mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
982 lines
34 KiB
C++
982 lines
34 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAnimationManager.h"
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#include "nsPresContext.h"
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#include "nsRuleProcessorData.h"
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#include "nsStyleSet.h"
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#include "nsCSSRules.h"
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#include "nsStyleAnimation.h"
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#include "nsSMILKeySpline.h"
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#include "nsEventDispatcher.h"
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#include "nsDisplayList.h"
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#include "nsCSSFrameConstructor.h"
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using namespace mozilla;
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using namespace mozilla::css;
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ElementAnimations::ElementAnimations(mozilla::dom::Element *aElement, nsIAtom *aElementProperty,
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nsAnimationManager *aAnimationManager)
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: CommonElementAnimationData(aElement, aElementProperty,
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aAnimationManager),
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mNeedsRefreshes(true)
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{
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}
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static void
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ElementAnimationsPropertyDtor(void *aObject,
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nsIAtom *aPropertyName,
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void *aPropertyValue,
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void *aData)
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{
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ElementAnimations *ea = static_cast<ElementAnimations*>(aPropertyValue);
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#ifdef DEBUG
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NS_ABORT_IF_FALSE(!ea->mCalledPropertyDtor, "can't call dtor twice");
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ea->mCalledPropertyDtor = true;
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#endif
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delete ea;
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}
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double
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ElementAnimations::GetPositionInIteration(TimeStamp aStartTime, TimeStamp aCurrentTime,
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TimeDuration aDuration, double aIterationCount,
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uint32_t aDirection, bool aIsForElement,
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ElementAnimation* aAnimation,
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ElementAnimations* aEa,
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EventArray* aEventsToDispatch)
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{
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// Set |currentIterationCount| to the (fractional) number of
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// iterations we've completed up to the current position.
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TimeDuration currentTimeDuration = aCurrentTime - aStartTime;
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double currentIterationCount =
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currentTimeDuration / aDuration;
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bool dispatchStartOrIteration = false;
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if (currentIterationCount >= aIterationCount) {
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if (aAnimation) {
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// Dispatch 'animationend' when needed.
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if (aIsForElement &&
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aAnimation->mLastNotification !=
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ElementAnimation::LAST_NOTIFICATION_END) {
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aAnimation->mLastNotification = ElementAnimation::LAST_NOTIFICATION_END;
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// XXXdz: if this animation was done on the compositor, we should
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// invalidate the frame and update style once we start throttling style
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// updates.
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AnimationEventInfo ei(aEa->mElement, aAnimation->mName, NS_ANIMATION_END,
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currentTimeDuration);
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aEventsToDispatch->AppendElement(ei);
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}
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if (!aAnimation->FillsForwards()) {
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// No animation data.
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return -1;
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}
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} else {
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// If aAnimation is null, that means we're on the compositor
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// thread. We want to just keep filling forwards until the main
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// thread gets around to updating the compositor thread (which
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// might take a little while). So just assume we fill fowards and
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// move on.
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}
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currentIterationCount = aIterationCount;
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} else {
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if (aAnimation && !aAnimation->IsPaused()) {
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aEa->mNeedsRefreshes = true;
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}
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if (currentIterationCount < 0.0) {
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NS_ASSERTION(aAnimation, "Should not run animation that hasn't started yet on the compositor");
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if (!aAnimation->FillsBackwards()) {
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// No animation data.
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return -1;
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}
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currentIterationCount = 0.0;
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} else {
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dispatchStartOrIteration = aAnimation && !aAnimation->IsPaused();
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}
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}
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// Set |positionInIteration| to the position from 0% to 100% along
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// the keyframes.
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NS_ABORT_IF_FALSE(currentIterationCount >= 0.0, "must be positive");
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uint32_t whichIteration = int(currentIterationCount);
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if (whichIteration == aIterationCount && whichIteration != 0) {
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// When the animation's iteration count is an integer (as it
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// normally is), we need to end at 100% of its last iteration
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// rather than 0% of the next one (unless it's zero).
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--whichIteration;
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}
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double positionInIteration =
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currentIterationCount - double(whichIteration);
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bool thisIterationReverse = false;
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switch (aDirection) {
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case NS_STYLE_ANIMATION_DIRECTION_NORMAL:
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thisIterationReverse = false;
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break;
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case NS_STYLE_ANIMATION_DIRECTION_REVERSE:
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thisIterationReverse = true;
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break;
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case NS_STYLE_ANIMATION_DIRECTION_ALTERNATE:
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thisIterationReverse = (whichIteration & 1) == 1;
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break;
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case NS_STYLE_ANIMATION_DIRECTION_ALTERNATE_REVERSE:
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thisIterationReverse = (whichIteration & 1) == 0;
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break;
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}
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if (thisIterationReverse) {
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positionInIteration = 1.0 - positionInIteration;
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}
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// Dispatch 'animationstart' or 'animationiteration' when needed.
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if (aAnimation && aIsForElement && dispatchStartOrIteration &&
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whichIteration != aAnimation->mLastNotification) {
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// Notify 'animationstart' even if a negative delay puts us
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// past the first iteration.
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// Note that when somebody changes the animation-duration
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// dynamically, this will fire an extra iteration event
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// immediately in many cases. It's not clear to me if that's the
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// right thing to do.
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uint32_t message =
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aAnimation->mLastNotification == ElementAnimation::LAST_NOTIFICATION_NONE
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? NS_ANIMATION_START : NS_ANIMATION_ITERATION;
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// XXXdz: If this is a start, invalidate the frame here once we throttle animations.
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aAnimation->mLastNotification = whichIteration;
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AnimationEventInfo ei(aEa->mElement, aAnimation->mName, message,
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currentTimeDuration);
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aEventsToDispatch->AppendElement(ei);
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}
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return positionInIteration;
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}
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void
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ElementAnimations::EnsureStyleRuleFor(TimeStamp aRefreshTime,
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EventArray& aEventsToDispatch)
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{
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if (!mNeedsRefreshes) {
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// All of our animations are paused or completed.
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mStyleRuleRefreshTime = aRefreshTime;
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return;
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}
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// mStyleRule may be null and valid, if we have no style to apply.
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if (mStyleRuleRefreshTime.IsNull() ||
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mStyleRuleRefreshTime != aRefreshTime) {
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mStyleRuleRefreshTime = aRefreshTime;
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mStyleRule = nullptr;
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// We'll set mNeedsRefreshes to true below in all cases where we need them.
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mNeedsRefreshes = false;
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// FIXME(spec): assume that properties in higher animations override
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// those in lower ones.
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// Therefore, we iterate from last animation to first.
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nsCSSPropertySet properties;
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for (uint32_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
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ElementAnimation &anim = mAnimations[animIdx];
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if (anim.mProperties.Length() == 0 ||
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anim.mIterationDuration.ToMilliseconds() <= 0.0) {
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// No animation data.
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continue;
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}
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TimeStamp currentTime;
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if (anim.IsPaused()) {
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// FIXME: avoid recalculating every time
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currentTime = anim.mPauseStart;
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} else {
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currentTime = aRefreshTime;
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}
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double positionInIteration =
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GetPositionInIteration(anim.mStartTime, currentTime,
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anim.mIterationDuration, anim.mIterationCount,
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anim.mDirection, IsForElement(),
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&anim, this, &aEventsToDispatch);
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// The position is -1 when we don't have fill data for the current time,
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// so we shouldn't animate.
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if (positionInIteration == -1)
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continue;
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NS_ABORT_IF_FALSE(0.0 <= positionInIteration &&
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positionInIteration <= 1.0,
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"position should be in [0-1]");
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for (uint32_t propIdx = 0, propEnd = anim.mProperties.Length();
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propIdx != propEnd; ++propIdx)
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{
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const AnimationProperty &prop = anim.mProperties[propIdx];
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NS_ABORT_IF_FALSE(prop.mSegments[0].mFromKey == 0.0,
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"incorrect first from key");
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NS_ABORT_IF_FALSE(prop.mSegments[prop.mSegments.Length() - 1].mToKey
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== 1.0,
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"incorrect last to key");
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if (properties.HasProperty(prop.mProperty)) {
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// A later animation already set this property.
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continue;
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}
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properties.AddProperty(prop.mProperty);
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NS_ABORT_IF_FALSE(prop.mSegments.Length() > 0,
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"property should not be in animations if it "
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"has no segments");
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// FIXME: Maybe cache the current segment?
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const AnimationPropertySegment *segment = prop.mSegments.Elements();
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while (segment->mToKey < positionInIteration) {
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NS_ABORT_IF_FALSE(segment->mFromKey < segment->mToKey,
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"incorrect keys");
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++segment;
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NS_ABORT_IF_FALSE(segment->mFromKey == (segment-1)->mToKey,
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"incorrect keys");
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}
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NS_ABORT_IF_FALSE(segment->mFromKey < segment->mToKey,
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"incorrect keys");
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NS_ABORT_IF_FALSE(segment - prop.mSegments.Elements() <
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prop.mSegments.Length(),
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"ran off end");
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if (!mStyleRule) {
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// Allocate the style rule now that we know we have animation data.
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mStyleRule = new css::AnimValuesStyleRule();
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}
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double positionInSegment = (positionInIteration - segment->mFromKey) /
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(segment->mToKey - segment->mFromKey);
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double valuePosition =
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segment->mTimingFunction.GetValue(positionInSegment);
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nsStyleAnimation::Value *val =
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mStyleRule->AddEmptyValue(prop.mProperty);
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#ifdef DEBUG
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bool result =
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#endif
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nsStyleAnimation::Interpolate(prop.mProperty,
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segment->mFromValue, segment->mToValue,
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valuePosition, *val);
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NS_ABORT_IF_FALSE(result, "interpolate must succeed now");
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}
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}
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}
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}
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bool
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ElementAnimation::IsRunningAt(TimeStamp aTime) const
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{
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return !IsPaused() && aTime > mStartTime &&
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(aTime - mStartTime) / mIterationDuration < mIterationCount;
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}
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bool
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ElementAnimation::HasAnimationOfProperty(nsCSSProperty aProperty) const
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{
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for (uint32_t propIdx = 0, propEnd = mProperties.Length();
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propIdx != propEnd; ++propIdx) {
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if (aProperty == mProperties[propIdx].mProperty) {
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return true;
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}
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}
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return false;
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}
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bool
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ElementAnimations::HasAnimationOfProperty(nsCSSProperty aProperty) const
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{
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for (uint32_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
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const ElementAnimation &anim = mAnimations[animIdx];
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if (anim.HasAnimationOfProperty(aProperty)) {
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return true;
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}
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}
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return false;
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}
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bool
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ElementAnimations::CanPerformOnCompositorThread() const
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{
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nsIFrame* frame = mElement->GetPrimaryFrame();
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if (!frame) {
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return false;
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}
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if (mElementProperty != nsGkAtoms::animationsProperty) {
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if (nsLayoutUtils::IsAnimationLoggingEnabled()) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async animation of pseudoelements not supported. See bug 771367");
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LogAsyncAnimationFailure(message, mElement);
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}
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return false;
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}
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TimeStamp now = frame->PresContext()->RefreshDriver()->MostRecentRefresh();
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bool hasGeometricProperty = false;
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for (uint32_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
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const ElementAnimation& anim = mAnimations[animIdx];
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for (uint32_t propIdx = 0, propEnd = anim.mProperties.Length();
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propIdx != propEnd; ++propIdx) {
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if (IsGeometricProperty(anim.mProperties[propIdx].mProperty) &&
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anim.IsRunningAt(now)) {
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hasGeometricProperty = true;
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break;
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}
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}
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}
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bool hasOpacity = false;
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bool hasTransform = false;
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for (uint32_t animIdx = mAnimations.Length(); animIdx-- != 0; ) {
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const ElementAnimation& anim = mAnimations[animIdx];
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if (anim.mIterationDuration.ToMilliseconds() <= 0.0) {
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// No animation data
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continue;
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}
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for (uint32_t propIdx = 0, propEnd = anim.mProperties.Length();
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propIdx != propEnd; ++propIdx) {
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const AnimationProperty& prop = anim.mProperties[propIdx];
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if (!CanAnimatePropertyOnCompositor(mElement,
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prop.mProperty,
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hasGeometricProperty)) {
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return false;
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}
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if (prop.mProperty == eCSSProperty_opacity) {
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hasOpacity = true;
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} else if (prop.mProperty == eCSSProperty_transform) {
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hasTransform = true;
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}
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}
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}
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// This animation can be done on the compositor. Mark the frame as active, in
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// case we are able to throttle this animation.
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if (hasOpacity) {
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frame->MarkLayersActive(nsChangeHint_UpdateOpacityLayer);
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}
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if (hasTransform) {
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frame->MarkLayersActive(nsChangeHint_UpdateTransformLayer);
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}
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return true;
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}
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ElementAnimations*
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nsAnimationManager::GetElementAnimations(dom::Element *aElement,
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nsCSSPseudoElements::Type aPseudoType,
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bool aCreateIfNeeded)
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{
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if (!aCreateIfNeeded && PR_CLIST_IS_EMPTY(&mElementData)) {
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// Early return for the most common case.
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return nullptr;
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}
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nsIAtom *propName;
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if (aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement) {
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propName = nsGkAtoms::animationsProperty;
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_before) {
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propName = nsGkAtoms::animationsOfBeforeProperty;
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_after) {
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propName = nsGkAtoms::animationsOfAfterProperty;
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} else {
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NS_ASSERTION(!aCreateIfNeeded,
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"should never try to create transitions for pseudo "
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"other than :before or :after");
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return nullptr;
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}
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ElementAnimations *ea = static_cast<ElementAnimations*>(
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aElement->GetProperty(propName));
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if (!ea && aCreateIfNeeded) {
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// FIXME: Consider arena-allocating?
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ea = new ElementAnimations(aElement, propName, this);
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nsresult rv = aElement->SetProperty(propName, ea,
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ElementAnimationsPropertyDtor, false);
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if (NS_FAILED(rv)) {
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NS_WARNING("SetProperty failed");
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delete ea;
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return nullptr;
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}
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if (propName == nsGkAtoms::animationsProperty) {
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aElement->SetMayHaveAnimations();
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}
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AddElementData(ea);
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}
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return ea;
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(ElementRuleProcessorData* aData)
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{
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NS_ABORT_IF_FALSE(aData->mPresContext == mPresContext,
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"pres context mismatch");
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nsIStyleRule *rule =
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GetAnimationRule(aData->mElement,
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nsCSSPseudoElements::ePseudo_NotPseudoElement);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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}
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(PseudoElementRuleProcessorData* aData)
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{
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NS_ABORT_IF_FALSE(aData->mPresContext == mPresContext,
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"pres context mismatch");
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if (aData->mPseudoType != nsCSSPseudoElements::ePseudo_before &&
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aData->mPseudoType != nsCSSPseudoElements::ePseudo_after) {
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return;
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}
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// FIXME: Do we really want to be the only thing keeping a
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// pseudo-element alive? I *think* the non-animation restyle should
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// handle that, but should add a test.
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nsIStyleRule *rule = GetAnimationRule(aData->mElement, aData->mPseudoType);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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}
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(AnonBoxRuleProcessorData* aData)
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{
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}
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#ifdef MOZ_XUL
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/* virtual */ void
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nsAnimationManager::RulesMatching(XULTreeRuleProcessorData* aData)
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{
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}
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#endif
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/* virtual */ size_t
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nsAnimationManager::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
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{
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return CommonAnimationManager::SizeOfExcludingThis(aMallocSizeOf);
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mKeyframesRules
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// - mPendingEvents
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}
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/* virtual */ size_t
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nsAnimationManager::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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nsIStyleRule*
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nsAnimationManager::CheckAnimationRule(nsStyleContext* aStyleContext,
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mozilla::dom::Element* aElement)
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{
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if (!mPresContext->IsProcessingAnimationStyleChange()) {
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// Everything that causes our animation data to change triggers a
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// style change, which in turn triggers a non-animation restyle.
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// Likewise, when we initially construct frames, we're not in a
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// style change, but also not in an animation restyle.
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const nsStyleDisplay *disp = aStyleContext->GetStyleDisplay();
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ElementAnimations *ea =
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GetElementAnimations(aElement, aStyleContext->GetPseudoType(), false);
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if (!ea &&
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disp->mAnimations.Length() == 1 &&
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disp->mAnimations[0].GetName().IsEmpty()) {
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return nullptr;
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}
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|
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// build the animations list
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InfallibleTArray<ElementAnimation> newAnimations;
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BuildAnimations(aStyleContext, newAnimations);
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if (newAnimations.IsEmpty()) {
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if (ea) {
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ea->Destroy();
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}
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return nullptr;
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}
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TimeStamp refreshTime = mPresContext->RefreshDriver()->MostRecentRefresh();
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|
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if (ea) {
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// XXXdz: Invalidate the frame since the animation changed.
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// The cached style rule is invalid.
|
|
ea->mStyleRule = nullptr;
|
|
ea->mStyleRuleRefreshTime = TimeStamp();
|
|
|
|
// Copy over the start times and (if still paused) pause starts
|
|
// for each animation (matching on name only) that was also in the
|
|
// old list of animations.
|
|
// This means that we honor dynamic changes, which isn't what the
|
|
// spec says to do, but WebKit seems to honor at least some of
|
|
// them. See
|
|
// http://lists.w3.org/Archives/Public/www-style/2011Apr/0079.html
|
|
// In order to honor what the spec said, we'd copy more data over
|
|
// (or potentially optimize BuildAnimations to avoid rebuilding it
|
|
// in the first place).
|
|
if (!ea->mAnimations.IsEmpty()) {
|
|
for (uint32_t newIdx = 0, newEnd = newAnimations.Length();
|
|
newIdx != newEnd; ++newIdx) {
|
|
ElementAnimation *newAnim = &newAnimations[newIdx];
|
|
|
|
// Find the matching animation with this name in the old list
|
|
// of animations. Because of this code, they must all have
|
|
// the same start time, though they might differ in pause
|
|
// state. So if a page uses multiple copies of the same
|
|
// animation in one element's animation list, and gives them
|
|
// different pause states, they, well, get what they deserve.
|
|
// We'll use the last one since it's more likely to be the one
|
|
// doing something.
|
|
const ElementAnimation *oldAnim = nullptr;
|
|
for (uint32_t oldIdx = ea->mAnimations.Length(); oldIdx-- != 0; ) {
|
|
const ElementAnimation *a = &ea->mAnimations[oldIdx];
|
|
if (a->mName == newAnim->mName) {
|
|
oldAnim = a;
|
|
break;
|
|
}
|
|
}
|
|
if (!oldAnim) {
|
|
continue;
|
|
}
|
|
|
|
newAnim->mStartTime = oldAnim->mStartTime;
|
|
newAnim->mLastNotification = oldAnim->mLastNotification;
|
|
|
|
if (oldAnim->IsPaused()) {
|
|
if (newAnim->IsPaused()) {
|
|
// Copy pause start just like start time.
|
|
newAnim->mPauseStart = oldAnim->mPauseStart;
|
|
} else {
|
|
// Handle change in pause state by adjusting start
|
|
// time to unpause.
|
|
newAnim->mStartTime += refreshTime - oldAnim->mPauseStart;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
ea = GetElementAnimations(aElement, aStyleContext->GetPseudoType(),
|
|
true);
|
|
}
|
|
ea->mAnimations.SwapElements(newAnimations);
|
|
ea->mNeedsRefreshes = true;
|
|
|
|
ea->EnsureStyleRuleFor(refreshTime, mPendingEvents);
|
|
// We don't actually dispatch the mPendingEvents now. We'll either
|
|
// dispatch them the next time we get a refresh driver notification
|
|
// or the next time somebody calls
|
|
// nsPresShell::FlushPendingNotifications.
|
|
if (!mPendingEvents.IsEmpty()) {
|
|
mPresContext->Document()->SetNeedStyleFlush();
|
|
}
|
|
}
|
|
|
|
return GetAnimationRule(aElement, aStyleContext->GetPseudoType());
|
|
}
|
|
|
|
class PercentageHashKey : public PLDHashEntryHdr
|
|
{
|
|
public:
|
|
typedef const float& KeyType;
|
|
typedef const float* KeyTypePointer;
|
|
|
|
PercentageHashKey(KeyTypePointer aKey) : mValue(*aKey) { }
|
|
PercentageHashKey(const PercentageHashKey& toCopy) : mValue(toCopy.mValue) { }
|
|
~PercentageHashKey() { }
|
|
|
|
KeyType GetKey() const { return mValue; }
|
|
bool KeyEquals(KeyTypePointer aKey) const { return *aKey == mValue; }
|
|
|
|
static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
|
|
static PLDHashNumber HashKey(KeyTypePointer aKey) {
|
|
MOZ_STATIC_ASSERT(sizeof(PLDHashNumber) == sizeof(uint32_t),
|
|
"this hash function assumes PLDHashNumber is uint32_t");
|
|
MOZ_STATIC_ASSERT(PLDHashNumber(-1) > PLDHashNumber(0),
|
|
"this hash function assumes PLDHashNumber is uint32_t");
|
|
float key = *aKey;
|
|
NS_ABORT_IF_FALSE(0.0f <= key && key <= 1.0f, "out of range");
|
|
return PLDHashNumber(key * UINT32_MAX);
|
|
}
|
|
enum { ALLOW_MEMMOVE = true };
|
|
|
|
private:
|
|
const float mValue;
|
|
};
|
|
|
|
struct KeyframeData {
|
|
float mKey;
|
|
uint32_t mIndex; // store original order since sort algorithm is not stable
|
|
nsCSSKeyframeRule *mRule;
|
|
};
|
|
|
|
struct KeyframeDataComparator {
|
|
bool Equals(const KeyframeData& A, const KeyframeData& B) const {
|
|
return A.mKey == B.mKey && A.mIndex == B.mIndex;
|
|
}
|
|
bool LessThan(const KeyframeData& A, const KeyframeData& B) const {
|
|
return A.mKey < B.mKey || (A.mKey == B.mKey && A.mIndex < B.mIndex);
|
|
}
|
|
};
|
|
|
|
class ResolvedStyleCache {
|
|
public:
|
|
ResolvedStyleCache() {
|
|
mCache.Init(16); // FIXME: make infallible!
|
|
}
|
|
nsStyleContext* Get(nsPresContext *aPresContext,
|
|
nsStyleContext *aParentStyleContext,
|
|
nsCSSKeyframeRule *aKeyframe);
|
|
|
|
private:
|
|
nsRefPtrHashtable<nsPtrHashKey<nsCSSKeyframeRule>, nsStyleContext> mCache;
|
|
};
|
|
|
|
nsStyleContext*
|
|
ResolvedStyleCache::Get(nsPresContext *aPresContext,
|
|
nsStyleContext *aParentStyleContext,
|
|
nsCSSKeyframeRule *aKeyframe)
|
|
{
|
|
// FIXME (spec): The css3-animations spec isn't very clear about how
|
|
// properties are resolved when they have values that depend on other
|
|
// properties (e.g., values in 'em'). I presume that they're resolved
|
|
// relative to the other styles of the element. The question is
|
|
// whether they are resolved relative to other animations: I assume
|
|
// that they're not, since that would prevent us from caching a lot of
|
|
// data that we'd really like to cache (in particular, the
|
|
// nsStyleAnimation::Value values in AnimationPropertySegment).
|
|
nsStyleContext *result = mCache.GetWeak(aKeyframe);
|
|
if (!result) {
|
|
nsCOMArray<nsIStyleRule> rules;
|
|
rules.AppendObject(aKeyframe);
|
|
nsRefPtr<nsStyleContext> resultStrong = aPresContext->StyleSet()->
|
|
ResolveStyleByAddingRules(aParentStyleContext, rules);
|
|
mCache.Put(aKeyframe, resultStrong);
|
|
result = resultStrong;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::BuildAnimations(nsStyleContext* aStyleContext,
|
|
InfallibleTArray<ElementAnimation>& aAnimations)
|
|
{
|
|
NS_ABORT_IF_FALSE(aAnimations.IsEmpty(), "expect empty array");
|
|
|
|
ResolvedStyleCache resolvedStyles;
|
|
|
|
const nsStyleDisplay *disp = aStyleContext->GetStyleDisplay();
|
|
TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
|
|
for (uint32_t animIdx = 0, animEnd = disp->mAnimations.Length();
|
|
animIdx != animEnd; ++animIdx) {
|
|
const nsAnimation& aSrc = disp->mAnimations[animIdx];
|
|
ElementAnimation& aDest = *aAnimations.AppendElement();
|
|
|
|
aDest.mName = aSrc.GetName();
|
|
aDest.mIterationCount = aSrc.GetIterationCount();
|
|
aDest.mDirection = aSrc.GetDirection();
|
|
aDest.mFillMode = aSrc.GetFillMode();
|
|
aDest.mPlayState = aSrc.GetPlayState();
|
|
|
|
aDest.mStartTime = now + TimeDuration::FromMilliseconds(aSrc.GetDelay());
|
|
if (aDest.IsPaused()) {
|
|
aDest.mPauseStart = now;
|
|
} else {
|
|
aDest.mPauseStart = TimeStamp();
|
|
}
|
|
|
|
aDest.mIterationDuration = TimeDuration::FromMilliseconds(aSrc.GetDuration());
|
|
|
|
nsCSSKeyframesRule *rule = KeyframesRuleFor(aDest.mName);
|
|
if (!rule) {
|
|
// no segments
|
|
continue;
|
|
}
|
|
|
|
// While current drafts of css3-animations say that later keyframes
|
|
// with the same key entirely replace earlier ones (no cascading),
|
|
// this is a bad idea and contradictory to the rest of CSS. So
|
|
// we're going to keep all the keyframes for each key and then do
|
|
// the replacement on a per-property basis rather than a per-rule
|
|
// basis, just like everything else in CSS.
|
|
|
|
AutoInfallibleTArray<KeyframeData, 16> sortedKeyframes;
|
|
|
|
for (uint32_t ruleIdx = 0, ruleEnd = rule->StyleRuleCount();
|
|
ruleIdx != ruleEnd; ++ruleIdx) {
|
|
css::Rule* cssRule = rule->GetStyleRuleAt(ruleIdx);
|
|
NS_ABORT_IF_FALSE(cssRule, "must have rule");
|
|
NS_ABORT_IF_FALSE(cssRule->GetType() == css::Rule::KEYFRAME_RULE,
|
|
"must be keyframe rule");
|
|
nsCSSKeyframeRule *kfRule = static_cast<nsCSSKeyframeRule*>(cssRule);
|
|
|
|
const nsTArray<float> &keys = kfRule->GetKeys();
|
|
for (uint32_t keyIdx = 0, keyEnd = keys.Length();
|
|
keyIdx != keyEnd; ++keyIdx) {
|
|
float key = keys[keyIdx];
|
|
// FIXME (spec): The spec doesn't say what to do with
|
|
// out-of-range keyframes. We'll ignore them.
|
|
// (And PercentageHashKey currently assumes we either ignore or
|
|
// clamp them.)
|
|
if (0.0f <= key && key <= 1.0f) {
|
|
KeyframeData *data = sortedKeyframes.AppendElement();
|
|
data->mKey = key;
|
|
data->mIndex = ruleIdx;
|
|
data->mRule = kfRule;
|
|
}
|
|
}
|
|
}
|
|
|
|
sortedKeyframes.Sort(KeyframeDataComparator());
|
|
|
|
if (sortedKeyframes.Length() == 0) {
|
|
// no segments
|
|
continue;
|
|
}
|
|
|
|
// Record the properties that are present in any keyframe rules we
|
|
// are using.
|
|
nsCSSPropertySet properties;
|
|
|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
css::Declaration *decl = sortedKeyframes[kfIdx].mRule->Declaration();
|
|
for (uint32_t propIdx = 0, propEnd = decl->Count();
|
|
propIdx != propEnd; ++propIdx) {
|
|
properties.AddProperty(decl->OrderValueAt(propIdx));
|
|
}
|
|
}
|
|
|
|
for (nsCSSProperty prop = nsCSSProperty(0);
|
|
prop < eCSSProperty_COUNT_no_shorthands;
|
|
prop = nsCSSProperty(prop + 1)) {
|
|
if (!properties.HasProperty(prop) ||
|
|
nsCSSProps::kAnimTypeTable[prop] == eStyleAnimType_None) {
|
|
continue;
|
|
}
|
|
|
|
// Build a list of the keyframes to use for this property. This
|
|
// means we need every keyframe with the property in it, except
|
|
// for those keyframes where a later keyframe with the *same key*
|
|
// also has the property.
|
|
AutoInfallibleTArray<uint32_t, 16> keyframesWithProperty;
|
|
float lastKey = 100.0f; // an invalid key
|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
KeyframeData &kf = sortedKeyframes[kfIdx];
|
|
if (!kf.mRule->Declaration()->HasProperty(prop)) {
|
|
continue;
|
|
}
|
|
if (kf.mKey == lastKey) {
|
|
// Replace previous occurrence of same key.
|
|
keyframesWithProperty[keyframesWithProperty.Length() - 1] = kfIdx;
|
|
} else {
|
|
keyframesWithProperty.AppendElement(kfIdx);
|
|
}
|
|
lastKey = kf.mKey;
|
|
}
|
|
|
|
AnimationProperty &propData = *aDest.mProperties.AppendElement();
|
|
propData.mProperty = prop;
|
|
|
|
KeyframeData *fromKeyframe = nullptr;
|
|
nsRefPtr<nsStyleContext> fromContext;
|
|
bool interpolated = true;
|
|
for (uint32_t wpIdx = 0, wpEnd = keyframesWithProperty.Length();
|
|
wpIdx != wpEnd; ++wpIdx) {
|
|
uint32_t kfIdx = keyframesWithProperty[wpIdx];
|
|
KeyframeData &toKeyframe = sortedKeyframes[kfIdx];
|
|
|
|
nsRefPtr<nsStyleContext> toContext =
|
|
resolvedStyles.Get(mPresContext, aStyleContext, toKeyframe.mRule);
|
|
|
|
if (fromKeyframe) {
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, aSrc,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
toKeyframe.mKey, toContext);
|
|
} else {
|
|
if (toKeyframe.mKey != 0.0f) {
|
|
// There's no data for this property at 0%, so use the
|
|
// cascaded value above us.
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, aSrc,
|
|
0.0f, aStyleContext, nullptr,
|
|
toKeyframe.mKey, toContext);
|
|
}
|
|
}
|
|
|
|
fromContext = toContext;
|
|
fromKeyframe = &toKeyframe;
|
|
}
|
|
|
|
if (fromKeyframe->mKey != 1.0f) {
|
|
// There's no data for this property at 100%, so use the
|
|
// cascaded value above us.
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, aSrc,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
1.0f, aStyleContext);
|
|
}
|
|
|
|
// If we failed to build any segments due to inability to
|
|
// interpolate, remove the property from the animation. (It's not
|
|
// clear if this is the right thing to do -- we could run some of
|
|
// the segments, but it's really not clear whether we should skip
|
|
// values (which?) or skip segments, so best to skip the whole
|
|
// thing for now.)
|
|
if (!interpolated) {
|
|
aDest.mProperties.RemoveElementAt(aDest.mProperties.Length() - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsAnimationManager::BuildSegment(InfallibleTArray<AnimationPropertySegment>&
|
|
aSegments,
|
|
nsCSSProperty aProperty,
|
|
const nsAnimation& aAnimation,
|
|
float aFromKey, nsStyleContext* aFromContext,
|
|
mozilla::css::Declaration* aFromDeclaration,
|
|
float aToKey, nsStyleContext* aToContext)
|
|
{
|
|
nsStyleAnimation::Value fromValue, toValue, dummyValue;
|
|
if (!ExtractComputedValueForTransition(aProperty, aFromContext, fromValue) ||
|
|
!ExtractComputedValueForTransition(aProperty, aToContext, toValue) ||
|
|
// Check that we can interpolate between these values
|
|
// (If this is ever a performance problem, we could add a
|
|
// CanInterpolate method, but it seems fine for now.)
|
|
!nsStyleAnimation::Interpolate(aProperty, fromValue, toValue,
|
|
0.5, dummyValue)) {
|
|
return false;
|
|
}
|
|
|
|
AnimationPropertySegment &segment = *aSegments.AppendElement();
|
|
|
|
segment.mFromValue = fromValue;
|
|
segment.mToValue = toValue;
|
|
segment.mFromKey = aFromKey;
|
|
segment.mToKey = aToKey;
|
|
const nsTimingFunction *tf;
|
|
if (aFromDeclaration &&
|
|
aFromDeclaration->HasProperty(eCSSProperty_animation_timing_function)) {
|
|
tf = &aFromContext->GetStyleDisplay()->mAnimations[0].GetTimingFunction();
|
|
} else {
|
|
tf = &aAnimation.GetTimingFunction();
|
|
}
|
|
segment.mTimingFunction.Init(*tf);
|
|
|
|
return true;
|
|
}
|
|
|
|
nsIStyleRule*
|
|
nsAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
|
|
nsCSSPseudoElements::Type aPseudoType)
|
|
{
|
|
NS_ABORT_IF_FALSE(
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement ||
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_before ||
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_after,
|
|
"forbidden pseudo type");
|
|
|
|
ElementAnimations *ea =
|
|
GetElementAnimations(aElement, aPseudoType, false);
|
|
if (!ea) {
|
|
return nullptr;
|
|
}
|
|
|
|
NS_WARN_IF_FALSE(ea->mStyleRuleRefreshTime ==
|
|
mPresContext->RefreshDriver()->MostRecentRefresh(),
|
|
"should already have refreshed style rule");
|
|
|
|
if (mPresContext->IsProcessingRestyles() &&
|
|
!mPresContext->IsProcessingAnimationStyleChange()) {
|
|
// During the non-animation part of processing restyles, we don't
|
|
// add the animation rule.
|
|
|
|
if (ea->mStyleRule) {
|
|
ea->PostRestyleForAnimation(mPresContext);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
return ea->mStyleRule;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsAnimationManager::WillRefresh(mozilla::TimeStamp aTime)
|
|
{
|
|
NS_ABORT_IF_FALSE(mPresContext,
|
|
"refresh driver should not notify additional observers "
|
|
"after pres context has been destroyed");
|
|
if (!mPresContext->GetPresShell()) {
|
|
// Someone might be keeping mPresContext alive past the point
|
|
// where it has been torn down; don't bother doing anything in
|
|
// this case. But do get rid of all our transitions so we stop
|
|
// triggering refreshes.
|
|
RemoveAllElementData();
|
|
return;
|
|
}
|
|
|
|
// FIXME: check that there's at least one style rule that's not
|
|
// in its "done" state, and if there isn't, remove ourselves from
|
|
// the refresh driver (but leave the animations!).
|
|
for (PRCList *l = PR_LIST_HEAD(&mElementData); l != &mElementData;
|
|
l = PR_NEXT_LINK(l)) {
|
|
ElementAnimations *ea = static_cast<ElementAnimations*>(l);
|
|
nsRefPtr<css::AnimValuesStyleRule> oldStyleRule = ea->mStyleRule;
|
|
ea->EnsureStyleRuleFor(mPresContext->RefreshDriver()->MostRecentRefresh(),
|
|
mPendingEvents);
|
|
if (oldStyleRule != ea->mStyleRule) {
|
|
ea->PostRestyleForAnimation(mPresContext);
|
|
}
|
|
}
|
|
|
|
DispatchEvents(); // may destroy us
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::DoDispatchEvents()
|
|
{
|
|
EventArray events;
|
|
mPendingEvents.SwapElements(events);
|
|
for (uint32_t i = 0, i_end = events.Length(); i < i_end; ++i) {
|
|
AnimationEventInfo &info = events[i];
|
|
nsEventDispatcher::Dispatch(info.mElement, mPresContext, &info.mEvent);
|
|
|
|
if (!mPresContext) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCSSKeyframesRule*
|
|
nsAnimationManager::KeyframesRuleFor(const nsSubstring& aName)
|
|
{
|
|
if (mKeyframesListIsDirty) {
|
|
mKeyframesListIsDirty = false;
|
|
|
|
nsTArray<nsCSSKeyframesRule*> rules;
|
|
mPresContext->StyleSet()->AppendKeyframesRules(mPresContext, rules);
|
|
|
|
// Per css3-animations, the last @keyframes rule specified wins.
|
|
mKeyframesRules.Clear();
|
|
for (uint32_t i = 0, i_end = rules.Length(); i != i_end; ++i) {
|
|
nsCSSKeyframesRule *rule = rules[i];
|
|
mKeyframesRules.Put(rule->GetName(), rule);
|
|
}
|
|
}
|
|
|
|
return mKeyframesRules.Get(aName);
|
|
}
|
|
|