1 | /* |
2 | * Copyright (C) 2019 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
16 | * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
17 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
18 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
19 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
20 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
22 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 | */ |
24 | |
25 | #pragma once |
26 | |
27 | #if ENABLE(POINTER_EVENTS) |
28 | |
29 | #include "PointerID.h" |
30 | #include <wtf/HashMap.h> |
31 | |
32 | namespace WebCore { |
33 | |
34 | class Element; |
35 | class EventTarget; |
36 | class PointerEvent; |
37 | |
38 | class PointerCaptureController { |
39 | WTF_MAKE_NONCOPYABLE(PointerCaptureController); |
40 | WTF_MAKE_FAST_ALLOCATED; |
41 | public: |
42 | explicit PointerCaptureController(Page&); |
43 | |
44 | ExceptionOr<void> setPointerCapture(Element*, PointerID); |
45 | ExceptionOr<void> releasePointerCapture(Element*, PointerID); |
46 | bool hasPointerCapture(Element*, PointerID); |
47 | void reset(); |
48 | |
49 | void pointerLockWasApplied(); |
50 | void elementWasRemoved(Element&); |
51 | |
52 | RefPtr<PointerEvent> pointerEventForMouseEvent(const MouseEvent&); |
53 | |
54 | #if ENABLE(TOUCH_EVENTS) && PLATFORM(IOS_FAMILY) |
55 | void dispatchEventForTouchAtIndex(EventTarget&, const PlatformTouchEvent&, unsigned, bool isPrimary, WindowProxy&); |
56 | #endif |
57 | |
58 | WEBCORE_EXPORT void touchWithIdentifierWasRemoved(PointerID); |
59 | bool hasCancelledPointerEventForIdentifier(PointerID); |
60 | bool preventsCompatibilityMouseEventsForIdentifier(PointerID); |
61 | void dispatchEvent(PointerEvent&, EventTarget*); |
62 | WEBCORE_EXPORT void cancelPointer(PointerID, const IntPoint&); |
63 | |
64 | private: |
65 | struct CapturingData { |
66 | RefPtr<Element> pendingTargetOverride; |
67 | RefPtr<Element> targetOverride; |
68 | String pointerType; |
69 | bool cancelled { false }; |
70 | bool isPrimary { false }; |
71 | bool preventsCompatibilityMouseEvents { false }; |
72 | bool pointerIsPressed { false }; |
73 | short previousMouseButton { -1 }; |
74 | }; |
75 | |
76 | void pointerEventWillBeDispatched(const PointerEvent&, EventTarget*); |
77 | void pointerEventWasDispatched(const PointerEvent&); |
78 | void processPendingPointerCapture(const PointerEvent&); |
79 | |
80 | Page& m_page; |
81 | // While PointerID is defined as int32_t, we use int64_t here so that we may use a value outside of the int32_t range to have safe |
82 | // empty and removed values, allowing any int32_t to be provided through the API for lookup in this hashmap. |
83 | using PointerIdToCapturingDataMap = HashMap<int64_t, CapturingData, WTF::IntHash<int64_t>, WTF::SignedWithZeroKeyHashTraits<int64_t>>; |
84 | PointerIdToCapturingDataMap m_activePointerIdsToCapturingData; |
85 | }; |
86 | |
87 | } // namespace WebCore |
88 | |
89 | #endif // ENABLE(POINTER_EVENTS) |
90 | |