// Go down the composite layer tree, setting properties to match their
// content-side counterparts.
static void
SetShadowProperties(Layer* aLayer)
{
// FIXME: Bug 717688 -- Do these updates in LayerTransactionParent::RecvUpdate.
LayerComposite* layerComposite = aLayer->AsLayerComposite();
// Set the layerComposite's base transform to the layer's base transform.
layerComposite->SetShadowTransform(aLayer->GetBaseTransform());
layerComposite->SetShadowTransformSetByAnimation(false);
layerComposite->SetShadowVisibleRegion(aLayer->GetVisibleRegion());
layerComposite->SetShadowClipRect(aLayer->GetClipRect());
layerComposite->SetShadowOpacity(aLayer->GetOpacity());
for (Layer* child = aLayer->GetFirstChild();
child; child = child->GetNextSibling()) {
SetShadowProperties(child);
}
}
static void
TranslateShadowLayer2D(Layer* aLayer,
const gfxPoint& aTranslation)
{
// This layer might also be a scrollable layer and have an async transform.
// To make sure we don't clobber that, we start with the shadow transform.
// Any adjustments to the shadow transform made in this function in previous
// frames have been cleared in ClearAsyncTransforms(), so such adjustments
// will not compound over successive frames.
Matrix layerTransform;
if (!aLayer->GetLocalTransform().Is2D(&layerTransform)) {
return;
}
// Apply the 2D translation to the layer transform.
layerTransform._31 += aTranslation.x;
layerTransform._32 += aTranslation.y;
// The transform already takes the resolution scale into account. Since we
// will apply the resolution scale again when computing the effective
// transform, we must apply the inverse resolution scale here.
Matrix4x4 layerTransform3D = Matrix4x4::From2D(layerTransform);
if (ContainerLayer* c = aLayer->AsContainerLayer()) {
layerTransform3D.Scale(1.0f/c->GetPreXScale(),
1.0f/c->GetPreYScale(),
1);
}
layerTransform3D = layerTransform3D *
Matrix4x4().Scale(1.0f/aLayer->GetPostXScale(),
1.0f/aLayer->GetPostYScale(),
1);
LayerComposite* layerComposite = aLayer->AsLayerComposite();
layerComposite->SetShadowTransform(layerTransform3D);
layerComposite->SetShadowTransformSetByAnimation(false);
const nsIntRect* clipRect = aLayer->GetClipRect();
if (clipRect) {
nsIntRect transformedClipRect(*clipRect);
transformedClipRect.MoveBy(aTranslation.x, aTranslation.y);
layerComposite->SetShadowClipRect(&transformedClipRect);
}
}
static void
TranslateShadowLayer2D(Layer* aLayer,
const gfxPoint& aTranslation)
{
gfxMatrix layerTransform;
if (!GetBaseTransform2D(aLayer, &layerTransform)) {
return;
}
// Apply the 2D translation to the layer transform.
layerTransform.x0 += aTranslation.x;
layerTransform.y0 += aTranslation.y;
// The transform already takes the resolution scale into account. Since we
// will apply the resolution scale again when computing the effective
// transform, we must apply the inverse resolution scale here.
gfx3DMatrix layerTransform3D = gfx3DMatrix::From2D(layerTransform);
if (ContainerLayer* c = aLayer->AsContainerLayer()) {
layerTransform3D.Scale(1.0f/c->GetPreXScale(),
1.0f/c->GetPreYScale(),
1);
}
layerTransform3D.ScalePost(1.0f/aLayer->GetPostXScale(),
1.0f/aLayer->GetPostYScale(),
1);
LayerComposite* layerComposite = aLayer->AsLayerComposite();
layerComposite->SetShadowTransform(layerTransform3D);
layerComposite->SetShadowTransformSetByAnimation(false);
const nsIntRect* clipRect = aLayer->GetClipRect();
if (clipRect) {
nsIntRect transformedClipRect(*clipRect);
transformedClipRect.MoveBy(aTranslation.x, aTranslation.y);
layerComposite->SetShadowClipRect(&transformedClipRect);
}
}
// Go down shadow layer tree and apply transformations for scrollable layers.
static void
TransformShadowTree(nsDisplayListBuilder* aBuilder, nsFrameLoader* aFrameLoader,
nsIFrame* aFrame, Layer* aLayer,
const ViewTransform& aTransform,
float aTempScaleDiffX = 1.0,
float aTempScaleDiffY = 1.0)
{
LayerComposite* shadow = aLayer->AsLayerComposite();
shadow->SetShadowClipRect(aLayer->GetClipRect());
shadow->SetShadowVisibleRegion(aLayer->GetVisibleRegion());
shadow->SetShadowOpacity(aLayer->GetOpacity());
const FrameMetrics* metrics = GetFrameMetrics(aLayer);
gfx3DMatrix shadowTransform = aLayer->GetTransform();
ViewTransform layerTransform = aTransform;
if (metrics && metrics->IsScrollable()) {
const ViewID scrollId = metrics->mScrollId;
const nsContentView* view =
aFrameLoader->GetCurrentRemoteFrame()->GetContentView(scrollId);
NS_ABORT_IF_FALSE(view, "Array of views should be consistent with layer tree");
const gfx3DMatrix& currentTransform = aLayer->GetTransform();
const ViewConfig& config = view->GetViewConfig();
// With temporary scale we should compensate translation
// using temporary scale value
aTempScaleDiffX *= GetXScale(shadowTransform) * config.mXScale;
aTempScaleDiffY *= GetYScale(shadowTransform) * config.mYScale;
ViewTransform viewTransform = ComputeShadowTreeTransform(
aFrame, aFrameLoader, metrics, view->GetViewConfig(),
aTempScaleDiffX, aTempScaleDiffY
);
// Apply the layer's own transform *before* the view transform
shadowTransform = gfx3DMatrix(viewTransform) * currentTransform;
layerTransform = viewTransform;
if (metrics->IsRootScrollable()) {
// Apply the translation *before* we do the rest of the transforms.
nsIntPoint offset = GetContentRectLayerOffset(aFrame, aBuilder);
shadowTransform = shadowTransform *
gfx3DMatrix::Translation(float(offset.x), float(offset.y), 0.0);
}
}
if (aLayer->GetIsFixedPosition() &&
!aLayer->GetParent()->GetIsFixedPosition()) {
// Alter the shadow transform of fixed position layers in the situation
// that the view transform's scroll position doesn't match the actual
// scroll position, due to asynchronous layer scrolling.
float offsetX = layerTransform.mTranslation.x;
float offsetY = layerTransform.mTranslation.y;
ReverseTranslate(shadowTransform, gfxPoint(offsetX, offsetY));
const nsIntRect* clipRect = shadow->GetShadowClipRect();
if (clipRect) {
nsIntRect transformedClipRect(*clipRect);
transformedClipRect.MoveBy(-offsetX, -offsetY);
shadow->SetShadowClipRect(&transformedClipRect);
}
}
// The transform already takes the resolution scale into account. Since we
// will apply the resolution scale again when computing the effective
// transform, we must apply the inverse resolution scale here.
if (ContainerLayer* c = aLayer->AsContainerLayer()) {
shadowTransform.Scale(1.0f/c->GetPreXScale(),
1.0f/c->GetPreYScale(),
1);
}
shadowTransform.ScalePost(1.0f/aLayer->GetPostXScale(),
1.0f/aLayer->GetPostYScale(),
1);
shadow->SetShadowTransform(shadowTransform);
for (Layer* child = aLayer->GetFirstChild();
child; child = child->GetNextSibling()) {
TransformShadowTree(aBuilder, aFrameLoader, aFrame, child, layerTransform,
aTempScaleDiffX, aTempScaleDiffY);
}
}
void
AsyncCompositionManager::TransformScrollableLayer(Layer* aLayer, const LayoutDeviceToLayerScale& aResolution)
{
LayerComposite* layerComposite = aLayer->AsLayerComposite();
ContainerLayer* container = aLayer->AsContainerLayer();
const FrameMetrics& metrics = container->GetFrameMetrics();
// We must apply the resolution scale before a pan/zoom transform, so we call
// GetTransform here.
const gfx3DMatrix& currentTransform = aLayer->GetTransform();
gfx3DMatrix oldTransform = currentTransform;
gfx3DMatrix treeTransform;
CSSToLayerScale geckoZoom = metrics.mDevPixelsPerCSSPixel * aResolution;
LayerIntPoint scrollOffsetLayerPixels = RoundedToInt(metrics.mScrollOffset * geckoZoom);
if (mIsFirstPaint) {
mContentRect = metrics.mScrollableRect;
SetFirstPaintViewport(scrollOffsetLayerPixels,
geckoZoom,
mContentRect);
mIsFirstPaint = false;
} else if (!metrics.mScrollableRect.IsEqualEdges(mContentRect)) {
mContentRect = metrics.mScrollableRect;
SetPageRect(mContentRect);
}
// We synchronise the viewport information with Java after sending the above
// notifications, so that Java can take these into account in its response.
// Calculate the absolute display port to send to Java
LayerIntRect displayPort = RoundedToInt(
(metrics.mCriticalDisplayPort.IsEmpty()
? metrics.mDisplayPort
: metrics.mCriticalDisplayPort
) * geckoZoom);
displayPort += scrollOffsetLayerPixels;
LayerMargin fixedLayerMargins(0, 0, 0, 0);
ScreenPoint offset(0, 0);
// Ideally we would initialize userZoom to AsyncPanZoomController::CalculateResolution(metrics)
// but this causes a reftest-ipc test to fail (see bug 883646 comment 27). The reason for this
// appears to be that metrics.mZoom is poorly initialized in some scenarios. In these scenarios,
// however, we can assume there is no async zooming in progress and so the following statement
// works fine.
CSSToScreenScale userZoom(metrics.mDevPixelsPerCSSPixel.scale * metrics.mResolution.scale);
ScreenPoint userScroll = metrics.mScrollOffset * userZoom;
SyncViewportInfo(displayPort, geckoZoom, mLayersUpdated,
userScroll, userZoom, fixedLayerMargins,
offset);
mLayersUpdated = false;
// Apply the render offset
mLayerManager->GetCompositor()->SetScreenRenderOffset(offset);
// Handle transformations for asynchronous panning and zooming. We determine the
// zoom used by Gecko from the transformation set on the root layer, and we
// determine the scroll offset used by Gecko from the frame metrics of the
// primary scrollable layer. We compare this to the user zoom and scroll
// offset in the view transform we obtained from Java in order to compute the
// transformation we need to apply.
LayerToScreenScale zoomAdjust = userZoom / geckoZoom;
LayerIntPoint geckoScroll(0, 0);
if (metrics.IsScrollable()) {
geckoScroll = scrollOffsetLayerPixels;
}
LayerPoint translation = (userScroll / zoomAdjust) - geckoScroll;
treeTransform = gfx3DMatrix(ViewTransform(-translation, userZoom / metrics.mDevPixelsPerCSSPixel));
// The transform already takes the resolution scale into account. Since we
// will apply the resolution scale again when computing the effective
// transform, we must apply the inverse resolution scale here.
gfx3DMatrix computedTransform = treeTransform * currentTransform;
computedTransform.Scale(1.0f/container->GetPreXScale(),
1.0f/container->GetPreYScale(),
1);
computedTransform.ScalePost(1.0f/container->GetPostXScale(),
1.0f/container->GetPostYScale(),
1);
layerComposite->SetShadowTransform(computedTransform);
NS_ASSERTION(!layerComposite->GetShadowTransformSetByAnimation(),
"overwriting animated transform!");
// Apply resolution scaling to the old transform - the layer tree as it is
// doesn't have the necessary transform to display correctly.
oldTransform.Scale(aResolution.scale, aResolution.scale, 1);
// Make sure that overscroll and under-zoom are represented in the old
// transform so that fixed position content moves and scales accordingly.
// These calculations will effectively scale and offset fixed position layers
// in screen space when the compensatory transform is performed in
// AlignFixedLayersForAnchorPoint.
ScreenRect contentScreenRect = mContentRect * userZoom;
gfxPoint3D overscrollTranslation;
if (userScroll.x < contentScreenRect.x) {
overscrollTranslation.x = contentScreenRect.x - userScroll.x;
} else if (userScroll.x + metrics.mCompositionBounds.width > contentScreenRect.XMost()) {
overscrollTranslation.x = contentScreenRect.XMost() -
(userScroll.x + metrics.mCompositionBounds.width);
}
if (userScroll.y < contentScreenRect.y) {
overscrollTranslation.y = contentScreenRect.y - userScroll.y;
} else if (userScroll.y + metrics.mCompositionBounds.height > contentScreenRect.YMost()) {
overscrollTranslation.y = contentScreenRect.YMost() -
(userScroll.y + metrics.mCompositionBounds.height);
}
oldTransform.Translate(overscrollTranslation);
gfxSize underZoomScale(1.0f, 1.0f);
if (mContentRect.width * userZoom.scale < metrics.mCompositionBounds.width) {
underZoomScale.width = (mContentRect.width * userZoom.scale) /
metrics.mCompositionBounds.width;
}
if (mContentRect.height * userZoom.scale < metrics.mCompositionBounds.height) {
underZoomScale.height = (mContentRect.height * userZoom.scale) /
metrics.mCompositionBounds.height;
}
oldTransform.Scale(underZoomScale.width, underZoomScale.height, 1);
// Make sure fixed position layers don't move away from their anchor points
// when we're asynchronously panning or zooming
AlignFixedLayersForAnchorPoint(aLayer, aLayer, oldTransform, fixedLayerMargins);
}
bool
AsyncCompositionManager::ApplyAsyncContentTransformToTree(TimeStamp aCurrentFrame,
Layer *aLayer,
bool* aWantNextFrame)
{
bool appliedTransform = false;
for (Layer* child = aLayer->GetFirstChild();
child; child = child->GetNextSibling()) {
appliedTransform |=
ApplyAsyncContentTransformToTree(aCurrentFrame, child, aWantNextFrame);
}
ContainerLayer* container = aLayer->AsContainerLayer();
if (!container) {
return appliedTransform;
}
if (AsyncPanZoomController* controller = container->GetAsyncPanZoomController()) {
LayerComposite* layerComposite = aLayer->AsLayerComposite();
gfx3DMatrix oldTransform = aLayer->GetTransform();
ViewTransform treeTransform;
ScreenPoint scrollOffset;
*aWantNextFrame |=
controller->SampleContentTransformForFrame(aCurrentFrame,
&treeTransform,
scrollOffset);
const gfx3DMatrix& rootTransform = mLayerManager->GetRoot()->GetTransform();
const FrameMetrics& metrics = container->GetFrameMetrics();
// XXX We use rootTransform instead of metrics.mResolution here because on
// Fennec the resolution is set on the root layer rather than the scrollable layer.
// The SyncFrameMetrics call and the paintScale variable are used on Fennec only
// so it doesn't affect any other platforms. See bug 732971.
CSSToLayerScale paintScale = metrics.mDevPixelsPerCSSPixel
/ LayerToLayoutDeviceScale(rootTransform.GetXScale(), rootTransform.GetYScale());
CSSRect displayPort(metrics.mCriticalDisplayPort.IsEmpty() ?
metrics.mDisplayPort : metrics.mCriticalDisplayPort);
LayerMargin fixedLayerMargins(0, 0, 0, 0);
ScreenPoint offset(0, 0);
SyncFrameMetrics(scrollOffset, treeTransform.mScale.scale, metrics.mScrollableRect,
mLayersUpdated, displayPort, paintScale,
mIsFirstPaint, fixedLayerMargins, offset);
mIsFirstPaint = false;
mLayersUpdated = false;
// Apply the render offset
mLayerManager->GetCompositor()->SetScreenRenderOffset(offset);
gfx3DMatrix transform(gfx3DMatrix(treeTransform) * aLayer->GetTransform());
// The transform already takes the resolution scale into account. Since we
// will apply the resolution scale again when computing the effective
// transform, we must apply the inverse resolution scale here.
transform.Scale(1.0f/container->GetPreXScale(),
1.0f/container->GetPreYScale(),
1);
transform.ScalePost(1.0f/aLayer->GetPostXScale(),
1.0f/aLayer->GetPostYScale(),
1);
layerComposite->SetShadowTransform(transform);
NS_ASSERTION(!layerComposite->GetShadowTransformSetByAnimation(),
"overwriting animated transform!");
// Apply resolution scaling to the old transform - the layer tree as it is
// doesn't have the necessary transform to display correctly.
#ifdef MOZ_WIDGET_ANDROID
// XXX We use rootTransform instead of the resolution on the individual layer's
// FrameMetrics on Fennec because the resolution is set on the root layer rather
// than the scrollable layer. See bug 732971. On non-Fennec we do the right thing.
LayoutDeviceToLayerScale resolution(1.0 / rootTransform.GetXScale(),
1.0 / rootTransform.GetYScale());
#else
LayoutDeviceToLayerScale resolution = metrics.mResolution;
#endif
oldTransform.Scale(resolution.scale, resolution.scale, 1);
AlignFixedLayersForAnchorPoint(aLayer, aLayer, oldTransform, fixedLayerMargins);
appliedTransform = true;
}
return appliedTransform;
}
static bool
SampleAnimations(Layer* aLayer, TimeStamp aPoint)
{
AnimationArray& animations = aLayer->GetAnimations();
InfallibleTArray<AnimData>& animationData = aLayer->GetAnimationData();
bool activeAnimations = false;
for (uint32_t i = animations.Length(); i-- !=0; ) {
Animation& animation = animations[i];
AnimData& animData = animationData[i];
double numIterations = animation.numIterations() != -1 ?
animation.numIterations() : NS_IEEEPositiveInfinity();
double positionInIteration =
ElementAnimations::GetPositionInIteration(aPoint - animation.startTime(),
animation.duration(),
numIterations,
animation.direction());
NS_ABORT_IF_FALSE(0.0 <= positionInIteration &&
positionInIteration <= 1.0,
"position should be in [0-1]");
int segmentIndex = 0;
AnimationSegment* segment = animation.segments().Elements();
while (segment->endPortion() < positionInIteration) {
++segment;
++segmentIndex;
}
double positionInSegment = (positionInIteration - segment->startPortion()) /
(segment->endPortion() - segment->startPortion());
double portion = animData.mFunctions[segmentIndex]->GetValue(positionInSegment);
activeAnimations = true;
// interpolate the property
Animatable interpolatedValue;
SampleValue(portion, animation, animData.mStartValues[segmentIndex],
animData.mEndValues[segmentIndex], &interpolatedValue);
LayerComposite* layerComposite = aLayer->AsLayerComposite();
switch (animation.property()) {
case eCSSProperty_opacity:
{
layerComposite->SetShadowOpacity(interpolatedValue.get_float());
break;
}
case eCSSProperty_transform:
{
gfx3DMatrix matrix = interpolatedValue.get_ArrayOfTransformFunction()[0].get_TransformMatrix().value();
if (ContainerLayer* c = aLayer->AsContainerLayer()) {
matrix.ScalePost(c->GetInheritedXScale(),
c->GetInheritedYScale(),
1);
}
layerComposite->SetShadowTransform(matrix);
layerComposite->SetShadowTransformSetByAnimation(true);
break;
}
default:
NS_WARNING("Unhandled animated property");
}
}
for (Layer* child = aLayer->GetFirstChild(); child;
child = child->GetNextSibling()) {
activeAnimations |= SampleAnimations(child, aPoint);
}
return activeAnimations;
}
bool
AsyncCompositionManager::ApplyAsyncContentTransformToTree(Layer *aLayer)
{
bool appliedTransform = false;
for (Layer* child = aLayer->GetFirstChild();
child; child = child->GetNextSibling()) {
appliedTransform |=
ApplyAsyncContentTransformToTree(child);
}
if (AsyncPanZoomController* controller = aLayer->GetAsyncPanZoomController()) {
LayerComposite* layerComposite = aLayer->AsLayerComposite();
Matrix4x4 oldTransform = aLayer->GetTransform();
ViewTransform asyncTransformWithoutOverscroll, overscrollTransform;
ScreenPoint scrollOffset;
controller->SampleContentTransformForFrame(&asyncTransformWithoutOverscroll,
scrollOffset,
&overscrollTransform);
const FrameMetrics& metrics = aLayer->GetFrameMetrics();
CSSToLayerScale paintScale = metrics.LayersPixelsPerCSSPixel();
CSSRect displayPort(metrics.mCriticalDisplayPort.IsEmpty() ?
metrics.mDisplayPort : metrics.mCriticalDisplayPort);
LayerMargin fixedLayerMargins(0, 0, 0, 0);
ScreenPoint offset(0, 0);
SyncFrameMetrics(scrollOffset, asyncTransformWithoutOverscroll.mScale.scale,
metrics.mScrollableRect, mLayersUpdated, displayPort,
paintScale, mIsFirstPaint, fixedLayerMargins, offset);
mIsFirstPaint = false;
mLayersUpdated = false;
// Apply the render offset
mLayerManager->GetCompositor()->SetScreenRenderOffset(offset);
Matrix4x4 transform = AdjustAndCombineWithCSSTransform(
asyncTransformWithoutOverscroll * overscrollTransform, aLayer);
// GetTransform already takes the pre- and post-scale into account. Since we
// will apply the pre- and post-scale again when computing the effective
// transform, we must apply the inverses here.
if (ContainerLayer* container = aLayer->AsContainerLayer()) {
transform.Scale(1.0f/container->GetPreXScale(),
1.0f/container->GetPreYScale(),
1);
}
transform = transform * Matrix4x4().Scale(1.0f/aLayer->GetPostXScale(),
1.0f/aLayer->GetPostYScale(),
1);
layerComposite->SetShadowTransform(transform);
NS_ASSERTION(!layerComposite->GetShadowTransformSetByAnimation(),
"overwriting animated transform!");
// Apply resolution scaling to the old transform - the layer tree as it is
// doesn't have the necessary transform to display correctly.
LayoutDeviceToLayerScale resolution = metrics.mCumulativeResolution;
oldTransform.Scale(resolution.scale, resolution.scale, 1);
// For the purpose of aligning fixed and sticky layers, we disregard
// the overscroll transform when computing the 'aCurrentTransformForRoot'
// parameter. This ensures that the overscroll transform is not unapplied,
// and therefore that the visual effect applies to fixed and sticky layers.
Matrix4x4 transformWithoutOverscroll = AdjustAndCombineWithCSSTransform(
asyncTransformWithoutOverscroll, aLayer);
AlignFixedAndStickyLayers(aLayer, aLayer, oldTransform,
transformWithoutOverscroll, fixedLayerMargins);
appliedTransform = true;
}
if (aLayer->AsContainerLayer() && aLayer->GetScrollbarDirection() != Layer::NONE) {
ApplyAsyncTransformToScrollbar(aLayer->AsContainerLayer());
}
return appliedTransform;
}
static bool
SampleAnimations(Layer* aLayer, TimeStamp aPoint)
{
AnimationArray& animations = aLayer->GetAnimations();
InfallibleTArray<AnimData>& animationData = aLayer->GetAnimationData();
bool activeAnimations = false;
for (uint32_t i = animations.Length(); i-- !=0; ) {
Animation& animation = animations[i];
AnimData& animData = animationData[i];
activeAnimations = true;
TimeDuration elapsedDuration = aPoint - animation.startTime();
// Skip animations that are yet to start.
//
// Currently, this should only happen when the refresh driver is under test
// control and is made to produce a time in the past or is restored from
// test control causing it to jump backwards in time.
//
// Since activeAnimations is true, this could mean we keep compositing
// unnecessarily during the delay, but so long as this only happens while
// the refresh driver is under test control that should be ok.
if (elapsedDuration.ToSeconds() < 0) {
continue;
}
AnimationTiming timing;
timing.mIterationDuration = animation.duration();
// Currently animations run on the compositor have their delay factored
// into their start time, hence the delay is effectively zero.
timing.mDelay = TimeDuration(0);
timing.mIterationCount = animation.iterationCount();
timing.mDirection = animation.direction();
// Animations typically only run on the compositor during their active
// interval but if we end up sampling them outside that range (for
// example, while they are waiting to be removed) we currently just
// assume that we should fill.
timing.mFillMode = NS_STYLE_ANIMATION_FILL_MODE_BOTH;
ComputedTiming computedTiming =
dom::Animation::GetComputedTimingAt(
Nullable<TimeDuration>(elapsedDuration), timing);
NS_ABORT_IF_FALSE(0.0 <= computedTiming.mTimeFraction &&
computedTiming.mTimeFraction <= 1.0,
"time fraction should be in [0-1]");
int segmentIndex = 0;
AnimationSegment* segment = animation.segments().Elements();
while (segment->endPortion() < computedTiming.mTimeFraction) {
++segment;
++segmentIndex;
}
double positionInSegment =
(computedTiming.mTimeFraction - segment->startPortion()) /
(segment->endPortion() - segment->startPortion());
double portion =
animData.mFunctions[segmentIndex]->GetValue(positionInSegment);
// interpolate the property
Animatable interpolatedValue;
SampleValue(portion, animation, animData.mStartValues[segmentIndex],
animData.mEndValues[segmentIndex], &interpolatedValue);
LayerComposite* layerComposite = aLayer->AsLayerComposite();
switch (animation.property()) {
case eCSSProperty_opacity:
{
layerComposite->SetShadowOpacity(interpolatedValue.get_float());
break;
}
case eCSSProperty_transform:
{
Matrix4x4 matrix = interpolatedValue.get_ArrayOfTransformFunction()[0].get_TransformMatrix().value();
if (ContainerLayer* c = aLayer->AsContainerLayer()) {
matrix = matrix * Matrix4x4().Scale(c->GetInheritedXScale(),
c->GetInheritedYScale(),
1);
}
layerComposite->SetShadowTransform(matrix);
layerComposite->SetShadowTransformSetByAnimation(true);
break;
}
default:
NS_WARNING("Unhandled animated property");
}
}
for (Layer* child = aLayer->GetFirstChild(); child;
child = child->GetNextSibling()) {
activeAnimations |= SampleAnimations(child, aPoint);
}
return activeAnimations;
}