Bug 1151694 - Part 1 - Move CommonAnimationManager::sLayerAnimationInfo into LayerAnimationInfo.(cpp|h). r=bbirtles

layout/base/RestyleManager.cpp

@@ -15,6 +15,7 @@
 #include "AnimationCommon.h" // For GetLayerAnimationInfo
 #include "FrameLayerBuilder.h"
 #include "GeckoProfiler.h"
+#include "LayerAnimationInfo.h" // For LayerAnimationInfo::sRecords
 #include "nsStyleChangeList.h"
 #include "nsRuleProcessorData.h"
 #include "nsStyleUtil.h"
@@ -2666,10 +2667,10 @@ ElementRestyler::AddLayerChangesForAnimation()
     RestyleManager::GetMaxAnimationGenerationForFrame(mFrame);
 
   nsChangeHint hint = nsChangeHint(0);
-  const auto& layerInfo = CommonAnimationManager::sLayerAnimationInfo;
-  for (size_t i = 0; i < ArrayLength(layerInfo); i++) {
+  for (const LayerAnimationInfo::Record& layerInfo :
+         LayerAnimationInfo::sRecords) {
     Layer* layer =
-      FrameLayerBuilder::GetDedicatedLayer(mFrame, layerInfo[i].mLayerType);
+      FrameLayerBuilder::GetDedicatedLayer(mFrame, layerInfo.mLayerType);
     if (layer && frameGeneration > layer->GetAnimationGeneration()) {
       // If we have a transform layer but don't have any transform style, we
       // probably just removed the transform but haven't destroyed the layer
@@ -2678,11 +2679,11 @@ ElementRestyler::AddLayerChangesForAnimation()
       // so we can skip adding any change hint here. (If we *were* to add
       // nsChangeHint_UpdateTransformLayer, ApplyRenderingChangeToTree would
       // complain that we're updating a transform layer without a transform).
-      if (layerInfo[i].mLayerType == nsDisplayItem::TYPE_TRANSFORM &&
+      if (layerInfo.mLayerType == nsDisplayItem::TYPE_TRANSFORM &&
           !mFrame->StyleDisplay()->HasTransformStyle()) {
         continue;
       }
-      NS_UpdateHint(hint, layerInfo[i].mChangeHint);
+      NS_UpdateHint(hint, layerInfo.mChangeHint);
     }
   }
   if (hint) {

layout/build/nsLayoutStatics.cpp

@@ -68,6 +68,7 @@
 #include "FrameLayerBuilder.h"
 #include "mozilla/dom/RequestSyncWifiService.h"
 #include "AnimationCommon.h"
+#include "LayerAnimationInfo.h"
 
 #include "AudioChannelService.h"
 #include "mozilla/dom/DataStoreService.h"
@@ -311,7 +312,7 @@ nsLayoutStatics::Initialize()
 
 #ifdef DEBUG
   nsStyleContext::Initialize();
-  mozilla::CommonAnimationManager::Initialize();
+  mozilla::LayerAnimationInfo::Initialize();
 #endif
 
   MediaDecoder::InitStatics();

layout/style/AnimationCommon.cpp

@@ -18,6 +18,7 @@
 #include "nsIFrame.h"
 #include "nsLayoutUtils.h"
 #include "mozilla/LookAndFeel.h"
+#include "LayerAnimationInfo.h" // For LayerAnimationInfo::sRecords
 #include "Layers.h"
 #include "FrameLayerBuilder.h"
 #include "nsDisplayList.h"
@@ -406,30 +407,6 @@ CommonAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
   return collection->mStyleRule;
 }
 
-/* static */ const CommonAnimationManager::LayerAnimationRecord
-  CommonAnimationManager::sLayerAnimationInfo[] =
-    { { eCSSProperty_transform,
-        nsDisplayItem::TYPE_TRANSFORM,
-        nsChangeHint_UpdateTransformLayer },
-      { eCSSProperty_opacity,
-        nsDisplayItem::TYPE_OPACITY,
-        nsChangeHint_UpdateOpacityLayer } };
-
-/* static */ const CommonAnimationManager::LayerAnimationRecord*
-CommonAnimationManager::LayerAnimationRecordFor(nsCSSProperty aProperty)
-{
-  MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
-                                      CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
-             "unexpected property");
-  const auto& info = sLayerAnimationInfo;
-  for (size_t i = 0; i < ArrayLength(info); ++i) {
-    if (aProperty == info[i].mProperty) {
-      return &info[i];
-    }
-  }
-  return nullptr;
-}
-
 /* virtual */ void
 CommonAnimationManager::WillRefresh(TimeStamp aTime)
 {
@@ -455,42 +432,6 @@ CommonAnimationManager::WillRefresh(TimeStamp aTime)
   MaybeStartOrStopObservingRefreshDriver();
 }
 
-#ifdef DEBUG
-/* static */ void
-CommonAnimationManager::Initialize()
-{
-  const auto& info = CommonAnimationManager::sLayerAnimationInfo;
-  for (size_t i = 0; i < ArrayLength(info); i++) {
-    auto record = info[i];
-    MOZ_ASSERT(nsCSSProps::PropHasFlags(record.mProperty,
-                                        CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
-               "CSS property with entry in sLayerAnimationInfo does not "
-               "have the CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR flag");
-  }
-
-  // Check that every property with the flag for animating on the
-  // compositor has an entry in sLayerAnimationInfo.
-  for (nsCSSProperty prop = nsCSSProperty(0);
-       prop < eCSSProperty_COUNT;
-       prop = nsCSSProperty(prop + 1)) {
-    if (nsCSSProps::PropHasFlags(prop,
-                                 CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR)) {
-      bool found = false;
-      for (size_t i = 0; i < ArrayLength(info); i++) {
-        auto record = info[i];
-        if (record.mProperty == prop) {
-          found = true;
-          break;
-        }
-      }
-      MOZ_ASSERT(found,
-                 "CSS property with the CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR "
-                 "flag does not have an entry in sLayerAnimationInfo");
-    }
-  }
-}
-#endif
-
 NS_IMPL_ISUPPORTS(AnimValuesStyleRule, nsIStyleRule)
 
 /* virtual */ void
@@ -901,9 +842,8 @@ AnimationCollection::CanThrottleAnimation(TimeStamp aTime)
     return false;
   }
 
-  const auto& info = CommonAnimationManager::sLayerAnimationInfo;
-  for (size_t i = 0; i < ArrayLength(info); i++) {
-    auto record = info[i];
+  for (const LayerAnimationInfo::Record& record :
+        LayerAnimationInfo::sRecords) {
     // We only need to worry about *current* animations here.
     // - If we have a newly-finished animation, Animation::CanThrottle will
     //   detect that and force an unthrottled sample.

layout/style/AnimationCommon.h

@@ -65,10 +65,6 @@ public:
   // nsARefreshObserver
   void WillRefresh(TimeStamp aTime) override;
 
-#ifdef DEBUG
-  static void Initialize();
-#endif
-
   // NOTE:  This can return null after Disconnect().
   nsPresContext* PresContext() const { return mPresContext; }
 
@@ -120,18 +116,6 @@ public:
     nsChangeHint mChangeHint;
   };
 
-protected:
-  static const size_t kLayerRecords = 2;
-
-public:
-  static const LayerAnimationRecord sLayerAnimationInfo[kLayerRecords];
-
-  // Will return non-null for any property with the
-  // CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR flag; should only be called
-  // on such properties.
-  static const LayerAnimationRecord*
-    LayerAnimationRecordFor(nsCSSProperty aProperty);
-
 protected:
   virtual ~CommonAnimationManager();
 

layout/style/LayerAnimationInfo.cpp

@@ -0,0 +1,53 @@
+/* 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 "LayerAnimationInfo.h"
+
+#include "nsCSSProps.h" // For nsCSSProps::PropHasFlags
+
+namespace mozilla {
+
+/* static */ const LayerAnimationInfo::Record LayerAnimationInfo::sRecords[] =
+  { { eCSSProperty_transform,
+      nsDisplayItem::TYPE_TRANSFORM,
+      nsChangeHint_UpdateTransformLayer },
+    { eCSSProperty_opacity,
+      nsDisplayItem::TYPE_OPACITY,
+      nsChangeHint_UpdateOpacityLayer } };
+
+#ifdef DEBUG
+/* static */ void
+LayerAnimationInfo::Initialize()
+{
+  for (const Record& record : sRecords) {
+    MOZ_ASSERT(nsCSSProps::PropHasFlags(record.mProperty,
+                                        CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
+               "CSS property with entry in LayerAnimation::sRecords does not "
+               "have the CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR flag");
+  }
+
+  // Check that every property with the flag for animating on the
+  // compositor has an entry in LayerAnimationInfo::sRecords.
+  for (nsCSSProperty prop = nsCSSProperty(0);
+       prop < eCSSProperty_COUNT;
+       prop = nsCSSProperty(prop + 1)) {
+    if (nsCSSProps::PropHasFlags(prop,
+                                 CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR)) {
+      bool found = false;
+      for (const Record& record : sRecords) {
+        if (record.mProperty == prop) {
+          found = true;
+          break;
+        }
+      }
+      MOZ_ASSERT(found,
+                 "CSS property with the CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR "
+                 "flag does not have an entry in LayerAnimationInfo::sRecords");
+    }
+  }
+}
+#endif
+
+} // namespace mozilla

layout/style/LayerAnimationInfo.h

@@ -0,0 +1,33 @@
+/* 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/. */
+
+#ifndef mozilla_LayerAnimationInfo_h
+#define mozilla_LayerAnimationInfo_h
+
+#include "nsChangeHint.h"
+#include "nsCSSProperty.h"
+#include "nsDisplayList.h" // For nsDisplayItem::Type
+
+namespace mozilla {
+
+struct LayerAnimationInfo {
+#ifdef DEBUG
+  static void Initialize();
+#endif
+  // For CSS properties that may be animated on a separate layer, represents
+  // a record of the corresponding layer type and change hint.
+  struct Record {
+    nsCSSProperty mProperty;
+    nsDisplayItem::Type mLayerType;
+    nsChangeHint mChangeHint;
+  };
+
+  static const size_t kRecords = 2;
+  static const Record sRecords[kRecords];
+};
+
+} // namespace mozilla
+
+#endif /* !defined(mozilla_LayerAnimationInfo_h) */

layout/style/moz.build

@@ -85,6 +85,7 @@ EXPORTS.mozilla += [
     'CSSVariableResolver.h',
     'CSSVariableValues.h',
     'IncrementalClearCOMRuleArray.h',
+    'LayerAnimationInfo.h',
     'RuleNodeCacheConditions.h',
     'RuleProcessorCache.h',
     'StyleAnimationValue.h',
@@ -130,6 +131,7 @@ UNIFIED_SOURCES += [
     'FontFaceSetIterator.cpp',
     'ImageLoader.cpp',
     'IncrementalClearCOMRuleArray.cpp',
+    'LayerAnimationInfo.cpp',
     'Loader.cpp',
     'MediaQueryList.cpp',
     'nsAnimationManager.cpp',