xim.c

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/* xim.c - XIM handlers, for multiple locale input methods.
   Copyright (C) 1996-2000 Paul Sheer

   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.
 */

/* #define DEBUG */
/* #define DEBUG_ENTRY */

#include <config.h>
#include <stdio.h>
#include <my_string.h>
#include <stdlib.h>
#include <stdarg.h>

#include <X11/Intrinsic.h>
#include "lkeysym.h"

#include "stringtools.h"
#include "app_glob.c"

#include "coolwidget.h"
#include "coollocal.h"

#include "font.h"

#include "mad.h"

/* A lot of this stuff is hatched from rxvt-2.6.1: */

/*--------------------------------*-C-*---------------------------------*
 * File:	command.c
 *----------------------------------------------------------------------*
 * $Id: command.c,v 1.85.2.23 1999/08/12 16:32:39 mason Exp $
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (C) 1992      John Bovey, University of Kent at Canterbury <[e-mail]>
 *				- original version
 * Copyright (C) 1994      Robert Nation <[e-mail]>
 * 				- extensive modifications
 * Copyright (C) 1995      Garrett D'Amore <[e-mail]>
 *				- vt100 printing
 * Copyright (C) 1995      Steven Hirsch <[e-mail]>
 *				- X11 mouse report mode and support for
 *				  DEC "private mode" save/restore functions.
 * Copyright (C) 1995      Jakub Jelinek <[e-mail]>
 *				- key-related changes to handle Shift+function
 *				  keys properly.
 * Copyright (C) 1997      MJ Olesen <[e-mail]>
 *				- extensive modifications
 * Copyright (C) 1997      Raul Garcia Garcia <[e-mail]>
 *				- modification and cleanups for Solaris 2.x
 *				  and Linux 1.2.x
 * Copyright (C) 1997,1998 Oezguer Kesim <[e-mail]>
 * Copyright (C) 1998      Geoff Wing <[e-mail]>
 * Copyright (C) 1998      Alfredo K. Kojima <[e-mail]>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#ifndef HAVE_XPOINTER
typedef char   *XPointer;
#endif

#ifdef USE_XIM

static void xim_print_error (char *s,...)
{
    char k[1024];
    va_list ap;
    va_start (ap, s);
    vsprintf (k, s, ap);
    fprintf (stderr, "%s: %s\n", CAppName, k);
    va_end (ap);
}

int option_use_xim = 1;

static void IMInstantiateCallback (Display * display, XPointer client_data, XPointer call_data);

void init_xlocale (void)
{
    char *xim_locale = NULL;
    xim_locale = setlocale (LC_CTYPE, 0);
    CPushFont ("editor", 0);
    if (!xim_locale) {
	xim_print_error ("Setting locale failed.");
    } else if (!current_font->font_set) {
	xim_print_error ("Font set not loaded - cannot create input method.");
    } else {
#ifdef GREEK_SUPPORT
	greek_init ();
#endif
	if (option_use_xim)
	    XRegisterIMInstantiateCallback (CDisplay, NULL, NULL, NULL, IMInstantiateCallback, NULL);
    }
    CPopFont ();
}

void setPosition (CWidget * child, CWidget * w, XPoint * pos)
{
#ifdef dont_forget_this		/* FIXME */
    XWindowAttributes xwa;
    XGetWindowAttributes (CDisplay, TermWin.vt, &xwa);
    pos->x = Col2Pixel (screen.cur.col) + xwa.x;
    pos->y = Height2Pixel ((screen.cur.row + 1)) + xwa.y;
#else
    pos->x = w->width / 2;
    pos->y = w->height / 2;
#endif
}

static void IMSendSpot (Window window)
{
    XPoint spot;
    XVaNestedList preedit_attr;
    XIMStyle input_style;
    CWidget *child, *w;
    if (!window)
	return;
    if (!(child = CWidgetOfWindow (window)))
	return;
    if (child->mainid) {
	w = CWidgetOfWindow (child->mainid);
    } else {
	w = child;
    }
    if (!w->input_context)
	return;
    XGetICValues (w->input_context, XNInputStyle, &input_style, NULL);
    if (!(input_style & XIMPreeditPosition))
	return;
    setPosition (child, w, &spot);
    preedit_attr = XVaCreateNestedList (0, XNSpotLocation, &spot, NULL);
    XSetICValues (w->input_context, XNPreeditAttributes, preedit_attr, NULL);
    XFree (preedit_attr);
}

KeySym key_sym_xlat (XEvent * ev, char *x_lat)
{
    static int len = 0;
    static KeySym keysym = 0;
    static XComposeStatus compose =
    {NULL, 0};
    static unsigned char kbuf[512] = "";
    static Time time = 0;
    static int valid_keysym = 1;
    Status status_return = 0;
#ifdef GREEK_SUPPORT
    static short greek_mode = 0;
#endif
    if (x_lat)
	*x_lat = '\0';
    if (ev->type != KeyPress && ev->type != KeyRelease)
	return 0;
/* we mustn't call this twice with the same event */
    if (time == ev->xkey.time)
	goto no_repeat_call;
    time = ev->xkey.time;
    keysym = 0;
    len = 0;
    if (ev->type == KeyRelease) {
	len = XLookupString (&ev->xkey, (char *) kbuf, sizeof (kbuf), &keysym, 0);
	if (!len && (keysym >= 0x0100) && (keysym < 0x0800)) {
	    len = 1;
	    kbuf[0] = (keysym & 0xFF);
	}
    } else if (CIC) {
	CWidget *w;
	IMSendSpot (ev->xkey.window);
	w = CWidgetOfWindow (ev->xkey.window);
	if (!w)
	    return 0;
	if (w->mainid)
	    w = CWidgetOfWindow (w->mainid);
	if (w->input_context != CIC) {
	    printf ("w->input_context != CIC  -->  Huh?\n");	/* FIXME:this seems to actually happen */
	    return 0;
	}
	len = XmbLookupString (CIC, &ev->xkey, (char *) kbuf,
			       sizeof (kbuf), &keysym, &status_return);
	valid_keysym = ((status_return == XLookupKeySym)
			|| (status_return == XLookupBoth));
	if (valid_keysym) {
#ifdef GREEK_SUPPORT
	    if (keysym == XK_Mode_switch) {
		greek_mode = !greek_mode;
		if (greek_mode) {
		    xterm_seq (XTerm_title,
		      (greek_getmode () == GREEK_ELOT928 ? "[Greek: iso]"
		       : "[Greek: ibm]"));
		    greek_reset ();
		} else
		    xterm_seq (XTerm_title, APL_NAME "-" VERSION);
		return;
	    }
#endif
	}
    } else {
#if 0
      lookup_string:
#endif
	keysym = 0;
	len = XLookupString (&ev->xkey, (char *) kbuf, sizeof (kbuf), &keysym, &compose);
	if (!len && (keysym >= 0x0100) && (keysym < 0x0800)) {
	    len = 1;
	    kbuf[0] = (keysym & 0xFF);
	}
    }
  no_repeat_call:
    if (x_lat) {
	if (len > 0) {
	    if (len > 7)
		len = 7;
	    memcpy (x_lat, kbuf, len);
	    x_lat[len] = '\0';
	}
    }
/*    return valid_keysym ? keysym : 0; */
    return ((keysym >= 0x0100) && (keysym < 0x0800)) ? (valid_keysym ? kbuf[0] : 0) : (valid_keysym ? keysym : 0);
}


void setSize (CWidget * w, XRectangle * size)
{
#ifdef RXVT_SOURCE		/* FIXME */
    size->x = TermWin_internalBorder;
    size->y = TermWin_internalBorder;
    size->width = Width2Pixel (TermWin.ncol);
    size->height = Height2Pixel (TermWin.nrow);
#else
    size->x = 0;
    size->y = 0;
    size->width = w->width;
    size->height = w->height;
#endif
}

void setColor (CWidget * w, unsigned long *fg, unsigned long *bg)
{
#ifdef dont_forget_this		/* FIXME */
    *fg = PixColors[Color_fg];
    *bg = PixColors[Color_bg];
#else
    *fg = COLOR_BLACK;
    *bg = COLOR_WHITE;
#endif
}

void setPreeditArea (CWidget * w, XRectangle * preedit_rect, XRectangle * status_rect, XRectangle * needed_rect)
{
#ifdef RXVT_SOURCE		/* FIXME */
    preedit_rect->x = needed_rect->width
	+ (scrollbar_visible () && !(Options & Opt_scrollBar_right)
	   ? (SB_WIDTH + sb_shadow * 2) : 0);
    preedit_rect->y = Height2Pixel (TermWin.nrow - 1)
	+ ((menuBar.state == 1) ? menuBar_TotalHeight () : 0);

    preedit_rect->width = Width2Pixel (TermWin.ncol + 1) - needed_rect->width
	+ (!(Options & Opt_scrollBar_right)
	   ? (SB_WIDTH + sb_shadow * 2) : 0);
    preedit_rect->height = Height2Pixel (1);

    status_rect->x = (scrollbar_visible () && !(Options & Opt_scrollBar_right))
	? (SB_WIDTH + sb_shadow * 2) : 0;
    status_rect->y = Height2Pixel (TermWin.nrow - 1)
	+ ((menuBar.state == 1) ? menuBar_TotalHeight () : 0);

    status_rect->width = needed_rect->width ? needed_rect->width
	: Width2Pixel (TermWin.ncol + 1);
    status_rect->height = Height2Pixel (1);
#else
    preedit_rect->x = 0;
    preedit_rect->y = 0;
    preedit_rect->width = w->width;
    preedit_rect->height = w->height - 20;
    status_rect->x = 0;
    status_rect->y = w->height - 20;
    status_rect->width = w->width;
    status_rect->height = 20;