160 lines
5.2 KiB
C++
160 lines
5.2 KiB
C++
/*
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* Copyright (C) 2011 Google Inc. All Rights Reserved.
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* Copyright (C) 2020 Metrological Group B.V.
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* Copyright (C) 2020 Igalia S.L.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "WorkerAnimationController.h"
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#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS)
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#include "Performance.h"
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#include "RequestAnimationFrameCallback.h"
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#include "WorkerGlobalScope.h"
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#include <wtf/Ref.h>
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namespace WebCore {
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Ref<WorkerAnimationController> WorkerAnimationController::create(WorkerGlobalScope& workerGlobalScope)
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{
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return adoptRef(*new WorkerAnimationController(workerGlobalScope));
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}
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WorkerAnimationController::WorkerAnimationController(WorkerGlobalScope& workerGlobalScope)
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: ActiveDOMObject(&workerGlobalScope)
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, m_workerGlobalScope(workerGlobalScope)
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, m_animationTimer(*this, &WorkerAnimationController::animationTimerFired)
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{
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suspendIfNeeded();
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}
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WorkerAnimationController::~WorkerAnimationController()
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{
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ASSERT(!hasPendingActivity());
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}
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const char* WorkerAnimationController::activeDOMObjectName() const
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{
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return "WorkerAnimationController";
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}
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bool WorkerAnimationController::virtualHasPendingActivity() const
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{
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return m_animationTimer.isActive();
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}
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void WorkerAnimationController::stop()
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{
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m_animationTimer.stop();
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}
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void WorkerAnimationController::suspend(ReasonForSuspension)
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{
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m_savedIsActive = hasPendingActivity();
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stop();
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}
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void WorkerAnimationController::resume()
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{
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if (m_savedIsActive) {
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m_savedIsActive = false;
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scheduleAnimation();
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}
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}
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WorkerAnimationController::CallbackId WorkerAnimationController::requestAnimationFrame(Ref<RequestAnimationFrameCallback>&& callback)
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{
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// FIXME: There's a lot of missing throttling behaviour that's present on DOMDocument
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WorkerAnimationController::CallbackId callbackId = ++m_nextAnimationCallbackId;
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callback->m_firedOrCancelled = false;
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callback->m_id = callbackId;
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m_animationCallbacks.append(WTFMove(callback));
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scheduleAnimation();
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return callbackId;
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}
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void WorkerAnimationController::cancelAnimationFrame(CallbackId callbackId)
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{
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for (size_t i = 0; i < m_animationCallbacks.size(); ++i) {
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auto& callback = m_animationCallbacks[i];
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if (callback->m_id == callbackId) {
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callback->m_firedOrCancelled = true;
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m_animationCallbacks.remove(i);
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return;
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}
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}
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}
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void WorkerAnimationController::scheduleAnimation()
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{
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if (!m_workerGlobalScope.settingsValues().requestAnimationFrameEnabled)
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return;
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if (m_animationTimer.isActive())
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return;
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Seconds animationInterval = RequestAnimationFrameCallback::fullSpeedAnimationInterval;
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Seconds scheduleDelay = std::max(animationInterval - Seconds::fromMilliseconds(m_workerGlobalScope.performance().now() - m_lastAnimationFrameTimestamp), 0_s);
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m_animationTimer.startOneShot(scheduleDelay);
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}
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void WorkerAnimationController::animationTimerFired()
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{
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m_lastAnimationFrameTimestamp = m_workerGlobalScope.performance().now();
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serviceRequestAnimationFrameCallbacks(m_lastAnimationFrameTimestamp);
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}
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void WorkerAnimationController::serviceRequestAnimationFrameCallbacks(DOMHighResTimeStamp timestamp)
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{
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if (!m_animationCallbacks.size() || !m_workerGlobalScope.settingsValues().requestAnimationFrameEnabled)
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return;
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// First, generate a list of callbacks to consider. Callbacks registered from this point
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// on are considered only for the "next" frame, not this one.
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CallbackList callbacks(m_animationCallbacks);
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for (auto& callback : callbacks) {
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if (callback->m_firedOrCancelled)
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continue;
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callback->m_firedOrCancelled = true;
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callback->handleEvent(timestamp);
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}
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// Remove any callbacks we fired from the list of pending callbacks.
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m_animationCallbacks.removeAllMatching([](auto& callback) {
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return callback->m_firedOrCancelled;
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});
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if (m_animationCallbacks.size())
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scheduleAnimation();
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}
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} // namespace WebCore
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#endif
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