/*

Copyright 1988, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose 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.

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.

*/

/*
 * Copyright (c) 1987, Oracle and/or its affiliates.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

/*
 * Author:  Jim Fulton, MIT X Consortium; derived from parts of the
 * original xmodmap, written by David Rosenthal, of Sun Microsystems.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#ifdef WIN32
#include <X11/Xwindows.h>
#endif

#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <stdio.h>
#include "xmodmap.h"
#include "wq.h"

static void
mapping_busy_key(int timeout)
{
    int i;
    unsigned char keymap[32];
    static unsigned int masktable[8] = {
	0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };

    XQueryKeymap (dpy, (char *) keymap);

    fprintf (stderr,
	     "%s:  please release the following keys within %d seconds:\n",
	     ProgramName, timeout);
    for (i = 0; i < 256; i++) {
	if (keymap[i >> 3] & masktable[i & 7]) {
	    KeySym ks = XKeycodeToKeysym (dpy, (KeyCode) i, 0);
	    char *cp = XKeysymToString (ks);
	    fprintf (stderr, "    %s (keysym 0x%x, keycode %d)\n",
		     cp ? cp : "UNNAMED", (unsigned int)ks, i);
	}
    }
    sleep (timeout);
    return;
}

static void
mapping_busy_pointer(int timeout)
{
    int i;
    Window root, child;			/* dummy variables */
    int rx, ry, wx, wy;			/* dummy variables */
    unsigned int mask;
    static unsigned int masks[5] = {
	Button1Mask, Button2Mask, Button3Mask, Button4Mask, Button5Mask };

    if (!XQueryPointer (dpy, RootWindow(dpy,DefaultScreen(dpy)),
			&root, &child, &rx, &ry, &wx, &wy, &mask))
      mask = 0;

    fprintf (stderr,
	     "%s:  please release the following buttons within %d seconds:\n",
	     ProgramName, timeout);
    for (i = 0; i < 5; i++) {
	if (mask & masks[i]) 
	  fprintf (stderr, "    Button%d\n", i+1);
    }
    sleep (timeout);
    return;
}


/*
 * UpdateModifierMapping - this sends the modifier map to the server
 * and deals with retransmissions due to the keyboard being busy.
 */

int 
UpdateModifierMapping(XModifierKeymap *map)
{
    int retries, timeout;

    for (retries = 5, timeout = 2; retries > 0; retries--, timeout *= 2) {
	int result;

	result = XSetModifierMapping (dpy, map);
	switch (result) {
	  case MappingSuccess:	/* Success */
	    return (0);
	  case MappingBusy:		/* Busy */
	    mapping_busy_key (timeout);
	    continue;
	  case MappingFailed:
	    fprintf (stderr, "%s: bad set modifier mapping.\n",
		     ProgramName);
	    return (-1);
	  default:
	    fprintf (stderr, "%s:  bad return %d from XSetModifierMapping\n",
		     ProgramName, result);
	    return (-1);
	}
    }
    fprintf (stderr,
	     "%s:  unable to set modifier mapping, keyboard problem\n",
	     ProgramName);
    return (-1);
}


/*
 * AddModifier - this adds a keycode to the modifier list
 */

int 
AddModifier(XModifierKeymap **mapp, KeyCode keycode, int modifier)
{
    if (keycode) {
	*mapp = XInsertModifiermapEntry (*mapp, keycode, modifier);
	return (0);
    } else {
	return (-1);
    }
    /*NOTREACHED*/
}


/*
 * DeleteModifier - this removes a keycode from the modifier list
 */

int 
RemoveModifier(XModifierKeymap **mapp, KeyCode keycode, int modifier)
{
    if (keycode) {
	*mapp = XDeleteModifiermapEntry (*mapp, keycode, modifier);
	return (0);
    } else {
	return (-1);
    }
    /*NOTREACHED*/
}


/*
 * ClearModifier - this removes all entries from the modifier list
 */

int 
ClearModifier(XModifierKeymap **mapp, int modifier)
{
    int i;
    XModifierKeymap *map = *mapp;
    KeyCode *kcp;

    kcp = &map->modifiermap[modifier * map->max_keypermod];
    for (i = 0; i < map->max_keypermod; i++) {
	*kcp++ = (KeyCode) 0;
    }
    return (0);
}

static int
GetKeysymsPerKeycode(void)
{
    int min_keycode, max_keycode, keysyms_per_keycode = 0;
    KeySym *m;

    XDisplayKeycodes(dpy, &min_keycode, &max_keycode);
    m = XGetKeyboardMapping(dpy, min_keycode, (max_keycode - min_keycode + 1),
                            &keysyms_per_keycode);
    XFree(m);
    return keysyms_per_keycode;
}

/*
 * print the contents of the map
 */
void
PrintModifierMapping(XModifierKeymap *map, FILE *fp)
{
    int k = 0;
    int keysyms_per_keycode = GetKeysymsPerKeycode();

    fprintf (fp,
    	     "%s:  up to %d keys per modifier, (keycodes in parentheses):\n\n", 
    	     ProgramName, map->max_keypermod);
    for (int i = 0; i < 8; i++) {
	fprintf(fp, "%-10s", modifier_table[i].name);

	for (int j = 0; j < map->max_keypermod; j++) {
	    if (map->modifiermap[k]) {
		KeySym ks;
		int index = 0;
		char *nm;
		do {
		    ks = XKeycodeToKeysym(dpy, map->modifiermap[k], index);
		    index++;
		} while ( !ks && index < keysyms_per_keycode);
		nm = XKeysymToString(ks);

		fprintf (fp, "%s  %s (0x%0x)", (j > 0 ? "," : ""), 
			 (nm ? nm : "BadKey"), map->modifiermap[k]);
	    }
	    k++;
	}
	fprintf(fp, "\n");
    }
    fprintf (fp, "\n");
    return;
}

void
PrintKeyTable(Bool exprs, FILE *fp)
{
    int         i;
    int min_keycode, max_keycode, keysyms_per_keycode;
    KeySym *keymap, *origkeymap;

    XDisplayKeycodes (dpy, &min_keycode, &max_keycode);
    origkeymap = XGetKeyboardMapping (dpy, min_keycode,
				      (max_keycode - min_keycode + 1),
				      &keysyms_per_keycode);

    if (!origkeymap) {
	fprintf (stderr, "%s:  unable to get keyboard mapping table.\n",
		 ProgramName);
	return;
    }
    if (!exprs) {
	fprintf (fp, 
		 "There are %d KeySyms per KeyCode; KeyCodes range from %d to %d.\n\n", 
		 keysyms_per_keycode, min_keycode, max_keycode);
	fprintf (fp, "    KeyCode\tKeysym (Keysym)\t...\n");
	fprintf (fp, "    Value  \tValue   (Name) \t...\n\n");
    }
    keymap = origkeymap;
    for (i = min_keycode; i <= max_keycode; i++) {
	int  j, max;

	if (exprs)
	    fprintf(fp, "keycode %3d =", i);
	else
	    fprintf(fp, "    %3d    \t", i);
	max = keysyms_per_keycode - 1;
	while ((max >= 0) && (keymap[max] == NoSymbol))
	    max--;
	for (j = 0; j <= max; j++) {
	    register KeySym ks = keymap[j];
	    const char *s;
	    if (ks != NoSymbol)
		s = XKeysymToString (ks);
	    else
		s = "NoSymbol";
	    if (!exprs)
		fprintf (fp, "0x%04x (%s)\t", 
			 (unsigned int)ks, s ? s : "no name");
	    else if (s)
		fprintf (fp, " %s", s);
	    else
		fprintf (fp, " 0x%04x", (unsigned int)ks);
	}
	keymap += keysyms_per_keycode;
	fprintf (fp, "\n");
    }

    XFree ((char *) origkeymap);
    return;
}

void
PrintPointerMap(FILE *fp)
{
    unsigned char pmap[256];		/* there are 8 bits of buttons */
    int count, i;

    count = XGetPointerMapping (dpy, pmap, 256);

    fprintf (fp, "There are %d pointer buttons defined.\n\n", count);
    fprintf (fp, "    Physical        Button\n");
    fprintf (fp, "     Button          Code\n");
/*               "      ###            ###\n"               */
    for (i = 0; i < count; i++) {
	fprintf (fp, "      %3u            %3u\n", 
		 i+1, (unsigned int) pmap[i]);
    }
    fprintf (fp, "\n");
    return;
}


/*
 * SetPointerMap - set the pointer map
 */

int 
SetPointerMap(unsigned char *map, int n)
{
    unsigned char defmap[MAXBUTTONCODES];
    int j;
    int retries, timeout;

    if (n == 0) {				/* reset to default */
	n = XGetPointerMapping (dpy, defmap, MAXBUTTONCODES);
	for (j = 0; j < n; j++) defmap[j] = (unsigned char) (j + 1);
	map = defmap;
    }

    for (retries = 5, timeout = 2; retries > 0; retries--, timeout *= 2) {
	int result;

	switch (result = XSetPointerMapping (dpy, map, n)) {
	  case MappingSuccess:
	    return 0;
	  case MappingBusy:
	    mapping_busy_pointer (timeout);
	    continue;
	  case MappingFailed:
	    fprintf (stderr, "%s:  bad pointer mapping\n", ProgramName);
	    return -1;
	  default:
	    fprintf (stderr, "%s:  bad return %d from XSetPointerMapping\n",
		     ProgramName, result);
	    return -1;
	}
    }
    fprintf (stderr, "%s:  unable to set pointer mapping\n", ProgramName);
    return -1;
}