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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2009, 2010, 2013 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "HTMLFrameOwnerElement.h"
#include "OverlapTestRequestClient.h"
#include "RenderReplaced.h"
#include "Widget.h"
namespace WebCore {
class RemoteFrame;
class WidgetHierarchyUpdatesSuspensionScope {
public:
WidgetHierarchyUpdatesSuspensionScope()
{
s_widgetHierarchyUpdateSuspendCount++;
}
~WidgetHierarchyUpdatesSuspensionScope()
{
ASSERT(s_widgetHierarchyUpdateSuspendCount);
if (s_widgetHierarchyUpdateSuspendCount == 1 && s_haveScheduledWidgetToMove)
moveWidgets();
s_widgetHierarchyUpdateSuspendCount--;
}
static bool isSuspended() { return s_widgetHierarchyUpdateSuspendCount; }
static void scheduleWidgetToMove(Widget&, LocalFrameView*);
private:
using WidgetToParentMap = UncheckedKeyHashMap<RefPtr<Widget>, SingleThreadWeakPtr<LocalFrameView>>;
static WidgetToParentMap& widgetNewParentMap();
WEBCORE_EXPORT void moveWidgets();
WEBCORE_EXPORT static unsigned s_widgetHierarchyUpdateSuspendCount;
WEBCORE_EXPORT static bool s_haveScheduledWidgetToMove;
};
inline void WidgetHierarchyUpdatesSuspensionScope::scheduleWidgetToMove(Widget& widget, LocalFrameView* frame)
{
s_haveScheduledWidgetToMove = true;
widgetNewParentMap().set(&widget, frame);
}
class RenderWidget : public RenderReplaced, private OverlapTestRequestClient, public RefCounted<RenderWidget> {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(RenderWidget);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(RenderWidget);
public:
virtual ~RenderWidget();
HTMLFrameOwnerElement& frameOwnerElement() const { return downcast<HTMLFrameOwnerElement>(nodeForNonAnonymous()); }
Ref<HTMLFrameOwnerElement> protectedFrameOwnerElement() const { return frameOwnerElement(); }
Widget* widget() const { return m_widget.get(); }
RefPtr<Widget> protectedWidget() const { return m_widget; }
WEBCORE_EXPORT void setWidget(RefPtr<Widget>&&);
static RenderWidget* find(const Widget&);
enum class ChildWidgetState { Valid, Destroyed };
ChildWidgetState updateWidgetPosition() WARN_UNUSED_RETURN;
WEBCORE_EXPORT IntRect windowClipRect() const;
virtual bool requiresAcceleratedCompositing() const;
RemoteFrame* remoteFrame() const;
protected:
RenderWidget(Type, HTMLFrameOwnerElement&, RenderStyle&&);
void willBeDestroyed() override;
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) final;
void layout() override;
void paint(PaintInfo&, const LayoutPoint&) override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
bool requiresLayer() const override;
private:
void element() const = delete;
bool needsPreferredWidthsRecalculation() const final;
RenderBox* embeddedContentBox() const final;
void setSelectionState(HighlightState) final;
void setOverlapTestResult(bool) final;
bool setWidgetGeometry(const LayoutRect&);
bool updateWidgetGeometry();
void paintContents(PaintInfo&, const LayoutPoint&);
RefPtr<Widget> m_widget;
IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderWidget, isRenderWidget())
|
