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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/csspaint/CSSPaintDefinition.h" | 5 #include "modules/csspaint/CSSPaintDefinition.h" |
6 | 6 |
7 #include "bindings/core/v8/ScriptState.h" | 7 #include "bindings/core/v8/ScriptState.h" |
8 #include "bindings/core/v8/V8Binding.h" | |
9 #include "bindings/core/v8/V8BindingMacros.h" | |
10 #include "bindings/core/v8/V8ObjectConstructor.h" | |
11 #include "core/dom/ExecutionContext.h" | |
12 #include "core/frame/ConsoleTypes.h" | |
13 #include "core/inspector/ConsoleMessage.h" | |
14 #include "modules/csspaint/Geometry.h" | |
15 #include "modules/csspaint/PaintRenderingContext2D.h" | |
16 #include "platform/ScriptForbiddenScope.h" | |
17 #include "platform/graphics/ImageBuffer.h" | |
18 #include "platform/graphics/PaintGeneratedImage.h" | |
19 #include "platform/graphics/RecordingImageBufferSurface.h" | |
20 #include "platform/graphics/UnacceleratedImageBufferSurface.h" | |
8 | 21 |
9 namespace blink { | 22 namespace blink { |
10 | 23 |
24 namespace { | |
25 | |
26 // TODO(ikilpatrick): Modify RecordingImageBufferSurface so that it cannot | |
27 // fallback to a UnacceleratedImageBufferSurface. | |
28 class UnacceleratedSurfaceFactory : public RecordingImageBufferFallbackSurfaceFa ctory { | |
29 public: | |
30 virtual PassOwnPtr<ImageBufferSurface> createSurface(const IntSize& size, Op acityMode opacityMode) | |
31 { | |
32 return adoptPtr(new UnacceleratedImageBufferSurface(size, opacityMode)); | |
33 } | |
34 | |
35 virtual ~UnacceleratedSurfaceFactory() { } | |
36 }; | |
37 | |
38 } // namespace | |
39 | |
11 CSSPaintDefinition* CSSPaintDefinition::create(ScriptState* scriptState, v8::Loc al<v8::Function> constructor, v8::Local<v8::Function> paint) | 40 CSSPaintDefinition* CSSPaintDefinition::create(ScriptState* scriptState, v8::Loc al<v8::Function> constructor, v8::Local<v8::Function> paint) |
12 { | 41 { |
13 return new CSSPaintDefinition(scriptState, constructor, paint); | 42 return new CSSPaintDefinition(scriptState, constructor, paint); |
14 } | 43 } |
15 | 44 |
16 CSSPaintDefinition::CSSPaintDefinition(ScriptState* scriptState, v8::Local<v8::F unction> constructor, v8::Local<v8::Function> paint) | 45 CSSPaintDefinition::CSSPaintDefinition(ScriptState* scriptState, v8::Local<v8::F unction> constructor, v8::Local<v8::Function> paint) |
17 : m_scriptState(scriptState) | 46 : m_scriptState(scriptState) |
18 , m_constructor(scriptState->isolate(), constructor) | 47 , m_constructor(scriptState->isolate(), constructor) |
19 , m_paint(scriptState->isolate(), paint) | 48 , m_paint(scriptState->isolate(), paint) |
20 { | 49 { |
21 } | 50 } |
22 | 51 |
23 CSSPaintDefinition::~CSSPaintDefinition() | 52 CSSPaintDefinition::~CSSPaintDefinition() |
24 { | 53 { |
25 } | 54 } |
26 | 55 |
56 PassRefPtr<Image> CSSPaintDefinition::paint(const IntSize& size) | |
57 { | |
58 ScriptState::Scope scope(m_scriptState.get()); | |
59 | |
60 maybeCreatePaintInstance(); | |
61 | |
62 v8::Isolate* isolate = m_scriptState->isolate(); | |
63 v8::Local<v8::Object> instance = m_instance.newLocal(isolate); | |
64 | |
65 // We may have failed to create an instance class, in which case produce an | |
66 // invalid image. | |
67 if (isUndefinedOrNull(instance)) | |
68 return nullptr; | |
69 | |
70 PaintRenderingContext2D* renderingContext = PaintRenderingContext2D::create( | |
71 ImageBuffer::create(adoptPtr(new RecordingImageBufferSurface(size, adopt Ptr(new UnacceleratedSurfaceFactory()))))); | |
72 Geometry* geometry = Geometry::create(size); | |
73 | |
74 v8::Local<v8::Value> argv[] = { | |
75 toV8(renderingContext, m_scriptState->context()->Global(), isolate), | |
76 toV8(geometry, m_scriptState->context()->Global(), isolate) | |
77 }; | |
78 | |
79 v8::Local<v8::Function> paint = m_paint.newLocal(isolate); | |
80 | |
81 v8::TryCatch block(isolate); | |
82 V8ScriptRunner::callFunction(paint, m_scriptState->getExecutionContext(), in stance, 2, argv, isolate); | |
83 | |
84 // The paint function may have produced an error, in which case produce an | |
85 // invalid image. | |
86 if (block.HasCaught()) { | |
87 return nullptr; | |
88 } | |
89 | |
90 return PaintGeneratedImage::create(renderingContext->imageBuffer()->getPictu re(), size); | |
91 } | |
92 | |
93 void CSSPaintDefinition::maybeCreatePaintInstance() | |
94 { | |
95 DCHECK(!m_invalidConstructor || !m_instance.isEmpty()); | |
96 | |
97 if (m_invalidConstructor) | |
haraken
2016/04/12 00:44:20
I'd replace m_invalidConstructor with m_didCallCon
ikilpatrick
2016/04/12 03:08:09
Yup we just call the constructor once. In the spec
| |
98 return; | |
99 | |
100 if (!m_instance.isEmpty()) | |
101 return; | |
102 | |
103 v8::Isolate* isolate = m_scriptState->isolate(); | |
104 v8::Local<v8::Function> constructor = m_constructor.newLocal(isolate); | |
105 DCHECK(!isUndefinedOrNull(constructor)); | |
106 | |
107 v8::Local<v8::Object> paintInstance; | |
108 if (!V8ObjectConstructor::newInstance(isolate, constructor).ToLocal(&paintIn stance)) { | |
109 m_invalidConstructor = true; | |
110 } else { | |
111 m_instance.set(isolate, paintInstance); | |
112 } | |
113 } | |
114 | |
27 } // namespace blink | 115 } // namespace blink |
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