Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
/* Utilities for animation of computed style values */
#include "mozilla/StyleAnimationValue.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/PresShell.h"
#include "mozilla/PresShellInlines.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/UniquePtr.h"
#include "nsCOMArray.h"
#include "nsString.h"
#include "mozilla/ComputedStyle.h"
#include "nsComputedDOMStyle.h"
#include "nsCSSPseudoElements.h"
#include "mozilla/dom/Element.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/Likely.h"
#include "mozilla/ServoBindings.h" // StyleLockedDeclarationBlock
#include "mozilla/ServoCSSParser.h"
#include "gfxMatrix.h"
#include "gfxQuaternion.h"
#include "mozilla/dom/Document.h"
#include "nsIFrame.h"
#include "gfx2DGlue.h"
#include "mozilla/ComputedStyleInlines.h"
#include "mozilla/layers/LayersMessages.h"
using namespace mozilla;
using namespace mozilla::css;
using namespace mozilla::dom;
using namespace mozilla::gfx;
bool AnimationValue::operator==(const AnimationValue& aOther) const {
if (mServo && aOther.mServo) {
return Servo_AnimationValue_DeepEqual(mServo, aOther.mServo);
}
if (!mServo && !aOther.mServo) {
return true;
}
return false;
}
bool AnimationValue::operator!=(const AnimationValue& aOther) const {
return !operator==(aOther);
}
float AnimationValue::GetOpacity() const {
MOZ_ASSERT(mServo);
return Servo_AnimationValue_GetOpacity(mServo);
}
nscolor AnimationValue::GetColor(nscolor aForegroundColor) const {
MOZ_ASSERT(mServo);
return Servo_AnimationValue_GetColor(mServo, aForegroundColor);
}
bool AnimationValue::IsCurrentColor() const {
MOZ_ASSERT(mServo);
return Servo_AnimationValue_IsCurrentColor(mServo);
}
const StyleTranslate& AnimationValue::GetTranslateProperty() const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetTranslate(mServo);
}
const StyleRotate& AnimationValue::GetRotateProperty() const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetRotate(mServo);
}
const StyleScale& AnimationValue::GetScaleProperty() const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetScale(mServo);
}
const StyleTransform& AnimationValue::GetTransformProperty() const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetTransform(mServo);
}
void AnimationValue::GetOffsetPathProperty(StyleOffsetPath& aOffsetPath) const {
MOZ_ASSERT(mServo);
Servo_AnimationValue_GetOffsetPath(mServo, &aOffsetPath);
}
const mozilla::LengthPercentage& AnimationValue::GetOffsetDistanceProperty()
const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetOffsetDistance(mServo);
}
const mozilla::StyleOffsetRotate& AnimationValue::GetOffsetRotateProperty()
const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetOffsetRotate(mServo);
}
const mozilla::StylePositionOrAuto& AnimationValue::GetOffsetAnchorProperty()
const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetOffsetAnchor(mServo);
}
const mozilla::StyleOffsetPosition& AnimationValue::GetOffsetPositionProperty()
const {
MOZ_ASSERT(mServo);
return *Servo_AnimationValue_GetOffsetPosition(mServo);
}
bool AnimationValue::IsOffsetPathUrl() const {
return mServo && Servo_AnimationValue_IsOffsetPathUrl(mServo);
}
MatrixScales AnimationValue::GetScaleValue(const nsIFrame* aFrame) const {
using namespace nsStyleTransformMatrix;
AnimatedPropertyID property(eCSSProperty_UNKNOWN);
Servo_AnimationValue_GetPropertyId(mServo, &property);
switch (property.mID) {
case eCSSProperty_scale: {
const StyleScale& scale = GetScaleProperty();
return scale.IsNone()
? MatrixScales()
: MatrixScales(scale.AsScale()._0, scale.AsScale()._1);
}
case eCSSProperty_rotate:
case eCSSProperty_translate:
return MatrixScales();
case eCSSProperty_transform:
break;
default:
MOZ_ASSERT_UNREACHABLE(
"Should only need to check in transform properties");
return MatrixScales();
}
TransformReferenceBox refBox(aFrame);
Matrix4x4 t =
ReadTransforms(StyleTranslate::None(), StyleRotate::None(),
StyleScale::None(), nullptr, GetTransformProperty(),
refBox, aFrame->PresContext()->AppUnitsPerDevPixel());
Matrix transform2d;
bool canDraw2D = t.CanDraw2D(&transform2d);
if (!canDraw2D) {
return MatrixScales(0, 0);
}
return transform2d.ScaleFactors();
}
void AnimationValue::SerializeSpecifiedValue(
const AnimatedPropertyID& aProperty,
const StylePerDocumentStyleData* aRawData, nsACString& aString) const {
MOZ_ASSERT(mServo);
Servo_AnimationValue_Serialize(mServo, &aProperty, aRawData, &aString);
}
bool AnimationValue::IsInterpolableWith(const AnimatedPropertyID& aProperty,
const AnimationValue& aToValue) const {
if (IsNull() || aToValue.IsNull()) {
return false;
}
MOZ_ASSERT(mServo);
MOZ_ASSERT(aToValue.mServo);
return Servo_AnimationValues_IsInterpolable(mServo, aToValue.mServo);
}
double AnimationValue::ComputeDistance(const AnimationValue& aOther) const {
if (IsNull() || aOther.IsNull()) {
return 0.0;
}
MOZ_ASSERT(mServo);
MOZ_ASSERT(aOther.mServo);
double distance =
Servo_AnimationValues_ComputeDistance(mServo, aOther.mServo);
return distance < 0.0 ? 0.0 : distance;
}
/* static */
AnimationValue AnimationValue::FromString(AnimatedPropertyID& aProperty,
const nsACString& aValue,
Element* aElement) {
MOZ_ASSERT(aElement);
AnimationValue result;
nsCOMPtr<Document> doc = aElement->GetComposedDoc();
if (!doc) {
return result;
}
RefPtr<PresShell> presShell = doc->GetPresShell();
if (!presShell) {
return result;
}
// GetComputedStyle() flushes style, so we shouldn't assume that any
// non-owning references we have are still valid.
RefPtr<const ComputedStyle> computedStyle =
nsComputedDOMStyle::GetComputedStyle(aElement);
MOZ_ASSERT(computedStyle);
RefPtr<StyleLockedDeclarationBlock> declarations =
ServoCSSParser::ParseProperty(aProperty, aValue,
ServoCSSParser::GetParsingEnvironment(doc),
StyleParsingMode::DEFAULT);
if (!declarations) {
return result;
}
result.mServo = presShell->StyleSet()->ComputeAnimationValue(
aElement, declarations, computedStyle);
return result;
}
/* static */
already_AddRefed<StyleAnimationValue> AnimationValue::FromAnimatable(
nsCSSPropertyID aProperty, const layers::Animatable& aAnimatable) {
switch (aAnimatable.type()) {
case layers::Animatable::Tnull_t:
break;
case layers::Animatable::TStyleTransform: {
const StyleTransform& transform = aAnimatable.get_StyleTransform();
MOZ_ASSERT(!transform.HasPercent(),
"Received transform operations should have been resolved.");
return Servo_AnimationValue_Transform(&transform).Consume();
}
case layers::Animatable::Tfloat:
return Servo_AnimationValue_Opacity(aAnimatable.get_float()).Consume();
case layers::Animatable::Tnscolor:
return Servo_AnimationValue_Color(aProperty, aAnimatable.get_nscolor())
.Consume();
case layers::Animatable::TStyleRotate:
return Servo_AnimationValue_Rotate(&aAnimatable.get_StyleRotate())
.Consume();
case layers::Animatable::TStyleScale:
return Servo_AnimationValue_Scale(&aAnimatable.get_StyleScale())
.Consume();
case layers::Animatable::TStyleTranslate:
MOZ_ASSERT(
aAnimatable.get_StyleTranslate().IsNone() ||
(!aAnimatable.get_StyleTranslate()
.AsTranslate()
._0.HasPercent() &&
!aAnimatable.get_StyleTranslate().AsTranslate()._1.HasPercent()),
"Should have been resolved already");
return Servo_AnimationValue_Translate(&aAnimatable.get_StyleTranslate())
.Consume();
case layers::Animatable::TStyleOffsetPath:
return Servo_AnimationValue_OffsetPath(&aAnimatable.get_StyleOffsetPath())
.Consume();
case layers::Animatable::TLengthPercentage:
return Servo_AnimationValue_OffsetDistance(
&aAnimatable.get_LengthPercentage())
.Consume();
case layers::Animatable::TStyleOffsetRotate:
return Servo_AnimationValue_OffsetRotate(
&aAnimatable.get_StyleOffsetRotate())
.Consume();
case layers::Animatable::TStylePositionOrAuto:
return Servo_AnimationValue_OffsetAnchor(
&aAnimatable.get_StylePositionOrAuto())
.Consume();
case layers::Animatable::TStyleOffsetPosition:
return Servo_AnimationValue_OffsetPosition(
&aAnimatable.get_StyleOffsetPosition())
.Consume();
default:
MOZ_ASSERT_UNREACHABLE("Unsupported type");
}
return nullptr;
}