/* * Copyright (C) 2006 Apple 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 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 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()); } }