/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. 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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. OR

 * CONTRIBUTORS 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. 

 */

#include "PlatformMouseEvent.h"

#include <wtf/Assertions.h>

#include <windows.h>

#include <windowsx.h>

namespace WebCore {

#define HIGH_BIT_MASK_SHORT 0x8000

static IntPoint positionForEvent(HWND hWnd, LPARAM lParam)

{

    POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};

    return point;

}

static IntPoint globalPositionForEvent(HWND hWnd, LPARAM lParam)

{

    POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};

    ClientToScreen(hWnd, &point);

    return point;

}

static MouseEventType messageToEventType(UINT message)

{

    switch (message) {

        case WM_LBUTTONDBLCLK:

        case WM_RBUTTONDBLCLK:

        case WM_MBUTTONDBLCLK:

            //MSDN docs say double click is sent on mouse down

        case WM_LBUTTONDOWN:

        case WM_RBUTTONDOWN:

        case WM_MBUTTONDOWN:

            return MouseEventPressed;

        case WM_LBUTTONUP:

        case WM_RBUTTONUP:

        case WM_MBUTTONUP:

            return MouseEventReleased;

        case WM_MOUSEMOVE:

            return MouseEventMoved;

        default:

            ASSERT_NOT_REACHED();

            //Move is relatively harmless

            return MouseEventMoved;

    }

}

PlatformMouseEvent::PlatformMouseEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool activatedWebView)

    : m_position(positionForEvent(hWnd, lParam))

    , m_globalPosition(globalPositionForEvent(hWnd, lParam))

    , m_clickCount(0)

    , m_shiftKey(wParam & MK_SHIFT)

    , m_ctrlKey(wParam & MK_CONTROL)

    , m_altKey(GetKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT)

    , m_metaKey(m_altKey) // FIXME: We'll have to test other browsers

    , m_activatedWebView(activatedWebView)

    , m_eventType(messageToEventType(message))

    , m_modifierFlags(wParam)

{

    m_timestamp = ::GetTickCount()*0.001; // GetTickCount returns milliseconds

    switch (message) {

        case WM_LBUTTONDOWN:

        case WM_LBUTTONUP:

        case WM_LBUTTONDBLCLK:

            m_button = LeftButton;

            break;

        case WM_RBUTTONDOWN:

        case WM_RBUTTONUP:

        case WM_RBUTTONDBLCLK:

            m_button = RightButton;

            break;

        case WM_MBUTTONDOWN:

        case WM_MBUTTONUP:

        case WM_MBUTTONDBLCLK:

            m_button = MiddleButton;

            break;

        case WM_MOUSEMOVE:

            if (wParam & MK_LBUTTON)

                m_button = LeftButton;

            else if (wParam & MK_MBUTTON)

                m_button = MiddleButton;

            else if (wParam & MK_RBUTTON)

                m_button = RightButton;

            else

                m_button = NoButton;

            break;

        default:

            ASSERT_NOT_REACHED();

    }

}

} // namespace WebCore