Subversion Repositories Kolibri OS

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;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;

;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa      ;;

;; Distributed under terms of the GNU General Public License    ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision: 3451 $

WINDOW_MOVE_AND_RESIZE_FLAGS = \

  mouse.WINDOW_RESIZE_N_FLAG + \

  mouse.WINDOW_RESIZE_W_FLAG + \

  mouse.WINDOW_RESIZE_S_FLAG + \

  mouse.WINDOW_RESIZE_E_FLAG + \

  mouse.WINDOW_MOVE_FLAG

uglobal

align 4

  event_start   dd ?

  event_end     dd ?

  event_uid     dd 0

endg

EV_SPACE   = 512

FreeEvents = event_start-EVENT.fd    ; "âèðòóàëüíûé" event, èñïîëüçóþòñÿ òîëüêî ïîëÿ:

                                     ;  FreeEvents.fd=event_start è FreeEvents.bk=event_end

;-----------------------------------------------------------------------------

align 4

init_events:                                       ;; used from kernel.asm

        stdcall kernel_alloc, EV_SPACE*sizeof.EVENT

        or      eax, eax

        jz      .fail

      ; eax - current event, ebx - previos event below

        mov     ecx, EV_SPACE        ; current - in allocated space

        mov     ebx, FreeEvents      ; previos - íà÷àëî ñïèñêà

        push    ebx                  ; îíî æå è êîíåö ïîòîì áóäåò

;--------------------------------------

align 4

@@:

        mov     [ebx+EVENT.fd], eax

        mov     [eax+EVENT.bk], ebx

        mov     ebx, eax             ; previos <- current

        add     eax, sizeof.EVENT    ; new current

        loop    @b

        pop     eax                  ; âîò îíî êîíöîì è ñòàëî

        mov     [ebx+EVENT.fd], eax

        mov     [eax+EVENT.bk], ebx

;--------------------------------------

align 4

.fail:

        ret

;-----------------------------------------------------------------------------

EVENT_WATCHED    equ 0x10000000 ;áèò 28

EVENT_SIGNALED   equ 0x20000000 ;áèò 29

MANUAL_RESET     equ 0x40000000 ;áèò 30

MANUAL_DESTROY   equ 0x80000000 ;áèò 31

;-----------------------------------------------------------------------------

align 4

create_event:                                      ;; EXPORT use

;info:

;   Ïåðåíîñèì EVENT èç ñïèñêà FreeEvents â ñïèñîê ObjList òåêóùåãî ñëîòà

;   EVENT.state óñòàíàâëèâàåì èç ecx, EVENT.code êîñâåííî èç esi (åñëè esi<>0)

;param:

;   esi - event data

;   ecx - flags

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;scratched: ebx,ecx,esi,edi

        mov     ebx, [current_slot]

        add     ebx, APP_OBJ_OFFSET

        mov     edx, [TASK_BASE]

        mov     edx, [edx+TASKDATA.pid]

        pushfd

        cli

;--------------------------------------

align 4

set_event:                                         ;; INTERNAL use !!! don't use for Call

;info:

;   Áåðåì íîâûé event èç FreeEvents, çàïîëíÿåì åãî ïîëÿ, êàê óêàçàíî â ecx,edx,esi

;   è óñòàíàâëèâàåì â ñïèñîê, óêàçàííûé â ebx.

;   Âîçâðàùàåì ñàì event (â eax), è åãî uid (â edx)

;param:

;   ebx - start-chain "virtual" event for entry new event Right of him

;   ecx - flags      (copied to EVENT.state)

;   edx - pid        (copied to EVENT.pid)

;   esi - event data (copied to EVENT.code indirect, =0 => skip)

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;scratched: ebx,ecx,esi,edi

        mov     eax, FreeEvents

        cmp     eax, [eax+EVENT.fd]

        jne     @f  ; not empty ???

        pushad

        call    init_events

        popad

        jz      RemoveEventTo.break ; POPF+RET

;--------------------------------------

align 4

@@:

        mov     eax, [eax+EVENT.fd]

        mov     [eax+EVENT.magic], 'EVNT'

        mov     [eax+EVENT.destroy], destroy_event.internal

        mov     [eax+EVENT.state], ecx

        mov     [eax+EVENT.pid], edx

        inc     [event_uid]

        Mov     [eax+EVENT.id],edx,[event_uid]

        or      esi, esi

        jz      RemoveEventTo

        lea     edi, [eax+EVENT.code]

        mov     ecx, (sizeof.EVENT -EVENT.code)/4

        cld

        rep movsd

;--------------------------------------

align 4

RemoveEventTo:                                     ;; INTERNAL use !!! don't use for Call

;param:

;   eax - óêàçàòåëü íà event, ÊÎÒÎÐÛÉ âñòàâëÿåì

;   ebx - óêàçàòåëü íà event, ÏÎÑËÅ êîòîðîãî âñòàâëÿåì

;scratched: ebx,ecx

        mov     ecx, eax             ; ecx=eax=Self,      ebx=NewLeft

        xchg    ecx, [ebx+EVENT.fd]  ; NewLeft.fd=Self,   ecx=NewRight

        cmp     eax, ecx             ; ñòîï, ñåáå äóìàþ...

        je      .break               ; - à íå äóðàê ëè ÿ?

        mov     [ecx+EVENT.bk], eax  ; NewRight.bk=Self

        xchg    ebx, [eax+EVENT.bk]  ; Self.bk=NewLeft,   ebx=OldLeft

        xchg    ecx, [eax+EVENT.fd]  ; Self.fd=NewRight,  ecx=OldRight

        mov     [ebx+EVENT.fd], ecx  ; OldLeft.fd=OldRight

        mov     [ecx+EVENT.bk], ebx  ; OldRight.bk=OldLeft

;--------------------------------------

align 4

.break:

        popfd

        ret

;-----------------------------------------------------------------------------

align 4

NotDummyTest:                                      ;; INTERNAL use (not returned for fail !!!)

        pop     edi

        call    DummyTest ; not returned for fail !!!

        mov     ebx, eax

        mov     eax, [ebx+EVENT.pid]

        push    edi

;--------------------------------------

align 4

.small: ; êðèâî êàê-òî...

        pop     edi

        pushfd

        cli

        call    pid_to_slot ; saved all registers (eax - retval)

        shl     eax, 8

        jz      RemoveEventTo.break ; POPF+RET

        jmp     edi ; øòàòíûé âîçâðàò

;-----------------------------------------------------------------------------

align 4

raise_event:                                       ;; EXPORT use

;info:

;   Óñòàíàâëèâàåì äàííûå EVENT.code

;   Åñëè òàì ôëàã EVENT_SIGNALED óæå àêòèâåí - áîëüøå íè÷åãî

;   Èíà÷å: ýòîò ôëàã âçâîäèòñÿ, çà èñêëþ÷åíèåì ñëó÷àÿ íàëè÷èÿ ôëàãà EVENT_WATCHED â edx

;    ýòîì ñëó÷àå EVENT_SIGNALED âçâîäèòñÿ ëèøü ïðè íàëè÷èå EVENT_WATCHED â ñàìîì ñîáûòèè

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;   edx - flags

;   esi - event data (=0 => skip)

;scratched: ebx,ecx,esi,edi

        call    NotDummyTest ; not returned for fail !!!

        or      esi, esi

        jz      @f

        lea     edi, [ebx+EVENT.code]

        mov     ecx, (sizeof.EVENT -EVENT.code)/4

        cld

        rep movsd

;--------------------------------------

align 4

@@:

        test    byte[ebx+EVENT.state+3], EVENT_SIGNALED shr 24

        jnz     RemoveEventTo.break  ; POPF+RET

        bt      edx, 28 ;EVENT_WATCHED

        jnc     @f

        test    byte[ebx+EVENT.state+3], EVENT_WATCHED shr 24

        jz      RemoveEventTo.break  ; POPF+RET

;--------------------------------------

align 4

@@:

        or      byte[ebx+EVENT.state+3], EVENT_SIGNALED shr 24

        add     eax, SLOT_BASE+APP_EV_OFFSET

        xchg    eax, ebx

        jmp     RemoveEventTo

;-----------------------------------------------------------------------------

align 4

clear_event:                                       ;; EXPORT use

;info:

;

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;scratched: ebx,ecx

        call    NotDummyTest ; not returned for fail !!!

        add     eax, SLOT_BASE+APP_OBJ_OFFSET

        and     byte[ebx+EVENT.state+3], not((EVENT_SIGNALED+EVENT_WATCHED)shr 24)

        xchg    eax, ebx

        jmp     RemoveEventTo

;-----------------------------------------------------------------------------

align 4

send_event:                                        ;; EXPORT use

;info:

;   Ñîçäàåò íîâûé EVENT (âûòàñêèâàåò èç ñïèñêà FreeEvents) â ñïèñêå EventList

;   öåëåâîãî ñëîòà (eax=pid), ñ äàííûìè èç esi êîñâåííî, è state=EVENT_SIGNALED

;param:

;   eax - slots pid, to sending new event

;   esi - pointer to sending data (in code field of new event)

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;warning:

;   may be used as CDECL with such prefix...

;       mov     esi,[esp+8]

;       mov     eax,[esp+4]

;   but not as STDCALL :(

;scratched: ebx,ecx,esi,edi

        mov     edx, eax

        call    NotDummyTest.small ; not returned for fail !!!

        lea     ebx, [eax+SLOT_BASE+APP_EV_OFFSET]

        mov     ecx, EVENT_SIGNALED

        jmp     set_event

;-----------------------------------------------