/****************************************************************************
**
** Copyright (C) 2015-2016 Oleg Shparber
** Copyright (C) 2013-2014 Jerzy Kozera
** Contact: https://go.zealdocs.org/l/contact
**
** This file is part of Zeal.
**
** Zeal 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 3 of the License, or
** (at your option) any later version.
**
** Zeal 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 Zeal. If not, see <https://www.gnu.org/licenses/>.
**
****************************************************************************/
/****************************************************************************
** Copyright (c) 2006 - 2011, the LibQxt project.
** See the Qxt AUTHORS file for a list of authors and copyright holders.
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
**     * Redistributions of source code must retain the above copyright
**       notice, this list of conditions and the following disclaimer.
**     * Redistributions in binary form must reproduce the above copyright
**       notice, this list of conditions and the following disclaimer in the
**       documentation and/or other materials provided with the distribution.
**     * Neither the name of the LibQxt project nor the
**       names of its contributors may be used to endorse or promote products
**       derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
** <http://libqxt.org>  <foundation@libqxt.org>
*****************************************************************************/

#include "qxtglobalshortcut_p.h"

#include <qt_windows.h>

bool QxtGlobalShortcutPrivate::nativeEventFilter(const QByteArray &eventType,
                                                 void *message, long *result)
{
    Q_UNUSED(eventType)
    Q_UNUSED(result)

    MSG *msg = static_cast<MSG *>(message);
    if (msg->message == WM_HOTKEY) {
        const quint32 keycode = HIWORD(msg->lParam);
        const quint32 modifiers = LOWORD(msg->lParam);
        activateShortcut(keycode, modifiers);
    }

    return false;
}

quint32 QxtGlobalShortcutPrivate::nativeModifiers(Qt::KeyboardModifiers modifiers)
{
    // MOD_ALT, MOD_CONTROL, (MOD_KEYUP), MOD_SHIFT, MOD_WIN
    quint32 native = 0;
    if (modifiers & Qt::ShiftModifier)
        native |= MOD_SHIFT;
    if (modifiers & Qt::ControlModifier)
        native |= MOD_CONTROL;
    if (modifiers & Qt::AltModifier)
        native |= MOD_ALT;
    if (modifiers & Qt::MetaModifier)
        native |= MOD_WIN;
    // TODO: resolve these?
    //if (modifiers & Qt::KeypadModifier)
    //if (modifiers & Qt::GroupSwitchModifier)
    return native;
}

quint32 QxtGlobalShortcutPrivate::nativeKeycode(Qt::Key key)
{
    switch (key) {
    case Qt::Key_Escape:
        return VK_ESCAPE;
    case Qt::Key_Tab:
    case Qt::Key_Backtab:
        return VK_TAB;
    case Qt::Key_Backspace:
        return VK_BACK;
    case Qt::Key_Return:
    case Qt::Key_Enter:
        return VK_RETURN;
    case Qt::Key_Insert:
        return VK_INSERT;
    case Qt::Key_Delete:
        return VK_DELETE;
    case Qt::Key_Pause:
        return VK_PAUSE;
    case Qt::Key_Print:
        return VK_PRINT;
    case Qt::Key_Clear:
        return VK_CLEAR;
    case Qt::Key_Home:
        return VK_HOME;
    case Qt::Key_End:
        return VK_END;
    case Qt::Key_Left:
        return VK_LEFT;
    case Qt::Key_Up:
        return VK_UP;
    case Qt::Key_Right:
        return VK_RIGHT;
    case Qt::Key_Down:
        return VK_DOWN;
    case Qt::Key_PageUp:
        return VK_PRIOR;
    case Qt::Key_PageDown:
        return VK_NEXT;
    case Qt::Key_F1:
        return VK_F1;
    case Qt::Key_F2:
        return VK_F2;
    case Qt::Key_F3:
        return VK_F3;
    case Qt::Key_F4:
        return VK_F4;
    case Qt::Key_F5:
        return VK_F5;
    case Qt::Key_F6:
        return VK_F6;
    case Qt::Key_F7:
        return VK_F7;
    case Qt::Key_F8:
        return VK_F8;
    case Qt::Key_F9:
        return VK_F9;
    case Qt::Key_F10:
        return VK_F10;
    case Qt::Key_F11:
        return VK_F11;
    case Qt::Key_F12:
        return VK_F12;
    case Qt::Key_F13:
        return VK_F13;
    case Qt::Key_F14:
        return VK_F14;
    case Qt::Key_F15:
        return VK_F15;
    case Qt::Key_F16:
        return VK_F16;
    case Qt::Key_F17:
        return VK_F17;
    case Qt::Key_F18:
        return VK_F18;
    case Qt::Key_F19:
        return VK_F19;
    case Qt::Key_F20:
        return VK_F20;
    case Qt::Key_F21:
        return VK_F21;
    case Qt::Key_F22:
        return VK_F22;
    case Qt::Key_F23:
        return VK_F23;
    case Qt::Key_F24:
        return VK_F24;
    case Qt::Key_Space:
        return VK_SPACE;
    case Qt::Key_Asterisk:
        return VK_MULTIPLY;
    case Qt::Key_Plus:
        return VK_ADD;
    case Qt::Key_Comma:
        return VK_SEPARATOR;
    case Qt::Key_Minus:
        return VK_SUBTRACT;
    case Qt::Key_Slash:
        return VK_DIVIDE;
    case Qt::Key_MediaNext:
        return VK_MEDIA_NEXT_TRACK;
    case Qt::Key_MediaPrevious:
        return VK_MEDIA_PREV_TRACK;
    case Qt::Key_MediaPlay:
        return VK_MEDIA_PLAY_PAUSE;
    case Qt::Key_MediaStop:
        return VK_MEDIA_STOP;
        // couldn't find those in VK_*
        //case Qt::Key_MediaLast:
        //case Qt::Key_MediaRecord:
    case Qt::Key_VolumeDown:
        return VK_VOLUME_DOWN;
    case Qt::Key_VolumeUp:
        return VK_VOLUME_UP;
    case Qt::Key_VolumeMute:
        return VK_VOLUME_MUTE;

        // numbers
    case Qt::Key_0:
    case Qt::Key_1:
    case Qt::Key_2:
    case Qt::Key_3:
    case Qt::Key_4:
    case Qt::Key_5:
    case Qt::Key_6:
    case Qt::Key_7:
    case Qt::Key_8:
    case Qt::Key_9:
        return key;

        // letters
    case Qt::Key_A:
    case Qt::Key_B:
    case Qt::Key_C:
    case Qt::Key_D:
    case Qt::Key_E:
    case Qt::Key_F:
    case Qt::Key_G:
    case Qt::Key_H:
    case Qt::Key_I:
    case Qt::Key_J:
    case Qt::Key_K:
    case Qt::Key_L:
    case Qt::Key_M:
    case Qt::Key_N:
    case Qt::Key_O:
    case Qt::Key_P:
    case Qt::Key_Q:
    case Qt::Key_R:
    case Qt::Key_S:
    case Qt::Key_T:
    case Qt::Key_U:
    case Qt::Key_V:
    case Qt::Key_W:
    case Qt::Key_X:
    case Qt::Key_Y:
    case Qt::Key_Z:
        return key;

    default:
        return 0;
    }
}

bool QxtGlobalShortcutPrivate::registerShortcut(quint32 nativeKey, quint32 nativeMods)
{
    return RegisterHotKey(0, nativeMods ^ nativeKey, nativeMods, nativeKey);
}

bool QxtGlobalShortcutPrivate::unregisterShortcut(quint32 nativeKey, quint32 nativeMods)
{
    return UnregisterHotKey(0, nativeMods ^ nativeKey);
}
