Subversion Repositories Kolibri OS

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

;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2021. All rights reserved. ;;

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

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

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

$Revision: 8876 $

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    ; "virtual" event, only following field used:

                                     ;  FreeEvents.fd=event_start and 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 - previous event below

        mov     ecx, EV_SPACE        ; current - in allocated space

        mov     ebx, FreeEvents      ; previous - list beginning

        push    ebx                  ; it will be the end later

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

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                  ; here it became the end

        mov     [ebx+EVENT.fd], eax

        mov     [eax+EVENT.bk], ebx

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

align 4

.fail:

        ret

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

EVENT_WATCHED    = 0x10000000 ; bit 28

EVENT_SIGNALED   = 0x20000000 ; bit 29

MANUAL_RESET     = 0x40000000 ; bit 30

MANUAL_DESTROY   = 0x80000000 ; bit 31

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

align 4

create_event:                                      ;; EXPORT use

;info:

;   Move EVENT from the FreeEvents list to the ObjList list of the current slot;

;   EVENT.state is set from ecx, EVENT.code indirectly from esi (if 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:

;   We take a new event from FreeEvents, fill its fields from ecx, edx, esi

;   and add it to the list, which specified in ebx.

;   Return event (to eax), and it's uid (to 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     edx, [event_uid]

        mov     [eax+EVENT.id], edx

        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 - pointer to event, WHICH we will insert

;   ebx - pointer to event, AFTER which we will insert

;scratched: ebx,ecx

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

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

        cmp     eax, ecx             ; stop, I think...

        je      .break               ; - am I not a fool?

        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: ; somehow ugly...

        pop     edi

        pushfd

        cli

        call    pid_to_slot ; saved all registers (eax - retval)

        shl     eax, 8

        jz      RemoveEventTo.break ; POPF+RET

        jmp     edi ; normal return

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

align 4

raise_event:                                       ;; EXPORT use

;info:

;   Setting up EVENT.code data

;   If is has flag EVENT_SIGNALED activated - nothing else

;   Otherwise: activate this flag, except when the EVENT_WATCHED flag is present in edx

;   In this case EVENT_SIGNALED will activated only if EVENT_WATCHED presents in the event itself

;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:

;   Creates a new EVENT (pulls from the FreeEvents list) in the EventList list

;   of target slot (eax=pid), with data from esi indirectly, and 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

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

align 4

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

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

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

        jne     @f

        cmp     [eax+EVENT.id], ebx

        je      .ret

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

align 4

@@:

        pop     eax

        xor     eax, eax

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

align 4

.ret:

        ret

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

align 4

Wait_events:

        or      ebx, -1; infinite timeout

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

align 4

Wait_events_ex:

;info:

;   Waiting for an "abstract" event by moving the slot to the 5th position.

;   Abstractness lies in the fact, that the fact of an event is determined by the APPDATA.wait_test function,

;   which is set by the client and can be actually anything.

;   This allows the shed to reliably determine the fact of the event, and not make "idle" switches,

;   intended for showdowns like "friend / foe" within the problem.

;param:

;   edx - wait_test, client testing function (code address)

;   ecx - wait_param, additional parameter, possibly needed for [wait_test]

;   ebx - wait_timeout

;retval:

;   eax - call result [wait_test] (=0 => timeout)

;scratched: esi

        mov     esi, [current_slot]

        mov     [esi+APPDATA.wait_param], ecx

        pushad

        mov     ebx, esi  ;now this is a question, what where to put..........

        pushfd  ; this is a consequence of the general concept: let the test function have

        cli     ; the right to hope to disable interrupts, as when called from shed

        call    edx

        popfd

        mov     [esp+28], eax

        popad

        or      eax, eax

        jnz     @f   ;RET

        mov     [esi+APPDATA.wait_test], edx

        mov     [esi+APPDATA.wait_timeout], ebx

        mov     eax, [timer_ticks]

        mov     [esi+APPDATA.wait_begin], eax

        mov     eax, [TASK_BASE]

        mov     [eax+TASKDATA.state], TSTATE_WAITING

        call    change_task

        mov     eax, [esi+APPDATA.wait_param]

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

align 4

@@:

        ret

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

align 4

wait_event:                                        ;; EXPORT use

;info:

;   Waiting for the EVENT_SIGNALED flag in a very specific Event

;   (set, presumably, via raise_event)

;   When the MANUAL_RESET flag is active, nothing else

;   Otherwise: the flags EVENT_SIGNALED and EVENT_WATCHED for the received event are cleared,

;   and, if MANUAL_DESTROY is active, it moves to the ObjList list of the current slot,

;   and if not active, it is destroyed normally (destroy_event.internal)

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;scratched: ecx,edx,esi

        call    DummyTest

        mov     ecx, eax             ; wait_param

        mov     edx, get_event_alone ; wait_test

        call    Wait_events          ; timeout ignored

        jmp     wait_finish

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

align 4

wait_event_timeout:

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;   ecx - timeout in timer ticks

;retval:

;   eax - EVENT handle or 0 if timeout

        call    DummyTest

        mov     ebx, ecx

        mov     ecx, eax             ; wait_param

        mov     edx, get_event_alone ; wait_test

        call    Wait_events_ex

        test    eax, eax

        jnz     wait_finish

        ret

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

align 4

get_event_ex:                                      ;; f68:14

;info:

;   Waiting for any event in the EventList of the current slot

;   Code event data - copied to application memory (indirectly by edi)

;   When the MANUAL_RESET flag is active, nothing else

;   Otherwise: the flags EVENT_SIGNALED and EVENT_WATCHED for the received event are cleared,

;   and, if MANUAL_DESTROY is active, it moves to the ObjList list of the current slot,

;   and if not active, it is destroyed normally (destroy_event.internal)

;param:

;   edi - address in the application code to copy data from EVENT.code

;retval:

;   eax - EVENT itself (we will call it a handle)

;scratched: ebx,ecx,edx,esi,edi

        mov     edx, get_event_queue ; wait_test

        call    Wait_events          ; timeout ignored

        lea     esi, [eax+EVENT.code]

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

        cld

        rep movsd

        mov     byte[edi-(sizeof.EVENT-EVENT.code)+2], cl;clear priority field

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

align 4

wait_finish:

        test    byte[eax+EVENT.state+3], MANUAL_RESET shr 24

        jnz     get_event_queue.ret  ; RET

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

        test    byte[eax+EVENT.state+3], MANUAL_DESTROY shr 24

        jz      destroy_event.internal

        mov     ebx, [current_slot]

        add     ebx, APP_OBJ_OFFSET

        pushfd

        cli

        jmp     RemoveEventTo

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

align 4

destroy_event:                                     ;; EXPORT use

;info:

;   Move EVENT to the FreeEvents list, clear the magic, destroy, pid, id fields

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;retval:

;   eax - address of EVENT object (=0 => fail)

;scratched: ebx,ecx

        call    DummyTest ; not returned for fail !!!

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

align 4

.internal:

        xor     ecx, ecx  ; clear common header

        pushfd

        cli

        mov     [eax+EVENT.magic], ecx

        mov     [eax+EVENT.destroy], ecx

        mov     [eax+EVENT.pid], ecx

        mov     [eax+EVENT.id], ecx

        mov     ebx, FreeEvents

        jmp     RemoveEventTo

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

align 4

get_event_queue:

;info:

;   client testing function for get_event_ex

;warning:

;  -don't use [TASK_BASE],[current_slot],[current_slot_idx] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - APPDATA address of testing slot

;retval:

;   eax - address of EVENT object (=0 => fail)

        add     ebx, APP_EV_OFFSET

        mov     eax, [ebx+APPOBJ.bk] ; we choose from the end, according to the FIFO principle

        cmp     eax, ebx ; empty ???

        je      get_event_alone.ret0

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

align 4

.ret:

        ret

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

align 4

get_event_alone:

;info:

;   client testing function for wait_event

;warning:

;  -don't use [TASK_BASE],[current_slot],[current_slot_idx] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - APPDATA address of testing slot

;retval:

;   eax - address of EVENT object (=0 => fail)

        mov     eax, [ebx+APPDATA.wait_param]

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

        jnz     .ret

        or      byte[eax+EVENT.state+3], EVENT_WATCHED shr 24

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

align 4

.ret0:

        xor     eax, eax; NO event!!!

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

align 4

.ret:

        ret

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

align 4

sys_sendwindowmsg:                                 ;; f72

        dec     ebx

        jnz     .ret ;subfunction==1 ?

        pushfd

        cli

        sub     ecx, 2

        je      .sendkey

        dec     ecx

        jnz     .retf

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

align 4

.sendbtn:

        cmp     byte[BTN_COUNT], 1

        jae     .result ;overflow

        inc     byte[BTN_COUNT]

        shl     edx, 8

        mov     [BTN_BUFF], edx

        jmp     .result

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

align 4

.sendkey:

        movzx   eax, byte[KEY_COUNT]

        cmp     al, 120

        jae     .result ;overflow

        inc     byte[KEY_COUNT]

        mov     [KEY_BUFF+eax], dl

; store empty scancode

        add     eax, 120+2

        mov     [KEY_BUFF+eax], byte 0

        sub     eax, 120+2

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

align 4

.result:

        setae   byte[esp+32+4] ;we consider that initially was: dword[esp+32+4]==72

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

align 4

.retf:

        popfd

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

align 4

.ret:

        ret

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

align 4

sys_getevent:                                      ;; f11

        mov     ebx, [current_slot]  ;now this is a question, what where to put......

        pushfd  ; this is a consequence of the general concept: let the test function have

        cli     ; the right to hope to disable interrupts, as when called from shed

        call    get_event_for_app

        popfd

        mov     [esp+32], eax

        ret

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

align 4

sys_waitforevent:                                  ;; f10

        or      ebx, -1; infinite timeout

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

align 4

sys_wait_event_timeout:                            ;; f23

        call    unprotect_from_terminate

        mov     edx, get_event_for_app; wait_test

        call    Wait_events_ex        ; ebx - timeout

        mov     [esp+32], eax

        call    protect_from_terminate

        ret

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

align 4

get_event_for_app:                                 ;; used from f10,f11,f23

;info:

;   client testing function for applications (f10,f23)

;warning:

;  -don't use [TASK_BASE],[current_slot],[current_slot_idx] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - APPDATA address of testing slot

;retval:

;   eax - event number (=0 => no events)

        movzx   edi, bh               ; bh  is assumed as [current_slot_idx]

        shl     edi, 5

        add     edi, TASK_TABLE     ; edi is assumed as [TASK_BASE]

        mov     ecx, [edi+TASKDATA.event_mask]

        and     ecx, 0x7FFFFFFF

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

align 4

.loop: ; until we run out all the bits of the mask

        bsr     eax, ecx       ; find a non-zero bit of the mask (31 -> 0)

        jz      .no_events     ; ran out all the bits of the mask but found nothing ???

        btr     ecx, eax       ; clear the current checking bit of the mask

       ; go to the handler of this (eax) bit

        cmp     eax, 10

        jae     .loop          ; eax=[10..31], ignored (event 11...32)

        cmp     eax, 3

        je      .loop          ; eax=3, ignored (event 4)

        cmp     eax, 4

        je      .FlagAutoReset  ; eax=4, retvals=eax+1 (event 5)

        cmp     eax, 5

        je      .mouse_check  ; eax=5, retvals=eax+1 (event 6)

        ja      .FlagAutoReset ; eax=[6..9], retvals=eax+1 (event 7...10)

        cmp     eax, 1

        jae     .BtKy          ; eax=[1,2],  retvals=eax+1 (event 2,3)

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

align 4

.WndRedraw:                    ; eax=0, retval WndRedraw=1

        cmp     [edi-twdw+WDATA.fl_redraw], al;al==0

        jne     .result

        jmp     .loop

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

align 4

.no_events:

        xor     eax, eax

        ret

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

align 4

.mouse_check:    ; Mouse 5+1=6

        push    eax

        mov     eax, [TASK_BASE]

        mov     eax, [eax + TASKDATA.event_mask]

        test    eax, 0x80000000 ; bit 31: active/inactive filter f.40

        jz      @f

        pop     eax

        jmp     .FlagAutoReset

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

align 4

@@:

; If the window is captured and moved by the user, then no mouse events!!!

        mov     al, [mouse.active_sys_window.action]

        and     al, WINDOW_MOVE_AND_RESIZE_FLAGS

        test    al, al

        pop     eax

        jnz     .loop

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

align 4

.FlagAutoReset: ; retvals: BgrRedraw=5, IPC=7, Stack=8, Debug=9

        btr     [ebx+APPDATA.occurred_events], eax

        jnc     .loop

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

align 4

.result:      ; retval = eax+1

        inc     eax

        ret

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

align 4

.BtKy:

        movzx   edx, bh

        movzx   edx, word[WIN_STACK+edx*2]

        je      .Keys          ; eax=1, retval Keys=2

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

align 4

.Buttons:                      ; eax=2, retval Buttons=3

        cmp     byte[BTN_COUNT], 0

        je      .loop          ; empty ???

        cmp     edx, [thread_count]

        jne     .loop          ; not Top ???

        mov     edx, [BTN_BUFF]

        shr     edx, 8

        cmp     edx, 0xFFFF    ;-ID for Minimize-Button of Form

        jne     .result

        mov     [window_minimize], 1

        call    wakeup_osloop

        dec     byte[BTN_COUNT]

        jmp     .loop

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

align 4

.Keys:    ; eax==1

        cmp     edx, [thread_count]

        jne     @f             ; not Top ???

        cmp     [KEY_COUNT], al; al==1

        jae     .result        ; not empty ???

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

align 4

@@:

        mov     edx, hotkey_buffer

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

align 4

@@:

        cmp     [edx], bh      ; bh - slot for testing

        je      .result

        add     edx, 8

        cmp     edx, hotkey_buffer+120*8

        jb      @b

        jmp     .loop

;end.

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