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x_kbd.H

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/*
 * Copyright 1997, Brown University, Providence, RI.
 * 
 *                         All Rights Reserved
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose other than its incorporation into a
 * commercial product is hereby granted without fee, provided that the
 * above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Brown University not be used in
 * advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.
 * 
 * BROWN UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY
 * PARTICULAR PURPOSE.  IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE FOR
 * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#ifndef DEV_X_KBD_H
#define DEV_X_KBD_H 

#include "dev/kbd.H"
#include "std/strings.H"
#include <string.h>
#include <X11/keysym.h>  // For Keycodes
#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>
#include <X11/Xatom.h>

//----------------------------------------------
//
//  X_kbd -
//     An X windows keyboard device
//
//----------------------------------------------
class X_kbd : public DEVice_kbd {
 protected :
  static void key(Widget w,XtPointer client_data,XEvent *xevent,Boolean *) {
      XKeyEvent  *kev((XKeyEvent *)xevent);
      X_kbd      *kbd((X_kbd     *)client_data);
      char        buffer[1024], number;
      KeySym      keysym;

      if ((number = XLookupString(kev, buffer, 1024, &keysym, 0))) {
     if (keysym  == XK_Return || keysym == XK_Linefeed)
        buffer[number-1] = '\n';
     buffer[number] = '\0';
         kbd->send_event(buffer[0], EVENTkbd::DOWN, kev->x, kev->y);
      } else if (keysym == XK_Shift_R || keysym == XK_Shift_L)
         kbd->send_event((char) EVENTkbd::SHIFT, EVENTkbd::DOWN, kev->x,kev->y);
      else if (keysym == XK_Control_R || keysym == XK_Control_L)
         kbd->send_event((char) EVENTkbd::CTRL, EVENTkbd::DOWN, kev->x, kev->y);
   }
  static void key_up(Widget w,XtPointer client_data,XEvent *xevent,Boolean *) {
   XKeyEvent  *kev((XKeyEvent *)xevent);
   X_kbd      *kbd((X_kbd     *)client_data);
   char        buffer[1024], number;
   KeySym      keysym;

   if ((number = XLookupString(kev, buffer, 1024, &keysym, 0))) { 
       if (keysym  == XK_Return || keysym == XK_Linefeed)
          buffer[number-1] = '\n';
       buffer[number] = '\0';
       kbd->send_event(buffer[0], EVENTkbd::UP, kev->x, kev->y);
   } else if (keysym == XK_Shift_R || keysym == XK_Shift_L)
       kbd->send_event((char) EVENTkbd::SHIFT, EVENTkbd::UP, kev->x, kev->y);
   else if (keysym == XK_Control_R || keysym == XK_Control_L)
       kbd->send_event((char) EVENTkbd::CTRL, EVENTkbd::UP, kev->x, kev->y);
  }

  virtual void send_event(char key, EVENTkbd::trans t, int, int){ event(key,t);}
  Widget _widg;

   public:
     X_kbd(Widget w, Cstr_ptr &n="kbd"):DEVice_kbd(n),_widg(w) {
       XtAddEventHandler(w, KeyPressMask,   (Boolean)0, key,   (void *)this);
       XtAddEventHandler(w, KeyReleaseMask, (Boolean)0, key_up,(void *)this);
     }
};
#endif

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