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1 /* | 1 /* |
2 * Copyright (C) 2007-2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2007-2009 Google Inc. All rights reserved. |
3 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. | 3 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions are | 6 * modification, are permitted provided that the following conditions are |
7 * met: | 7 * met: |
8 * | 8 * |
9 * * Redistributions of source code must retain the above copyright | 9 * * Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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40 #include "core/html/HTMLCanvasElement.h" | 40 #include "core/html/HTMLCanvasElement.h" |
41 #include "core/html/canvas/Canvas2DContextAttributes.h" | 41 #include "core/html/canvas/Canvas2DContextAttributes.h" |
42 #include "core/html/canvas/CanvasRenderingContext.h" | 42 #include "core/html/canvas/CanvasRenderingContext.h" |
43 #include "core/html/canvas/WebGLContextAttributes.h" | 43 #include "core/html/canvas/WebGLContextAttributes.h" |
44 #include "core/inspector/InspectorCanvasInstrumentation.h" | 44 #include "core/inspector/InspectorCanvasInstrumentation.h" |
45 #include "wtf/MathExtras.h" | 45 #include "wtf/MathExtras.h" |
46 #include "wtf/text/WTFString.h" | 46 #include "wtf/text/WTFString.h" |
47 | 47 |
48 namespace blink { | 48 namespace blink { |
49 | 49 |
50 void V8HTMLCanvasElement::getContextMethodCustom(const v8::FunctionCallbackInfo<
v8::Value>& info) | |
51 { | |
52 v8::Handle<v8::Object> holder = info.Holder(); | |
53 v8::Isolate* isolate = info.GetIsolate(); | |
54 HTMLCanvasElement* impl = V8HTMLCanvasElement::toImpl(holder); | |
55 TOSTRING_VOID(V8StringResource<>, contextIdResource, info[0]); | |
56 String contextId = contextIdResource; | |
57 RefPtrWillBeRawPtr<CanvasContextAttributes> attributes = nullptr; | |
58 if (contextId == "webgl" || contextId == "experimental-webgl") { | |
59 RefPtrWillBeRawPtr<WebGLContextAttributes> webGLAttributes = WebGLContex
tAttributes::create(); | |
60 if (info.Length() > 1 && info[1]->IsObject()) { | |
61 v8::Handle<v8::Object> jsAttributes = info[1]->ToObject(isolate); | |
62 v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha"); | |
63 if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get
(alpha))) | |
64 webGLAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue
()); | |
65 v8::Handle<v8::String> depth = v8AtomicString(isolate, "depth"); | |
66 if (jsAttributes->Has(depth) && !isUndefinedOrNull(jsAttributes->Get
(depth))) | |
67 webGLAttributes->setDepth(jsAttributes->Get(depth)->BooleanValue
()); | |
68 v8::Handle<v8::String> stencil = v8AtomicString(isolate, "stencil"); | |
69 if (jsAttributes->Has(stencil) && !isUndefinedOrNull(jsAttributes->G
et(stencil))) | |
70 webGLAttributes->setStencil(jsAttributes->Get(stencil)->BooleanV
alue()); | |
71 v8::Handle<v8::String> antialias = v8AtomicString(isolate, "antialia
s"); | |
72 if (jsAttributes->Has(antialias) && !isUndefinedOrNull(jsAttributes-
>Get(antialias))) | |
73 webGLAttributes->setAntialias(jsAttributes->Get(antialias)->Bool
eanValue()); | |
74 v8::Handle<v8::String> premultipliedAlpha = v8AtomicString(isolate,
"premultipliedAlpha"); | |
75 if (jsAttributes->Has(premultipliedAlpha) && !isUndefinedOrNull(jsAt
tributes->Get(premultipliedAlpha))) | |
76 webGLAttributes->setPremultipliedAlpha(jsAttributes->Get(premult
ipliedAlpha)->BooleanValue()); | |
77 v8::Handle<v8::String> preserveDrawingBuffer = v8AtomicString(isolat
e, "preserveDrawingBuffer"); | |
78 if (jsAttributes->Has(preserveDrawingBuffer) && !isUndefinedOrNull(j
sAttributes->Get(preserveDrawingBuffer))) | |
79 webGLAttributes->setPreserveDrawingBuffer(jsAttributes->Get(pres
erveDrawingBuffer)->BooleanValue()); | |
80 v8::Handle<v8::String> failIfMajorPerformanceCaveat = v8AtomicString
(isolate, "failIfMajorPerformanceCaveat"); | |
81 if (jsAttributes->Has(failIfMajorPerformanceCaveat) && !isUndefinedO
rNull(jsAttributes->Get(failIfMajorPerformanceCaveat))) | |
82 webGLAttributes->setFailIfMajorPerformanceCaveat(jsAttributes->G
et(failIfMajorPerformanceCaveat)->BooleanValue()); | |
83 } | |
84 attributes = webGLAttributes; | |
85 } else { | |
86 RefPtrWillBeRawPtr<Canvas2DContextAttributes> canvas2DAttributes = Canva
s2DContextAttributes::create(); | |
87 if (info.Length() > 1 && info[1]->IsObject()) { | |
88 v8::Handle<v8::Object> jsAttributes = info[1]->ToObject(isolate); | |
89 v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha"); | |
90 if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get
(alpha))) | |
91 canvas2DAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanVa
lue()); | |
92 } | |
93 attributes = canvas2DAttributes; | |
94 } | |
95 CanvasRenderingContext* result = impl->getContext(contextId, attributes.get(
)); | |
96 if (!result) { | |
97 v8SetReturnValueNull(info); | |
98 return; | |
99 } | |
100 if (result->is2d()) { | |
101 v8::Handle<v8::Value> v8Result = toV8(toCanvasRenderingContext2D(result)
, info.Holder(), info.GetIsolate()); | |
102 if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) { | |
103 ScriptState* scriptState = ScriptState::current(isolate); | |
104 ScriptValue context(scriptState, v8Result); | |
105 ScriptValue wrapped = InspectorInstrumentation::wrapCanvas2DRenderin
gContextForInstrumentation(&impl->document(), context); | |
106 if (!wrapped.isEmpty()) { | |
107 v8SetReturnValue(info, wrapped.v8Value()); | |
108 return; | |
109 } | |
110 } | |
111 v8SetReturnValue(info, v8Result); | |
112 return; | |
113 } | |
114 if (result->is3d()) { | |
115 v8::Handle<v8::Value> v8Result = toV8(toWebGLRenderingContext(result), i
nfo.Holder(), info.GetIsolate()); | |
116 if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) { | |
117 ScriptState* scriptState = ScriptState::current(isolate); | |
118 ScriptValue glContext(scriptState, v8Result); | |
119 ScriptValue wrapped = InspectorInstrumentation::wrapWebGLRenderingCo
ntextForInstrumentation(&impl->document(), glContext); | |
120 if (!wrapped.isEmpty()) { | |
121 v8SetReturnValue(info, wrapped.v8Value()); | |
122 return; | |
123 } | |
124 } | |
125 v8SetReturnValue(info, v8Result); | |
126 return; | |
127 } | |
128 ASSERT_NOT_REACHED(); | |
129 v8SetReturnValueNull(info); | |
130 } | |
131 | |
132 void V8HTMLCanvasElement::toDataURLMethodCustom(const v8::FunctionCallbackInfo<v
8::Value>& info) | 50 void V8HTMLCanvasElement::toDataURLMethodCustom(const v8::FunctionCallbackInfo<v
8::Value>& info) |
133 { | 51 { |
134 v8::Handle<v8::Object> holder = info.Holder(); | 52 v8::Handle<v8::Object> holder = info.Holder(); |
135 HTMLCanvasElement* canvas = V8HTMLCanvasElement::toImpl(holder); | 53 HTMLCanvasElement* canvas = V8HTMLCanvasElement::toImpl(holder); |
136 ExceptionState exceptionState(ExceptionState::ExecutionContext, "toDataURL",
"HTMLCanvasElement", info.Holder(), info.GetIsolate()); | 54 ExceptionState exceptionState(ExceptionState::ExecutionContext, "toDataURL",
"HTMLCanvasElement", info.Holder(), info.GetIsolate()); |
137 | 55 |
138 TOSTRING_VOID(V8StringResource<>, type, info[0]); | 56 TOSTRING_VOID(V8StringResource<>, type, info[0]); |
139 double quality; | 57 double quality; |
140 double* qualityPtr = 0; | 58 double* qualityPtr = 0; |
141 if (info.Length() > 1 && info[1]->IsNumber()) { | 59 if (info.Length() > 1 && info[1]->IsNumber()) { |
142 quality = info[1]->NumberValue(); | 60 quality = info[1]->NumberValue(); |
143 qualityPtr = &quality; | 61 qualityPtr = &quality; |
144 } | 62 } |
145 | 63 |
146 String result = canvas->toDataURL(type, qualityPtr, exceptionState); | 64 String result = canvas->toDataURL(type, qualityPtr, exceptionState); |
147 exceptionState.throwIfNeeded(); | 65 exceptionState.throwIfNeeded(); |
148 v8SetReturnValueStringOrUndefined(info, result, info.GetIsolate()); | 66 v8SetReturnValueStringOrUndefined(info, result, info.GetIsolate()); |
149 } | 67 } |
150 | 68 |
151 } // namespace blink | 69 } // namespace blink |
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