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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/PaintWorklet.h" | 5 #include "modules/csspaint/PaintWorklet.h" |
6 | 6 |
7 #include "bindings/core/v8/V8BindingForCore.h" | 7 #include "bindings/core/v8/V8BindingForCore.h" |
8 #include "core/dom/Document.h" | 8 #include "core/dom/Document.h" |
9 #include "core/frame/LocalFrame.h" | 9 #include "core/frame/LocalFrame.h" |
10 #include "modules/csspaint/PaintWorkletGlobalScope.h" | 10 #include "modules/csspaint/PaintWorkletGlobalScope.h" |
11 | 11 |
12 namespace blink { | 12 namespace blink { |
13 | 13 |
14 // static | 14 // static |
15 PaintWorklet* PaintWorklet::Create(LocalFrame* frame) { | 15 PaintWorklet* PaintWorklet::Create(LocalFrame* frame) { |
16 return new PaintWorklet(frame); | 16 return new PaintWorklet(frame); |
17 } | 17 } |
18 | 18 |
19 PaintWorklet::PaintWorklet(LocalFrame* frame) | 19 PaintWorklet::PaintWorklet(LocalFrame* frame) |
20 : MainThreadWorklet(frame), | 20 : MainThreadWorklet(frame), |
21 global_scope_proxy_( | 21 pending_generator_registry_(new PaintWorkletPendingGeneratorRegistry) {} |
22 WTF::MakeUnique<PaintWorkletGlobalScopeProxy>(frame)) {} | |
23 | 22 |
24 PaintWorklet::~PaintWorklet() = default; | 23 PaintWorklet::~PaintWorklet() = default; |
25 | 24 |
26 WorkletGlobalScopeProxy* PaintWorklet::GetWorkletGlobalScopeProxy() const { | 25 CSSPaintDefinition* PaintWorklet::FindDefinition(const String& name) { |
27 return global_scope_proxy_.get(); | 26 if (GetNumberOfGlobalScopes() == 0) |
28 } | 27 return nullptr; |
29 | 28 |
30 CSSPaintDefinition* PaintWorklet::FindDefinition(const String& name) { | 29 PaintWorkletGlobalScopeProxy* proxy = |
31 return global_scope_proxy_->FindDefinition(name); | 30 PaintWorkletGlobalScopeProxy::From(FindAvailableGlobalScope()); |
31 return proxy->FindDefinition(name); | |
32 } | 32 } |
33 | 33 |
34 void PaintWorklet::AddPendingGenerator(const String& name, | 34 void PaintWorklet::AddPendingGenerator(const String& name, |
35 CSSPaintImageGeneratorImpl* generator) { | 35 CSSPaintImageGeneratorImpl* generator) { |
36 return global_scope_proxy_->AddPendingGenerator(name, generator); | 36 if (GetNumberOfGlobalScopes() == 0) { |
37 pending_generator_registry_->AddPendingGenerator(name, generator); | |
38 return; | |
39 } | |
40 | |
41 PaintWorkletGlobalScopeProxy* proxy = | |
42 PaintWorkletGlobalScopeProxy::From(FindAvailableGlobalScope()); | |
43 proxy->AddPendingGenerator(name, generator); | |
37 } | 44 } |
38 | 45 |
39 DEFINE_TRACE(PaintWorklet) { | 46 DEFINE_TRACE(PaintWorklet) { |
47 visitor->Trace(pending_generator_registry_); | |
40 MainThreadWorklet::Trace(visitor); | 48 MainThreadWorklet::Trace(visitor); |
41 } | 49 } |
42 | 50 |
51 bool PaintWorklet::NeedsToCreateGlobalScope() { | |
52 // "The user agent must have, and select from at least two | |
53 // PaintWorkletGlobalScopes in the worklet's WorkletGlobalScopes list, unless | |
54 // the user agent is under memory constraints." | |
55 // https://drafts.css-houdini.org/css-paint-api-1/#drawing-an-image | |
56 // TODO(nhiroki): In the current impl, we create only one global scope. We | |
57 // should create at least two global scopes as the spec. | |
58 return !GetNumberOfGlobalScopes(); | |
59 } | |
60 | |
61 std::unique_ptr<WorkletGlobalScopeProxy> PaintWorklet::CreateGlobalScope() { | |
62 LocalFrame* frame = ToDocument(GetExecutionContext())->GetFrame(); | |
63 auto proxy = WTF::MakeUnique<PaintWorkletGlobalScopeProxy>(frame); | |
64 if (GetNumberOfGlobalScopes() == 0) { | |
kouhei (in TOK)
2017/05/24 14:31:13
DCHECK(pending_generator_registry_)
nhiroki
2017/05/24 14:42:09
Done.
| |
65 proxy->global_scope()->SetPendingGeneratorRegistry( | |
66 pending_generator_registry_); | |
67 pending_generator_registry_ = nullptr; | |
68 } | |
kouhei (in TOK)
2017/05/24 14:31:13
else DCHECK(!pending_generator_registry_)
nhiroki
2017/05/24 14:42:09
Done (I omitted "else")
| |
69 return std::move(proxy); | |
70 } | |
71 | |
43 } // namespace blink | 72 } // namespace blink |
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