1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * (C) 2006 Michael Emmel mike.emmel@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
PlatformWheelEvent(const Evas_Event_Mouse_Wheel * ev)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