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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/animationworklet/animator.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_script_runner.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/animationworklet/animator_definition.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/to_v8.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
namespace blink {
Animator::Animator(v8::Isolate* isolate,
AnimatorDefinition* definition,
v8::Local<v8::Value> instance)
: definition_(definition),
instance_(isolate, instance),
effect_(new EffectProxy()) {}
Animator::~Animator() = default;
void Animator::Trace(blink::Visitor* visitor) {
visitor->Trace(definition_);
visitor->Trace(effect_);
visitor->Trace(instance_);
}
bool Animator::Animate(
ScriptState* script_state,
double current_time,
AnimationWorkletDispatcherOutput::AnimationState* output) {
v8::Isolate* isolate = script_state->GetIsolate();
v8::Local<v8::Value> instance = instance_.NewLocal(isolate);
v8::Local<v8::Function> animate = definition_->AnimateLocal(isolate);
if (IsUndefinedOrNull(instance) || IsUndefinedOrNull(animate))
return false;
ScriptState::Scope scope(script_state);
v8::TryCatch block(isolate);
block.SetVerbose(true);
// Prepare arguments (i.e., current time and effect) and pass them to animate
// callback.
v8::Local<v8::Value> v8_effect =
ToV8(effect_, script_state->GetContext()->Global(), isolate);
v8::Local<v8::Value> v8_current_time =
ToV8(current_time, script_state->GetContext()->Global(), isolate);
v8::Local<v8::Value> argv[] = {v8_current_time, v8_effect};
V8ScriptRunner::CallFunction(animate, ExecutionContext::From(script_state),
instance, arraysize(argv), argv, isolate);
// The animate function may have produced an error!
// TODO(majidvp): We should probably just throw here.
if (block.HasCaught())
return false;
output->local_time = effect_->local_time();
return true;
}
} // namespace blink
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