1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* Copyright (C) 2017 Google Inc. All rights reserved.
*
* 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#pragma once
#include "EventTarget.h"
#include "LocalDOMWindowProperty.h"
#include <wtf/RefCounted.h>
namespace WebCore {
class VisualViewport final : public RefCounted<VisualViewport>, public EventTarget, public LocalDOMWindowProperty {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(VisualViewport);
public:
static Ref<VisualViewport> create(LocalDOMWindow& window) { return adoptRef(*new VisualViewport(window)); }
// EventTarget
enum EventTargetInterfaceType eventTargetInterface() const final;
ScriptExecutionContext* scriptExecutionContext() const final;
bool addEventListener(const AtomString& eventType, Ref<EventListener>&&, const AddEventListenerOptions&) final;
double offsetLeft() const;
double offsetTop() const;
double pageLeft() const;
double pageTop() const;
double width() const;
double height() const;
double scale() const;
void update();
using RefCounted::ref;
using RefCounted::deref;
private:
explicit VisualViewport(LocalDOMWindow&);
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
void updateFrameLayout() const;
double m_offsetLeft { 0 };
double m_offsetTop { 0 };
double m_pageLeft { 0 };
double m_pageTop { 0 };
double m_width { 0 };
double m_height { 0 };
double m_scale { 1 };
};
} // namespace WebCore
|
