WheelEventMac.mm   [plain text]

/*
 * Copyright (C) 2004, 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. 
 */
#import "GraphicsServices/GraphicsServices.h"
#import "WKWindow.h"

#import "config.h"
#import "PlatformWheelEvent.h"
#import "Screen.h"

namespace WebCore {

static IntPoint positionForEvent(GSEventRef event)
{
    if (GSEventIsMouseEventType (event) || GSEventGetType (event) == kGSEventScrollWheel)
        return IntPoint (GSEventGetLocationInWindow (event));
    return IntPoint ();
}

static IntPoint globalPositionForEvent(GSEventRef event)
{
    if (GSEventIsMouseEventType(event) || GSEventGetType(event) == kGSEventScrollWheel)
        return IntPoint(GSEventGetLocationInWindow(event));
    else
        return IntPoint();
}

static bool eventIsHorizontal(GSEventRef event)
{
    if (GSEventGetType (event) == kGSEventScrollWheel) {
        return GSEventGetDeltaX (event) != 0;
    }
    return false;
}

static int deltaForEvent(GSEventRef event)
{
    if (GSEventGetType (event) == kGSEventScrollWheel)
        return lrint((eventIsHorizontal(event) ? GSEventGetDeltaX (event) : GSEventGetDeltaY (event)) * 120);
    return 0;
}

PlatformWheelEvent::PlatformWheelEvent(GSEventRef event)
    : m_position(positionForEvent(event))
    , m_globalPosition(globalPositionForEvent(event))
    , m_delta(deltaForEvent(event))
    , m_isHorizontal(eventIsHorizontal(event))
    , m_isAccepted(false)
    , m_shiftKey(GSEventGetModifierFlags(event) & kGSEventFlagMaskShift)
    , m_ctrlKey(GSEventGetModifierFlags(event) & kGSEventFlagMaskControl)
    , m_altKey(GSEventGetModifierFlags(event) & kGSEventFlagMaskAlternate)
    , m_metaKey(GSEventGetModifierFlags(event) & kGSEventFlagMaskCommand)
{
}

}