/*
 *	$XConsortium: input.c,v 1.18 94/05/14 15:53:34 gildea Exp $
 */

/*
 * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
 *
 *                         All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted,
 * 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 Digital Equipment
 * Corporation not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior permission.
 *
 *
 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
 * DIGITAL 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.
 */

/* input.c */

#include "ptyx.h"		/* gets Xt headers, too */
#include <X11/keysym.h>
#include <X11/DECkeysym.h>
#include <X11/Xutil.h>
#include <stdio.h>

/* The following are from X11R6 and allow some R6 code to be used below. */
#ifndef XK_KP_Home
#define XK_KP_Home              0xFF95
#define XK_KP_Left              0xFF96
#define XK_KP_Up                0xFF97
#define XK_KP_Right             0xFF98
#define XK_KP_Down              0xFF99
#define XK_KP_Prior             0xFF9A
#define XK_KP_Page_Up           0xFF9A
#define XK_KP_Next              0xFF9B
#define XK_KP_Page_Down         0xFF9B
#define XK_KP_End               0xFF9C
#define XK_KP_Begin             0xFF9D
#define XK_KP_Insert            0xFF9E
#define XK_KP_Delete            0xFF9F
#endif

static XComposeStatus compose_status = {NULL, 0};
static char *kypd_num =
    " XXXXXXXX\tXXX\rXXXxxxxXXXXXXXXXXXXXXXXXXXXX*+,-./0123456789XXX=";
static char *kypd_apl =
    " ABCDEFGHIJKLMNOPQRSTUVWXYZ??????abcdefghijklmnopqrstuvwxyzXXX";
static char *cur = "DACB";

static int funcvalue(), sunfuncvalue();
extern Boolean sunFunctionKeys;

static void
AdjustAfterInput (screen)
register TScreen *screen;
{
	if(screen->scrollkey && screen->topline != 0)
		WindowScroll(screen, 0);
	if(screen->marginbell) {
		int col = screen->max_col - screen->nmarginbell;
		if(screen->bellarmed >= 0) {
			if(screen->bellarmed == screen->cur_row) {
			    if(screen->cur_col >= col) {
				Bell();
				screen->bellarmed = -1;
			    }
			} else
			    screen->bellarmed =
				screen->cur_col < col ? screen->cur_row : -1;
		} else if(screen->cur_col < col)
			screen->bellarmed = screen->cur_row;
	}
}

void
Input (keyboard, screen, event, eightbit)
    register TKeyboard	*keyboard;
    register TScreen	*screen;
    register XKeyEvent *event;
    Bool eightbit;
{

#ifdef I18N
#define STRBUFSIZE 500
#else
#define STRBUFSIZE 100
#endif

	char strbuf[STRBUFSIZE];
	register char *string;
	register int key = FALSE;
	int	pty	= screen->respond;
	int	nbytes;
	KeySym  keysym = 0;
	ANSI	reply;
#ifdef I18N
        Status  status_return;
#endif

#ifdef I18N
        if (screen->xic)
            nbytes = XmbLookupString (screen->xic, event, strbuf, STRBUFSIZE,
                                      &keysym, &status_return);
        else
            nbytes = XLookupString (event, strbuf, STRBUFSIZE,
                                    &keysym, &compose_status);
#else
	nbytes = XLookupString (event, strbuf, STRBUFSIZE,
				&keysym, &compose_status);
#endif

	string = &strbuf[0];
	reply.a_pintro = 0;
	reply.a_final = 0;
	reply.a_nparam = 0;
	reply.a_inters = 0;

	if (keysym >= XK_KP_Home && keysym <= XK_KP_Begin) {
	    keysym += XK_Home - XK_KP_Home;
	}

	if (IsPFKey(keysym)) {
		reply.a_type = SS3;
		unparseseq(&reply, pty);
		unparseputc((char)(keysym-XK_KP_F1+'P'), pty);
		key = TRUE;
        } else if (IsCursorKey(keysym) &&
        	keysym != XK_Prior && keysym != XK_Next) {
       		if (keyboard->flags & CURSOR_APL) {
			reply.a_type = SS3;
			unparseseq(&reply, pty);
			unparseputc(cur[keysym-XK_Left], pty);
		} else {
			reply.a_type = CSI;
			reply.a_final = cur[keysym-XK_Left];
			unparseseq(&reply, pty);
		}
		key = TRUE;
	 } else if (IsFunctionKey(keysym) || IsMiscFunctionKey(keysym) ||
	 	keysym == XK_Prior || keysym == XK_Next ||
	 	keysym == DXK_Remove || keysym == XK_KP_Delete ||
		keysym == XK_KP_Insert) {
		reply.a_type = CSI;
		reply.a_nparam = 1;
		if (sunFunctionKeys) {
		    reply.a_param[0] = sunfuncvalue (keysym);
		    reply.a_final = 'z';
		} else {
		    reply.a_param[0] = funcvalue (keysym);
		    reply.a_final = '~';
		}
		if (reply.a_param[0] > 0)
			unparseseq(&reply, pty);
		key = TRUE;
	} else if (IsKeypadKey(keysym)) {
	  	if (keyboard->flags & KYPD_APL)	{
			reply.a_type   = SS3;
			unparseseq(&reply, pty);
			unparseputc(kypd_apl[keysym-XK_KP_Space], pty);
		} else
			unparseputc(kypd_num[keysym-XK_KP_Space], pty);
		key = TRUE;
	} else if (nbytes > 0) {
		if ((nbytes == 1) && eightbit) {
		    if (screen->input_eight_bits)
		      *string |= 0x80;	/* turn on eighth bit */
		    else
		      unparseputc (033, pty);  /* escape */
		}
		while (nbytes-- > 0)
			unparseputc(*string++, pty);
		key = TRUE;
	}
	if (key)
	        AdjustAfterInput(screen);
	return;
}

StringInput (screen, string, nbytes)
    register TScreen	*screen;
    register char *string;
    int nbytes;
{
	int	pty	= screen->respond;

	while (nbytes-- > 0)
		unparseputc(*string++, pty);
	AdjustAfterInput(screen);
}

static int funcvalue (keycode)
	int keycode;
{
	switch (keycode) {
		case XK_F1:	return(11);
		case XK_F2:	return(12);
		case XK_F3:	return(13);
		case XK_F4:	return(14);
		case XK_F5:	return(15);
		case XK_F6:	return(17);
		case XK_F7:	return(18);
		case XK_F8:	return(19);
		case XK_F9:	return(20);
		case XK_F10:	return(21);
		case XK_F11:	return(23);
		case XK_F12:	return(24);
		case XK_F13:	return(25);
		case XK_F14:	return(26);
		case XK_F15:	return(28);
		case XK_Help:	return(28);
		case XK_F16:	return(29);
		case XK_Menu:	return(29);
		case XK_F17:	return(31);
		case XK_F18:	return(32);
		case XK_F19:	return(33);
		case XK_F20:	return(34);

		case XK_Find :	return(1);
		case XK_Insert:	return(2);
		case XK_KP_Insert: return(2);
		case XK_Delete:	return(3);
		case XK_KP_Delete: return(3);
		case DXK_Remove: return(3);
		case XK_Select:	return(4);
		case XK_Prior:	return(5);
		case XK_Next:	return(6);
		default:	return(-1);
	}
}


static int sunfuncvalue (keycode)
	int keycode;
  {
  	switch (keycode) {
		case XK_F1:	return(224);
		case XK_F2:	return(225);
		case XK_F3:	return(226);
		case XK_F4:	return(227);
		case XK_F5:	return(228);
		case XK_F6:	return(229);
		case XK_F7:	return(230);
		case XK_F8:	return(231);
		case XK_F9:	return(232);
		case XK_F10:	return(233);
		case XK_F11:	return(192);
		case XK_F12:	return(193);
		case XK_F13:	return(194);
		case XK_F14:	return(195);
		case XK_F15:	return(196);
		case XK_Help:	return(196);
		case XK_F16:	return(197);
		case XK_Menu:	return(197);
		case XK_F17:	return(198);
		case XK_F18:	return(199);
		case XK_F19:	return(200);
		case XK_F20:	return(201);

		case XK_R1:	return(208);
		case XK_R2:	return(209);
		case XK_R3:	return(210);
		case XK_R4:	return(211);
		case XK_R5:	return(212);
		case XK_R6:	return(213);
		case XK_R7:	return(214);
		case XK_R8:	return(215);
		case XK_R9:	return(216);
		case XK_R10:	return(217);
		case XK_R11:	return(218);
		case XK_R12:	return(219);
		case XK_R13:	return(220);
		case XK_R14:	return(221);
		case XK_R15:	return(222);
  
		case XK_Find :	return(1);
		case XK_Insert:	return(2);
		case XK_KP_Insert: return(2);
		case XK_Delete:	return(3);
		case XK_KP_Delete: return(3);
		case DXK_Remove: return(3);
		case XK_Select:	return(4);
		case XK_Prior:	return(5);
		case XK_Next:	return(6);
		default:	return(-1);
	}
}
