gecko-dev/layout/style/AnimationCommon.cpp
Botond Ballo e7dbf26fb2 Bug 965022 - Use MOZ_FORMAT_PRINTF for [f]printf_stderr, and fix incorrect usages. r=jrmuizel
--HG--
extra : rebase_source : 667fc18943d84f1ae28579fc23f846f9350e6fe2
2014-08-26 17:14:51 -04:00

734 lines
23 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 "AnimationCommon.h"
#include "nsTransitionManager.h"
#include "nsAnimationManager.h"
#include "ActiveLayerTracker.h"
#include "gfxPlatform.h"
#include "nsRuleData.h"
#include "nsCSSPropertySet.h"
#include "nsCSSValue.h"
#include "nsCycleCollectionParticipant.h"
#include "nsStyleContext.h"
#include "nsIFrame.h"
#include "nsLayoutUtils.h"
#include "mozilla/LookAndFeel.h"
#include "Layers.h"
#include "FrameLayerBuilder.h"
#include "nsDisplayList.h"
#include "mozilla/MemoryReporting.h"
#include "RestyleManager.h"
#include "nsStyleSet.h"
#include "nsStyleChangeList.h"
using mozilla::layers::Layer;
using mozilla::dom::AnimationPlayer;
using mozilla::dom::Animation;
namespace mozilla {
/* static */ bool
IsGeometricProperty(nsCSSProperty aProperty)
{
switch (aProperty) {
case eCSSProperty_bottom:
case eCSSProperty_height:
case eCSSProperty_left:
case eCSSProperty_right:
case eCSSProperty_top:
case eCSSProperty_width:
return true;
default:
return false;
}
}
namespace css {
CommonAnimationManager::CommonAnimationManager(nsPresContext *aPresContext)
: mPresContext(aPresContext)
{
PR_INIT_CLIST(&mElementCollections);
}
CommonAnimationManager::~CommonAnimationManager()
{
NS_ABORT_IF_FALSE(!mPresContext, "Disconnect should have been called");
}
void
CommonAnimationManager::Disconnect()
{
// Content nodes might outlive the transition or animation manager.
RemoveAllElementCollections();
mPresContext = nullptr;
}
void
CommonAnimationManager::RemoveAllElementCollections()
{
while (!PR_CLIST_IS_EMPTY(&mElementCollections)) {
AnimationPlayerCollection* head =
static_cast<AnimationPlayerCollection*>(
PR_LIST_HEAD(&mElementCollections));
head->Destroy();
}
}
AnimationPlayerCollection*
CommonAnimationManager::GetAnimationsForCompositor(nsIContent* aContent,
nsIAtom* aElementProperty,
nsCSSProperty aProperty)
{
if (!aContent->MayHaveAnimations())
return nullptr;
AnimationPlayerCollection* collection =
static_cast<AnimationPlayerCollection*>(
aContent->GetProperty(aElementProperty));
if (!collection ||
!collection->HasAnimationOfProperty(aProperty) ||
!collection->CanPerformOnCompositorThread(
AnimationPlayerCollection::CanAnimate_AllowPartial)) {
return nullptr;
}
// This animation can be done on the compositor.
// Mark the frame as active, in case we are able to throttle this animation.
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(collection->mElement);
if (frame) {
if (aProperty == eCSSProperty_opacity) {
ActiveLayerTracker::NotifyAnimated(frame, eCSSProperty_opacity);
} else if (aProperty == eCSSProperty_transform) {
ActiveLayerTracker::NotifyAnimated(frame, eCSSProperty_transform);
}
}
return collection;
}
/*
* nsISupports implementation
*/
NS_IMPL_ISUPPORTS(CommonAnimationManager, nsIStyleRuleProcessor)
nsRestyleHint
CommonAnimationManager::HasStateDependentStyle(StateRuleProcessorData* aData)
{
return nsRestyleHint(0);
}
nsRestyleHint
CommonAnimationManager::HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData)
{
return nsRestyleHint(0);
}
bool
CommonAnimationManager::HasDocumentStateDependentStyle(StateRuleProcessorData* aData)
{
return false;
}
nsRestyleHint
CommonAnimationManager::HasAttributeDependentStyle(AttributeRuleProcessorData* aData)
{
return nsRestyleHint(0);
}
/* virtual */ bool
CommonAnimationManager::MediumFeaturesChanged(nsPresContext* aPresContext)
{
return false;
}
/* virtual */ size_t
CommonAnimationManager::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - mElementCollections
//
// The following members are not measured
// - mPresContext, because it's non-owning
return 0;
}
/* virtual */ size_t
CommonAnimationManager::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
void
CommonAnimationManager::AddStyleUpdatesTo(RestyleTracker& aTracker)
{
PRCList* next = PR_LIST_HEAD(&mElementCollections);
while (next != &mElementCollections) {
AnimationPlayerCollection* collection =
static_cast<AnimationPlayerCollection*>(next);
next = PR_NEXT_LINK(next);
dom::Element* elementToRestyle = collection->GetElementToRestyle();
if (elementToRestyle) {
nsRestyleHint rshint = collection->IsForTransitions()
? eRestyle_CSSTransitions : eRestyle_CSSAnimations;
aTracker.AddPendingRestyle(elementToRestyle, rshint, nsChangeHint(0));
}
}
}
/* static */ bool
CommonAnimationManager::ExtractComputedValueForTransition(
nsCSSProperty aProperty,
nsStyleContext* aStyleContext,
StyleAnimationValue& aComputedValue)
{
bool result = StyleAnimationValue::ExtractComputedValue(aProperty,
aStyleContext,
aComputedValue);
if (aProperty == eCSSProperty_visibility) {
NS_ABORT_IF_FALSE(aComputedValue.GetUnit() ==
StyleAnimationValue::eUnit_Enumerated,
"unexpected unit");
aComputedValue.SetIntValue(aComputedValue.GetIntValue(),
StyleAnimationValue::eUnit_Visibility);
}
return result;
}
NS_IMPL_ISUPPORTS(AnimValuesStyleRule, nsIStyleRule)
/* virtual */ void
AnimValuesStyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
{
nsStyleContext *contextParent = aRuleData->mStyleContext->GetParent();
if (contextParent && contextParent->HasPseudoElementData()) {
// Don't apply transitions or animations to things inside of
// pseudo-elements.
// FIXME (Bug 522599): Add tests for this.
return;
}
for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
PropertyValuePair &cv = mPropertyValuePairs[i];
if (aRuleData->mSIDs & nsCachedStyleData::GetBitForSID(
nsCSSProps::kSIDTable[cv.mProperty]))
{
nsCSSValue *prop = aRuleData->ValueFor(cv.mProperty);
if (prop->GetUnit() == eCSSUnit_Null) {
#ifdef DEBUG
bool ok =
#endif
StyleAnimationValue::UncomputeValue(cv.mProperty, cv.mValue, *prop);
NS_ABORT_IF_FALSE(ok, "could not store computed value");
}
}
}
}
#ifdef DEBUG
/* virtual */ void
AnimValuesStyleRule::List(FILE* out, int32_t aIndent) const
{
for (int32_t index = aIndent; --index >= 0; ) fputs(" ", out);
fputs("[anim values] { ", out);
for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
const PropertyValuePair &pair = mPropertyValuePairs[i];
nsAutoString value;
StyleAnimationValue::UncomputeValue(pair.mProperty, pair.mValue, value);
fprintf(out, "%s: %s; ", nsCSSProps::GetStringValue(pair.mProperty).get(),
NS_ConvertUTF16toUTF8(value).get());
}
fputs("}\n", out);
}
#endif
} /* end sub-namespace css */
bool
AnimationPlayerCollection::CanAnimatePropertyOnCompositor(
const dom::Element *aElement,
nsCSSProperty aProperty,
CanAnimateFlags aFlags)
{
bool shouldLog = nsLayoutUtils::IsAnimationLoggingEnabled();
if (!gfxPlatform::OffMainThreadCompositingEnabled()) {
if (shouldLog) {
nsCString message;
message.AppendLiteral("Performance warning: Compositor disabled");
LogAsyncAnimationFailure(message);
}
return false;
}
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(aElement);
if (IsGeometricProperty(aProperty)) {
if (shouldLog) {
nsCString message;
message.AppendLiteral("Performance warning: Async animation of geometric property '");
message.Append(nsCSSProps::GetStringValue(aProperty));
message.AppendLiteral("' is disabled");
LogAsyncAnimationFailure(message, aElement);
}
return false;
}
if (aProperty == eCSSProperty_transform) {
if (frame->Preserves3D() &&
frame->Preserves3DChildren()) {
if (shouldLog) {
nsCString message;
message.AppendLiteral("Gecko bug: Async animation of 'preserve-3d' transforms is not supported. See bug 779598");
LogAsyncAnimationFailure(message, aElement);
}
return false;
}
if (frame->IsSVGTransformed()) {
if (shouldLog) {
nsCString message;
message.AppendLiteral("Gecko bug: Async 'transform' animations of frames with SVG transforms is not supported. See bug 779599");
LogAsyncAnimationFailure(message, aElement);
}
return false;
}
if (aFlags & CanAnimate_HasGeometricProperty) {
if (shouldLog) {
nsCString message;
message.AppendLiteral("Performance warning: Async animation of 'transform' not possible due to presence of geometric properties");
LogAsyncAnimationFailure(message, aElement);
}
return false;
}
}
bool enabled = nsLayoutUtils::AreAsyncAnimationsEnabled();
if (!enabled && shouldLog) {
nsCString message;
message.AppendLiteral("Performance warning: Async animations are disabled");
LogAsyncAnimationFailure(message);
}
bool propertyAllowed = (aProperty == eCSSProperty_transform) ||
(aProperty == eCSSProperty_opacity) ||
(aFlags & CanAnimate_AllowPartial);
return enabled && propertyAllowed;
}
/* static */ bool
AnimationPlayerCollection::IsCompositorAnimationDisabledForFrame(
nsIFrame* aFrame)
{
void* prop = aFrame->Properties().Get(nsIFrame::RefusedAsyncAnimation());
return bool(reinterpret_cast<intptr_t>(prop));
}
bool
AnimationPlayerCollection::CanPerformOnCompositorThread(
CanAnimateFlags aFlags) const
{
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(mElement);
if (!frame) {
return false;
}
if (mElementProperty != nsGkAtoms::transitionsProperty &&
mElementProperty != nsGkAtoms::animationsProperty) {
if (nsLayoutUtils::IsAnimationLoggingEnabled()) {
nsCString message;
message.AppendLiteral("Gecko bug: Async animation of pseudoelements"
" not supported. See bug 771367 (");
message.Append(nsAtomCString(mElementProperty));
message.Append(")");
LogAsyncAnimationFailure(message, mElement);
}
return false;
}
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
const AnimationPlayer* player = mPlayers[playerIdx];
if (!player->IsRunning() || !player->GetSource()) {
continue;
}
const Animation* anim = player->GetSource();
for (size_t propIdx = 0, propEnd = anim->Properties().Length();
propIdx != propEnd; ++propIdx) {
if (IsGeometricProperty(anim->Properties()[propIdx].mProperty)) {
aFlags = CanAnimateFlags(aFlags | CanAnimate_HasGeometricProperty);
break;
}
}
}
bool existsProperty = false;
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
const AnimationPlayer* player = mPlayers[playerIdx];
if (!player->IsRunning() || !player->GetSource()) {
continue;
}
const Animation* anim = player->GetSource();
existsProperty = existsProperty || anim->Properties().Length() > 0;
for (size_t propIdx = 0, propEnd = anim->Properties().Length();
propIdx != propEnd; ++propIdx) {
const AnimationProperty& prop = anim->Properties()[propIdx];
if (!CanAnimatePropertyOnCompositor(mElement,
prop.mProperty,
aFlags) ||
IsCompositorAnimationDisabledForFrame(frame)) {
return false;
}
}
}
// No properties to animate
if (!existsProperty) {
return false;
}
return true;
}
bool
AnimationPlayerCollection::HasAnimationOfProperty(
nsCSSProperty aProperty) const
{
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
const Animation* anim = mPlayers[playerIdx]->GetSource();
if (anim && anim->HasAnimationOfProperty(aProperty) &&
!anim->IsFinishedTransition()) {
return true;
}
}
return false;
}
mozilla::dom::Element*
AnimationPlayerCollection::GetElementToRestyle() const
{
if (IsForElement()) {
return mElement;
}
nsIFrame* primaryFrame = mElement->GetPrimaryFrame();
if (!primaryFrame) {
return nullptr;
}
nsIFrame* pseudoFrame;
if (IsForBeforePseudo()) {
pseudoFrame = nsLayoutUtils::GetBeforeFrame(primaryFrame);
} else if (IsForAfterPseudo()) {
pseudoFrame = nsLayoutUtils::GetAfterFrame(primaryFrame);
} else {
MOZ_ASSERT(false, "unknown mElementProperty");
return nullptr;
}
if (!pseudoFrame) {
return nullptr;
}
return pseudoFrame->GetContent()->AsElement();
}
/* static */ void
AnimationPlayerCollection::LogAsyncAnimationFailure(nsCString& aMessage,
const nsIContent* aContent)
{
if (aContent) {
aMessage.AppendLiteral(" [");
aMessage.Append(nsAtomCString(aContent->Tag()));
nsIAtom* id = aContent->GetID();
if (id) {
aMessage.AppendLiteral(" with id '");
aMessage.Append(nsAtomCString(aContent->GetID()));
aMessage.Append('\'');
}
aMessage.Append(']');
}
aMessage.Append('\n');
printf_stderr("%s", aMessage.get());
}
/*static*/ void
AnimationPlayerCollection::PropertyDtor(void *aObject, nsIAtom *aPropertyName,
void *aPropertyValue, void *aData)
{
AnimationPlayerCollection* collection =
static_cast<AnimationPlayerCollection*>(aPropertyValue);
#ifdef DEBUG
NS_ABORT_IF_FALSE(!collection->mCalledPropertyDtor, "can't call dtor twice");
collection->mCalledPropertyDtor = true;
#endif
delete collection;
}
void
AnimationPlayerCollection::Tick()
{
for (size_t playerIdx = 0, playerEnd = mPlayers.Length();
playerIdx != playerEnd; playerIdx++) {
mPlayers[playerIdx]->Tick();
}
}
void
AnimationPlayerCollection::EnsureStyleRuleFor(TimeStamp aRefreshTime,
EnsureStyleRuleFlags aFlags)
{
if (!mNeedsRefreshes) {
mStyleRuleRefreshTime = aRefreshTime;
return;
}
// If we're performing animations on the compositor thread, then we can skip
// most of the work in this method. But even if we are throttled, then we
// have to do the work if an animation is ending in order to get correct end
// of animation behaviour (the styles of the animation disappear, or the fill
// mode behaviour). This loop checks for any finishing animations and forces
// the style recalculation if we find any.
if (aFlags == EnsureStyleRule_IsThrottled) {
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
AnimationPlayer* player = mPlayers[playerIdx];
// Skip player with no source content, finished transitions, or animations
// whose @keyframes rule is empty.
if (!player->GetSource() ||
player->GetSource()->IsFinishedTransition() ||
player->GetSource()->Properties().IsEmpty()) {
continue;
}
// The GetComputedTiming() call here handles pausing. But:
// FIXME: avoid recalculating every time when paused.
ComputedTiming computedTiming = player->GetSource()->GetComputedTiming();
// XXX We shouldn't really be using LastNotification() as a general
// indicator that the animation has finished, it should be reserved for
// events. If we use it differently in the future this use might need
// changing.
if (!player->mIsRunningOnCompositor ||
(computedTiming.mPhase == ComputedTiming::AnimationPhase_After &&
player->GetSource()->LastNotification()
!= Animation::LAST_NOTIFICATION_END))
{
aFlags = EnsureStyleRule_IsNotThrottled;
break;
}
}
}
if (aFlags == EnsureStyleRule_IsThrottled) {
return;
}
// mStyleRule may be null and valid, if we have no style to apply.
if (mStyleRuleRefreshTime.IsNull() ||
mStyleRuleRefreshTime != aRefreshTime) {
mStyleRuleRefreshTime = aRefreshTime;
mStyleRule = nullptr;
// We'll set mNeedsRefreshes to true below in all cases where we need them.
mNeedsRefreshes = false;
// FIXME(spec): assume that properties in higher animations override
// those in lower ones.
// Therefore, we iterate from last animation to first.
nsCSSPropertySet properties;
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
AnimationPlayer* player = mPlayers[playerIdx];
if (!player->GetSource() || player->GetSource()->IsFinishedTransition()) {
continue;
}
// The GetComputedTiming() call here handles pausing. But:
// FIXME: avoid recalculating every time when paused.
ComputedTiming computedTiming = player->GetSource()->GetComputedTiming();
if ((computedTiming.mPhase == ComputedTiming::AnimationPhase_Before ||
computedTiming.mPhase == ComputedTiming::AnimationPhase_Active) &&
!player->IsPaused()) {
mNeedsRefreshes = true;
}
// If the time fraction is null, we don't have fill data for the current
// time so we shouldn't animate.
// Likewise, if the player has no source content.
if (computedTiming.mTimeFraction == ComputedTiming::kNullTimeFraction) {
continue;
}
NS_ABORT_IF_FALSE(0.0 <= computedTiming.mTimeFraction &&
computedTiming.mTimeFraction <= 1.0,
"timing fraction should be in [0-1]");
const Animation* anim = player->GetSource();
for (size_t propIdx = 0, propEnd = anim->Properties().Length();
propIdx != propEnd; ++propIdx)
{
const AnimationProperty& prop = anim->Properties()[propIdx];
NS_ABORT_IF_FALSE(prop.mSegments[0].mFromKey == 0.0,
"incorrect first from key");
NS_ABORT_IF_FALSE(prop.mSegments[prop.mSegments.Length() - 1].mToKey
== 1.0,
"incorrect last to key");
if (properties.HasProperty(prop.mProperty)) {
// A later animation already set this property.
continue;
}
properties.AddProperty(prop.mProperty);
NS_ABORT_IF_FALSE(prop.mSegments.Length() > 0,
"property should not be in animations if it "
"has no segments");
// FIXME: Maybe cache the current segment?
const AnimationPropertySegment *segment = prop.mSegments.Elements(),
*segmentEnd = segment + prop.mSegments.Length();
while (segment->mToKey < computedTiming.mTimeFraction) {
NS_ABORT_IF_FALSE(segment->mFromKey < segment->mToKey,
"incorrect keys");
++segment;
if (segment == segmentEnd) {
NS_ABORT_IF_FALSE(false, "incorrect time fraction");
break; // in order to continue in outer loop (just below)
}
NS_ABORT_IF_FALSE(segment->mFromKey == (segment-1)->mToKey,
"incorrect keys");
}
if (segment == segmentEnd) {
continue;
}
NS_ABORT_IF_FALSE(segment->mFromKey < segment->mToKey,
"incorrect keys");
NS_ABORT_IF_FALSE(segment >= prop.mSegments.Elements() &&
size_t(segment - prop.mSegments.Elements()) <
prop.mSegments.Length(),
"out of array bounds");
if (!mStyleRule) {
// Allocate the style rule now that we know we have animation data.
mStyleRule = new css::AnimValuesStyleRule();
}
double positionInSegment =
(computedTiming.mTimeFraction - segment->mFromKey) /
(segment->mToKey - segment->mFromKey);
double valuePosition =
segment->mTimingFunction.GetValue(positionInSegment);
StyleAnimationValue *val =
mStyleRule->AddEmptyValue(prop.mProperty);
#ifdef DEBUG
bool result =
#endif
StyleAnimationValue::Interpolate(prop.mProperty,
segment->mFromValue,
segment->mToValue,
valuePosition, *val);
NS_ABORT_IF_FALSE(result, "interpolate must succeed now");
}
}
}
}
bool
AnimationPlayerCollection::CanThrottleTransformChanges(TimeStamp aTime)
{
if (!nsLayoutUtils::AreAsyncAnimationsEnabled()) {
return false;
}
// If we know that the animation cannot cause overflow,
// we can just disable flushes for this animation.
// If we don't show scrollbars, we don't care about overflow.
if (LookAndFeel::GetInt(LookAndFeel::eIntID_ShowHideScrollbars) == 0) {
return true;
}
// If this animation can cause overflow, we can throttle some of the ticks.
if ((aTime - mStyleRuleRefreshTime) < TimeDuration::FromMilliseconds(200)) {
return true;
}
// If the nearest scrollable ancestor has overflow:hidden,
// we don't care about overflow.
nsIScrollableFrame* scrollable = nsLayoutUtils::GetNearestScrollableFrame(
nsLayoutUtils::GetStyleFrame(mElement));
if (!scrollable) {
return true;
}
ScrollbarStyles ss = scrollable->GetScrollbarStyles();
if (ss.mVertical == NS_STYLE_OVERFLOW_HIDDEN &&
ss.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
scrollable->GetLogicalScrollPosition() == nsPoint(0, 0)) {
return true;
}
return false;
}
bool
AnimationPlayerCollection::CanThrottleAnimation(TimeStamp aTime)
{
nsIFrame* frame = nsLayoutUtils::GetStyleFrame(mElement);
if (!frame) {
return false;
}
bool hasTransform = HasAnimationOfProperty(eCSSProperty_transform);
bool hasOpacity = HasAnimationOfProperty(eCSSProperty_opacity);
if (hasOpacity) {
Layer* layer = FrameLayerBuilder::GetDedicatedLayer(
frame, nsDisplayItem::TYPE_OPACITY);
if (!layer || mAnimationGeneration > layer->GetAnimationGeneration()) {
return false;
}
}
if (!hasTransform) {
return true;
}
Layer* layer = FrameLayerBuilder::GetDedicatedLayer(
frame, nsDisplayItem::TYPE_TRANSFORM);
if (!layer || mAnimationGeneration > layer->GetAnimationGeneration()) {
return false;
}
return CanThrottleTransformChanges(aTime);
}
void
AnimationPlayerCollection::UpdateAnimationGeneration(
nsPresContext* aPresContext)
{
mAnimationGeneration =
aPresContext->RestyleManager()->GetAnimationGeneration();
}
bool
AnimationPlayerCollection::HasCurrentAnimations()
{
for (size_t playerIdx = mPlayers.Length(); playerIdx-- != 0; ) {
if (mPlayers[playerIdx]->IsCurrent()) {
return true;
}
}
return false;
}
}