/*** $Id: event.c,v 1.34 2003/11/21 12:44:01 weiym Exp $**** event.c: Low level event handling module.**** Copyright (C) 2003 Feynman Software.** Copyright (C) 1999 ~ 2002 Wei Yongming.**** Current maintainer: Wei Yongming.**** Create date: 1999.01.11*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*//*** TODO:*/ #include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/time.h>#ifdef HAVE_LINUX_KEYBOARD_H  #include <linux/keyboard.h>#endif    #include "common.h"#include "minigui.h"#include "gdi.h"#include "window.h"#include "cliprect.h"#include "internals.h"#include "ial.h"#include "cursor.h"#include "event.h"#include "misc.h"#if defined(_LITE_VERSION) && !defined(_STAND_ALONE)#include "sharedres.h"#endifstruct timeval __mg_event_timeout;static int timeoutusec;static int repeatusec;static int dblclicktime;#ifdef _LITE_VERSIONstatic unsigned int timeout_threshold;static unsigned int repeat_threshold;static unsigned int timeout_count;#endifstatic void GetDblclickTime(void){    char szValue[11];    int ms;    dblclicktime = DEF_MSEC_DBLCLICK / 10;    if( GetMgEtcValue (MOUSEPARA, MOUSEPARA_DBLCLICKTIME, szValue, 10) < 0 )        return;    ms = atoi(szValue);    if (ms > 0 && ms < 1000) {        dblclicktime = ms / 10;    }}static void GetTimeout (void){    char szValue [11];    int mytimeoutusec, myrepeatusec;    timeoutusec = DEF_USEC_TIMEOUT;    repeatusec = DEF_REPEAT_TIME;    if (GetMgEtcValue (EVENTPARA, EVENTPARA_REPEATUSEC, szValue, 10) < 0)        return;    myrepeatusec = atoi(szValue);    if( GetMgEtcValue (EVENTPARA, EVENTPARA_TIMEOUTUSEC, szValue, 10) < 0 )        return;    mytimeoutusec = atoi(szValue);    if (myrepeatusec >= 0 && mytimeoutusec > 0) {        timeoutusec = mytimeoutusec;        repeatusec = myrepeatusec;    }}// Mouse event parameters.static int oldbutton = 0;static unsigned int time1;static unsigned int time2;// Key event parameters.static unsigned char oldkeystate [MGUI_NR_KEYS + 1];static unsigned char olddownkey = 0;static DWORD status;static int alt1 = 0;               /* left alt key state */static int alt2 = 0;               /* right alt key state */static int capslock = 0;           /* caps lock key state */static int esc = 0;                /* escape scan code detected? */static int caps_off = 1;           /* 1 = normal position, 0 = depressed */static int numlock = 0;            /* number lock key state */static int num_off = 1;            /* 1 = normal position, 0 = depressed */static int slock = 0;              /* scroll lock key state */static int slock_off = 1;          /* 1 = normal position, 0 = depressed */static int control1 = 0;           /* left control key state */static int control2 = 0;           /* right control key state */static int shift1 = 0;             /* left shift key state */static int shift2 = 0;             /* left shift key state */static void ResetMouseEvent(void){#if 0    IAL_UpdateMouse ();    oldbutton = IAL_GetMouseButton ();#else    oldbutton = 0;#endif    time1 = 0;    time2 = 0;}static void ResetKeyEvent(void){#if 0    memcpy (oldkeystate, IAL_GetKeyboardState (), IAL_UpdateKeyboard ());#else    memset (oldkeystate, 0, MGUI_NR_KEYS + 1);#endif    olddownkey  = 0;    status      = 0;    alt1        = 0;    alt2        = 0;    esc         = 0;    control1    = 0;    control2    = 0;    shift1      = 0;    shift2      = 0;    capslock    = 0;    caps_off    = 1;    numlock     = 0;    num_off     = 1;    slock       = 0;    slock_off   = 1;    IAL_SetLeds (slock | (numlock << 1) | (capslock << 2));    __mg_event_timeout.tv_sec = 0;    __mg_event_timeout.tv_usec = timeoutusec;#ifdef _LITE_VERSION#ifndef _STAND_ALONE    SHAREDRES_TIMEOUT = __mg_event_timeout;    SHAREDRES_SHIFTSTATUS = status;#endif    timeout_threshold = timeoutusec / 10000;    repeat_threshold = repeatusec / 10000;    timeout_count = timeout_threshold;#endif}#ifdef _LITE_VERSIONBOOL GetLWEvent (int event, PLWEVENT lwe){    static LWEVENT old_lwe = {0, 0};    unsigned int interval;    int button;    PMOUSEEVENT me = &(lwe->data.me);    PKEYEVENT ke = &(lwe->data.ke);    const unsigned char* keystate;    int i;    int make;       /* 0 = release, 1 = presse */    if (event == 0) {        if (__mg_timer_counter >= timeout_count) {            timeout_count = __mg_timer_counter + repeat_threshold;            // repeat last event            if (old_lwe.type == LWETYPE_KEY                     && old_lwe.data.ke.event == KE_KEYDOWN) {                memcpy (lwe, &old_lwe, sizeof (LWEVENT));                lwe->data.ke.status |= KE_REPEATED;                return 1;            }            if (!(old_lwe.type == LWETYPE_MOUSE                    && (old_lwe.data.me.event == ME_LEFTDOWN ||                        old_lwe.data.me.event == ME_RIGHTDOWN ||                        old_lwe.data.me.event == ME_MIDDLEDOWN))) {                // reset delay time                timeout_count = __mg_timer_counter + timeout_threshold;            }            // reset delay time            lwe->type = LWETYPE_TIMEOUT;            lwe->count = __mg_timer_counter;            return 1;        }        return 0;    }    timeout_count = __mg_timer_counter + timeout_threshold;    // There was a event occurred.    if (event & IAL_MOUSEEVENT) {        if (!IAL_UpdateMouse ())            return 0;        lwe->type = LWETYPE_MOUSE;        if (RefreshCursor(&me->x, &me->y, &button)) {            me->event = ME_MOVED;            time1 = 0;            time2 = 0;            if (oldbutton == button)                return 1;        }           if ( !(oldbutton & IAL_MOUSE_LEFTBUTTON) &&               (button & IAL_MOUSE_LEFTBUTTON) )        {            if (time1) {                interval = __mg_timer_counter - time1;                if (interval <= dblclicktime)                    me->event = ME_LEFTDBLCLICK;                else                    me->event = ME_LEFTDOWN;                time1 = 0;            }            else {                time1 = __mg_timer_counter;                me->event = ME_LEFTDOWN;            }            goto mouseret;        }        if ( (oldbutton & IAL_MOUSE_LEFTBUTTON) &&              !(button & IAL_MOUSE_LEFTBUTTON) )        {            me->event = ME_LEFTUP;            goto mouseret;        }        if ( !(oldbutton & IAL_MOUSE_RIGHTBUTTON) &&               (button & IAL_MOUSE_RIGHTBUTTON) )        {            if (time2) {                interval = __mg_timer_counter - time2;                if (interval <= dblclicktime)                    me->event = ME_RIGHTDBLCLICK;                else                    me->event = ME_RIGHTDOWN;                time2 = 0;            }            else {                time2 = __mg_timer_counter;                me->event = ME_RIGHTDOWN;            }            goto mouseret;        }        if ( (oldbutton & IAL_MOUSE_RIGHTBUTTON) &&             !(button & IAL_MOUSE_RIGHTBUTTON) )        {            me->event = ME_RIGHTUP;            goto mouseret;        }    }    if (event & IAL_KEYEVENT) {        int nr_keys = IAL_UpdateKeyboard ();        if (nr_keys == 0)            return 0;        lwe->type = LWETYPE_KEY;        keystate = IAL_GetKeyboardState ();        for(i = 0; i < nr_keys; i++) {            if (!oldkeystate[i] && keystate[i]) {                 ke->event = KE_KEYDOWN;                 ke->scancode = i;                 olddownkey = i;                 break;            }            if (oldkeystate[i] && !keystate[i]) {                 ke->event = KE_KEYUP;                 ke->scancode = i;                 break;            }        }        if (i == nr_keys) {            ke->event = KE_KEYDOWN;            ke->scancode = olddownkey;        }                make = (ke->event == KE_KEYDOWN)?1:0;        if (i != nr_keys) {            unsigned leds;            switch (ke->scancode) {                case SCANCODE_CAPSLOCK:                    if (make && caps_off) {                        capslock = 1 - capslock;                        leds = slock | (numlock << 1) | (capslock << 2);                        IAL_SetLeds (leds);                        status = (DWORD)leds << 16;                    }                    caps_off = 1 - make;                break;                                    case SCANCODE_NUMLOCK:                    if (make && num_off) {                        numlock = 1 - numlock;                        leds = slock | (numlock << 1) | (capslock << 2);                        IAL_SetLeds (leds);                        status = (DWORD)leds << 16;                    }                    num_off = 1 - make;                break;                                case SCANCODE_SCROLLLOCK:                    if (make & slock_off) {                        slock = 1 - slock;                        leds = slock | (numlock << 1) | (capslock << 2);                        IAL_SetLeds (leds);                        status = (DWORD)leds << 16;                    }                    slock_off = 1 - make;                    break;                case SCANCODE_LEFTCONTROL:                    control1 = make;                    break;                                    case SCANCODE_RIGHTCONTROL:                    control2 = make;                    break;                                    case SCANCODE_LEFTSHIFT: