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kolibrios/kernel/branches/net/gui/button.inc
CleverMouse d003a8b8fe sync with trunk 
git-svn-id: svn://kolibrios.org@1376 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-01-15 11:54:11 +00:00

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision$
button._.MAX_BUTTONS = 4095
;==============================================================================
;///// public functions ///////////////////////////////////////////////////////
;==============================================================================
struc SYS_BUTTON
{
.pslot dw ?
.id_lo dw ?
.left dw ?
.width dw ?
.top dw ?
.height dw ?
.id_hi dw ?
.sizeof:
}
virtual at 0
SYS_BUTTON SYS_BUTTON
end virtual
iglobal
mx dw 0x0 ; keeps the x mouse's position when it was clicked
my dw 0x0 ; keeps the y mouse's position when it was clicked
bPressedMouseXY_B db 0x0
btn_down_determ db 0x0
endg
align 4
;------------------------------------------------------------------------------
syscall_button: ;///// system function 8 //////////////////////////////////////
;------------------------------------------------------------------------------
;? Define/undefine GUI button object
;------------------------------------------------------------------------------
;; Define button:
;> ebx = pack[16(x), 16(width)]
;> ecx = pack[16(y), 16(height)]
;> edx = pack[8(flags), 24(button identifier)]
;> flags bits:
;> 7 (31) = 0
;> 6 (30) = don't draw button
;> 5 (29) = don't draw button frame when pressed
;> esi = button color
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
;; Undefine button:
;> edx = pack[8(flags), 24(button identifier)]
;> flags bits:
;> 7 (31) = 1
;------------------------------------------------------------------------------
; do we actually need to undefine the button?
test edx, 0x80000000
jnz .remove_button
; do we have free button slots available?
mov edi, [BTN_ADDR]
mov eax, [edi]
cmp eax, button._.MAX_BUTTONS
jge .exit
; does it have positive size? (otherwise it doesn't have sense)
or bx, bx
jle .exit
or cx, cx
jle .exit
; make coordinates clientbox-relative
push eax
mov eax, [current_slot]
rol ebx, 16
add bx, word[eax + APPDATA.wnd_clientbox.left]
rol ebx, 16
rol ecx, 16
add cx, word[eax + APPDATA.wnd_clientbox.top]
rol ecx, 16
pop eax
; basic checks passed, define the button
push ebx ecx edx
inc eax
mov [edi], ax
shl eax, 4
add edi, eax
; NOTE: this code doesn't rely on SYS_BUTTON struct, please revise it
; if you change something
mov ax, [CURRENT_TASK]
stosw
mov ax, dx
stosw ; button id number: bits 0-15
mov eax, ebx
rol eax, 16
stosd ; x start | x size
mov eax, ecx
rol eax, 16
stosd ; y start | y size
mov eax, edx
shr eax, 16
stosw ; button id number: bits 16-31
pop edx ecx ebx
; do we also need to draw the button?
test edx, 0x40000000
jnz .exit
; draw button body
pushad
; calculate window-relative coordinates
movzx edi, cx
shr ebx, 16
shr ecx, 16
mov eax, [TASK_BASE]
add ebx, [eax - twdw + WDATA.box.left]
add ecx, [eax - twdw + WDATA.box.top]
mov eax, ebx
shl eax, 16
mov ax, bx
add ax, word[esp + 16]
mov ebx, ecx
shl ebx, 16
mov bx, cx
; calculate initial color
mov ecx, esi
cmp [buttontype], 0
je @f
call button._.incecx2
; set button height counter
@@: mov edx, edi
.next_line:
call button._.button_dececx
push edi
xor edi, edi
call [draw_line]
pop edi
add ebx, 0x00010001
dec edx
jnz .next_line
popad
; draw button frame
push ebx ecx
; calculate window-relative coordinates
shr ebx, 16
shr ecx, 16
mov eax, [TASK_BASE]
add ebx, [eax - twdw + WDATA.box.left]
add ecx, [eax - twdw + WDATA.box.top]
; top border
mov eax, ebx
shl eax, 16
mov ax, bx
add ax, [esp + 4]
mov ebx, ecx
shl ebx, 16
mov bx, cx
push ebx
xor edi, edi
mov ecx, esi
call button._.incecx
call [draw_line]
; bottom border
movzx edx, word[esp + 4 + 0]
add ebx, edx
shl edx, 16
add ebx, edx
mov ecx, esi
call button._.dececx
call [draw_line]
; left border
pop ebx
push edx
mov edx, eax
shr edx, 16
mov ax, dx
mov edx, ebx
shr edx, 16
mov bx, dx
add bx, [esp + 4 + 0]
pop edx
mov ecx, esi
call button._.incecx
call [draw_line]
; right border
mov dx, [esp + 4]
add ax, dx
shl edx, 16
add eax, edx
add ebx, 0x00010000
mov ecx, esi
call button._.dececx
call [draw_line]
pop ecx ebx
.exit:
ret
; FIXME: mutex needed
syscall_button.remove_button:
and edx, 0x00ffffff
mov edi, [BTN_ADDR]
mov ebx, [edi]
inc ebx
imul esi, ebx, SYS_BUTTON.sizeof
add esi, edi
xor ecx, ecx
add ecx, -SYS_BUTTON.sizeof
.next_button:
dec ebx
jz .exit
add ecx, SYS_BUTTON.sizeof
add esi, -SYS_BUTTON.sizeof
; does it belong to our process?
mov ax, [CURRENT_TASK]
cmp ax, [esi + SYS_BUTTON.pslot]
jne .next_button
; does the identifier match?
mov eax, dword[esi + SYS_BUTTON.id_hi - 2]
mov ax, [esi + SYS_BUTTON.id_lo]
and eax, 0x00ffffff
cmp edx, eax
jne .next_button
; okay, undefine it
push ebx
mov ebx, esi
lea eax, [esi + SYS_BUTTON.sizeof]
call memmove
dec dword[edi]
add ecx, -SYS_BUTTON.sizeof
pop ebx
jmp .next_button
.exit:
ret
align 4
;------------------------------------------------------------------------------
check_buttons: ;///////////////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
cmp byte[BTN_DOWN], 0 ; mouse buttons pressed
jnz @f
mov [bPressedMouseXY_B], 0
ret
@@: pushad
xor esi, esi
mov edi, [BTN_ADDR]
mov edx, [edi]
test edx, edx
jne @f
popad
ret
;here i catch the coordinates when the mouse's button is clicked
@@: push ax
cmp [bPressedMouseXY_B], 0 ; FALSE
jnz @f
mov [bPressedMouseXY_B], 1 ; TRUE - it was already clicked
mov ax, [MOUSE_X]
mov [mx], ax
mov ax, [MOUSE_Y]
mov [my], ax
@@: pop ax
;and it is only refreshed after the mouse's button release
push esi
inc edx
push edx
.buttonnewcheck:
pop edx
pop esi
inc esi
cmp edx, esi
jge .bch
popad
ret
.bch:
push esi
push edx
mov eax, esi
shl eax, 4
add eax, edi
; check that button is at top of windowing stack
movzx ebx, [eax + SYS_BUTTON.pslot]
movzx ecx, word[WIN_STACK + ebx * 2]
cmp ecx, [TASK_COUNT]
jne .buttonnewcheck
; check that button start is inside window x/y end
shl ebx, 5
test [ebx + window_data + WDATA.fl_wstate], WSTATE_MINIMIZED
jnz .buttonnewcheck
movzx edx, [eax + SYS_BUTTON.left]
cmp edx, [window_data + ebx + WDATA.box.width] ;ecx
jge .buttonnewcheck
movzx edx, [eax + SYS_BUTTON.top]
cmp edx, [window_data + ebx + WDATA.box.height] ;ecx
jge .buttonnewcheck
; check coordinates
; mouse x >= button x ?
add ebx, window_data
mov ecx, [ebx + WDATA.box.left]
movzx edx, [eax + SYS_BUTTON.left]
add edx, ecx
mov cx, [mx] ;mov cx,[MOUSE_X]
cmp edx, ecx
jg .buttonnewcheck
movzx ebx, [eax + SYS_BUTTON.width]
add edx, ebx
cmp ecx, edx
jg .buttonnewcheck
; mouse y >= button y ?
movzx ebx, [eax + SYS_BUTTON.pslot]
shl ebx, 5
add ebx, window_data
mov ecx, [ebx + WDATA.box.top]
movzx edx, [eax + SYS_BUTTON.top]
add edx, ecx
mov cx, [my] ;mov cx,[MOUSE_Y]
cmp edx, ecx
jg .buttonnewcheck
movzx ebx, [eax + SYS_BUTTON.height]
add edx, ebx
cmp ecx, edx
jg .buttonnewcheck
; mouse on button
pop edx
pop esi
mov ebx, dword[eax + SYS_BUTTON.id_hi - 2] ; button id : bits 16-31
mov bx, [eax + SYS_BUTTON.id_lo] ; button id : bits 00-16
push ebx
mov byte[MOUSE_DOWN], 1 ; no mouse down checks
call button._.negative_button
pushad
push eax
mov al, [BTN_DOWN]
mov byte[btn_down_determ], al
pop eax
.cbwaitmouseup:
call checkidle
call [draw_pointer]
pushad
call stack_handler
popad
cmp byte[BTN_DOWN], 0 ; mouse buttons pressed ?
jnz .cbwaitmouseup
popad
call button._.negative_button
mov byte[MOUSE_BACKGROUND], 0 ; no mouse background
mov byte[DONT_DRAW_MOUSE], 0 ; draw mouse
; check coordinates
pusha
; mouse x >= button x ?
movzx ebx, [eax + SYS_BUTTON.pslot]
shl ebx, 5
add ebx, window_data
mov ecx, [ebx + WDATA.box.left]
movzx edx, [eax + SYS_BUTTON.left]
add edx, ecx
mov cx, [MOUSE_X]
cmp edx, ecx
jg .no_on_button ;if we release the pointer out of the button area
movzx ebx, [eax + SYS_BUTTON.width]
add edx, ebx
cmp ecx, edx
jg .no_on_button
; mouse y >= button y ?
movzx ebx, [eax + SYS_BUTTON.pslot]
shl ebx, 5
add ebx, window_data
mov ecx, [ebx + WDATA.box.top]
movzx edx, [eax + SYS_BUTTON.top]
add edx, ecx
mov cx, [MOUSE_Y]
cmp edx, ecx
jg .no_on_button
movzx ebx, [eax + SYS_BUTTON.height]
add edx, ebx
cmp ecx, edx
jg .no_on_button
popa
mov byte[BTN_COUNT], 1 ; no of buttons in buffer
pop ebx
mov [BTN_BUFF], ebx ; lets put the button id in buffer
push ebx
pusha
jmp .yes_on_button
.no_on_button:
mov byte[BTN_COUNT], 0 ; no of buttons in buffer
.yes_on_button:
mov byte[MOUSE_DOWN], 0 ; mouse down -> do not draw
popa
pop ebx
popa
ret
;==============================================================================
;///// private functions //////////////////////////////////////////////////////
;==============================================================================
;------------------------------------------------------------------------------
button._.dececx: ;/////////////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
sub cl, 0x20
jnc @f
xor cl, cl
@@: sub ch, 0x20
jnc @f
xor ch, ch
@@: rol ecx, 16
sub cl, 0x20
jnc @f
xor cl, cl
@@: rol ecx, 16
ret
;------------------------------------------------------------------------------
button._.incecx: ;/////////////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
add cl, 0x20
jnc @f
or cl, -1
@@: add ch, 0x20
jnc @f
or ch, -1
@@: rol ecx, 16
add cl, 0x20
jnc @f
or cl, -1
@@: rol ecx, 16
ret
;------------------------------------------------------------------------------
button._.incecx2: ;////////////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
add cl, 0x14
jnc @f
or cl, -1
@@: add ch, 0x14
jnc @f
or ch, -1
@@: rol ecx, 16
add cl, 0x14
jnc @f
or cl, -1
@@: rol ecx, 16
ret
;------------------------------------------------------------------------------
button._.button_dececx: ;//////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
cmp [buttontype], 1
jne .finish
push eax
mov al, 1
cmp edi, 20
jg @f
mov al, 2
@@: sub cl, al
jnc @f
xor cl, cl
@@: sub ch, al
jnc @f
xor ch, ch
@@: rol ecx, 16
sub cl, al
jnc @f
xor cl, cl
@@: rol ecx, 16
pop eax
.finish:
ret
;------------------------------------------------------------------------------
button._.negative_button: ;////////////////////////////////////////////////////
;------------------------------------------------------------------------------
;? <description>
;------------------------------------------------------------------------------
; if requested, do not display button border on press.
test ebx, 0x20000000
jnz .exit
pushad
xchg esi, eax
movzx ecx, [esi + SYS_BUTTON.pslot]
shl ecx, 5
add ecx, window_data
mov eax, dword[esi + SYS_BUTTON.left]
mov ebx, dword[esi + SYS_BUTTON.top]
add eax, [ecx + WDATA.box.left]
add ebx, [ecx + WDATA.box.top]
push eax ebx
pop edx ecx
rol eax, 16
rol ebx, 16
add ax, cx
add bx, dx
mov esi, 0x01000000
call draw_rectangle.forced
popad
.exit:
ret
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