include/core/modifierhandler.h

/*
 * Copyright © 2008 Dennis Kasprzyk
 * Copyright © 2007 Novell, Inc.
 *
 * 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, and that the name of
 * Dennis Kasprzyk not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior permission.
 * Dennis Kasprzyk makes no representations about the suitability of this
 * software for any purpose. It is provided "as is" without express or
 * implied warranty.
 *
 * DENNIS KASPRZYK DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
 * NO EVENT SHALL DENNIS KASPRZYK 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.
 *
 * Authors: Dennis Kasprzyk <onestone@compiz-fusion.org>
 *          David Reveman <davidr@novell.com>
 *          Sam Spilsbury <smspillaz@gmail.com>
 */

#include <core/core.h>

class ModifierHandler
{
    public:

        ModifierHandler ();
        ~ModifierHandler ();

        typedef enum
        {
            Alt = 1,
            Meta,
            Super,
            Hyper,
            ModeSwitch,
            NumLock,
            ScrollLock,
            ModNum
        } Modifier;

        typedef enum
        {
            AltMask        = (1 << 16),
            MetaMask       = (1 << 17),
            SuperMask      = (1 << 18),
            HyperMask      = (1 << 19),
            ModeSwitchMask = (1 << 20),
            NumLockMask    = (1 << 21),
            ScrollLockMask = (1 << 22),
            NoMask         = (1 << 25),
        } ModMask;

    public:


        unsigned int keycodeToModifiers (int keycode);

        void updateModifierMappings ();

        unsigned int virtualToRealModMask (unsigned int modMask);

        unsigned int modMask (Modifier);

        unsigned int ignoredModMask ();

        const XModifierKeymap * modMap ();

        friend class CompScreen;

    private:

        static const unsigned int virtualModMask[7];

        static const int maskTable[8];

        static const int maskTableSize = 8;

        ModMask    mModMask[ModNum];
        unsigned int    mIgnoredModMask;
        XModifierKeymap *mModMap;
};

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