зеркало из https://github.com/mozilla/pjs.git
Bug 541588: Hook up nsSMILAnimationController to nsRefreshDriver for scheduling samples. r=roc
This commit is contained in:
Daniel Holbert
Родитель
a836d78ee8
Коммит
11bb4d8513
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@ -1360,7 +1360,7 @@ protected:
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#ifdef MOZ_SMIL
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// SMIL Animation Controller, lazily-initialized in GetAnimationController
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nsAutoPtr<nsSMILAnimationController> mAnimationController;
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nsRefPtr<nsSMILAnimationController> mAnimationController;
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#endif // MOZ_SMIL
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// Table of element properties for this document.
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@ -51,16 +51,19 @@
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//----------------------------------------------------------------------
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// nsSMILAnimationController implementation
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// In my testing the minimum needed for smooth animation is 36 frames per
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// second which seems like a lot (Flash traditionally uses 14fps).
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//
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// Redrawing is synchronous. This is deliberate so that later we can tune the
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// timer based on how long the callback takes. To achieve 36fps we'd need 28ms
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// between frames. For now we set the timer interval to be a little less than
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// this (to allow for the render itself) and then let performance decay as the
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// image gets more complicated and render times increase.
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//
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const PRUint32 nsSMILAnimationController::kTimerInterval = 22;
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// Helper method
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static nsRefreshDriver*
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GetRefreshDriverForDoc(nsIDocument* aDoc)
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{
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nsIPresShell* shell = aDoc->GetPrimaryShell();
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if (!shell) {
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return nsnull;
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}
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nsPresContext* context = shell->GetPresContext();
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return context ? context->RefreshDriver() : nsnull;
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}
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//----------------------------------------------------------------------
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// ctors, dtors, factory methods
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@ -75,11 +78,7 @@ nsSMILAnimationController::nsSMILAnimationController()
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nsSMILAnimationController::~nsSMILAnimationController()
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{
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if (mTimer) {
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mTimer->Cancel();
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mTimer = nsnull;
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}
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StopSampling(GetRefreshDriverForDoc(mDocument));
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NS_ASSERTION(mAnimationElementTable.Count() == 0,
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"Animation controller shouldn't be tracking any animation"
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" elements when it dies");
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@ -105,9 +104,6 @@ nsSMILAnimationController::Init(nsIDocument* aDoc)
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{
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NS_ENSURE_ARG_POINTER(aDoc);
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mTimer = do_CreateInstance("@mozilla.org/timer;1");
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NS_ENSURE_TRUE(mTimer, NS_ERROR_OUT_OF_MEMORY);
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// Keep track of document, so we can traverse its set of animation elements
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mDocument = aDoc;
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@ -125,7 +121,7 @@ nsSMILAnimationController::Pause(PRUint32 aType)
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nsSMILTimeContainer::Pause(aType);
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if (mPauseState) {
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StopTimer();
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StopSampling(GetRefreshDriverForDoc(mDocument));
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}
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}
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@ -137,7 +133,8 @@ nsSMILAnimationController::Resume(PRUint32 aType)
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nsSMILTimeContainer::Resume(aType);
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if (wasPaused && !mPauseState && mChildContainerTable.Count()) {
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StartTimer();
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Sample(); // Run the first sample manually
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StartSampling(GetRefreshDriverForDoc(mDocument));
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}
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}
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@ -148,6 +145,20 @@ nsSMILAnimationController::GetParentTime() const
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return PR_Now() / PR_USEC_PER_MSEC;
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}
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//----------------------------------------------------------------------
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// nsARefreshObserver methods:
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NS_IMPL_ADDREF(nsSMILAnimationController)
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NS_IMPL_RELEASE(nsSMILAnimationController)
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void
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nsSMILAnimationController::WillRefresh(mozilla::TimeStamp aTime)
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{
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// XXXdholbert Eventually we should be sampling based on aTime. For now,
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// though, we keep track of the time on our own, and we just use
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// nsRefreshDriver for scheduling samples.
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Sample();
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}
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//----------------------------------------------------------------------
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// Animation element registration methods:
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@ -214,42 +225,29 @@ nsSMILAnimationController::Unlink()
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//----------------------------------------------------------------------
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// Timer-related implementation helpers
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/*static*/ void
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nsSMILAnimationController::Notify(nsITimer* timer, void* aClosure)
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void
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nsSMILAnimationController::StartSampling(nsRefreshDriver* aRefreshDriver)
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{
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nsSMILAnimationController* controller = (nsSMILAnimationController*)aClosure;
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NS_ASSERTION(controller->mTimer == timer,
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"nsSMILAnimationController::Notify called with incorrect timer");
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controller->Sample();
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NS_ASSERTION(mPauseState == 0, "Starting sampling but controller is paused");
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if (aRefreshDriver) {
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NS_ABORT_IF_FALSE(!GetRefreshDriverForDoc(mDocument) ||
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aRefreshDriver == GetRefreshDriverForDoc(mDocument),
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"Starting sampling with wrong refresh driver");
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aRefreshDriver->AddRefreshObserver(this, Flush_Style);
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}
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}
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nsresult
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nsSMILAnimationController::StartTimer()
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void
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nsSMILAnimationController::StopSampling(nsRefreshDriver* aRefreshDriver)
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{
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NS_ENSURE_TRUE(mTimer, NS_ERROR_FAILURE);
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NS_ASSERTION(mPauseState == 0, "Starting timer but controller is paused");
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// Run the first sample manually
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Sample();
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//
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// XXX Make this self-tuning. Sounds like control theory to me and not
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// something I'm familiar with.
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//
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return mTimer->InitWithFuncCallback(nsSMILAnimationController::Notify,
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this,
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kTimerInterval,
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nsITimer::TYPE_REPEATING_SLACK);
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}
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nsresult
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nsSMILAnimationController::StopTimer()
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{
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NS_ENSURE_TRUE(mTimer, NS_ERROR_FAILURE);
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return mTimer->Cancel();
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if (aRefreshDriver) {
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// NOTE: The document might already have been detached from its PresContext
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// (and RefreshDriver), which would make GetRefreshDriverForDoc return null.
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NS_ABORT_IF_FALSE(!GetRefreshDriverForDoc(mDocument) ||
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aRefreshDriver == GetRefreshDriverForDoc(mDocument),
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"Stopping sampling with wrong refresh driver");
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aRefreshDriver->RemoveRefreshObserver(this, Flush_Style);
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}
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}
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//----------------------------------------------------------------------
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@ -668,7 +666,8 @@ nsSMILAnimationController::AddChild(nsSMILTimeContainer& aChild)
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NS_ENSURE_TRUE(key,NS_ERROR_OUT_OF_MEMORY);
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if (!mPauseState && mChildContainerTable.Count() == 1) {
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StartTimer();
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Sample(); // Run the first sample manually
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StartSampling(GetRefreshDriverForDoc(mDocument));
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}
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return NS_OK;
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@ -680,6 +679,6 @@ nsSMILAnimationController::RemoveChild(nsSMILTimeContainer& aChild)
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mChildContainerTable.RemoveEntry(&aChild);
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if (!mPauseState && mChildContainerTable.Count() == 0) {
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StopTimer();
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StopSampling(GetRefreshDriverForDoc(mDocument));
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}
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}
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@ -48,6 +48,7 @@
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#include "nsSMILTimeContainer.h"
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#include "nsSMILCompositorTable.h"
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#include "nsSMILMilestone.h"
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#include "nsRefreshDriver.h"
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struct nsSMILTargetIdentifier;
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class nsISMILAnimationElement;
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@ -66,7 +67,8 @@ class nsIDocument;
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// a compound document. These time containers can be paused individually or
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// here, at the document level.
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//
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class nsSMILAnimationController : public nsSMILTimeContainer
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class nsSMILAnimationController : public nsSMILTimeContainer,
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public nsARefreshObserver
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{
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public:
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nsSMILAnimationController();
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@ -77,6 +79,12 @@ public:
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virtual void Resume(PRUint32 aType);
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virtual nsSMILTime GetParentTime() const;
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// nsARefreshObserver
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NS_IMETHOD_(nsrefcnt) AddRef();
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NS_IMETHOD_(nsrefcnt) Release();
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virtual void WillRefresh(mozilla::TimeStamp aTime);
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// Methods for registering and enumerating animation elements
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void RegisterAnimationElement(nsISMILAnimationElement* aAnimationElement);
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void UnregisterAnimationElement(nsISMILAnimationElement* aAnimationElement);
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@ -102,6 +110,11 @@ public:
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void Traverse(nsCycleCollectionTraversalCallback* aCallback);
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void Unlink();
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// Methods for controlling whether we're sampling
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// (Use to register/unregister us with the given nsRefreshDriver)
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void StartSampling(nsRefreshDriver* aRefreshDriver);
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void StopSampling(nsRefreshDriver* aRefreshDriver);
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protected:
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// Typedefs
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typedef nsPtrHashKey<nsSMILTimeContainer> TimeContainerPtrKey;
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@ -138,8 +151,6 @@ protected:
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// Timer-related implementation helpers
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static void Notify(nsITimer* aTimer, void* aClosure);
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nsresult StartTimer();
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nsresult StopTimer();
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// Sample-related callbacks and implementation helpers
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virtual void DoSample();
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@ -165,8 +176,10 @@ protected:
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virtual void RemoveChild(nsSMILTimeContainer& aChild);
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// Members
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nsAutoRefCnt mRefCnt;
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NS_DECL_OWNINGTHREAD
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static const PRUint32 kTimerInterval;
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nsCOMPtr<nsITimer> mTimer;
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AnimationElementHashtable mAnimationElementTable;
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TimeContainerHashtable mChildContainerTable;
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PRPackedBool mResampleNeeded;
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@ -1708,6 +1708,15 @@ PresShell::Init(nsIDocument* aDocument,
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}
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#endif
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#ifdef MOZ_SMIL
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if (mDocument->HasAnimationController()) {
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nsSMILAnimationController* animCtrl = mDocument->GetAnimationController();
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if (!animCtrl->IsPaused()) {
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animCtrl->StartSampling(GetPresContext()->RefreshDriver());
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}
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}
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#endif // MOZ_SMIL
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return NS_OK;
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}
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@ -1817,10 +1826,15 @@ PresShell::Destroy()
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mDocument->DeleteShell();
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}
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nsRefreshDriver* rd = GetPresContext()->RefreshDriver();
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if (mDocument->HasAnimationController()) {
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mDocument->GetAnimationController()->StopSampling(rd);
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}
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// Revoke any pending events. We need to do this and cancel pending reflows
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// before we destroy the frame manager, since apparently frame destruction
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// sometimes spins the event queue when plug-ins are involved(!).
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GetPresContext()->RefreshDriver()->RemoveRefreshObserver(this, Flush_Layout);
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rd->RemoveRefreshObserver(this, Flush_Layout);
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mResizeEvent.Revoke();
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if (mAsyncResizeTimerIsActive) {
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mAsyncResizeEventTimer->Cancel();
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