1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * (C) 2006 Michael Emmel mike.emmel (at) gmail.com. All rights reserved. 4 * (C) 2008 Kenneth Rohde Christiansen. All rights reserved. 5 * (C) 2009 INdT - Instituto Nokia de Tecnologia. 6 * (C) 2009-2010 ProFUSION embedded systems 7 * (C) 2009-2010 Samsung Electronics 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 26 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "PlatformWheelEvent.h" 33 34 #include "Scrollbar.h" 35 36 #include <Evas.h> 37 38 namespace WebCore { 39 40 enum { 41 VerticalScrollDirection = 0, 42 HorizontalScrollDirection = 1 43 }; 44 45 PlatformWheelEvent::PlatformWheelEvent(const Evas_Event_Mouse_Wheel* ev) 46 : m_position(IntPoint(ev->canvas.x, ev->canvas.y)) 47 , m_globalPosition(IntPoint(ev->canvas.x, ev->canvas.y)) 48 , m_granularity(ScrollByPixelWheelEvent) 49 , m_isAccepted(false) 50 , m_shiftKey(evas_key_modifier_is_set(ev->modifiers, "Shift")) 51 , m_ctrlKey(evas_key_modifier_is_set(ev->modifiers, "Control")) 52 , m_altKey(evas_key_modifier_is_set(ev->modifiers, "Alt")) 53 , m_metaKey(evas_key_modifier_is_set(ev->modifiers, "Meta")) 54 { 55 // A negative z value means (in EFL) that we are scrolling down, so we need 56 // to invert the value. 57 if (ev->direction == VerticalScrollDirection) { 58 m_deltaX = 0; 59 m_deltaY = - ev->z; 60 } else if (ev->direction == HorizontalScrollDirection) { 61 m_deltaX = - ev->z; 62 m_deltaY = 0; 63 } 64 65 // FIXME: retrieve the user setting for the number of lines to scroll on each wheel event 66 m_wheelTicksX = m_deltaX; 67 m_wheelTicksY = m_deltaY; 68 m_deltaX *= static_cast<float>(Scrollbar::pixelsPerLineStep()); 69 m_deltaY *= static_cast<float>(Scrollbar::pixelsPerLineStep()); 70 } 71 72 } 73
