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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
* 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 "config.h"
#include "PlatformWheelEvent.h"
#include <gdk/gdk.h>
#include <gtk/gtkversion.h>
namespace WebCore {
// Keep this in sync with the other platform event constructors
PlatformWheelEvent::PlatformWheelEvent(GdkEventScroll* event)
{
static const float delta = 1;
m_deltaX = 0;
m_deltaY = 0;
// Docs say an upwards scroll (away from the user) has a positive delta
switch (event->direction) {
case GDK_SCROLL_UP:
m_deltaY = delta;
break;
case GDK_SCROLL_DOWN:
m_deltaY = -delta;
break;
case GDK_SCROLL_LEFT:
m_deltaX = -delta;
break;
case GDK_SCROLL_RIGHT:
m_deltaX = delta;
break;
}
m_position = IntPoint((int)event->x, (int)event->y);
m_globalPosition = IntPoint((int)event->x_root, (int)event->y_root);
m_granularity = ScrollByLineWheelEvent;
m_isAccepted = false;
m_shiftKey = event->state & GDK_SHIFT_MASK;
m_ctrlKey = event->state & GDK_CONTROL_MASK;
m_altKey = event->state & GDK_MOD1_MASK;
#if GTK_CHECK_VERSION(2,10,0)
m_metaKey = event->state & GDK_META_MASK;
#else
// GDK_MOD2_MASK doesn't always mean meta so we can't use it
m_metaKey = false;
#endif
// FIXME: retrieve the user setting for the number of lines to scroll on each wheel event
m_deltaX *= horizontalLineMultiplier();
m_deltaY *= verticalLineMultiplier();
}
}
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