Title: [183985] trunk
Revision
183985
Author
[email protected]
Date
2015-05-07 23:51:55 -0700 (Thu, 07 May 2015)

Log Message

Throttle RequestAnimationFrame in subframes that are outside the viewport
https://bugs.webkit.org/show_bug.cgi?id=144718
<rdar://problem/20688782>

Reviewed by Simon Fraser.

Source/WebCore:

Throttle RequestAnimationFrame in subframes that are outside the
viewport or have "display: none" for performance and power.

Tests: fast/animation/request-animation-frame-throttle-subframe-display-none.html
       fast/animation/request-animation-frame-throttle-subframe.html

* dom/Document.h:
(WebCore::Document::scriptedAnimationController):
* dom/ScriptedAnimationController.cpp:
(WebCore::ScriptedAnimationController::setThrottled):
(WebCore::ScriptedAnimationController::isThrottled):
* dom/ScriptedAnimationController.h:
* page/FrameView.cpp:
(WebCore::FrameView::viewportContentsChanged):
(WebCore::FrameView::applyRecursivelyWithVisibleRect):
(WebCore::FrameView::resumeVisibleImageAnimations):
(WebCore::FrameView::updateScriptedAnimationsThrottlingState):
(WebCore::FrameView::resumeVisibleImageAnimationsIncludingSubframes):
(WebCore::FrameView::updateThrottledDOMTimersState):
(WebCore::FrameView::scrollPositionChanged): Deleted.
(WebCore::FrameView::sendResizeEventIfNeeded): Deleted.
* page/FrameView.h:
* testing/Internals.cpp:
(WebCore::Internals::isRequestAnimationFrameThrottled):
(WebCore::Internals::isTimerThrottled): Deleted.
* testing/Internals.h:
* testing/Internals.idl:

LayoutTests:

* fast/animation/request-animation-frame-throttle-subframe-display-none-expected.txt: Added.
* fast/animation/request-animation-frame-throttle-subframe-display-none.html: Added.
Add layout test to test that RequestAnimationFrame is properly throttled
in "display: none" subframes.

* fast/animation/request-animation-frame-throttle-subframe-expected.txt: Added.
* fast/animation/request-animation-frame-throttle-subframe.html: Added.
Add layout test to test that RequestAnimationFrame is properly throttled
in frames that are outside the viewport.

* fast/animation/resources/requestAnimationFrame-frame-2.html: Added.
* fast/animation/resources/requestAnimationFrame-frame.html: Added.

Modified Paths

Added Paths

Diff

Modified: trunk/LayoutTests/ChangeLog (183984 => 183985)


--- trunk/LayoutTests/ChangeLog	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/LayoutTests/ChangeLog	2015-05-08 06:51:55 UTC (rev 183985)
@@ -1,3 +1,24 @@
+2015-05-07  Chris Dumez  <[email protected]>
+
+        Throttle RequestAnimationFrame in subframes that are outside the viewport
+        https://bugs.webkit.org/show_bug.cgi?id=144718
+        <rdar://problem/20688782>
+
+        Reviewed by Simon Fraser.
+
+        * fast/animation/request-animation-frame-throttle-subframe-display-none-expected.txt: Added.
+        * fast/animation/request-animation-frame-throttle-subframe-display-none.html: Added.
+        Add layout test to test that RequestAnimationFrame is properly throttled
+        in "display: none" subframes.
+
+        * fast/animation/request-animation-frame-throttle-subframe-expected.txt: Added.
+        * fast/animation/request-animation-frame-throttle-subframe.html: Added.
+        Add layout test to test that RequestAnimationFrame is properly throttled
+        in frames that are outside the viewport.
+
+        * fast/animation/resources/requestAnimationFrame-frame-2.html: Added.
+        * fast/animation/resources/requestAnimationFrame-frame.html: Added.
+
 2015-05-07  Yoav Weiss  <[email protected]>
 
         Calculate source-size length as a float

Added: trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none-expected.txt (0 => 183985)


--- trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none-expected.txt	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none-expected.txt	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,19 @@
+Tests that requestAnimationFrame is throttled in subframes that are display:none
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Frame is initially visibile so requestAnimationFrame should not be throttled
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() became false
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is false
+Hiding subframe.
+testFrame.style.display = 'none';
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() became true
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is true
+Show subframe again
+testFrame.style.display = 'block';
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() became false
+PASS successfullyParsed is true
+
+TEST COMPLETE
+

Added: trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none.html (0 => 183985)


--- trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none.html	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-display-none.html	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+<body>
+<script src=""
+<script>
+description("Tests that requestAnimationFrame is throttled in subframes that are display:none");
+window.jsTestIsAsync = true;
+
+function checkSubframeThrottled()
+{
+    shouldBeTrue("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+
+    debug("Show subframe again");
+    evalAndLog("testFrame.style.display = 'block';");
+
+    shouldBecomeEqual("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()", "false", finishJSTest);
+}
+
+function hideFrame()
+{
+    shouldBeFalse("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+
+    debug("Hiding subframe.");
+    evalAndLog("testFrame.style.display = 'none';");
+
+    shouldBecomeEqual("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()", "true", checkSubframeThrottled);
+}
+
+function runTest()
+{
+    testFrame = document.getElementById("testFrame");
+    debug("Frame is initially visibile so requestAnimationFrame should not be throttled");
+    shouldBecomeEqual("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()", "false", hideFrame);
+}
+
+var i = 0;
+requestAnimationFrame(function() {
+    i++;
+});
+</script>
+<iframe id="testFrame" src="" _onload_="runTest()"></iframe>
+<script src=""
+</body>
+</html>

Added: trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-expected.txt (0 => 183985)


--- trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-expected.txt	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe-expected.txt	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,24 @@
+Tests that requestAnimationFrame is throttled in subframes that are outside the viewport
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Frame is initially outside the viewport so requestAnimationFrame should be throttled
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() became true
+PASS internals.isRequestAnimationFrameThrottled() is false
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is true
+PASS grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is true
+Scrolling frame into view.
+RequestAnimationFrame should no longer be throttled
+PASS internals.isRequestAnimationFrameThrottled() is false
+PASS grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is false
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is false
+Scrolling frame out of view again.
+PASS internals.isRequestAnimationFrameThrottled() is false
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() became true
+PASS testFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is true
+PASS grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled() is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+

Added: trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe.html (0 => 183985)


--- trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe.html	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/request-animation-frame-throttle-subframe.html	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html>
+<body>
+<script src=""
+<script>
+description("Tests that requestAnimationFrame is throttled in subframes that are outside the viewport");
+window.jsTestIsAsync = true;
+
+function checkSubframesThrottled()
+{
+    shouldBeTrue("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+    shouldBeTrue("grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+
+    finishJSTest();
+}
+
+function scrollFrameOutOfView()
+{
+    debug("Scrolling frame out of view again.");
+    window.scroll(0, 0);
+
+    shouldBeFalse("internals.isRequestAnimationFrameThrottled()");
+    shouldBecomeEqual("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()", "true", checkSubframesThrottled);
+}
+
+function scrollFrameIntoView()
+{
+    shouldBeFalse("internals.isRequestAnimationFrameThrottled()");
+    shouldBeTrue("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+    shouldBeTrue("grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+
+    debug("Scrolling frame into view.");
+    window.internals.scrollElementToRect(testFrame, 0, 0, 300, 300);
+
+    debug("RequestAnimationFrame should no longer be throttled");
+    shouldBeFalse("internals.isRequestAnimationFrameThrottled()");
+    shouldBeFalse("grandChildFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+    shouldBeFalse("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()");
+
+    scrollFrameOutOfView();
+}
+
+function runTest()
+{
+    testFrame = document.getElementById("testFrame");
+    grandChildFrame = testFrame.contentDocument.getElementById("grandChildFrame");
+    debug("Frame is initially outside the viewport so requestAnimationFrame should be throttled");
+    shouldBecomeEqual("testFrame.contentWindow.internals.isRequestAnimationFrameThrottled()", "true", scrollFrameIntoView);
+}
+
+var i = 0;
+requestAnimationFrame(function() {
+    i++;
+});
+</script>
+<div style="position: relative; width: 1600px; height: 2400px; background-color: green;">
+    <iframe id="testFrame" src="" style="position:absolute; left: 600px; top: 800px;" _onload_="runTest()"></iframe>
+</div>
+<script src=""
+</body>
+</html>

Added: trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame-2.html (0 => 183985)


--- trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame-2.html	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame-2.html	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<body>
+<script>
+var i = 0;
+requestAnimationFrame(function() {
+  i++;
+});
+</script>
+</body>
+</html>

Added: trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame.html (0 => 183985)


--- trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame.html	                        (rev 0)
+++ trunk/LayoutTests/fast/animation/resources/requestAnimationFrame-frame.html	2015-05-08 06:51:55 UTC (rev 183985)
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+<body>
+<iframe id="grandChildFrame" src=""
+<script>
+var i = 0;
+requestAnimationFrame(function() {
+  i++;
+});
+</script>
+</body>
+</html>

Modified: trunk/Source/WebCore/ChangeLog (183984 => 183985)


--- trunk/Source/WebCore/ChangeLog	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/ChangeLog	2015-05-08 06:51:55 UTC (rev 183985)
@@ -1,3 +1,39 @@
+2015-05-07  Chris Dumez  <[email protected]>
+
+        Throttle RequestAnimationFrame in subframes that are outside the viewport
+        https://bugs.webkit.org/show_bug.cgi?id=144718
+        <rdar://problem/20688782>
+
+        Reviewed by Simon Fraser.
+
+        Throttle RequestAnimationFrame in subframes that are outside the
+        viewport or have "display: none" for performance and power.
+
+        Tests: fast/animation/request-animation-frame-throttle-subframe-display-none.html
+               fast/animation/request-animation-frame-throttle-subframe.html
+
+        * dom/Document.h:
+        (WebCore::Document::scriptedAnimationController):
+        * dom/ScriptedAnimationController.cpp:
+        (WebCore::ScriptedAnimationController::setThrottled):
+        (WebCore::ScriptedAnimationController::isThrottled):
+        * dom/ScriptedAnimationController.h:
+        * page/FrameView.cpp:
+        (WebCore::FrameView::viewportContentsChanged):
+        (WebCore::FrameView::applyRecursivelyWithVisibleRect):
+        (WebCore::FrameView::resumeVisibleImageAnimations):
+        (WebCore::FrameView::updateScriptedAnimationsThrottlingState):
+        (WebCore::FrameView::resumeVisibleImageAnimationsIncludingSubframes):
+        (WebCore::FrameView::updateThrottledDOMTimersState):
+        (WebCore::FrameView::scrollPositionChanged): Deleted.
+        (WebCore::FrameView::sendResizeEventIfNeeded): Deleted.
+        * page/FrameView.h:
+        * testing/Internals.cpp:
+        (WebCore::Internals::isRequestAnimationFrameThrottled):
+        (WebCore::Internals::isTimerThrottled): Deleted.
+        * testing/Internals.h:
+        * testing/Internals.idl:
+
 2015-05-07  Yoav Weiss  <[email protected]>
 
         Calculate source-size length as a float

Modified: trunk/Source/WebCore/dom/Document.h (183984 => 183985)


--- trunk/Source/WebCore/dom/Document.h	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/dom/Document.h	2015-05-08 06:51:55 UTC (rev 183985)
@@ -948,6 +948,9 @@
 
     virtual void postTask(Task) override final; // Executes the task on context's thread asynchronously.
 
+#if ENABLE(REQUEST_ANIMATION_FRAME)
+    ScriptedAnimationController* scriptedAnimationController() { return m_scriptedAnimationController.get(); }
+#endif
     void suspendScriptedAnimationControllerCallbacks();
     void resumeScriptedAnimationControllerCallbacks();
     void scriptedAnimationControllerSetThrottled(bool);

Modified: trunk/Source/WebCore/dom/ScriptedAnimationController.cpp (183984 => 183985)


--- trunk/Source/WebCore/dom/ScriptedAnimationController.cpp	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/dom/ScriptedAnimationController.cpp	2015-05-08 06:51:55 UTC (rev 183985)
@@ -34,6 +34,8 @@
 #include "DocumentLoader.h"
 #include "FrameView.h"
 #include "InspectorInstrumentation.h"
+#include "Logging.h"
+#include "MainFrame.h"
 #include "RequestAnimationFrameCallback.h"
 #include "Settings.h"
 #include <wtf/Ref.h>
@@ -84,6 +86,8 @@
     if (m_isThrottled == isThrottled)
         return;
 
+    LOG(Animations, "%p - Setting RequestAnimationFrame throttling state to %d in frame %p (isMainFrame: %d)", this, isThrottled, m_document->frame(), m_document->frame() ? m_document->frame()->isMainFrame() : 0);
+
     m_isThrottled = isThrottled;
     if (m_animationTimer.isActive()) {
         m_animationTimer.stop();
@@ -94,6 +98,15 @@
 #endif
 }
 
+bool ScriptedAnimationController::isThrottled() const
+{
+#if USE(REQUEST_ANIMATION_FRAME_TIMER) && USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
+    return m_isThrottled;
+#else
+    return false;
+#endif
+}
+
 ScriptedAnimationController::CallbackId ScriptedAnimationController::registerCallback(PassRefPtr<RequestAnimationFrameCallback> callback)
 {
     ScriptedAnimationController::CallbackId id = ++m_nextCallbackId;

Modified: trunk/Source/WebCore/dom/ScriptedAnimationController.h (183984 => 183985)


--- trunk/Source/WebCore/dom/ScriptedAnimationController.h	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/dom/ScriptedAnimationController.h	2015-05-08 06:51:55 UTC (rev 183985)
@@ -68,6 +68,7 @@
     void suspend();
     void resume();
     void setThrottled(bool);
+    WEBCORE_EXPORT bool isThrottled() const;
 
     void windowScreenDidChange(PlatformDisplayID);
 

Modified: trunk/Source/WebCore/page/FrameView.cpp (183984 => 183985)


--- trunk/Source/WebCore/page/FrameView.cpp	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/page/FrameView.cpp	2015-05-08 06:51:55 UTC (rev 183985)
@@ -80,6 +80,7 @@
 #include "RenderWidget.h"
 #include "SVGDocument.h"
 #include "SVGSVGElement.h"
+#include "ScriptedAnimationController.h"
 #include "ScrollAnimator.h"
 #include "ScrollingCoordinator.h"
 #include "Settings.h"
@@ -1755,10 +1756,18 @@
 
 void FrameView::viewportContentsChanged()
 {
+    if (!frame().view()) {
+        // The frame is being destroyed.
+        return;
+    }
+
     // When the viewport contents changes (scroll, resize, style recalc, layout, ...),
     // check if we should resume animated images or unthrottle DOM timers.
-    resumeVisibleImageAnimationsIncludingSubframes();
-    updateThrottledDOMTimersState();
+    applyRecursivelyWithVisibleRect([] (FrameView& frameView, const IntRect& visibleRect) {
+        frameView.resumeVisibleImageAnimations(visibleRect);
+        frameView.updateThrottledDOMTimersState(visibleRect);
+        frameView.updateScriptedAnimationsThrottlingState(visibleRect);
+    });
 }
 
 bool FrameView::fixedElementsLayoutRelativeToFrame() const
@@ -2095,28 +2104,60 @@
     viewportContentsChanged();
 }
 
-void FrameView::resumeVisibleImageAnimationsIncludingSubframes()
+void FrameView::applyRecursivelyWithVisibleRect(const std::function<void (FrameView& frameView, const IntRect& visibleRect)>& apply)
 {
-    auto* renderView = frame().contentRenderer();
-    if (!renderView)
-        return;
-
     IntRect windowClipRect = this->windowClipRect();
     auto visibleRect = windowToContents(windowClipRect);
-    if (visibleRect.isEmpty())
-        return;
+    apply(*this, visibleRect);
 
-    // Resume paused image animations in this frame.
-    renderView->resumePausedImageAnimationsIfNeeded(visibleRect);
-
     // Recursive call for subframes. We cache the current FrameView's windowClipRect to avoid recomputing it for every subframe.
     TemporaryChange<IntRect*> windowClipRectCache(m_cachedWindowClipRect, &windowClipRect);
     for (Frame* childFrame = frame().tree().firstChild(); childFrame; childFrame = childFrame->tree().nextSibling()) {
         if (auto* childView = childFrame->view())
-            childView->resumeVisibleImageAnimationsIncludingSubframes();
+            childView->applyRecursivelyWithVisibleRect(apply);
     }
 }
 
+void FrameView::resumeVisibleImageAnimations(const IntRect& visibleRect)
+{
+    if (visibleRect.isEmpty())
+        return;
+
+    if (auto* renderView = frame().contentRenderer())
+        renderView->resumePausedImageAnimationsIfNeeded(visibleRect);
+}
+
+void FrameView::updateScriptedAnimationsThrottlingState(const IntRect& visibleRect)
+{
+#if ENABLE(REQUEST_ANIMATION_FRAME)
+    if (frame().isMainFrame())
+        return;
+
+    auto* document = frame().document();
+    if (!document)
+        return;
+
+    auto* scriptedAnimationController = document->scriptedAnimationController();
+    if (!scriptedAnimationController)
+        return;
+
+    // FIXME: This doesn't work for subframes of a "display: none" frame because
+    // they have a non-null ownerRenderer.
+    bool shouldThrottle = !frame().ownerRenderer() || visibleRect.isEmpty();
+    scriptedAnimationController->setThrottled(shouldThrottle);
+#else
+    UNUSED_PARAM(visibleRect);
+#endif
+}
+
+
+void FrameView::resumeVisibleImageAnimationsIncludingSubframes()
+{
+    applyRecursivelyWithVisibleRect([] (FrameView& frameView, const IntRect& visibleRect) {
+        frameView.resumeVisibleImageAnimations(visibleRect);
+    });
+}
+
 void FrameView::updateLayerPositionsAfterScrolling()
 {
     // If we're scrolling as a result of updating the view size after layout, we'll update widgets and layer positions soon anyway.
@@ -3059,13 +3100,11 @@
     m_throttledTimers.remove(timer);
 }
 
-void FrameView::updateThrottledDOMTimersState()
+void FrameView::updateThrottledDOMTimersState(const IntRect& visibleRect)
 {
     if (m_throttledTimers.isEmpty())
         return;
 
-    IntRect visibleRect = windowToContents(windowClipRect());
-
     // Do not iterate over the HashSet because calling DOMTimer::updateThrottlingStateAfterViewportChange()
     // may cause timers to remove themselves from it while we are iterating.
     Vector<DOMTimer*> timers;

Modified: trunk/Source/WebCore/page/FrameView.h (183984 => 183985)


--- trunk/Source/WebCore/page/FrameView.h	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/page/FrameView.h	2015-05-08 06:51:55 UTC (rev 183985)
@@ -596,8 +596,12 @@
     void forceLayoutParentViewIfNeeded();
     void performPostLayoutTasks();
     void autoSizeIfEnabled();
-    void updateThrottledDOMTimersState();
 
+    void applyRecursivelyWithVisibleRect(const std::function<void (FrameView& frameView, const IntRect& visibleRect)>&);
+    void updateThrottledDOMTimersState(const IntRect& visibleRect);
+    void resumeVisibleImageAnimations(const IntRect& visibleRect);
+    void updateScriptedAnimationsThrottlingState(const IntRect& visibleRect);
+
     void updateLayerFlushThrottling();
     WEBCORE_EXPORT void adjustTiledBackingCoverage();
 

Modified: trunk/Source/WebCore/testing/Internals.cpp (183984 => 183985)


--- trunk/Source/WebCore/testing/Internals.cpp	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/testing/Internals.cpp	2015-05-08 06:51:55 UTC (rev 183985)
@@ -98,6 +98,7 @@
 #include "RenderedDocumentMarker.h"
 #include "RuntimeEnabledFeatures.h"
 #include "SchemeRegistry.h"
+#include "ScriptedAnimationController.h"
 #include "ScrollingCoordinator.h"
 #include "SerializedScriptValue.h"
 #include "Settings.h"
@@ -766,6 +767,18 @@
     return timer->m_throttleState == DOMTimer::ShouldThrottle;
 }
 
+bool Internals::isRequestAnimationFrameThrottled() const
+{
+#if ENABLE(REQUEST_ANIMATION_FRAME)
+    auto* scriptedAnimationController = contextDocument()->scriptedAnimationController();
+    if (!scriptedAnimationController)
+        return false;
+    return scriptedAnimationController->isThrottled();
+#else
+    return false;
+#endif
+}
+
 String Internals::visiblePlaceholder(Element* element)
 {
     if (is<HTMLTextFormControlElement>(element)) {

Modified: trunk/Source/WebCore/testing/Internals.h (183984 => 183985)


--- trunk/Source/WebCore/testing/Internals.h	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/testing/Internals.h	2015-05-08 06:51:55 UTC (rev 183985)
@@ -113,6 +113,7 @@
 
     // DOMTimers throttling testing.
     bool isTimerThrottled(int timeoutId, ExceptionCode&);
+    bool isRequestAnimationFrameThrottled() const;
 
     // Spatial Navigation testing.
     unsigned lastSpatialNavigationCandidateCount(ExceptionCode&) const;

Modified: trunk/Source/WebCore/testing/Internals.idl (183984 => 183985)


--- trunk/Source/WebCore/testing/Internals.idl	2015-05-08 06:50:57 UTC (rev 183984)
+++ trunk/Source/WebCore/testing/Internals.idl	2015-05-08 06:51:55 UTC (rev 183985)
@@ -279,6 +279,8 @@
     // Query if a timer is currently throttled, to debug timer throttling.
     [RaisesException] boolean isTimerThrottled(long timerHandle);
 
+    boolean isRequestAnimationFrameThrottled();
+
     [RaisesException] void startTrackingStyleRecalcs();
     [RaisesException] unsigned long styleRecalcCount();
 
_______________________________________________
webkit-changes mailing list
[email protected]
https://lists.webkit.org/mailman/listinfo/webkit-changes

Reply via email to