MouseEventWin.cpp   [plain text]

/*
 * Copyright (C) 2006 Apple Computer, 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 <windows.h>

namespace WebCore {

const PlatformMouseEvent::CurrentEventTag PlatformMouseEvent::currentEvent = {};

#define HIGH_BIT_MASK_SHORT 0x8000

static IntPoint positionForEvent(HWND hWnd, LPARAM lParam)
{
    POINT point = {LOWORD(lParam), HIWORD(lParam)};
    MapWindowPoints(hWnd, GetAncestor(hWnd, GA_ROOT), &point, 1);
    return point;
}

static IntPoint globalPositionForEvent(HWND hWnd, LPARAM lParam)
{
    POINT point = {LOWORD(lParam), HIWORD(lParam)};
    ClientToScreen(hWnd, &point);
    return point;
}

PlatformMouseEvent::PlatformMouseEvent(HWND hWnd, WPARAM wParam, LPARAM lParam, int clkCount)
    : m_position(positionForEvent(hWnd, lParam))
    , m_globalPosition(globalPositionForEvent(hWnd, lParam))
    , m_clickCount(clkCount)
    , m_shiftKey(wParam & MK_SHIFT)
    , m_ctrlKey(wParam & MK_CONTROL)
    , m_altKey(GetAsyncKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT)
    , m_metaKey(m_altKey) // FIXME: We'll have to test other browsers
{
    if (wParam & MK_LBUTTON)
        m_button = LeftButton;
    else if (wParam & MK_RBUTTON)
        m_button = RightButton;
    else if (wParam & MK_MBUTTON)
        m_button = MiddleButton;
}

}