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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* (C) 2006 Michael Emmel mike.emmel@gmail.com. All rights reserved.
* (C) 2008 Kenneth Rohde Christiansen. All rights reserved.
* (C) 2009 INdT - Instituto Nokia de Tecnologia.
* (C) 2009-2010 ProFUSION embedded systems
* (C) 2009-2010 Samsung Electronics
*
* 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 "config.h"
#include "PlatformWheelEvent.h"
#include "Scrollbar.h"
#include <Evas.h>
#include <wtf/CurrentTime.h>
namespace WebCore {
enum {
VerticalScrollDirection = 0,
HorizontalScrollDirection = 1
};
PlatformWheelEvent::PlatformWheelEvent(const Evas_Event_Mouse_Wheel* ev)
: PlatformEvent(PlatformEvent::Wheel, evas_key_modifier_is_set(ev->modifiers, "Shift"), evas_key_modifier_is_set(ev->modifiers, "Control"), evas_key_modifier_is_set(ev->modifiers, "Alt"), evas_key_modifier_is_set(ev->modifiers, "Meta"), currentTime())
, m_position(IntPoint(ev->canvas.x, ev->canvas.y))
, m_globalPosition(IntPoint(ev->canvas.x, ev->canvas.y))
, m_granularity(ScrollByPixelWheelEvent)
, m_directionInvertedFromDevice(false)
{
// A negative z value means (in EFL) that we are scrolling down, so we need
// to invert the value.
if (ev->direction == VerticalScrollDirection) {
m_deltaX = 0;
m_deltaY = - ev->z;
} else if (ev->direction == HorizontalScrollDirection) {
m_deltaX = - ev->z;
m_deltaY = 0;
}
// FIXME: retrieve the user setting for the number of lines to scroll on each wheel event
m_wheelTicksX = m_deltaX;
m_wheelTicksY = m_deltaY;
m_deltaX *= static_cast<float>(Scrollbar::pixelsPerLineStep());
m_deltaY *= static_cast<float>(Scrollbar::pixelsPerLineStep());
}
}
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