/*
 * common/xutil.h - X-related useful functions header
 *
 * Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#ifndef AWESOME_COMMON_XUTIL_H
#define AWESOME_COMMON_XUTIL_H

#include <xcb/xcb.h>
#include <xcb/xcb_keysyms.h>

#include "common/atoms.h"
#include "common/util.h"

#define MAX_X11_COORDINATE INT16_MAX
#define MIN_X11_COORDINATE INT16_MIN
#define MAX_X11_SIZE UINT16_MAX
#define MIN_X11_SIZE 1

static inline char *
xutil_get_text_property_from_reply(xcb_get_property_reply_t *reply)
{
    if(reply
       && (reply->type == XCB_ATOM_STRING
           || reply->type == UTF8_STRING
           || reply->type == COMPOUND_TEXT)
       && reply->format == 8
       && xcb_get_property_value_length(reply))
    {
        /* We need to copy it that way since the string may not be
         * NULL-terminated */
        int len = xcb_get_property_value_length(reply);
        char *value = p_new(char, len + 1);
        memcpy(value, xcb_get_property_value(reply), len);
        value[len] = '\0';
        return value;
    }
    return NULL;
}

static inline void
xutil_ungrab_server(xcb_connection_t *connection)
{
    /* XCB's output buffer might have filled up between the GrabServer request
     * and now. Thus, the GrabServer might already have been sent and the
     * following UngrabServer would sit around in the output buffer for an
     * indeterminate time and might cause problems. We cannot detect this
     * situation, so just always flush directly after UngrabServer.
     */
    xcb_ungrab_server(connection);
    xcb_flush(connection);
}
#define xcb_ungrab_server do_not_use_xcb_ungrab_server_directly

uint16_t xutil_key_mask_fromstr(const char *);
void xutil_key_mask_tostr(uint16_t, const char **, size_t *);

#endif
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