<<'
.next:
; calculate scroll position
push si
mov si,_rs
.@@_sh:
call printplain
pop si
add si,size_of_step
dec bp
jnz .@@_next_bit
.@@_end:
mov si,_bt
call printplain
; show scroll
push es
push 0xB800
pop es
; arrows
mov di, (11*80+53)*2
mov al, 30
stosb
add di, 80*2-1
mov al, 32
mov cx, scroll_area_size
@@:
stosb
add di, 80*2-1
loop @b
mov al, 31
stosb
; calculate scroll size
mov ax, [end_cursor]
sub ax, modes_table
mov bx, size_of_step
@ -584,19 +515,101 @@ draw_vmodes_table:
sub al, scroll_area_size+1
neg al
sub si, long_v_table-1
jbe .draw_scroll
jbe @f
mul di
div si
mov bx, ax
.draw_scroll:
mov al, 0xDB
imul di, bx, 80*2
add di, (12*80+53)*2
@@:
stosb
add di, 80*2-1
loop @b
pop es
inc bx
imul ax, bx, size_of_step
add ax, [home_cursor]
mov [scroll_start], ax
imul cx, size_of_step
add ax, cx
mov [scroll_end], ax
pop si
mov bp,long_v_table ;show rows
.@@_next_bit:
;clear cursor
mov word[ds:_r1+21],' '
mov word[ds:_r1+50],' '
mov word[ds:_r2+21],' '
mov word[ds:_r2+45],' '
mov word[ds:_rs+21],' '
mov word[ds:_rs+46],' '
; draw string
cmp word [es:si+6],0x12
je .show_0x12
cmp word [es:si+6],0x13
je .show_0x13
movzx eax,word[es:si]
cmp ax,-1
je .@@_end
mov di,_rs+23
mov ecx,10
mov bl,4
call int2str
movzx eax,word[es:si+2]
inc di
mov bl,4
call int2str
movzx eax,word[es:si+8]
inc di
mov bl,2
call int2str
cmp si, word [cursor_pos]
jne .next
;draw cursor
mov word[ds:_rs+21],'>>'
mov word[ds:_rs+46],'<<'
.next:
push si
mov si,_rs
.@@_sh:
; add to the string pseudographics for scrollbar
pop bx
push bx
mov byte [si+53], ' '
cmp bx, [scroll_start]
jb @f
cmp bx, [scroll_end]
jae @f
mov byte [si+53], 0xDB ; filled bar
@@:
push bx
add bx, size_of_step
cmp bx, [end_cursor]
jnz @f
mov byte [si+53], 31 ; 'down arrow' symbol
@@:
sub bx, [home_cursor]
cmp bx, size_of_step*long_v_table
jnz @f
mov byte [si+53], 31 ; 'down arrow' symbol
@@:
pop bx
cmp bx, [home_cursor]
jnz @f
mov byte [si+53], 30 ; 'up arrow' symbol
@@:
call printplain
pop si
add si,size_of_step
dec bp
jnz .@@_next_bit
.@@_end:
mov si,_bt
call printplain
ret
.show_0x13:
push si