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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/animation/element_animations.h"
#include "third_party/blink/renderer/core/css/css_property_equality.h"
#include "third_party/blink/renderer/core/css/properties/css_property.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
namespace blink {
namespace {
void UpdateAnimationFlagsForEffect(const KeyframeEffect& effect,
ComputedStyle& style) {
if (effect.Affects(PropertyHandle(GetCSSPropertyOpacity())))
style.SetHasCurrentOpacityAnimation(true);
if (effect.Affects(PropertyHandle(GetCSSPropertyTransform())) ||
effect.Affects(PropertyHandle(GetCSSPropertyRotate())) ||
effect.Affects(PropertyHandle(GetCSSPropertyScale())) ||
effect.Affects(PropertyHandle(GetCSSPropertyTranslate())))
style.SetHasCurrentTransformAnimation(true);
if (effect.Affects(PropertyHandle(GetCSSPropertyFilter())))
style.SetHasCurrentFilterAnimation(true);
if (effect.Affects(PropertyHandle(GetCSSPropertyBackdropFilter())))
style.SetHasCurrentBackdropFilterAnimation(true);
}
#if DCHECK_IS_ON()
// Under certain conditions ComputedStyle::operator==() may return false for
// differences that are permitted during an animation.
bool ShouldCheckComputedStyles(const ComputedStyle& base_computed_style,
const ComputedStyle& computed_style) {
// The FontFaceCache version number may be increased without forcing a style
// recalc (see crbug.com/471079).
if (!base_computed_style.GetFont().IsFallbackValid())
return false;
// Images use instance equality rather than value equality (see
// crbug.com/781461).
for (CSSPropertyID id :
{CSSPropertyBackgroundImage, CSSPropertyWebkitMaskImage}) {
if (!CSSPropertyEquality::PropertiesEqual(
PropertyHandle(CSSProperty::Get(id)), base_computed_style,
computed_style)) {
return false;
}
}
return true;
}
#endif // DCHECK_IS_ON()
} // namespace
ElementAnimations::ElementAnimations() : animation_style_change_(false) {}
ElementAnimations::~ElementAnimations() = default;
void ElementAnimations::UpdateAnimationFlags(ComputedStyle& style) {
for (const auto& entry : animations_) {
const Animation& animation = *entry.key;
DCHECK(animation.effect());
// FIXME: Needs to consider AnimationGroup once added.
DCHECK(animation.effect()->IsKeyframeEffect());
const KeyframeEffect& effect = *ToKeyframeEffect(animation.effect());
if (!effect.IsCurrent())
continue;
UpdateAnimationFlagsForEffect(effect, style);
}
for (const auto& entry : worklet_animations_) {
const KeyframeEffect& effect = *entry->GetEffect();
// TODO(majidvp): we should check the effect's phase before updating the
// style once the timing of effect is ready to use.
// https://crbug.com/814851.
UpdateAnimationFlagsForEffect(effect, style);
}
if (style.HasCurrentOpacityAnimation()) {
style.SetIsRunningOpacityAnimationOnCompositor(
effect_stack_.HasActiveAnimationsOnCompositor(
PropertyHandle(GetCSSPropertyOpacity())));
}
if (style.HasCurrentTransformAnimation()) {
style.SetIsRunningTransformAnimationOnCompositor(
effect_stack_.HasActiveAnimationsOnCompositor(
PropertyHandle(GetCSSPropertyTransform())));
}
if (style.HasCurrentFilterAnimation()) {
style.SetIsRunningFilterAnimationOnCompositor(
effect_stack_.HasActiveAnimationsOnCompositor(
PropertyHandle(GetCSSPropertyFilter())));
}
if (style.HasCurrentBackdropFilterAnimation()) {
style.SetIsRunningBackdropFilterAnimationOnCompositor(
effect_stack_.HasActiveAnimationsOnCompositor(
PropertyHandle(GetCSSPropertyBackdropFilter())));
}
}
void ElementAnimations::RestartAnimationOnCompositor() {
for (const auto& entry : animations_)
entry.key->RestartAnimationOnCompositor();
}
void ElementAnimations::Trace(blink::Visitor* visitor) {
visitor->Trace(css_animations_);
visitor->Trace(effect_stack_);
visitor->Trace(animations_);
visitor->Trace(worklet_animations_);
}
const ComputedStyle* ElementAnimations::BaseComputedStyle() const {
// When DCHECK is on we lie and claim to never have a base computed style
// stored. This allows us to check that an invariant holds; see the comments in
// |UpdateBaseComputedStyle|.
#if !DCHECK_IS_ON()
if (IsAnimationStyleChange())
return base_computed_style_.get();
#endif
return nullptr;
}
void ElementAnimations::UpdateBaseComputedStyle(
const ComputedStyle* computed_style) {
DCHECK(computed_style);
if (!IsAnimationStyleChange()) {
base_computed_style_ = nullptr;
return;
}
#if DCHECK_IS_ON()
// The invariant in the base computed style optimization is that as long as
// |IsAnimationStyleChange| is true, the computed style that would be
// generated by the style resolver is equivalent to the one we hold
// internally. To ensure this we disable the optimization when DCHECKs are
// enabled, but keep the internal base computed style and make sure the
// equivalency holds here.
if (base_computed_style_ && computed_style &&
ShouldCheckComputedStyles(*base_computed_style_, *computed_style)) {
DCHECK(*base_computed_style_ == *computed_style);
}
#endif
base_computed_style_ = ComputedStyle::Clone(*computed_style);
}
void ElementAnimations::ClearBaseComputedStyle() {
base_computed_style_ = nullptr;
}
} // namespace blink
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