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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "core/css/cssom/TransformValue.h" | |
6 | |
7 #include "core/css/CSSValueList.h" | |
8 #include "core/css/cssom/CSSTransformComponent.h" | |
9 | |
10 namespace blink { | |
11 | |
12 namespace { | |
13 | |
14 class TransformValueIterationSource final : public ValueIterable<CSSTransformCom
ponent*>::IterationSource { | |
15 public: | |
16 explicit TransformValueIterationSource(TransformValue* transformValue) | |
17 : m_transformValue(transformValue) | |
18 { | |
19 } | |
20 | |
21 bool next(ScriptState*, CSSTransformComponent*& value, ExceptionState&) over
ride | |
22 { | |
23 if (m_index >= m_transformValue->size()) { | |
24 return false; | |
25 } | |
26 value = m_transformValue->componentAtIndex(m_index); | |
27 return true; | |
28 } | |
29 | |
30 DEFINE_INLINE_VIRTUAL_TRACE() | |
31 { | |
32 visitor->trace(m_transformValue); | |
33 ValueIterable<CSSTransformComponent*>::IterationSource::trace(visitor); | |
34 } | |
35 | |
36 private: | |
37 const Member<TransformValue> m_transformValue; | |
38 }; | |
39 | |
40 } // namespace | |
41 | |
42 TransformValue* TransformValue::fromCSSValue(const CSSValue& cssValue) | |
43 { | |
44 if (!cssValue.isValueList()) { | |
45 // TODO(meade): Also need to check the separator here if we care. | |
46 return nullptr; | |
47 } | |
48 HeapVector<Member<CSSTransformComponent>> components; | |
49 for (const CSSValue* value : toCSSValueList(cssValue)) { | |
50 CSSTransformComponent* component = CSSTransformComponent::fromCSSValue(*
value); | |
51 if (!component) | |
52 return nullptr; | |
53 components.append(component); | |
54 } | |
55 return TransformValue::create(components); | |
56 } | |
57 | |
58 ValueIterable<CSSTransformComponent*>::IterationSource* TransformValue::startIte
ration(ScriptState*, ExceptionState&) | |
59 { | |
60 return new TransformValueIterationSource(this); | |
61 } | |
62 | |
63 bool TransformValue::is2D() const | |
64 { | |
65 for (size_t i = 0; i < m_transformComponents.size(); i++) { | |
66 if (!m_transformComponents[i]->is2DComponent()) { | |
67 return false; | |
68 } | |
69 } | |
70 return true; | |
71 } | |
72 | |
73 CSSValue* TransformValue::toCSSValue() const | |
74 { | |
75 CSSValueList* transformCSSValue = CSSValueList::createSpaceSeparated(); | |
76 for (size_t i = 0; i < m_transformComponents.size(); i++) { | |
77 transformCSSValue->append(*m_transformComponents[i]->toCSSValue()); | |
78 } | |
79 return transformCSSValue; | |
80 } | |
81 | |
82 } // namespace blink | |
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