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
|
/*
* Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple 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.
*/
#ifndef TextAutoSizing_h
#define TextAutoSizing_h
#if ENABLE(IOS_TEXT_AUTOSIZING)
#include "RenderStyle.h"
#include <wtf/HashSet.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Document;
class Node;
class TextAutoSizingKey {
public:
TextAutoSizingKey();
TextAutoSizingKey(RenderStyle*, Document*);
~TextAutoSizingKey();
TextAutoSizingKey(const TextAutoSizingKey&);
TextAutoSizingKey& operator=(const TextAutoSizingKey&);
Document* doc() const { return m_doc; }
RenderStyle* style() const { return m_style; }
inline bool isValidDoc() const { return m_doc && m_doc != deletedKeyDoc(); }
inline bool isValidStyle() const { return m_style && m_style != deletedKeyStyle(); }
static Document* deletedKeyDoc() { return reinterpret_cast<Document*>(-1); }
static RenderStyle* deletedKeyStyle() { return reinterpret_cast<RenderStyle*>(-1); }
private:
void ref() const;
void deref() const;
RenderStyle* m_style;
Document* m_doc;
};
inline bool operator==(const TextAutoSizingKey& a, const TextAutoSizingKey& b)
{
if (a.isValidStyle() && b.isValidStyle())
return a.style()->equalForTextAutosizing(b.style());
return a.style() == b.style();
}
struct TextAutoSizingHash {
static unsigned hash(const TextAutoSizingKey& key) { return key.style()->hashForTextAutosizing(); }
static bool equal(const TextAutoSizingKey& a, const TextAutoSizingKey& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
class TextAutoSizingValue : public RefCounted<TextAutoSizingValue> {
public:
static Ref<TextAutoSizingValue> create()
{
return adoptRef(*new TextAutoSizingValue);
}
void addNode(Node*, float size);
bool adjustNodeSizes();
int numNodes() const;
void reset();
private:
TextAutoSizingValue() { }
HashSet<RefPtr<Node> > m_autoSizedNodes;
};
} // namespace WebCore
#endif // ENABLE(IOS_TEXT_AUTOSIZING)
#endif // TextAutoSizing_h
|
