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Side by Side Diff: sky/engine/core/events/WheelEvent.h

Issue 870073003: Remove mouse events from Sky (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 11 months ago
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1 /*
2 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
3 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserv ed.
6 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25 #ifndef SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
26 #define SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
27
28 #include "sky/engine/core/events/EventDispatchMediator.h"
29 #include "sky/engine/core/events/MouseEvent.h"
30 #include "sky/engine/platform/geometry/FloatPoint.h"
31
32 namespace blink {
33
34 class PlatformWheelEvent;
35
36 struct WheelEventInit : public MouseEventInit {
37 WheelEventInit();
38
39 double deltaX;
40 double deltaY;
41 double deltaZ;
42 int wheelDeltaX; // Deprecated.
43 int wheelDeltaY; // Deprecated.
44 unsigned deltaMode;
45 };
46
47 class WheelEvent final : public MouseEvent {
48 DEFINE_WRAPPERTYPEINFO();
49 public:
50 enum { TickMultiplier = 120 };
51
52 enum DeltaMode {
53 DOM_DELTA_PIXEL = 0,
54 DOM_DELTA_LINE,
55 DOM_DELTA_PAGE
56 };
57
58 static PassRefPtr<WheelEvent> create()
59 {
60 return adoptRef(new WheelEvent);
61 }
62
63 static PassRefPtr<WheelEvent> create(const AtomicString& type, const WheelEv entInit& initializer)
64 {
65 return adoptRef(new WheelEvent(type, initializer));
66 }
67
68 static PassRefPtr<WheelEvent> create(const FloatPoint& wheelTicks,
69 const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtr<AbstractView> view,
70 const IntPoint& screenLocation, const IntPoint& pageLocation,
71 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
72 {
73 return adoptRef(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
74 screenLocation, pageLocation, ctrlKey, altKey, shiftKey, metaKey));
75 }
76
77 double deltaX() const { return m_deltaX; } // Positive when scrolling right.
78 double deltaY() const { return m_deltaY; } // Positive when scrolling down.
79 double deltaZ() const { return m_deltaZ; }
80 int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX( ); } // Deprecated.
81 int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right.
82 int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down.
83 unsigned deltaMode() const { return m_deltaMode; }
84 float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMul tiplier; }
85 float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMul tiplier; }
86
87 virtual const AtomicString& interfaceName() const override;
88 virtual bool isMouseEvent() const override;
89 virtual bool isWheelEvent() const override;
90
91 private:
92 WheelEvent();
93 WheelEvent(const AtomicString&, const WheelEventInit&);
94 WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
95 unsigned, PassRefPtr<AbstractView>, const IntPoint& screenLocation, cons t IntPoint& pageLocation,
96 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
97
98 IntPoint m_wheelDelta;
99 double m_deltaX;
100 double m_deltaY;
101 double m_deltaZ;
102 unsigned m_deltaMode;
103 };
104
105 DEFINE_EVENT_TYPE_CASTS(WheelEvent);
106
107 class WheelEventDispatchMediator final : public EventDispatchMediator {
108 public:
109 static PassRefPtr<WheelEventDispatchMediator> create(const PlatformWheelEven t&, PassRefPtr<AbstractView>);
110 private:
111 WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtr<AbstractVie w>);
112 WheelEvent* event() const;
113 virtual bool dispatchEvent(EventDispatcher*) const override;
114 };
115
116 } // namespace blink
117
118 #endif // SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
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