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gecko/gfx/layers/Layers.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/DebugOnly.h"
#include "mozilla/layers/PLayers.h"
#include "mozilla/layers/ShadowLayers.h"
#include "mozilla/Telemetry.h"
#include "ImageLayers.h"
#include "ImageContainer.h"
#include "Layers.h"
#include "gfxPlatform.h"
#include "ReadbackLayer.h"
#include "gfxUtils.h"
#include "nsPrintfCString.h"
#include "LayerSorter.h"
#include "AnimationCommon.h"
using namespace mozilla::layers;
using namespace mozilla::gfx;
typedef FrameMetrics::ViewID ViewID;
const ViewID FrameMetrics::NULL_SCROLL_ID = 0;
const ViewID FrameMetrics::ROOT_SCROLL_ID = 1;
const ViewID FrameMetrics::START_SCROLL_ID = 2;
uint8_t gLayerManagerLayerBuilder;
#ifdef MOZ_LAYERS_HAVE_LOG
FILE*
FILEOrDefault(FILE* aFile)
{
return aFile ? aFile : stderr;
}
#endif // MOZ_LAYERS_HAVE_LOG
namespace {
// XXX pretty general utilities, could centralize
nsACString&
AppendToString(nsACString& s, const void* p,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString("%p", p);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const gfxPattern::GraphicsFilter& f,
const char* pfx="", const char* sfx="")
{
s += pfx;
switch (f) {
case gfxPattern::FILTER_FAST: s += "fast"; break;
case gfxPattern::FILTER_GOOD: s += "good"; break;
case gfxPattern::FILTER_BEST: s += "best"; break;
case gfxPattern::FILTER_NEAREST: s += "nearest"; break;
case gfxPattern::FILTER_BILINEAR: s += "bilinear"; break;
case gfxPattern::FILTER_GAUSSIAN: s += "gaussian"; break;
default:
NS_ERROR("unknown filter type");
s += "???";
}
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, ViewID n,
const char* pfx="", const char* sfx="")
{
s += pfx;
s.AppendInt(n);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const gfxRGBA& c,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString(
"rgba(%d, %d, %d, %g)",
uint8_t(c.r*255.0), uint8_t(c.g*255.0), uint8_t(c.b*255.0), c.a);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const gfx3DMatrix& m,
const char* pfx="", const char* sfx="")
{
s += pfx;
if (m.IsIdentity())
s += "[ I ]";
else {
gfxMatrix matrix;
if (m.Is2D(&matrix)) {
s += nsPrintfCString(
"[ %g %g; %g %g; %g %g; ]",
matrix.xx, matrix.yx, matrix.xy, matrix.yy, matrix.x0, matrix.y0);
} else {
s += nsPrintfCString(
"[ %g %g %g %g; %g %g %g %g; %g %g %g %g; %g %g %g %g; ]",
m._11, m._12, m._13, m._14,
m._21, m._22, m._23, m._24,
m._31, m._32, m._33, m._34,
m._41, m._42, m._43, m._44);
}
}
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntPoint& p,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString("(x=%d, y=%d)", p.x, p.y);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const Point& p,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString("(x=%f, y=%f)", p.x, p.y);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntRect& r,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString(
"(x=%d, y=%d, w=%d, h=%d)",
r.x, r.y, r.width, r.height);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const Rect& r,
const char* pfx="", const char* sfx="")
{
s += pfx;
s.AppendPrintf(
"(x=%f, y=%f, w=%f, h=%f)",
r.x, r.y, r.width, r.height);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntRegion& r,
const char* pfx="", const char* sfx="")
{
s += pfx;
nsIntRegionRectIterator it(r);
s += "< ";
while (const nsIntRect* sr = it.Next())
AppendToString(s, *sr) += "; ";
s += ">";
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntSize& sz,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString("(w=%d, h=%d)", sz.width, sz.height);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const FrameMetrics& m,
const char* pfx="", const char* sfx="")
{
s += pfx;
AppendToString(s, m.mViewport, "{ viewport=");
AppendToString(s, m.mScrollOffset, " viewportScroll=");
AppendToString(s, m.mDisplayPort, " displayport=");
AppendToString(s, m.mScrollId, " scrollId=", " }");
return s += sfx;
}
} // namespace <anon>
namespace mozilla {
namespace layers {
//--------------------------------------------------
// LayerManager
Layer*
LayerManager::GetPrimaryScrollableLayer()
{
if (!mRoot) {
return nullptr;
}
nsTArray<Layer*> queue;
queue.AppendElement(mRoot);
while (queue.Length()) {
ContainerLayer* containerLayer = queue[0]->AsContainerLayer();
queue.RemoveElementAt(0);
if (!containerLayer) {
continue;
}
const FrameMetrics& frameMetrics = containerLayer->GetFrameMetrics();
if (frameMetrics.IsScrollable()) {
return containerLayer;
}
Layer* child = containerLayer->GetFirstChild();
while (child) {
queue.AppendElement(child);
child = child->GetNextSibling();
}
}
return mRoot;
}
void
LayerManager::GetScrollableLayers(nsTArray<Layer*>& aArray)
{
if (!mRoot) {
return;
}
nsTArray<Layer*> queue;
queue.AppendElement(mRoot);
while (!queue.IsEmpty()) {
ContainerLayer* containerLayer = queue.LastElement()->AsContainerLayer();
queue.RemoveElementAt(queue.Length() - 1);
if (!containerLayer) {
continue;
}
const FrameMetrics& frameMetrics = containerLayer->GetFrameMetrics();
if (frameMetrics.IsScrollable()) {
aArray.AppendElement(containerLayer);
continue;
}
Layer* child = containerLayer->GetFirstChild();
while (child) {
queue.AppendElement(child);
child = child->GetNextSibling();
}
}
}
already_AddRefed<gfxASurface>
LayerManager::CreateOptimalSurface(const gfxIntSize &aSize,
gfxASurface::gfxImageFormat aFormat)
{
return gfxPlatform::GetPlatform()->
CreateOffscreenSurface(aSize, gfxASurface::ContentFromFormat(aFormat));
}
already_AddRefed<gfxASurface>
LayerManager::CreateOptimalMaskSurface(const gfxIntSize &aSize)
{
return CreateOptimalSurface(aSize, gfxASurface::ImageFormatA8);
}
TemporaryRef<DrawTarget>
LayerManager::CreateDrawTarget(const IntSize &aSize,
SurfaceFormat aFormat)
{
return gfxPlatform::GetPlatform()->
CreateOffscreenDrawTarget(aSize, aFormat);
}
#ifdef DEBUG
void
LayerManager::Mutated(Layer* aLayer)
{
}
#endif // DEBUG
already_AddRefed<ImageContainer>
LayerManager::CreateImageContainer()
{
nsRefPtr<ImageContainer> container = new ImageContainer(ImageContainer::DISABLE_ASYNC);
return container.forget();
}
already_AddRefed<ImageContainer>
LayerManager::CreateAsynchronousImageContainer()
{
nsRefPtr<ImageContainer> container = new ImageContainer(ImageContainer::ENABLE_ASYNC);
return container.forget();
}
//--------------------------------------------------
// Layer
Layer::Layer(LayerManager* aManager, void* aImplData) :
mManager(aManager),
mParent(nullptr),
mNextSibling(nullptr),
mPrevSibling(nullptr),
mImplData(aImplData),
mMaskLayer(nullptr),
mPostXScale(1.0f),
mPostYScale(1.0f),
mOpacity(1.0),
mContentFlags(0),
mUseClipRect(false),
mUseTileSourceRect(false),
mIsFixedPosition(false),
mDebugColorIndex(0),
mAnimationGeneration(0)
{}
Layer::~Layer()
{}
Animation*
Layer::AddAnimation(TimeStamp aStart, TimeDuration aDuration, float aIterations,
int aDirection, nsCSSProperty aProperty, const AnimationData& aData)
{
Animation* anim = mAnimations.AppendElement();
anim->startTime() = aStart;
anim->duration() = aDuration;
anim->numIterations() = aIterations;
anim->direction() = aDirection;
anim->property() = aProperty;
anim->data() = aData;
Mutated();
return anim;
}
void
Layer::ClearAnimations()
{
mAnimations.Clear();
mAnimationData.Clear();
Mutated();
}
static nsCSSValueList*
CreateCSSValueList(const InfallibleTArray<TransformFunction>& aFunctions)
{
nsAutoPtr<nsCSSValueList> result;
nsCSSValueList** resultTail = getter_Transfers(result);
for (uint32_t i = 0; i < aFunctions.Length(); i++) {
nsRefPtr<nsCSSValue::Array> arr;
switch (aFunctions[i].type()) {
case TransformFunction::TRotationX:
{
float theta = aFunctions[i].get_RotationX().radians();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_rotatex, resultTail);
arr->Item(1).SetFloatValue(theta, eCSSUnit_Radian);
break;
}
case TransformFunction::TRotationY:
{
float theta = aFunctions[i].get_RotationY().radians();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_rotatey, resultTail);
arr->Item(1).SetFloatValue(theta, eCSSUnit_Radian);
break;
}
case TransformFunction::TRotationZ:
{
float theta = aFunctions[i].get_RotationZ().radians();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_rotatez, resultTail);
arr->Item(1).SetFloatValue(theta, eCSSUnit_Radian);
break;
}
case TransformFunction::TRotation:
{
float theta = aFunctions[i].get_Rotation().radians();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_rotate, resultTail);
arr->Item(1).SetFloatValue(theta, eCSSUnit_Radian);
break;
}
case TransformFunction::TRotation3D:
{
float x = aFunctions[i].get_Rotation3D().x();
float y = aFunctions[i].get_Rotation3D().y();
float z = aFunctions[i].get_Rotation3D().z();
float theta = aFunctions[i].get_Rotation3D().radians();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_rotate3d, resultTail);
arr->Item(1).SetFloatValue(x, eCSSUnit_Number);
arr->Item(2).SetFloatValue(y, eCSSUnit_Number);
arr->Item(3).SetFloatValue(z, eCSSUnit_Number);
arr->Item(4).SetFloatValue(theta, eCSSUnit_Radian);
break;
}
case TransformFunction::TScale:
{
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_scale3d, resultTail);
arr->Item(1).SetFloatValue(aFunctions[i].get_Scale().x(), eCSSUnit_Number);
arr->Item(2).SetFloatValue(aFunctions[i].get_Scale().y(), eCSSUnit_Number);
arr->Item(3).SetFloatValue(aFunctions[i].get_Scale().z(), eCSSUnit_Number);
break;
}
case TransformFunction::TTranslation:
{
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_translate3d, resultTail);
arr->Item(1).SetFloatValue(aFunctions[i].get_Translation().x(), eCSSUnit_Pixel);
arr->Item(2).SetFloatValue(aFunctions[i].get_Translation().y(), eCSSUnit_Pixel);
arr->Item(3).SetFloatValue(aFunctions[i].get_Translation().z(), eCSSUnit_Pixel);
break;
}
case TransformFunction::TSkewX:
{
float x = aFunctions[i].get_SkewX().x();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_skewx, resultTail);
arr->Item(1).SetFloatValue(x, eCSSUnit_Number);
break;
}
case TransformFunction::TSkewY:
{
float y = aFunctions[i].get_SkewY().y();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_skewy, resultTail);
arr->Item(1).SetFloatValue(y, eCSSUnit_Number);
break;
}
case TransformFunction::TTransformMatrix:
{
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_matrix3d, resultTail);
const gfx3DMatrix& matrix = aFunctions[i].get_TransformMatrix().value();
arr->Item(1).SetFloatValue(matrix._11, eCSSUnit_Number);
arr->Item(2).SetFloatValue(matrix._12, eCSSUnit_Number);
arr->Item(3).SetFloatValue(matrix._13, eCSSUnit_Number);
arr->Item(4).SetFloatValue(matrix._14, eCSSUnit_Number);
arr->Item(5).SetFloatValue(matrix._21, eCSSUnit_Number);
arr->Item(6).SetFloatValue(matrix._22, eCSSUnit_Number);
arr->Item(7).SetFloatValue(matrix._23, eCSSUnit_Number);
arr->Item(8).SetFloatValue(matrix._24, eCSSUnit_Number);
arr->Item(9).SetFloatValue(matrix._31, eCSSUnit_Number);
arr->Item(10).SetFloatValue(matrix._32, eCSSUnit_Number);
arr->Item(11).SetFloatValue(matrix._33, eCSSUnit_Number);
arr->Item(12).SetFloatValue(matrix._34, eCSSUnit_Number);
arr->Item(13).SetFloatValue(matrix._41, eCSSUnit_Number);
arr->Item(14).SetFloatValue(matrix._42, eCSSUnit_Number);
arr->Item(15).SetFloatValue(matrix._43, eCSSUnit_Number);
arr->Item(16).SetFloatValue(matrix._44, eCSSUnit_Number);
break;
}
case TransformFunction::TPerspective:
{
float perspective = aFunctions[i].get_Perspective().value();
arr = nsStyleAnimation::AppendTransformFunction(eCSSKeyword_perspective, resultTail);
arr->Item(1).SetFloatValue(perspective, eCSSUnit_Pixel);
break;
}
default:
NS_ASSERTION(false, "All functions should be implemented?");
}
}
if (aFunctions.Length() == 0) {
result = new nsCSSValueList();
result->mValue.SetNoneValue();
}
return result.forget();
}
void
Layer::SetAnimations(const AnimationArray& aAnimations)
{
mAnimations = aAnimations;
mAnimationData.Clear();
for (uint32_t i = 0; i < mAnimations.Length(); i++) {
AnimData* data = mAnimationData.AppendElement();
InfallibleTArray<css::ComputedTimingFunction*>& functions = data->mFunctions;
const InfallibleTArray<AnimationSegment>& segments =
mAnimations.ElementAt(i).segments();
for (uint32_t j = 0; j < segments.Length(); j++) {
TimingFunction tf = segments.ElementAt(j).sampleFn();
css::ComputedTimingFunction* ctf = new css::ComputedTimingFunction();
switch (tf.type()) {
case TimingFunction::TCubicBezierFunction: {
CubicBezierFunction cbf = tf.get_CubicBezierFunction();
ctf->Init(nsTimingFunction(cbf.x1(), cbf.y1(), cbf.x2(), cbf.y2()));
break;
}
default: {
NS_ASSERTION(tf.type() == TimingFunction::TStepFunction,
"Function must be bezier or step");
StepFunction sf = tf.get_StepFunction();
nsTimingFunction::Type type = sf.type() == 1 ? nsTimingFunction::StepStart
: nsTimingFunction::StepEnd;
ctf->Init(nsTimingFunction(type, sf.steps()));
break;
}
}
functions.AppendElement(ctf);
}
// Precompute the nsStyleAnimation::Values that we need if this is a transform
// animation.
InfallibleTArray<nsStyleAnimation::Value>& startValues = data->mStartValues;
InfallibleTArray<nsStyleAnimation::Value>& endValues = data->mEndValues;
for (uint32_t j = 0; j < mAnimations[i].segments().Length(); j++) {
const AnimationSegment& segment = mAnimations[i].segments()[j];
nsStyleAnimation::Value* startValue = startValues.AppendElement();
nsStyleAnimation::Value* endValue = endValues.AppendElement();
if (segment.endState().type() == Animatable::TArrayOfTransformFunction) {
const InfallibleTArray<TransformFunction>& startFunctions =
segment.startState().get_ArrayOfTransformFunction();
startValue->SetAndAdoptCSSValueListValue(CreateCSSValueList(startFunctions),
nsStyleAnimation::eUnit_Transform);
const InfallibleTArray<TransformFunction>& endFunctions =
segment.endState().get_ArrayOfTransformFunction();
endValue->SetAndAdoptCSSValueListValue(CreateCSSValueList(endFunctions),
nsStyleAnimation::eUnit_Transform);
} else {
NS_ASSERTION(segment.endState().type() == Animatable::Tfloat,
"Unknown Animatable type");
startValue->SetFloatValue(segment.startState().get_float());
endValue->SetFloatValue(segment.endState().get_float());
}
}
}
Mutated();
}
void
Layer::ApplyPendingUpdatesToSubtree()
{
ApplyPendingUpdatesForThisTransaction();
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
child->ApplyPendingUpdatesToSubtree();
}
}
bool
Layer::CanUseOpaqueSurface()
{
// If the visible content in the layer is opaque, there is no need
// for an alpha channel.
if (GetContentFlags() & CONTENT_OPAQUE)
return true;
// Also, if this layer is the bottommost layer in a container which
// doesn't need an alpha channel, we can use an opaque surface for this
// layer too. Any transparent areas must be covered by something else
// in the container.
ContainerLayer* parent = GetParent();
return parent && parent->GetFirstChild() == this &&
parent->CanUseOpaqueSurface();
}
// NB: eventually these methods will be defined unconditionally, and
// can be moved into Layers.h
const nsIntRect*
Layer::GetEffectiveClipRect()
{
if (ShadowLayer* shadow = AsShadowLayer()) {
return shadow->GetShadowClipRect();
}
return GetClipRect();
}
const nsIntRegion&
Layer::GetEffectiveVisibleRegion()
{
if (ShadowLayer* shadow = AsShadowLayer()) {
return shadow->GetShadowVisibleRegion();
}
return GetVisibleRegion();
}
gfx3DMatrix
Layer::SnapTransformTranslation(const gfx3DMatrix& aTransform,
gfxMatrix* aResidualTransform)
{
if (aResidualTransform) {
*aResidualTransform = gfxMatrix();
}
gfxMatrix matrix2D;
gfx3DMatrix result;
if (mManager->IsSnappingEffectiveTransforms() &&
aTransform.Is2D(&matrix2D) &&
!matrix2D.HasNonTranslation() &&
matrix2D.HasNonIntegerTranslation()) {
gfxPoint snappedTranslation(matrix2D.GetTranslation());
snappedTranslation.Round();
gfxMatrix snappedMatrix = gfxMatrix().Translate(snappedTranslation);
result = gfx3DMatrix::From2D(snappedMatrix);
if (aResidualTransform) {
// set aResidualTransform so that aResidual * snappedMatrix == matrix2D.
// (I.e., appying snappedMatrix after aResidualTransform gives the
// ideal transform.)
*aResidualTransform =
gfxMatrix().Translate(matrix2D.GetTranslation() - snappedTranslation);
}
} else {
result = aTransform;
}
return result;
}
gfx3DMatrix
Layer::SnapTransform(const gfx3DMatrix& aTransform,
const gfxRect& aSnapRect,
gfxMatrix* aResidualTransform)
{
if (aResidualTransform) {
*aResidualTransform = gfxMatrix();
}
gfxMatrix matrix2D;
gfx3DMatrix result;
if (mManager->IsSnappingEffectiveTransforms() &&
aTransform.Is2D(&matrix2D) &&
gfxSize(1.0, 1.0) <= aSnapRect.Size() &&
matrix2D.PreservesAxisAlignedRectangles()) {
gfxPoint transformedTopLeft = matrix2D.Transform(aSnapRect.TopLeft());
transformedTopLeft.Round();
gfxPoint transformedTopRight = matrix2D.Transform(aSnapRect.TopRight());
transformedTopRight.Round();
gfxPoint transformedBottomRight = matrix2D.Transform(aSnapRect.BottomRight());
transformedBottomRight.Round();
gfxMatrix snappedMatrix = gfxUtils::TransformRectToRect(aSnapRect,
transformedTopLeft, transformedTopRight, transformedBottomRight);
result = gfx3DMatrix::From2D(snappedMatrix);
if (aResidualTransform && !snappedMatrix.IsSingular()) {
// set aResidualTransform so that aResidual * snappedMatrix == matrix2D.
// (i.e., appying snappedMatrix after aResidualTransform gives the
// ideal transform.
gfxMatrix snappedMatrixInverse = snappedMatrix;
snappedMatrixInverse.Invert();
*aResidualTransform = matrix2D * snappedMatrixInverse;
}
} else {
result = aTransform;
}
return result;
}
static bool
AncestorLayerMayChangeTransform(Layer* aLayer)
{
for (Layer* l = aLayer; l; l = l->GetParent()) {
if (l->GetContentFlags() & Layer::CONTENT_MAY_CHANGE_TRANSFORM) {
return true;
}
}
return false;
}
bool
Layer::MayResample()
{
gfxMatrix transform2d;
return !GetEffectiveTransform().Is2D(&transform2d) ||
transform2d.HasNonIntegerTranslation() ||
AncestorLayerMayChangeTransform(this);
}
nsIntRect
Layer::CalculateScissorRect(const nsIntRect& aCurrentScissorRect,
const gfxMatrix* aWorldTransform)
{
ContainerLayer* container = GetParent();
NS_ASSERTION(container, "This can't be called on the root!");
// Establish initial clip rect: it's either the one passed in, or
// if the parent has an intermediate surface, it's the extents of that surface.
nsIntRect currentClip;
if (container->UseIntermediateSurface()) {
currentClip.SizeTo(container->GetIntermediateSurfaceRect().Size());
} else {
currentClip = aCurrentScissorRect;
}
const nsIntRect *clipRect = GetEffectiveClipRect();
if (!clipRect)
return currentClip;
if (clipRect->IsEmpty()) {
// We might have a non-translation transform in the container so we can't
// use the code path below.
return nsIntRect(currentClip.TopLeft(), nsIntSize(0, 0));
}
nsIntRect scissor = *clipRect;
if (!container->UseIntermediateSurface()) {
gfxMatrix matrix;
DebugOnly<bool> is2D = container->GetEffectiveTransform().Is2D(&matrix);
// See DefaultComputeEffectiveTransforms below
NS_ASSERTION(is2D && matrix.PreservesAxisAlignedRectangles(),
"Non preserves axis aligned transform with clipped child should have forced intermediate surface");
gfxRect r(scissor.x, scissor.y, scissor.width, scissor.height);
gfxRect trScissor = matrix.TransformBounds(r);
trScissor.Round();
if (!gfxUtils::GfxRectToIntRect(trScissor, &scissor)) {
return nsIntRect(currentClip.TopLeft(), nsIntSize(0, 0));
}
// Find the nearest ancestor with an intermediate surface
do {
container = container->GetParent();
} while (container && !container->UseIntermediateSurface());
}
if (container) {
scissor.MoveBy(-container->GetIntermediateSurfaceRect().TopLeft());
} else if (aWorldTransform) {
gfxRect r(scissor.x, scissor.y, scissor.width, scissor.height);
gfxRect trScissor = aWorldTransform->TransformBounds(r);
trScissor.Round();
if (!gfxUtils::GfxRectToIntRect(trScissor, &scissor))
return nsIntRect(currentClip.TopLeft(), nsIntSize(0, 0));
}
return currentClip.Intersect(scissor);
}
const gfx3DMatrix
Layer::GetTransform()
{
gfx3DMatrix transform = mTransform;
if (ContainerLayer* c = AsContainerLayer()) {
transform.Scale(c->GetPreXScale(), c->GetPreYScale(), 1.0f);
}
transform.ScalePost(mPostXScale, mPostYScale, 1.0f);
return transform;
}
const gfx3DMatrix
Layer::GetLocalTransform()
{
gfx3DMatrix transform;
if (ShadowLayer* shadow = AsShadowLayer())
transform = shadow->GetShadowTransform();
else
transform = mTransform;
if (ContainerLayer* c = AsContainerLayer()) {
transform.Scale(c->GetPreXScale(), c->GetPreYScale(), 1.0f);
}
transform.ScalePost(mPostXScale, mPostYScale, 1.0f);
return transform;
}
void
Layer::ApplyPendingUpdatesForThisTransaction()
{
if (mPendingTransform && *mPendingTransform != mTransform) {
mTransform = *mPendingTransform;
Mutated();
}
mPendingTransform = nullptr;
}
const float
Layer::GetLocalOpacity()
{
if (ShadowLayer* shadow = AsShadowLayer())
return shadow->GetShadowOpacity();
return mOpacity;
}
float
Layer::GetEffectiveOpacity()
{
float opacity = GetLocalOpacity();
for (ContainerLayer* c = GetParent(); c && !c->UseIntermediateSurface();
c = c->GetParent()) {
opacity *= c->GetLocalOpacity();
}
return opacity;
}
void
Layer::ComputeEffectiveTransformForMaskLayer(const gfx3DMatrix& aTransformToSurface)
{
if (mMaskLayer) {
mMaskLayer->mEffectiveTransform = aTransformToSurface;
#ifdef DEBUG
gfxMatrix maskTranslation;
bool maskIs2D = mMaskLayer->GetTransform().CanDraw2D(&maskTranslation);
NS_ASSERTION(maskIs2D, "How did we end up with a 3D transform here?!");
#endif
mMaskLayer->mEffectiveTransform.PreMultiply(mMaskLayer->GetTransform());
}
}
void
ContainerLayer::FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ContainerLayerAttributes(GetFrameMetrics(), mPreXScale, mPreYScale,
mInheritedXScale, mInheritedYScale);
}
bool
ContainerLayer::HasMultipleChildren()
{
uint32_t count = 0;
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
const nsIntRect *clipRect = child->GetEffectiveClipRect();
if (clipRect && clipRect->IsEmpty())
continue;
if (child->GetVisibleRegion().IsEmpty())
continue;
++count;
if (count > 1)
return true;
}
return false;
}
void
ContainerLayer::SortChildrenBy3DZOrder(nsTArray<Layer*>& aArray)
{
nsAutoTArray<Layer*, 10> toSort;
for (Layer* l = GetFirstChild(); l; l = l->GetNextSibling()) {
ContainerLayer* container = l->AsContainerLayer();
if (container && container->GetContentFlags() & CONTENT_PRESERVE_3D) {
toSort.AppendElement(l);
} else {
if (toSort.Length() > 0) {
SortLayersBy3DZOrder(toSort);
aArray.MoveElementsFrom(toSort);
}
aArray.AppendElement(l);
}
}
if (toSort.Length() > 0) {
SortLayersBy3DZOrder(toSort);
aArray.MoveElementsFrom(toSort);
}
}
void
ContainerLayer::DefaultComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
gfxMatrix residual;
gfx3DMatrix idealTransform = GetLocalTransform()*aTransformToSurface;
idealTransform.ProjectTo2D();
mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
bool useIntermediateSurface;
if (GetMaskLayer()) {
useIntermediateSurface = true;
#ifdef MOZ_DUMP_PAINTING
} else if (gfxUtils::sDumpPainting) {
useIntermediateSurface = true;
#endif
} else {
float opacity = GetEffectiveOpacity();
if (opacity != 1.0f && HasMultipleChildren()) {
useIntermediateSurface = true;
} else {
useIntermediateSurface = false;
gfxMatrix contTransform;
if (!mEffectiveTransform.Is2D(&contTransform) ||
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
!contTransform.PreservesAxisAlignedRectangles()) {
#else
contTransform.HasNonIntegerTranslation()) {
#endif
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
const nsIntRect *clipRect = child->GetEffectiveClipRect();
/* We can't (easily) forward our transform to children with a non-empty clip
* rect since it would need to be adjusted for the transform. See
* the calculations performed by CalculateScissorRect above.
* Nor for a child with a mask layer.
*/
if ((clipRect && !clipRect->IsEmpty() && !child->GetVisibleRegion().IsEmpty()) ||
child->GetMaskLayer()) {
useIntermediateSurface = true;
break;
}
}
}
}
}
mUseIntermediateSurface = useIntermediateSurface;
if (useIntermediateSurface) {
ComputeEffectiveTransformsForChildren(gfx3DMatrix::From2D(residual));
} else {
ComputeEffectiveTransformsForChildren(idealTransform);
}
if (idealTransform.CanDraw2D()) {
ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
} else {
ComputeEffectiveTransformForMaskLayer(gfx3DMatrix());
}
}
void
ContainerLayer::ComputeEffectiveTransformsForChildren(const gfx3DMatrix& aTransformToSurface)
{
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
l->ComputeEffectiveTransforms(aTransformToSurface);
}
}
void
ContainerLayer::DidRemoveChild(Layer* aLayer)
{
ThebesLayer* tl = aLayer->AsThebesLayer();
if (tl && tl->UsedForReadback()) {
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
if (l->GetType() == TYPE_READBACK) {
static_cast<ReadbackLayer*>(l)->NotifyThebesLayerRemoved(tl);
}
}
}
if (aLayer->GetType() == TYPE_READBACK) {
static_cast<ReadbackLayer*>(aLayer)->NotifyRemoved();
}
}
void
ContainerLayer::DidInsertChild(Layer* aLayer)
{
if (aLayer->GetType() == TYPE_READBACK) {
mMayHaveReadbackChild = true;
}
}
void
RefLayer::FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = RefLayerAttributes(GetReferentId());
}
void
LayerManager::StartFrameTimeRecording()
{
mLastFrameTime = TimeStamp::Now();
mPaintStartTime = mLastFrameTime;
}
void
LayerManager::SetPaintStartTime(TimeStamp& aTime)
{
if (!mLastFrameTime.IsNull()) {
mPaintStartTime = aTime;
}
}
void
LayerManager::PostPresent()
{
if (!mLastFrameTime.IsNull()) {
TimeStamp now = TimeStamp::Now();
mFrameIntervals.AppendElement((now - mLastFrameTime).ToMilliseconds());
mPaintTimes.AppendElement((now - mPaintStartTime).ToMilliseconds());
mLastFrameTime = now;
}
if (!mTabSwitchStart.IsNull()) {
Telemetry::Accumulate(Telemetry::FX_TAB_SWITCH_TOTAL_MS,
uint32_t((TimeStamp::Now() - mTabSwitchStart).ToMilliseconds()));
mTabSwitchStart = TimeStamp();
}
}
void
LayerManager::StopFrameTimeRecording(nsTArray<float>& aFrameIntervals, nsTArray<float>& aPaintTimes)
{
mLastFrameTime = TimeStamp();
aFrameIntervals.SwapElements(mFrameIntervals);
aPaintTimes.SwapElements(mPaintTimes);
mFrameIntervals.Clear();
mPaintTimes.Clear();
}
void
LayerManager::BeginTabSwitch()
{
mTabSwitchStart = TimeStamp::Now();
}
#ifdef MOZ_LAYERS_HAVE_LOG
static nsACString& PrintInfo(nsACString& aTo, ShadowLayer* aShadowLayer);
#ifdef MOZ_DUMP_PAINTING
template <typename T>
void WriteSnapshotLinkToDumpFile(T* aObj, FILE* aFile)
{
nsCString string(aObj->Name());
string.Append("-");
string.AppendInt((uint64_t)aObj);
fprintf(aFile, "href=\"javascript:ViewImage('%s')\"", string.BeginReading());
}
template <typename T>
void WriteSnapshotToDumpFile_internal(T* aObj, gfxASurface* aSurf)
{
nsCString string(aObj->Name());
string.Append("-");
string.AppendInt((uint64_t)aObj);
if (gfxUtils::sDumpPaintFile)
fprintf(gfxUtils::sDumpPaintFile, "array[\"%s\"]=\"", string.BeginReading());
aSurf->DumpAsDataURL(gfxUtils::sDumpPaintFile);
if (gfxUtils::sDumpPaintFile)
fprintf(gfxUtils::sDumpPaintFile, "\";");
}
void WriteSnapshotToDumpFile(Layer* aLayer, gfxASurface* aSurf)
{
WriteSnapshotToDumpFile_internal(aLayer, aSurf);
}
void WriteSnapshotToDumpFile(LayerManager* aManager, gfxASurface* aSurf)
{
WriteSnapshotToDumpFile_internal(aManager, aSurf);
}
#endif
void
Layer::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml)
{
if (aDumpHtml) {
fprintf(aFile, "<li><a id=\"%p\" ", this);
#ifdef MOZ_DUMP_PAINTING
if (GetType() == TYPE_CONTAINER || GetType() == TYPE_THEBES) {
WriteSnapshotLinkToDumpFile(this, aFile);
}
#endif
fprintf(aFile, ">");
}
DumpSelf(aFile, aPrefix);
if (aDumpHtml) {
fprintf(aFile, "</a>");
}
if (Layer* mask = GetMaskLayer()) {
nsAutoCString pfx(aPrefix);
pfx += " Mask layer: ";
mask->Dump(aFile, pfx.get());
}
if (Layer* kid = GetFirstChild()) {
nsAutoCString pfx(aPrefix);
pfx += " ";
if (aDumpHtml) {
fprintf(aFile, "<ul>");
}
kid->Dump(aFile, pfx.get());
if (aDumpHtml) {
fprintf(aFile, "</ul>");
}
}
if (aDumpHtml) {
fprintf(aFile, "</li>");
}
if (Layer* next = GetNextSibling())
next->Dump(aFile, aPrefix, aDumpHtml);
}
void
Layer::DumpSelf(FILE* aFile, const char* aPrefix)
{
nsAutoCString str;
PrintInfo(str, aPrefix);
fprintf(FILEOrDefault(aFile), "%s\n", str.get());
}
void
Layer::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
if (Layer* kid = GetFirstChild()) {
nsAutoCString pfx(aPrefix);
pfx += " ";
kid->Log(pfx.get());
}
if (Layer* next = GetNextSibling())
next->Log(aPrefix);
}
void
Layer::LogSelf(const char* aPrefix)
{
if (!IsLogEnabled())
return;
nsAutoCString str;
PrintInfo(str, aPrefix);
MOZ_LAYERS_LOG(("%s", str.get()));
}
nsACString&
Layer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
aTo += nsPrintfCString("%s%s (0x%p)", mManager->Name(), Name(), this);
::PrintInfo(aTo, AsShadowLayer());
if (mUseClipRect) {
AppendToString(aTo, mClipRect, " [clip=", "]");
}
if (1.0 != mPostXScale || 1.0 != mPostYScale) {
aTo.AppendPrintf(" [postScale=%g, %g]", mPostXScale, mPostYScale);
}
if (!mTransform.IsIdentity()) {
AppendToString(aTo, mTransform, " [transform=", "]");
}
if (!mVisibleRegion.IsEmpty()) {
AppendToString(aTo, mVisibleRegion, " [visible=", "]");
} else {
aTo += " [not visible]";
}
if (1.0 != mOpacity) {
aTo.AppendPrintf(" [opacity=%g]", mOpacity);
}
if (GetContentFlags() & CONTENT_OPAQUE) {
aTo += " [opaqueContent]";
}
if (GetContentFlags() & CONTENT_COMPONENT_ALPHA) {
aTo += " [componentAlpha]";
}
if (GetIsFixedPosition()) {
aTo += " [isFixedPosition]";
}
return aTo;
}
nsACString&
ThebesLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (!mValidRegion.IsEmpty()) {
AppendToString(aTo, mValidRegion, " [valid=", "]");
}
return aTo;
}
nsACString&
ContainerLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (!mFrameMetrics.IsDefault()) {
AppendToString(aTo, mFrameMetrics, " [metrics=", "]");
}
if (UseIntermediateSurface()) {
aTo += " [usesTmpSurf]";
}
if (1.0 != mPreXScale || 1.0 != mPreYScale) {
aTo.AppendPrintf(" [preScale=%g, %g]", mPreXScale, mPreYScale);
}
return aTo;
}
nsACString&
ColorLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
AppendToString(aTo, mColor, " [color=", "]");
return aTo;
}
nsACString&
CanvasLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (mFilter != gfxPattern::FILTER_GOOD) {
AppendToString(aTo, mFilter, " [filter=", "]");
}
return aTo;
}
nsACString&
ImageLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (mFilter != gfxPattern::FILTER_GOOD) {
AppendToString(aTo, mFilter, " [filter=", "]");
}
return aTo;
}
nsACString&
RefLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
ContainerLayer::PrintInfo(aTo, aPrefix);
if (0 != mId) {
AppendToString(aTo, mId, " [id=", "]");
}
return aTo;
}
nsACString&
ReadbackLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
AppendToString(aTo, mSize, " [size=", "]");
if (mBackgroundLayer) {
AppendToString(aTo, mBackgroundLayer, " [backgroundLayer=", "]");
AppendToString(aTo, mBackgroundLayerOffset, " [backgroundOffset=", "]");
} else if (mBackgroundColor.a == 1.0) {
AppendToString(aTo, mBackgroundColor, " [backgroundColor=", "]");
} else {
aTo += " [nobackground]";
}
return aTo;
}
//--------------------------------------------------
// LayerManager
void
LayerManager::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml)
{
FILE* file = FILEOrDefault(aFile);
#ifdef MOZ_DUMP_PAINTING
if (aDumpHtml) {
fprintf(file, "<ul><li><a ");
WriteSnapshotLinkToDumpFile(this, file);
fprintf(file, ">");
}
#endif
DumpSelf(file, aPrefix);
#ifdef MOZ_DUMP_PAINTING
if (aDumpHtml) {
fprintf(file, "</a>");
}
#endif
nsAutoCString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
fprintf(file, "%s(null)", pfx.get());
if (aDumpHtml) {
fprintf(file, "</li></ul>");
}
return;
}
if (aDumpHtml) {
fprintf(file, "<ul>");
}
GetRoot()->Dump(file, pfx.get(), aDumpHtml);
if (aDumpHtml) {
fprintf(file, "</ul></li></ul>");
}
fputc('\n', file);
}
void
LayerManager::DumpSelf(FILE* aFile, const char* aPrefix)
{
nsAutoCString str;
PrintInfo(str, aPrefix);
fprintf(FILEOrDefault(aFile), "%s\n", str.get());
}
void
LayerManager::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
nsAutoCString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
MOZ_LAYERS_LOG(("%s(null)", pfx.get()));
return;
}
GetRoot()->Log(pfx.get());
}
void
LayerManager::LogSelf(const char* aPrefix)
{
nsAutoCString str;
PrintInfo(str, aPrefix);
MOZ_LAYERS_LOG(("%s", str.get()));
}
nsACString&
LayerManager::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
return aTo += nsPrintfCString("%sLayerManager (0x%p)", Name(), this);
}
/*static*/ void
LayerManager::InitLog()
{
if (!sLog)
sLog = PR_NewLogModule("Layers");
}
/*static*/ bool
LayerManager::IsLogEnabled()
{
NS_ABORT_IF_FALSE(!!sLog,
"layer manager must be created before logging is allowed");
return PR_LOG_TEST(sLog, PR_LOG_DEBUG);
}
static nsACString&
PrintInfo(nsACString& aTo, ShadowLayer* aShadowLayer)
{
if (!aShadowLayer) {
return aTo;
}
if (const nsIntRect* clipRect = aShadowLayer->GetShadowClipRect()) {
AppendToString(aTo, *clipRect, " [shadow-clip=", "]");
}
if (!aShadowLayer->GetShadowTransform().IsIdentity()) {
AppendToString(aTo, aShadowLayer->GetShadowTransform(), " [shadow-transform=", "]");
}
if (!aShadowLayer->GetShadowVisibleRegion().IsEmpty()) {
AppendToString(aTo, aShadowLayer->GetShadowVisibleRegion(), " [shadow-visible=", "]");
}
return aTo;
}
#else // !MOZ_LAYERS_HAVE_LOG
void Layer::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml) {}
void Layer::DumpSelf(FILE* aFile, const char* aPrefix) {}
void Layer::Log(const char* aPrefix) {}
void Layer::LogSelf(const char* aPrefix) {}
nsACString&
Layer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ThebesLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ContainerLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ColorLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
CanvasLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ImageLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
RefLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ReadbackLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
void LayerManager::Dump(FILE* aFile, const char* aPrefix, bool aDumpHtml) {}
void LayerManager::DumpSelf(FILE* aFile, const char* aPrefix) {}
void LayerManager::Log(const char* aPrefix) {}
void LayerManager::LogSelf(const char* aPrefix) {}
nsACString&
LayerManager::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
/*static*/ void LayerManager::InitLog() {}
/*static*/ bool LayerManager::IsLogEnabled() { return false; }
#endif // MOZ_LAYERS_HAVE_LOG
PRLogModuleInfo* LayerManager::sLog;
} // namespace layers
} // namespace mozilla
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