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layer.cc
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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/layer.h"
#include <cmath>
#include <memory>
#include <utility>
#include "base/auto_reset.h"
#include "base/check_op.h"
#include "base/command_line.h"
#include "base/containers/contains.h"
#include "base/debug/dump_without_crashing.h"
#include "base/functional/bind.h"
#include "base/json/json_writer.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/ranges/algorithm.h"
#include "base/trace_event/trace_event.h"
#include "cc/layers/mirror_layer.h"
#include "cc/layers/nine_patch_layer.h"
#include "cc/layers/picture_layer.h"
#include "cc/layers/solid_color_layer.h"
#include "cc/layers/surface_layer.h"
#include "cc/layers/texture_layer.h"
#include "cc/paint/filter_operation.h"
#include "cc/paint/filter_operations.h"
#include "cc/trees/layer_tree_settings.h"
#include "components/viz/common/frame_sinks/copy_output_request.h"
#include "components/viz/common/resources/transferable_resource.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/layer_delegate.h"
#include "ui/compositor/layer_observer.h"
#include "ui/compositor/paint_context.h"
#include "ui/gfx/animation/animation.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/dip_util.h"
#include "ui/gfx/geometry/point3_f.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/rounded_corners_f.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/gfx/image/image_skia_rep.h"
#include "ui/gfx/interpolated_transform.h"
namespace ui {
namespace {
// TODO(https://crbug.com/1242749): temporary while tracking down crash.
// Minimum interval between no mutation debug dumps.
constexpr base::TimeDelta kMinNoMutationDumpInterval = base::Days(1);
const Layer* GetRoot(const Layer* layer) {
// Parent walk cannot be done on a layer that is being used as a mask. Get the
// layer to which this layer is a mask of.
if (layer->layer_mask_back_link())
layer = layer->layer_mask_back_link();
while (layer->parent())
layer = layer->parent();
return layer;
}
#if DCHECK_IS_ON()
void CheckSnapped(float snapped_position) {
// The acceptable error epsilon should be small enough to detect visible
// artifacts as well as large enough to not cause false crashes when an
// uncommon device scale factor is applied.
const float kEplison = 0.003f;
float diff = std::abs(snapped_position - std::round(snapped_position));
DCHECK_LT(diff, kEplison);
}
#endif
} // namespace
class Layer::LayerMirror : public LayerDelegate, LayerObserver {
public:
LayerMirror(Layer* source, Layer* dest)
: source_(source), dest_(dest) {
dest->AddObserver(this);
dest->set_delegate(this);
}
LayerMirror(const LayerMirror&) = delete;
LayerMirror& operator=(const LayerMirror&) = delete;
~LayerMirror() override {
dest_->RemoveObserver(this);
dest_->set_delegate(nullptr);
}
Layer* dest() { return dest_; }
// LayerDelegate:
void OnPaintLayer(const PaintContext& context) override {
if (auto* delegate = source_->delegate())
delegate->OnPaintLayer(context);
}
void OnDeviceScaleFactorChanged(float old_device_scale_factor,
float new_device_scale_factor) override {}
// LayerObserver:
void LayerDestroyed(Layer* layer) override {
DCHECK_EQ(dest_, layer);
source_->OnMirrorDestroyed(this);
}
private:
const raw_ptr<Layer> source_;
const raw_ptr<Layer> dest_;
};
// Manages the subpixel offset data for a given set of parameters (device
// scale factor and DIP offset from parent layer).
class Layer::SubpixelPositionOffsetCache {
public:
SubpixelPositionOffsetCache() = default;
SubpixelPositionOffsetCache(const SubpixelPositionOffsetCache&) = delete;
SubpixelPositionOffsetCache& operator=(const SubpixelPositionOffsetCache&) =
delete;
~SubpixelPositionOffsetCache() = default;
gfx::Vector2dF GetSubpixelOffset(float device_scale_factor,
const gfx::Point& origin,
const gfx::Transform& tm) const {
if (has_explicit_subpixel_offset_)
return offset_;
if (device_scale_factor <= 0)
return gfx::Vector2dF();
// Compute the effective offset (position + transform) from the parent.
gfx::PointF offset_from_parent(origin);
if (!tm.IsIdentity() && tm.Preserves2dAxisAlignment())
offset_from_parent += tm.To2dTranslation();
if (device_scale_factor == device_scale_factor_ &&
offset_from_parent == offset_from_parent_) {
return offset_;
}
// Compute subpixel offset for the given parameters.
gfx::PointF scaled_offset_from_parent(offset_from_parent);
scaled_offset_from_parent.Scale(device_scale_factor, device_scale_factor);
gfx::PointF snapped_offset_from_parent(
gfx::ToRoundedPoint(scaled_offset_from_parent));
gfx::Vector2dF offset =
snapped_offset_from_parent - scaled_offset_from_parent;
offset.InvScale(device_scale_factor);
// Store key and value information for the cache.
offset_ = offset;
device_scale_factor_ = device_scale_factor;
offset_from_parent_ = offset_from_parent;
#if DCHECK_IS_ON()
const gfx::PointF snapped_position = offset_from_parent_ + offset_;
CheckSnapped(snapped_position.x() * device_scale_factor);
CheckSnapped(snapped_position.y() * device_scale_factor);
#endif
return offset_;
}
void SetExplicitSubpixelPositionOffset(const gfx::Vector2dF& offset) {
has_explicit_subpixel_offset_ = true;
offset_ = offset;
}
bool has_explicit_subpixel_offset() const {
return has_explicit_subpixel_offset_;
}
private:
// The subpixel offset value.
mutable gfx::Vector2dF offset_;
// The device scale factor for which the |offset_| was computed.
mutable float device_scale_factor_ = 1.f;
// The offset of the layer from its parent for which |offset_| was computed.
mutable gfx::PointF offset_from_parent_;
// True if the subpixel offset was computed and set by an external source.
bool has_explicit_subpixel_offset_ = false;
};
Layer::Layer(LayerType type)
: type_(type),
compositor_(nullptr),
parent_(nullptr),
subpixel_position_offset_(
std::make_unique<SubpixelPositionOffsetCache>()),
visible_(true),
fills_bounds_opaquely_(true),
fills_bounds_completely_(false),
background_blur_sigma_(0.0f),
layer_saturation_(0.0f),
layer_brightness_(0.0f),
layer_grayscale_(0.0f),
layer_inverted_(false),
layer_blur_sigma_(0.0f),
layer_sepia_(0.0f),
layer_hue_rotation_(0.0f),
layer_mask_(nullptr),
layer_mask_back_link_(nullptr),
zoom_(1),
zoom_inset_(0),
delegate_(nullptr),
owner_(nullptr),
cc_layer_(nullptr),
device_scale_factor_(1.0f),
cache_render_surface_requests_(0),
deferred_paint_requests_(0),
backdrop_filter_quality_(1.0f),
trilinear_filtering_request_(0) {
CreateCcLayer();
}
Layer::~Layer() {
CHECK(!in_send_damaged_rects_);
CHECK(!sending_damaged_rects_for_descendants_);
for (auto& observer : observer_list_)
observer.LayerDestroyed(this);
// Destroying the animator may cause observers to use the layer. Destroy the
// animator first so that the layer is still around.
SetAnimator(nullptr);
if (compositor_)
compositor_->SetRootLayer(nullptr);
if (parent_)
parent_->Remove(this);
if (layer_mask_)
SetMaskLayer(nullptr);
if (layer_mask_back_link_)
layer_mask_back_link_->SetMaskLayer(nullptr);
for (auto* child : children_)
child->parent_ = nullptr;
if (content_layer_)
content_layer_->ClearClient();
cc_layer_->RemoveFromParent();
if (transfer_release_callback_)
std::move(transfer_release_callback_).Run(gpu::SyncToken(), false);
ResetSubtreeReflectedLayer();
}
std::unique_ptr<Layer> Layer::Clone() const {
auto clone = std::make_unique<Layer>(type_);
// Background filters.
clone->SetBackgroundBlur(background_blur_sigma_);
clone->SetBackgroundZoom(zoom_, zoom_inset_);
clone->SetBackgroundOffset(background_offset_);
// Filters.
clone->SetLayerSaturation(layer_saturation_);
clone->SetLayerBrightness(GetTargetBrightness());
clone->SetLayerGrayscale(GetTargetGrayscale());
clone->SetLayerSepia(layer_sepia_);
clone->SetLayerHueRotation(layer_hue_rotation_);
if (layer_custom_color_matrix_) {
clone->SetLayerCustomColorMatrix(*layer_custom_color_matrix_);
}
clone->SetLayerInverted(layer_inverted_);
clone->SetLayerBlur(layer_blur_sigma_);
if (alpha_shape_)
clone->SetAlphaShape(std::make_unique<ShapeRects>(*alpha_shape_));
// cc::Layer state.
// TODO(crbug/1308932): Remove toSkColor and make all SkColor4f.
if (surface_layer_) {
clone->SetShowSurface(surface_layer_->surface_id(), frame_size_in_dip_,
surface_layer_->background_color().toSkColor(),
surface_layer_->deadline_in_frames()
? cc::DeadlinePolicy::UseSpecifiedDeadline(
*surface_layer_->deadline_in_frames())
: cc::DeadlinePolicy::UseDefaultDeadline(),
surface_layer_->stretch_content_to_fill_bounds());
if (surface_layer_->oldest_acceptable_fallback())
clone->SetOldestAcceptableFallback(
*surface_layer_->oldest_acceptable_fallback());
} else if (type_ == LAYER_SOLID_COLOR) {
clone->SetColor(GetTargetColor());
}
clone->SetTransform(GetTargetTransform());
clone->SetBounds(bounds_);
if (subpixel_position_offset_->has_explicit_subpixel_offset())
clone->SetSubpixelPositionOffset(GetSubpixelOffset());
clone->SetMasksToBounds(GetMasksToBounds());
clone->SetOpacity(GetTargetOpacity());
clone->SetVisible(GetTargetVisibility());
clone->SetClipRect(GetTargetClipRect());
clone->SetAcceptEvents(accept_events());
clone->SetFillsBoundsOpaquely(fills_bounds_opaquely_);
clone->SetFillsBoundsCompletely(fills_bounds_completely_);
clone->SetRoundedCornerRadius(rounded_corner_radii());
clone->SetGradientMask(gradient_mask());
clone->SetIsFastRoundedCorner(is_fast_rounded_corner());
clone->SetName(name_);
// the |damaged_region_| will be sent to cc later in SendDamagedRects().
clone->damaged_region_ = damaged_region_;
return clone;
}
std::unique_ptr<Layer> Layer::Mirror() {
auto mirror = Clone();
mirrors_.emplace_back(std::make_unique<LayerMirror>(this, mirror.get()));
if (!transfer_resource_.mailbox_holder.mailbox.IsZero()) {
// Send an empty release callback because we don't want the resource to be
// freed up until the original layer releases it.
mirror->SetTransferableResource(
transfer_resource_,
base::BindOnce([](const gpu::SyncToken& sync_token, bool is_lost) {}),
frame_size_in_dip_);
}
return mirror;
}
void Layer::SetShowReflectedLayerSubtree(Layer* subtree_reflected_layer) {
DCHECK(subtree_reflected_layer);
DCHECK_EQ(type_, LAYER_SOLID_COLOR);
if (subtree_reflected_layer_ == subtree_reflected_layer)
return;
scoped_refptr<cc::MirrorLayer> new_layer =
cc::MirrorLayer::Create(subtree_reflected_layer->cc_layer_.get());
if (!SwitchToLayer(new_layer))
return;
mirror_layer_ = std::move(new_layer);
subtree_reflected_layer_ = subtree_reflected_layer;
auto insert_pair =
subtree_reflected_layer_->subtree_reflecting_layers_.insert(this);
DCHECK(insert_pair.second);
MatchLayerSize(subtree_reflected_layer_);
RecomputeDrawsContentAndUVRect();
}
const Compositor* Layer::GetCompositor() const {
return GetRoot(this)->compositor_;
}
float Layer::opacity() const {
return cc_layer_->opacity();
}
void Layer::SetCompositor(Compositor* compositor,
scoped_refptr<cc::Layer> root_layer) {
// This function must only be called to set the compositor on the root ui
// layer.
DCHECK(compositor);
DCHECK(!compositor_);
DCHECK(compositor->root_layer() == this);
DCHECK(!parent_);
compositor_ = compositor;
OnDeviceScaleFactorChanged(compositor->device_scale_factor());
root_layer->AddChild(cc_layer_.get());
SetCompositorForAnimatorsInTree(compositor);
}
void Layer::ResetCompositor() {
DCHECK(!parent_);
if (compositor_) {
ResetCompositorForAnimatorsInTree(compositor_);
compositor_ = nullptr;
}
}
void Layer::AddObserver(LayerObserver* observer) {
observer_list_.AddObserver(observer);
}
void Layer::RemoveObserver(LayerObserver* observer) {
observer_list_.RemoveObserver(observer);
}
void Layer::Add(Layer* child) {
// TODO(https://crbug.com/1242749): temporary while tracking down crash.
if (no_mutation_) {
base::debug::DumpWithoutCrashing(FROM_HERE, kMinNoMutationDumpInterval);
}
DCHECK(!child->compositor_);
if (child->parent_)
child->parent_->Remove(child);
child->parent_ = this;
children_.push_back(child);
cc_layer_->AddChild(child->cc_layer_.get());
child->OnDeviceScaleFactorChanged(device_scale_factor_);
Compositor* compositor = GetCompositor();
if (compositor && compositor->animations_are_enabled())
child->SetCompositorForAnimatorsInTree(compositor);
}
void Layer::Remove(Layer* child) {
base::WeakPtr<Layer> weak_this = weak_ptr_factory_.GetWeakPtr();
base::WeakPtr<Layer> weak_child = child->weak_ptr_factory_.GetWeakPtr();
// Current bounds are used to calculate offsets when layers are reparented.
// Stop (and complete) an ongoing animation to update the bounds immediately.
LayerAnimator* child_animator = child->animator_.get();
if (child_animator)
child_animator->StopAnimatingProperty(LayerAnimationElement::BOUNDS);
// Do not proceed if |this| or |child| is released by an animation observer
// of |child|'s bounds animation.
if (!weak_this || !weak_child)
return;
Compositor* compositor = GetCompositor();
if (compositor && compositor->animations_are_enabled())
child->ResetCompositorForAnimatorsInTree(compositor);
auto i = base::ranges::find(children_, child);
DCHECK(i != children_.end());
children_.erase(i);
child->parent_ = nullptr;
child->cc_layer_->RemoveFromParent();
}
void Layer::StackAtTop(Layer* child) {
if (children_.size() <= 1 || child == children_.back())
return; // Already in front.
StackAbove(child, children_.back());
}
void Layer::StackAbove(Layer* child, Layer* other) {
StackRelativeTo(child, other, true);
}
void Layer::StackAtBottom(Layer* child) {
if (children_.size() <= 1 || child == children_.front())
return; // Already on bottom.
StackBelow(child, children_.front());
}
void Layer::StackBelow(Layer* child, Layer* other) {
StackRelativeTo(child, other, false);
}
bool Layer::Contains(const Layer* other) const {
for (const Layer* parent = other; parent; parent = parent->parent()) {
if (parent == this)
return true;
}
return false;
}
void Layer::SetAnimator(scoped_refptr<LayerAnimator> animator) {
Compositor* compositor = GetCompositor();
if (animator_) {
if (compositor && compositor->animations_are_enabled() &&
!layer_mask_back_link())
animator_->DetachLayerAndTimeline(compositor);
animator_->SetDelegate(nullptr);
}
animator_ = std::move(animator);
if (animator_) {
animator_->SetDelegate(this);
if (compositor && compositor->animations_are_enabled() &&
!layer_mask_back_link())
animator_->AttachLayerAndTimeline(compositor);
}
}
LayerAnimator* Layer::GetAnimator() {
if (!animator_)
SetAnimator(LayerAnimator::CreateDefaultAnimator());
return animator_.get();
}
void Layer::SetSubtreeCaptureId(viz::SubtreeCaptureId subtree_id) {
cc_layer_->SetSubtreeCaptureId(subtree_id);
}
viz::SubtreeCaptureId Layer::GetSubtreeCaptureId() const {
return cc_layer_->subtree_capture_id();
}
void Layer::SetTransform(const gfx::Transform& transform) {
GetAnimator()->SetTransform(transform);
}
gfx::Transform Layer::GetTargetTransform() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::TRANSFORM)) {
return animator_->GetTargetTransform();
}
return transform();
}
void Layer::SetBounds(const gfx::Rect& bounds) {
GetAnimator()->SetBounds(bounds);
}
void Layer::SetSubpixelPositionOffset(const gfx::Vector2dF& offset) {
subpixel_position_offset_->SetExplicitSubpixelPositionOffset(offset);
RecomputePosition();
}
const gfx::Vector2dF Layer::GetSubpixelOffset() const {
return subpixel_position_offset_->GetSubpixelOffset(
device_scale_factor_, GetTargetBounds().origin(), GetTargetTransform());
}
gfx::Rect Layer::GetTargetBounds() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::BOUNDS)) {
return animator_->GetTargetBounds();
}
return bounds_;
}
void Layer::SetMasksToBounds(bool masks_to_bounds) {
cc_layer_->SetMasksToBounds(masks_to_bounds);
}
bool Layer::GetMasksToBounds() const {
return cc_layer_->masks_to_bounds();
}
gfx::Rect Layer::GetTargetClipRect() const {
if (animator_ &&
animator_->IsAnimatingProperty(LayerAnimationElement::CLIP)) {
return animator_->GetTargetClipRect();
}
return clip_rect();
}
void Layer::SetClipRect(const gfx::Rect& clip_rect) {
GetAnimator()->SetClipRect(clip_rect);
}
void Layer::SetOpacity(float opacity) {
GetAnimator()->SetOpacity(opacity);
}
float Layer::GetCombinedOpacity() const {
float opacity = this->opacity();
Layer* current = this->parent_;
while (current) {
opacity *= current->opacity();
current = current->parent_;
}
return opacity;
}
void Layer::SetBackgroundBlur(float blur_sigma) {
background_blur_sigma_ = blur_sigma;
SetLayerBackgroundFilters();
}
void Layer::SetLayerBlur(float blur_sigma) {
layer_blur_sigma_ = blur_sigma;
SetLayerFilters();
}
void Layer::SetLayerSaturation(float saturation) {
layer_saturation_ = saturation;
SetLayerFilters();
}
void Layer::SetLayerBrightness(float brightness) {
GetAnimator()->SetBrightness(brightness);
}
float Layer::GetTargetBrightness() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::BRIGHTNESS)) {
return animator_->GetTargetBrightness();
}
return layer_brightness();
}
void Layer::SetLayerGrayscale(float grayscale) {
GetAnimator()->SetGrayscale(grayscale);
}
float Layer::GetTargetGrayscale() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::GRAYSCALE)) {
return animator_->GetTargetGrayscale();
}
return layer_grayscale();
}
void Layer::SetLayerSepia(float amount) {
layer_sepia_ = amount;
SetLayerFilters();
}
void Layer::SetLayerHueRotation(float amount) {
layer_hue_rotation_ = amount;
SetLayerFilters();
}
void Layer::SetLayerCustomColorMatrix(
const cc::FilterOperation::Matrix& matrix) {
layer_custom_color_matrix_ =
std::make_unique<cc::FilterOperation::Matrix>(matrix);
SetLayerFilters();
}
const cc::FilterOperation::Matrix* Layer::GetLayerCustomColorMatrix() const {
return layer_custom_color_matrix_.get();
}
bool Layer::LayerHasCustomColorMatrix() const {
return layer_custom_color_matrix_.get() != nullptr;
}
void Layer::ClearLayerCustomColorMatrix() {
layer_custom_color_matrix_.reset();
SetLayerFilters();
}
void Layer::SetLayerInverted(bool inverted) {
layer_inverted_ = inverted;
SetLayerFilters();
}
void Layer::SetMaskLayer(Layer* layer_mask) {
if (layer_mask_ == layer_mask)
return;
// The provided mask should not have a layer mask itself.
DCHECK(!layer_mask ||
(!layer_mask->layer_mask_layer() && layer_mask->children().empty() &&
!layer_mask->layer_mask_back_link_));
DCHECK(!layer_mask_back_link_);
DCHECK(!layer_mask || layer_mask->type_ == LAYER_TEXTURED);
// Masks must be backed by a PictureLayer.
DCHECK(!layer_mask || layer_mask->content_layer_);
// We need to de-reference the currently linked object so that no problem
// arises if the mask layer gets deleted before this object.
if (layer_mask_) {
// Changing the layer mask while it's in the middle of painting is likely
// to lead to very unusual behavior, and not supported.
CHECK(!layer_mask_->in_send_damaged_rects_);
layer_mask_->layer_mask_back_link_ = nullptr;
}
layer_mask_ = layer_mask;
cc_layer_->SetMaskLayer(layer_mask ? layer_mask->content_layer_.get()
: nullptr);
// We need to reference the linked object so that it can properly break the
// link to us when it gets deleted.
if (layer_mask) {
// Changing the layer mask while it's in the middle of painting is likely
// to lead to very unusual behavior, and not supported.
CHECK(!layer_mask->in_send_damaged_rects_);
// TODO(https://crbug.com/1242749): temporary while tracking down crash.
// A `layer_mask` of this would lead to recursion.
CHECK(layer_mask != this);
if (no_mutation_) {
base::debug::DumpWithoutCrashing(FROM_HERE, kMinNoMutationDumpInterval);
}
layer_mask->layer_mask_back_link_ = this;
layer_mask->OnDeviceScaleFactorChanged(device_scale_factor_);
}
}
void Layer::SetBackgroundZoom(float zoom, int inset) {
zoom_ = zoom;
zoom_inset_ = inset;
SetLayerBackgroundFilters();
}
void Layer::SetBackgroundOffset(const gfx::Point& background_offset) {
background_offset_ = background_offset;
SetLayerBackgroundFilters();
}
void Layer::SetAlphaShape(std::unique_ptr<ShapeRects> shape) {
alpha_shape_ = std::move(shape);
SetLayerFilters();
if (delegate_)
delegate_->OnLayerAlphaShapeChanged();
}
void Layer::SetLayerFilters() {
cc::FilterOperations filters;
if (layer_custom_color_matrix_) {
filters.Append(cc::FilterOperation::CreateColorMatrixFilter(
*layer_custom_color_matrix_));
}
if (layer_hue_rotation_) {
filters.Append(
cc::FilterOperation::CreateHueRotateFilter(layer_hue_rotation_));
}
if (layer_saturation_) {
filters.Append(cc::FilterOperation::CreateSaturateFilter(
layer_saturation_));
}
if (layer_grayscale_) {
filters.Append(cc::FilterOperation::CreateGrayscaleFilter(
layer_grayscale_));
}
if (layer_inverted_)
filters.Append(cc::FilterOperation::CreateInvertFilter(1.0));
if (layer_sepia_)
filters.Append(cc::FilterOperation::CreateSepiaFilter(layer_sepia_));
if (layer_blur_sigma_) {
filters.Append(cc::FilterOperation::CreateBlurFilter(layer_blur_sigma_,
SkTileMode::kClamp));
}
// Brightness goes last, because the resulting colors neeed clamping, which
// cause further color matrix filters to be applied separately. In this order,
// they all can be combined in a single pass.
if (layer_brightness_) {
filters.Append(cc::FilterOperation::CreateSaturatingBrightnessFilter(
layer_brightness_));
}
if (alpha_shape_) {
filters.Append(
cc::FilterOperation::CreateAlphaThresholdFilter(*alpha_shape_));
}
cc_layer_->SetFilters(filters);
}
void Layer::SetLayerBackgroundFilters() {
cc::FilterOperations filters;
if (background_blur_sigma_) {
filters.Append(cc::FilterOperation::CreateBlurFilter(background_blur_sigma_,
SkTileMode::kClamp));
}
if (!background_offset_.IsOrigin()) {
filters.Append(cc::FilterOperation::CreateOffsetFilter(background_offset_));
}
// The background zoom is applied after the background offset to support
// positioning of the background *before* magnifying it. Offsetting after
// magnifying is almost equivalent except it can lead to surprising clipping
// at the layer bounds.
if (zoom_ != 1) {
filters.Append(cc::FilterOperation::CreateZoomFilter(zoom_, zoom_inset_));
}
cc_layer_->SetBackdropFilters(filters);
}
float Layer::GetTargetOpacity() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::OPACITY))
return animator_->GetTargetOpacity();
return opacity();
}
void Layer::SetVisible(bool visible) {
GetAnimator()->SetVisibility(visible);
}
void Layer::SetAcceptEvents(bool accept_events) {
if (accept_events_ == accept_events)
return;
accept_events_ = accept_events;
cc_layer_->SetHitTestable(IsHitTestableForCC());
}
bool Layer::GetTargetVisibility() const {
if (animator_ && animator_->IsAnimatingProperty(
LayerAnimationElement::VISIBILITY))
return animator_->GetTargetVisibility();
return visible_;
}
bool Layer::IsVisible() const {
const Layer* layer = this;
while (layer && layer->visible_)
layer = layer->parent_;
return layer == nullptr;
}
void Layer::SetRoundedCornerRadius(const gfx::RoundedCornersF& corner_radii) {
GetAnimator()->SetRoundedCorners(corner_radii);
}
void Layer::SetGradientMask(const gfx::LinearGradient& gradient_mask) {
GetAnimator()->SetGradientMask(gradient_mask);
}
void Layer::SetIsFastRoundedCorner(bool enable) {
cc_layer_->SetIsFastRoundedCorner(enable);
ScheduleDraw();
for (const auto& mirror : mirrors_)
mirror->dest()->SetIsFastRoundedCorner(enable);
}
bool Layer::GetTargetTransformRelativeTo(const Layer* ancestor,
gfx::Transform* transform) const {
return GetTransformRelativeToImpl(ancestor, /*is_target_transform=*/true,
transform);
}
bool Layer::GetTransformRelativeTo(const Layer* ancestor,
gfx::Transform* transform) const {
return GetTransformRelativeToImpl(ancestor, /*is_target_transform=*/false,
transform);
}
// static
void Layer::ConvertPointToLayer(const Layer* source,
const Layer* target,
bool use_target_transform,
gfx::PointF* point) {
if (source == target)
return;
const Layer* root_layer = GetRoot(source);
CHECK_EQ(root_layer, GetRoot(target));
if (source != root_layer)
source->ConvertPointForAncestor(root_layer, use_target_transform, point);
if (target != root_layer)
target->ConvertPointFromAncestor(root_layer, use_target_transform, point);
}
void Layer::SetFillsBoundsOpaquely(bool fills_bounds_opaquely) {
SetFillsBoundsOpaquelyWithReason(fills_bounds_opaquely,
PropertyChangeReason::NOT_FROM_ANIMATION);
}
void Layer::SetFillsBoundsCompletely(bool fills_bounds_completely) {
fills_bounds_completely_ = fills_bounds_completely;
}
void Layer::SetName(const std::string& name) {
name_ = name;
cc_layer_->SetDebugName(name);
}
bool Layer::SwitchToLayer(scoped_refptr<cc::Layer> new_layer) {
// Finish animations being handled by cc_layer_.
if (animator_) {
base::WeakPtr<Layer> weak_this = weak_ptr_factory_.GetWeakPtr();
animator_->StopAnimatingProperty(LayerAnimationElement::TRANSFORM);
if (!weak_this)
return false;
animator_->StopAnimatingProperty(LayerAnimationElement::OPACITY);
if (!weak_this)
return false;
animator_->SwitchToLayer(new_layer);
}
ResetSubtreeReflectedLayer();
if (texture_layer_.get())
texture_layer_->ClearClient();
cc_layer_->RemoveAllChildren();
if (cc_layer_->parent()) {
cc_layer_->mutable_parent()->ReplaceChild(cc_layer_, new_layer);
}
cc_layer_->ClearDebugInfo();
new_layer->SetOpacity(cc_layer_->opacity());
new_layer->SetTransform(cc_layer_->transform());
new_layer->SetPosition(cc_layer_->position());
new_layer->SetBackgroundColor(cc_layer_->background_color());
new_layer->SetSafeOpaqueBackgroundColor(
cc_layer_->SafeOpaqueBackgroundColor());
new_layer->SetSubtreeCaptureId(cc_layer_->subtree_capture_id());
new_layer->SetCacheRenderSurface(cc_layer_->cache_render_surface());
new_layer->SetTrilinearFiltering(cc_layer_->trilinear_filtering());
new_layer->SetRoundedCorner(cc_layer_->corner_radii());
new_layer->SetIsFastRoundedCorner(cc_layer_->is_fast_rounded_corner());
new_layer->SetMasksToBounds(cc_layer_->masks_to_bounds());
new_layer->SetGradientMask(cc_layer_->gradient_mask());
cc_layer_ = new_layer.get();
if (content_layer_) {
content_layer_->ClearClient();
content_layer_ = nullptr;
}
solid_color_layer_ = nullptr;
texture_layer_ = nullptr;
surface_layer_ = nullptr;
mirror_layer_ = nullptr;
for (auto* child : children_) {
DCHECK(child->cc_layer_);
cc_layer_->AddChild(child->cc_layer_.get());
}
cc_layer_->SetTransformOrigin(gfx::Point3F());
cc_layer_->SetContentsOpaque(fills_bounds_opaquely_);
cc_layer_->SetIsDrawable(type_ != LAYER_NOT_DRAWN);
cc_layer_->SetHitTestable(IsHitTestableForCC());
cc_layer_->SetHideLayerAndSubtree(!visible_);
cc_layer_->SetBackdropFilterQuality(backdrop_filter_quality_);
cc_layer_->SetElementId(cc::ElementId(cc_layer_->id()));
cc_layer_->SetDebugName(name_);
SetLayerFilters();
SetLayerBackgroundFilters();
return true;
}
bool Layer::SwitchCCLayerForTest() {
scoped_refptr<cc::PictureLayer> new_layer = cc::PictureLayer::Create(this);
if (!SwitchToLayer(new_layer))
return false;
content_layer_ = std::move(new_layer);
return true;
}
// Note: The code that sets this flag would be responsible to unset it on that
// Layer. We do not want to clone this flag to a cloned layer by accident,
// which could be a supprise. But we want to preserve it after switching to a
// new cc::Layer. There could be a whole subtree and the root changed, but does
// not mean we want to treat the cache all different.
void Layer::AddCacheRenderSurfaceRequest() {
++cache_render_surface_requests_;
TRACE_COUNTER_ID1("ui", "CacheRenderSurfaceRequests", this,
cache_render_surface_requests_);
if (cache_render_surface_requests_ == 1)
cc_layer_->SetCacheRenderSurface(true);
}
void Layer::RemoveCacheRenderSurfaceRequest() {
DCHECK_GT(cache_render_surface_requests_, 0u);
--cache_render_surface_requests_;
TRACE_COUNTER_ID1("ui", "CacheRenderSurfaceRequests", this,
cache_render_surface_requests_);
if (cache_render_surface_requests_ == 0)
cc_layer_->SetCacheRenderSurface(false);
}
void Layer::SetBackdropFilterQuality(const float quality) {
backdrop_filter_quality_ = quality / GetDeviceScaleFactor();
cc_layer_->SetBackdropFilterQuality(backdrop_filter_quality_);
}
void Layer::AddDeferredPaintRequest() {
++deferred_paint_requests_;
TRACE_COUNTER_ID1("ui", "DeferredPaintRequests", this,
deferred_paint_requests_);
}
void Layer::RemoveDeferredPaintRequest() {
DCHECK_GT(deferred_paint_requests_, 0u);
--deferred_paint_requests_;
TRACE_COUNTER_ID1("ui", "DeferredPaintRequests", this,
deferred_paint_requests_);
if (!deferred_paint_requests_ && !damaged_region_.IsEmpty())
ScheduleDraw();
}
// Note: The code that sets this flag would be responsible to unset it on that
// Layer. We do not want to clone this flag to a cloned layer by accident,
// which could be a supprise. But we want to preserve it after switching to a
// new cc::Layer. There could be a whole subtree and the root changed, but does
// not mean we want to treat the trilinear filtering all different.
void Layer::AddTrilinearFilteringRequest() {
++trilinear_filtering_request_;
TRACE_COUNTER_ID1("ui", "TrilinearFilteringRequests", this,
trilinear_filtering_request_);
if (trilinear_filtering_request_ == 1)
cc_layer_->SetTrilinearFiltering(true);
}
void Layer::RemoveTrilinearFilteringRequest() {
DCHECK_GT(trilinear_filtering_request_, 0u);
--trilinear_filtering_request_;