/*** $Id: native.c,v 1.53 2004/05/22 02:16:04 panweiguo Exp $**** native.c: Native IAL engine**** Copyright (C) 2003 Feynman Software.** Copyright (C) 2000 ~ 2002 Song Lixin and Wei Yongming.**** Created by Song Lixin at 2000/10/17** Clean code for MiniGUI 1.1.x by Wei Yongming, 20001/09/18*//*** 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*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/ioctl.h>#include <signal.h>#include <linux/kd.h>#include <linux/keyboard.h>#include "common.h"#include "minigui.h"#include "misc.h"#include "ial.h"#include "gal.h"#include "native.h"static int mouse_fd;static int kbd_fd;static int    xpos;        /* current x position of mouse */static int    ypos;        /* current y position of mouse */static int    minx;        /* minimum allowed x position */static int    maxx;        /* maximum allowed x position */static int    miny;        /* minimum allowed y position */static int    maxy;        /* maximum allowed y position */static int    buttons;     /* current state of buttons */static int    scale;       /* acceleration scale factor */static int    thresh;      /* acceleration threshhold */static MOUSEDEVICE * mousedev;static unsigned char state [NR_KEYS];static KBDDEVICE * kbddev = &kbddev_tty;/************************  Low Level Input Operations **********************//* * Mouse operations -- Event */static int mouse_update(void){    int dx,dy,dz;    int r;    int sign;        if (!mousedev)        return 0;    dx = dy = 0;    r = mousedev->Read(&dx, &dy, &dz, &buttons);    if (r <= 0)        return 0;    sign = 1;    if (dx < 0) {        sign = -1;        dx = -dx;    }    if (dx > thresh)        dx = thresh + (dx - thresh) * scale;    dx *= sign;    xpos += dx;    if( xpos < minx )        xpos = minx;    if( xpos > maxx )        xpos = maxx;    sign = 1;    if (dy < 0) {        sign = -1;        dy = -dy;    }    if (dy > thresh)        dy = thresh + (dy - thresh) * scale;    dy *= sign;    ypos += dy;    if ( ypos < miny )        ypos = miny;    if ( ypos > maxy )        ypos = maxy;    return 1;}static void mouse_getxy (int* x, int* y){    *x = xpos;    *y = ypos;}static void mouse_setposition (int newx, int newy){    if (newx < minx)        newx = minx;    if (newx > maxx)        newx = maxx;    if (newy < miny)        newy = miny;    if (newy > maxy)        newy = maxy;    if (newx == xpos && newy == ypos)        return;    xpos = newx;    ypos = newy;}static int mouse_getbutton (void){    return buttons;}static void mouse_setrange (int newminx, int newminy, int newmaxx, int newmaxy){    minx = newminx;    miny = newminy;    maxx = newmaxx;    maxy = newmaxy;    mouse_setposition ((newminx + newmaxx) / 2, (newminy + newmaxy) / 2);}static void mouse_suspend(void){    if (mousedev) {        mousedev->Suspend();        mouse_fd = -1;    }}static int mouse_resume(void){    if (mousedev) {        mouse_fd = mousedev->Resume();        if (mouse_fd < 0) {            fprintf (stderr, "IAL Native Engine: Can not open mouse!\n");        }    }    return mouse_fd;}/* * 0 : no data * > 0 : the possible maximal key scancode */static int keyboard_update(void){    unsigned char buf;    int modifier;    int ch;    int is_pressed;    int retvalue;    retvalue = kbddev->Read (&buf, &modifier);     if ((retvalue == -1) || (retvalue == 0))        return 0;    else { /* retvalue > 0 */        is_pressed = !(buf & 0x80);        ch         = buf & 0x7f;        if (is_pressed) {#ifdef _LITE_VERSION            if ((ch >= SCANCODE_F1) && (ch <= SCANCODE_F6) &&                             (state[SCANCODE_RIGHTCONTROL]==1))             {                vtswitch_try (ch - SCANCODE_F1 + 1);                state [SCANCODE_RIGHTCONTROL] = 0;                return 0;            }#endif            state[ch] = 1;        }        else             state[ch] = 0;    }    return NR_KEYS;}static const char* keyboard_getstate(void){    return state;}static void keyboard_suspend(void){    kbddev->Suspend();        kbd_fd = -1;}static int keyboard_resume(void){    memset(state, 0, NR_KEYS);    kbd_fd = kbddev->Resume ();    if (kbd_fd < 0) {        fprintf (stderr, "IAL Native Engine: Can not open keyboard!\n");    }    return kbd_fd;}/* NOTE by weiym: Do not ignore the fd_set in, out, and except */#ifdef _LITE_VERSIONstatic int wait_event (int which, int maxfd, fd_set *in, fd_set *out, fd_set *except,                struct timeval *timeout)#elsestatic int wait_event (int which, fd_set *in, fd_set *out, fd_set *except,                struct timeval *timeout)#endif{    fd_set    rfds;    int    retvalue = 0;    int    fd, e;    if (!in) {        in = &rfds;        FD_ZERO (in);    }    if (which & IAL_MOUSEEVENT && mouse_fd >= 0) {        fd = mouse_fd;          /* FIXME: mouse fd may be changed in vt switch! */        FD_SET (fd, in);#ifdef _LITE_VERSION        if (fd > maxfd) maxfd = fd;#endif    }    if (which & IAL_KEYEVENT && kbd_fd >= 0){        fd = kbd_fd;          /* FIXME: keyboard fd may be changed in vt switch! */        FD_SET (kbd_fd, in);#ifdef _LITE_VERSION        if (fd > maxfd) maxfd = fd;#endif    }    /* FIXME: pass the real set size */#ifdef _LITE_VERSION    e = select (maxfd + 1, in, out, except, timeout) ;#else    e = select (MAX (mouse_fd, kbd_fd) + 1, in, out, except, timeout) ;#endif    if (e > 0) {         fd = mouse_fd;        /* If data is present on the mouse fd, service it: */        if (fd >= 0 && FD_ISSET (fd, in)) {            FD_CLR (fd, in);            retvalue |= IAL_MOUSEEVENT;        }        fd = kbd_fd;        /* If data is present on the keyboard fd, service it: */        if (fd >= 0 && FD_ISSET (fd, in)) {            FD_CLR (fd, in);            retvalue |= IAL_KEYEVENT;        }    } else if (e < 0) {        return -1;    }    return retvalue;}static void set_leds (unsigned int leds){    ioctl (0, KDSETLED, leds);}BOOL InitNativeInput (INPUT* input, const char* mdev, const char* mtype){    kbd_fd = kbddev->Open();        if (kbd_fd < 0) {        perror ("IAL Native Engine");        return FALSE;    }        if (strcasecmp (mtype, "none") == 0) {        mousedev = NULL;        goto found;    }#ifdef _IMPS2_SUPPORT    if (strcasecmp (mtype, "imps2") == 0 ) {        mousedev = &mousedev_IMPS2;        goto found;    }#endif#ifdef _PS2_SUPPORT    if (strcasecmp (mtype, "ps2") == 0 ) {        mousedev = &mousedev_PS2;        goto found;    }#endif#ifdef _GPM_SUPPORT    if (strcasecmp (mtype, "gpm") == 0) {        mousedev = &mousedev_GPM;        goto found;    }#endif#ifdef _MS_SUPPORT    if (strcasecmp (mtype, "ms") == 0) {        mousedev = &mousedev_MS;        goto found;    }#endif#ifdef _MS3_SUPPORT    if (strcasecmp (mtype, "ms3") == 0) {        mousedev = &mousedev_MS3;        goto found;    }#endif    fprintf (stderr, "IAL Native Engine: Can not init pointing device!\n");    return FALSE;found:    if (mousedev) {        mouse_fd = mousedev->Open(mdev);        if (mouse_fd <0) {            fprintf (stderr, "IAL Native Engine: Can not init mouse!\n");            kbddev->Close();            return FALSE;        }    }    else        mouse_fd = -1;    xpos = 0;    ypos = 0;    buttons = 0;    minx = 0;    miny = 0;/*    maxx = WIDTHOFPHYGC - 1;    maxy = HEIGHTOFPHYGC - 1;*/    maxx = WIDTHOFPHYSCREEN;    maxy = HEIGHTOFPHYSCREEN;    if (mousedev)        mousedev->GetDefaultAccel (&scale, &thresh);    input->update_mouse = mouse_update;    input->get_mouse_xy = mouse_getxy;    input->set_mouse_xy = mouse_setposition;    input->get_mouse_button = mouse_getbutton;    input->set_mouse_range = mouse_setrange;    input->suspend_mouse= mouse_suspend;    input->resume_mouse = mouse_resume;    input->update_keyboard = keyboard_update;    input->get_keyboard_state = keyboard_getstate;    input->suspend_keyboard = keyboard_suspend;    input->resume_keyboard = keyboard_resume;    input->set_leds = set_leds;    input->wait_event = wait_event;    #ifdef _LITE_VERSION#ifndef _STAND_ALONE    if (mgIsServer)#endif        init_vtswitch (kbd_fd);#endif    return TRUE;}void TermNativeInput (void){#ifdef _LITE_VERSION#ifndef _STAND_ALONE    if (mgIsServer)#endif        done_vtswitch (kbd_fd);#endif    if (mousedev)        mousedev->Close();    kbddev->Close();}