зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
3.3 KiB
C++
122 строки
3.3 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "AnimationTimeline.h"
|
|
#include "mozilla/dom/AnimationTimelineBinding.h"
|
|
#include "AnimationUtils.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsRefreshDriver.h"
|
|
#include "nsDOMNavigationTiming.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(AnimationTimeline, mDocument, mWindow)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(AnimationTimeline, AddRef)
|
|
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(AnimationTimeline, Release)
|
|
|
|
JSObject*
|
|
AnimationTimeline::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return AnimationTimelineBinding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
Nullable<TimeDuration>
|
|
AnimationTimeline::GetCurrentTime() const
|
|
{
|
|
return ToTimelineTime(GetCurrentTimeStamp());
|
|
}
|
|
|
|
Nullable<double>
|
|
AnimationTimeline::GetCurrentTimeAsDouble() const
|
|
{
|
|
return AnimationUtils::TimeDurationToDouble(GetCurrentTime());
|
|
}
|
|
|
|
TimeStamp
|
|
AnimationTimeline::GetCurrentTimeStamp() const
|
|
{
|
|
nsRefreshDriver* refreshDriver = GetRefreshDriver();
|
|
TimeStamp refreshTime = refreshDriver
|
|
? refreshDriver->MostRecentRefresh()
|
|
: TimeStamp();
|
|
|
|
// Always return the same object to benefit from return-value optimization.
|
|
TimeStamp result = !refreshTime.IsNull()
|
|
? refreshTime
|
|
: mLastRefreshDriverTime;
|
|
|
|
// If we don't have a refresh driver and we've never had one use the
|
|
// timeline's zero time.
|
|
if (result.IsNull()) {
|
|
nsRefPtr<nsDOMNavigationTiming> timing = mDocument->GetNavigationTiming();
|
|
if (timing) {
|
|
result = timing->GetNavigationStartTimeStamp();
|
|
// Also, let this time represent the current refresh time. This way
|
|
// we'll save it as the last refresh time and skip looking up
|
|
// navigation timing each time.
|
|
refreshTime = result;
|
|
}
|
|
}
|
|
|
|
if (!refreshTime.IsNull()) {
|
|
mLastRefreshDriverTime = refreshTime;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
Nullable<TimeDuration>
|
|
AnimationTimeline::ToTimelineTime(const TimeStamp& aTimeStamp) const
|
|
{
|
|
Nullable<TimeDuration> result; // Initializes to null
|
|
if (aTimeStamp.IsNull()) {
|
|
return result;
|
|
}
|
|
|
|
nsRefPtr<nsDOMNavigationTiming> timing = mDocument->GetNavigationTiming();
|
|
if (MOZ_UNLIKELY(!timing)) {
|
|
return result;
|
|
}
|
|
|
|
result.SetValue(aTimeStamp - timing->GetNavigationStartTimeStamp());
|
|
return result;
|
|
}
|
|
|
|
TimeStamp
|
|
AnimationTimeline::ToTimeStamp(const TimeDuration& aTimeDuration) const
|
|
{
|
|
TimeStamp result;
|
|
nsRefPtr<nsDOMNavigationTiming> timing = mDocument->GetNavigationTiming();
|
|
if (MOZ_UNLIKELY(!timing)) {
|
|
return result;
|
|
}
|
|
|
|
result = timing->GetNavigationStartTimeStamp() + aTimeDuration;
|
|
return result;
|
|
}
|
|
|
|
nsRefreshDriver*
|
|
AnimationTimeline::GetRefreshDriver() const
|
|
{
|
|
nsIPresShell* presShell = mDocument->GetShell();
|
|
if (MOZ_UNLIKELY(!presShell)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (MOZ_UNLIKELY(!presContext)) {
|
|
return nullptr;
|
|
}
|
|
|
|
return presContext->RefreshDriver();
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|