blob: ac20550710eff3c762a72a6000170a9b61ae6ae6 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// 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 <algorithm>
#include <memory>
#include <utility>
#include "base/auto_reset.h"
#include "base/command_line.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/trace_event/trace_event.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/output/copy_output_request.h"
#include "cc/output/filter_operation.h"
#include "cc/output/filter_operations.h"
#include "cc/playback/display_item_list_settings.h"
#include "cc/resources/transferable_resource.h"
#include "cc/trees/layer_tree_settings.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/compositor/dip_util.h"
#include "ui/compositor/layer_animator.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/point3_f.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/interpolated_transform.h"
namespace {
const ui::Layer* GetRoot(const ui::Layer* layer) {
while (layer->parent())
layer = layer->parent();
return layer;
}
} // namespace
namespace ui {
Layer::Layer()
: type_(LAYER_TEXTURED),
compositor_(NULL),
parent_(NULL),
visible_(true),
fills_bounds_opaquely_(true),
fills_bounds_completely_(false),
background_blur_radius_(0),
layer_saturation_(0.0f),
layer_brightness_(0.0f),
layer_grayscale_(0.0f),
layer_inverted_(false),
layer_mask_(NULL),
layer_mask_back_link_(NULL),
zoom_(1),
zoom_inset_(0),
delegate_(NULL),
owner_(NULL),
cc_layer_(NULL),
device_scale_factor_(1.0f) {
CreateCcLayer();
}
Layer::Layer(LayerType type)
: type_(type),
compositor_(NULL),
parent_(NULL),
visible_(true),
fills_bounds_opaquely_(true),
fills_bounds_completely_(false),
background_blur_radius_(0),
layer_saturation_(0.0f),
layer_brightness_(0.0f),
layer_grayscale_(0.0f),
layer_inverted_(false),
layer_mask_(NULL),
layer_mask_back_link_(NULL),
zoom_(1),
zoom_inset_(0),
delegate_(NULL),
owner_(NULL),
cc_layer_(NULL),
device_scale_factor_(1.0f) {
CreateCcLayer();
}
Layer::~Layer() {
for (auto& observer : observer_list_)
observer.LayerDestroyed(this);
// Destroying the animator may cause observers to use the layer (and
// indirectly the WebLayer). Destroy the animator first so that the WebLayer
// is still around.
SetAnimator(nullptr);
if (compositor_)
compositor_->SetRootLayer(NULL);
if (parent_)
parent_->Remove(this);
if (layer_mask_)
SetMaskLayer(NULL);
if (layer_mask_back_link_)
layer_mask_back_link_->SetMaskLayer(NULL);
for (size_t i = 0; i < children_.size(); ++i)
children_[i]->parent_ = NULL;
cc_layer_->RemoveFromParent();
if (mailbox_release_callback_)
mailbox_release_callback_->Run(gpu::SyncToken(), false);
}
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_);
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) {
DCHECK(!child->compositor_);
if (child->parent_)
child->parent_->Remove(child);
child->parent_ = this;
children_.push_back(child);
cc_layer_->AddChild(child->cc_layer_);
child->OnDeviceScaleFactorChanged(device_scale_factor_);
Compositor* compositor = GetCompositor();
if (compositor)
child->SetCompositorForAnimatorsInTree(compositor);
}
void Layer::Remove(Layer* child) {
// 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(ui::LayerAnimationElement::BOUNDS);
Compositor* compositor = GetCompositor();
if (compositor)
child->ResetCompositorForAnimatorsInTree(compositor);
std::vector<Layer*>::iterator i =
std::find(children_.begin(), children_.end(), child);
DCHECK(i != children_.end());
children_.erase(i);
child->parent_ = NULL;
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(LayerAnimator* animator) {
Compositor* compositor = GetCompositor();
if (animator_) {
if (compositor)
animator_->DetachLayerAndTimeline(compositor);
animator_->SetDelegate(nullptr);
}
animator_ = animator;
if (animator_) {
animator_->SetDelegate(this);
if (compositor)
animator_->AttachLayerAndTimeline(compositor);
}
}
LayerAnimator* Layer::GetAnimator() {
if (!animator_.get())
SetAnimator(LayerAnimator::CreateDefaultAnimator());
return animator_.get();
}
void Layer::SetTransform(const gfx::Transform& transform) {
GetAnimator()->SetTransform(transform);
}
gfx::Transform Layer::GetTargetTransform() const {
if (animator_.get() && 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_ = offset;
RecomputePosition();
}
gfx::Rect Layer::GetTargetBounds() const {
if (animator_.get() && 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();
}
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(int blur_radius) {
background_blur_radius_ = blur_radius;
SetLayerBackgroundFilters();
}
void Layer::SetLayerSaturation(float saturation) {
layer_saturation_ = saturation;
SetLayerFilters();
}
void Layer::SetLayerBrightness(float brightness) {
GetAnimator()->SetBrightness(brightness);
}
float Layer::GetTargetBrightness() const {
if (animator_.get() && animator_->IsAnimatingProperty(
LayerAnimationElement::BRIGHTNESS)) {
return animator_->GetTargetBrightness();
}
return layer_brightness();
}
void Layer::SetLayerGrayscale(float grayscale) {
GetAnimator()->SetGrayscale(grayscale);
}
float Layer::GetTargetGrayscale() const {
if (animator_.get() && animator_->IsAnimatingProperty(
LayerAnimationElement::GRAYSCALE)) {
return animator_->GetTargetGrayscale();
}
return layer_grayscale();
}
void Layer::SetLayerInverted(bool inverted) {
layer_inverted_ = inverted;
SetLayerFilters();
}
void Layer::SetMaskLayer(Layer* layer_mask) {
// 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_);
if (layer_mask_ == layer_mask)
return;
// 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_)
layer_mask_->layer_mask_back_link_ = NULL;
layer_mask_ = layer_mask;
cc_layer_->SetMaskLayer(layer_mask ? layer_mask->cc_layer_ : NULL);
// We need to reference the linked object so that it can properly break the
// link to us when it gets deleted.
if (layer_mask) {
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::SetAlphaShape(std::unique_ptr<SkRegion> region) {
alpha_shape_ = std::move(region);
SetLayerFilters();
}
void Layer::SetLayerFilters() {
cc::FilterOperations filters;
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));
// 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_, 0.f, 0.f));
}
cc_layer_->SetFilters(filters);
}
void Layer::SetLayerBackgroundFilters() {
cc::FilterOperations filters;
if (zoom_ != 1)
filters.Append(cc::FilterOperation::CreateZoomFilter(zoom_, zoom_inset_));
if (background_blur_radius_) {
filters.Append(cc::FilterOperation::CreateBlurFilter(
background_blur_radius_));
}
cc_layer_->SetBackgroundFilters(filters);
}
float Layer::GetTargetOpacity() const {
if (animator_.get() && animator_->IsAnimatingProperty(
LayerAnimationElement::OPACITY))
return animator_->GetTargetOpacity();
return opacity();
}
void Layer::SetVisible(bool visible) {
GetAnimator()->SetVisibility(visible);
}
bool Layer::GetTargetVisibility() const {
if (animator_.get() && animator_->IsAnimatingProperty(
LayerAnimationElement::VISIBILITY))
return animator_->GetTargetVisibility();
return visible_;
}
bool Layer::IsDrawn() const {
const Layer* layer = this;
while (layer && layer->visible_)
layer = layer->parent_;
return layer == NULL;
}
bool Layer::ShouldDraw() const {
return type_ != LAYER_NOT_DRAWN && GetCombinedOpacity() > 0.0f;
}
// static
void Layer::ConvertPointToLayer(const Layer* source,
const Layer* target,
gfx::Point* 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, point);
if (target != root_layer)
target->ConvertPointFromAncestor(root_layer, point);
}
bool Layer::GetTargetTransformRelativeTo(const Layer* ancestor,
gfx::Transform* transform) const {
const Layer* p = this;
for (; p && p != ancestor; p = p->parent()) {
gfx::Transform translation;
translation.Translate(static_cast<float>(p->bounds().x()),
static_cast<float>(p->bounds().y()));
// Use target transform so that result will be correct once animation is
// finished.
if (!p->GetTargetTransform().IsIdentity())
transform->ConcatTransform(p->GetTargetTransform());
transform->ConcatTransform(translation);
}
return p == ancestor;
}
void Layer::SetFillsBoundsOpaquely(bool fills_bounds_opaquely) {
if (fills_bounds_opaquely_ == fills_bounds_opaquely)
return;
fills_bounds_opaquely_ = fills_bounds_opaquely;
cc_layer_->SetContentsOpaque(fills_bounds_opaquely);
}
void Layer::SetFillsBoundsCompletely(bool fills_bounds_completely) {
fills_bounds_completely_ = fills_bounds_completely;
}
void Layer::SwitchToLayer(scoped_refptr<cc::Layer> new_layer) {
// Finish animations being handled by cc_layer_.
if (animator_.get()) {
animator_->StopAnimatingProperty(LayerAnimationElement::TRANSFORM);
animator_->StopAnimatingProperty(LayerAnimationElement::OPACITY);
animator_->SwitchToLayer(new_layer);
}
if (texture_layer_.get())
texture_layer_->ClearClient();
cc_layer_->RemoveAllChildren();
if (cc_layer_->parent()) {
cc_layer_->parent()->ReplaceChild(cc_layer_, new_layer);
}
cc_layer_->SetLayerClient(NULL);
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());
cc_layer_ = new_layer.get();
content_layer_ = NULL;
solid_color_layer_ = NULL;
texture_layer_ = NULL;
surface_layer_ = NULL;
for (size_t i = 0; i < children_.size(); ++i) {
DCHECK(children_[i]->cc_layer_);
cc_layer_->AddChild(children_[i]->cc_layer_);
}
cc_layer_->SetLayerClient(this);
cc_layer_->SetTransformOrigin(gfx::Point3F());
cc_layer_->SetContentsOpaque(fills_bounds_opaquely_);
cc_layer_->SetIsDrawable(type_ != LAYER_NOT_DRAWN);
cc_layer_->SetHideLayerAndSubtree(!visible_);
cc_layer_->SetElementId(cc::ElementId(cc_layer_->id(), 0));
SetLayerFilters();
SetLayerBackgroundFilters();
}
void Layer::SwitchCCLayerForTest() {
scoped_refptr<cc::Layer> new_layer = cc::PictureLayer::Create(this);
SwitchToLayer(new_layer);
content_layer_ = new_layer;
}
void Layer::SetTextureMailbox(
const cc::TextureMailbox& mailbox,
std::unique_ptr<cc::SingleReleaseCallback> release_callback,
gfx::Size texture_size_in_dip) {
DCHECK(type_ == LAYER_TEXTURED || type_ == LAYER_SOLID_COLOR);
DCHECK(mailbox.IsValid());
DCHECK(release_callback);
if (!texture_layer_.get()) {
scoped_refptr<cc::TextureLayer> new_layer =
cc::TextureLayer::CreateForMailbox(this);
new_layer->SetFlipped(true);
SwitchToLayer(new_layer);
texture_layer_ = new_layer;
// Reset the frame_size_in_dip_ so that SetTextureSize() will not early out,
// the frame_size_in_dip_ was for a previous (different) |texture_layer_|.
frame_size_in_dip_ = gfx::Size();
}
if (mailbox_release_callback_)
mailbox_release_callback_->Run(gpu::SyncToken(), false);
mailbox_release_callback_ = std::move(release_callback);
mailbox_ = mailbox;
SetTextureSize(texture_size_in_dip);
}
void Layer::SetTextureSize(gfx::Size texture_size_in_dip) {
DCHECK(texture_layer_.get());
if (frame_size_in_dip_ == texture_size_in_dip)
return;
frame_size_in_dip_ = texture_size_in_dip;
RecomputeDrawsContentAndUVRect();
texture_layer_->SetNeedsDisplay();
}
void Layer::SetTextureFlipped(bool flipped) {
DCHECK(texture_layer_.get());
texture_layer_->SetFlipped(flipped);
}
bool Layer::TextureFlipped() const {
DCHECK(texture_layer_.get());
return texture_layer_->flipped();
}
void Layer::SetShowSurface(
const cc::SurfaceId& surface_id,
const cc::SurfaceLayer::SatisfyCallback& satisfy_callback,
const cc::SurfaceLayer::RequireCallback& require_callback,
gfx::Size surface_size,
float scale,
gfx::Size frame_size_in_dip) {
DCHECK(type_ == LAYER_TEXTURED || type_ == LAYER_SOLID_COLOR);
scoped_refptr<cc::SurfaceLayer> new_layer =
cc::SurfaceLayer::Create(satisfy_callback, require_callback);
new_layer->SetSurfaceId(surface_id, scale, surface_size);
SwitchToLayer(new_layer);
surface_layer_ = new_layer;
frame_size_in_dip_ = frame_size_in_dip;
RecomputeDrawsContentAndUVRect();
for (auto& observer : observer_list_)
observer.SurfaceChanged(this);
}
void Layer::SetShowSolidColorContent() {
DCHECK_EQ(type_, LAYER_SOLID_COLOR);
if (solid_color_layer_.get())
return;
scoped_refptr<cc::SolidColorLayer> new_layer = cc::SolidColorLayer::Create();
SwitchToLayer(new_layer);
solid_color_layer_ = new_layer;
mailbox_ = cc::TextureMailbox();
if (mailbox_release_callback_) {
mailbox_release_callback_->Run(gpu::SyncToken(), false);
mailbox_release_callback_.reset();
}
RecomputeDrawsContentAndUVRect();
}
void Layer::UpdateNinePatchLayerImage(const gfx::ImageSkia& image) {
DCHECK(type_ == LAYER_NINE_PATCH && nine_patch_layer_.get());
nine_patch_layer_image_ = image;
SkBitmap bitmap = nine_patch_layer_image_.GetRepresentation(
device_scale_factor_).sk_bitmap();
SkBitmap bitmap_copy;
if (bitmap.isImmutable()) {
bitmap_copy = bitmap;
} else {
// UIResourceBitmap requires an immutable copy of the input |bitmap|.
bitmap.copyTo(&bitmap_copy);
bitmap_copy.setImmutable();
}
nine_patch_layer_->SetBitmap(bitmap_copy);
}
void Layer::UpdateNinePatchLayerAperture(const gfx::Rect& aperture_in_dip) {
DCHECK(type_ == LAYER_NINE_PATCH && nine_patch_layer_.get());
nine_patch_layer_aperture_ = aperture_in_dip;
gfx::Rect aperture_in_pixel = ConvertRectToPixel(this, aperture_in_dip);
nine_patch_layer_->SetAperture(aperture_in_pixel);
}
void Layer::UpdateNinePatchLayerBorder(const gfx::Rect& border) {
DCHECK_EQ(type_, LAYER_NINE_PATCH);
DCHECK(nine_patch_layer_.get());
nine_patch_layer_->SetBorder(border);
}
void Layer::UpdateNinePatchOcclusion(const gfx::Rect& occlusion) {
DCHECK(type_ == LAYER_NINE_PATCH && nine_patch_layer_.get());
nine_patch_layer_->SetLayerOcclusion(occlusion);
}
void Layer::SetColor(SkColor color) { GetAnimator()->SetColor(color); }
SkColor Layer::GetTargetColor() {
if (GetAnimator()->IsAnimatingProperty(LayerAnimationElement::COLOR))
return GetAnimator()->GetTargetColor();
return cc_layer_->background_color();
}
SkColor Layer::background_color() const {
return cc_layer_->background_color();
}
bool Layer::SchedulePaint(const gfx::Rect& invalid_rect) {
if ((type_ == LAYER_SOLID_COLOR && !texture_layer_.get()) ||
type_ == LAYER_NINE_PATCH || (!delegate_ && !mailbox_.IsValid()))
return false;
damaged_region_.Union(invalid_rect);
ScheduleDraw();
if (layer_mask_) {
layer_mask_->damaged_region_.Union(invalid_rect);
layer_mask_->ScheduleDraw();
}
return true;
}
void Layer::ScheduleDraw() {
Compositor* compositor = GetCompositor();
if (compositor)
compositor->ScheduleDraw();
}
void Layer::SendDamagedRects() {
if (damaged_region_.IsEmpty())
return;
if (!delegate_ && !mailbox_.IsValid())
return;
for (cc::Region::Iterator iter(damaged_region_); iter.has_rect(); iter.next())
cc_layer_->SetNeedsDisplayRect(iter.rect());
if (layer_mask_)
layer_mask_->SendDamagedRects();
if (content_layer_)
paint_region_.Union(damaged_region_);
damaged_region_.Clear();
}
void Layer::CompleteAllAnimations() {
typedef std::vector<scoped_refptr<LayerAnimator> > LayerAnimatorVector;
LayerAnimatorVector animators;
CollectAnimators(&animators);
for (LayerAnimatorVector::const_iterator it = animators.begin();
it != animators.end();
++it) {
(*it)->StopAnimating();
}
}
void Layer::SuppressPaint() {
if (!delegate_)
return;
delegate_ = NULL;
for (size_t i = 0; i < children_.size(); ++i)
children_[i]->SuppressPaint();
}
void Layer::OnDeviceScaleFactorChanged(float device_scale_factor) {
if (device_scale_factor_ == device_scale_factor)
return;
if (animator_.get())
animator_->StopAnimatingProperty(LayerAnimationElement::TRANSFORM);
device_scale_factor_ = device_scale_factor;
RecomputeDrawsContentAndUVRect();
RecomputePosition();
if (nine_patch_layer_) {
UpdateNinePatchLayerImage(nine_patch_layer_image_);
UpdateNinePatchLayerAperture(nine_patch_layer_aperture_);
}
SchedulePaint(gfx::Rect(bounds_.size()));
if (delegate_)
delegate_->OnDeviceScaleFactorChanged(device_scale_factor);
for (size_t i = 0; i < children_.size(); ++i)
children_[i]->OnDeviceScaleFactorChanged(device_scale_factor);
if (layer_mask_)
layer_mask_->OnDeviceScaleFactorChanged(device_scale_factor);
}
void Layer::OnDelegatedFrameDamage(const gfx::Rect& damage_rect_in_dip) {
DCHECK(surface_layer_.get());
if (delegate_)
delegate_->OnDelegatedFrameDamage(damage_rect_in_dip);
}
void Layer::SetScrollable(Layer* parent_clip_layer,
const base::Closure& on_scroll) {
cc_layer_->SetScrollClipLayerId(parent_clip_layer->cc_layer_->id());
cc_layer_->set_did_scroll_callback(on_scroll);
cc_layer_->SetUserScrollable(true, true);
}
gfx::ScrollOffset Layer::CurrentScrollOffset() const {
const Compositor* compositor = GetCompositor();
gfx::ScrollOffset offset;
if (compositor &&
compositor->GetScrollOffsetForLayer(cc_layer_->id(), &offset))
return offset;
return cc_layer_->scroll_offset();
}
void Layer::SetScrollOffset(const gfx::ScrollOffset& offset) {
Compositor* compositor = GetCompositor();
bool scrolled_on_impl_side =
compositor && compositor->ScrollLayerTo(cc_layer_->id(), offset);
if (!scrolled_on_impl_side)
cc_layer_->SetScrollOffset(offset);
DCHECK_EQ(offset.x(), CurrentScrollOffset().x());
DCHECK_EQ(offset.y(), CurrentScrollOffset().y());
}
void Layer::RequestCopyOfOutput(
std::unique_ptr<cc::CopyOutputRequest> request) {
cc_layer_->RequestCopyOfOutput(std::move(request));
}
gfx::Rect Layer::PaintableRegion() {
return gfx::Rect(size());
}
scoped_refptr<cc::DisplayItemList> Layer::PaintContentsToDisplayList(
ContentLayerClient::PaintingControlSetting painting_control) {
TRACE_EVENT1("ui", "Layer::PaintContentsToDisplayList", "name", name_);
gfx::Rect local_bounds(bounds().size());
gfx::Rect invalidation(
gfx::IntersectRects(paint_region_.bounds(), local_bounds));
paint_region_.Clear();
cc::DisplayItemListSettings settings;
settings.use_cached_picture = false;
scoped_refptr<cc::DisplayItemList> display_list =
cc::DisplayItemList::Create(settings);
if (delegate_) {
delegate_->OnPaintLayer(
PaintContext(display_list.get(), device_scale_factor_, invalidation));
}
display_list->Finalize();
for (auto& observer : observer_list_)
observer.DidPaintLayer(this, invalidation);
return display_list;
}
bool Layer::FillsBoundsCompletely() const { return fills_bounds_completely_; }
size_t Layer::GetApproximateUnsharedMemoryUsage() const {
// Most of the "picture memory" is shared with the cc::DisplayItemList, so
// there's nothing significant to report here.
return 0;
}
bool Layer::PrepareTextureMailbox(
cc::TextureMailbox* mailbox,
std::unique_ptr<cc::SingleReleaseCallback>* release_callback) {
if (!mailbox_release_callback_)
return false;
*mailbox = mailbox_;
*release_callback = std::move(mailbox_release_callback_);
return true;
}
class LayerDebugInfo : public base::trace_event::ConvertableToTraceFormat {
public:
explicit LayerDebugInfo(const std::string& name) : name_(name) {}
~LayerDebugInfo() override {}
void AppendAsTraceFormat(std::string* out) const override {
base::DictionaryValue dictionary;
dictionary.SetString("layer_name", name_);
base::JSONWriter::Write(dictionary, out);
}
private:
std::string name_;
};
std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
Layer::TakeDebugInfo(cc::Layer* layer) {
return base::WrapUnique(new LayerDebugInfo(name_));
}
void Layer::didUpdateMainThreadScrollingReasons() {}
void Layer::CollectAnimators(
std::vector<scoped_refptr<LayerAnimator>>* animators) {
if (animator_ && animator_->is_animating())
animators->push_back(animator_);
for (auto* child : children_)
child->CollectAnimators(animators);
}
void Layer::StackRelativeTo(Layer* child, Layer* other, bool above) {
DCHECK_NE(child, other);
DCHECK_EQ(this, child->parent());
DCHECK_EQ(this, other->parent());
const size_t child_i =
std::find(children_.begin(), children_.end(), child) - children_.begin();
const size_t other_i =
std::find(children_.begin(), children_.end(), other) - children_.begin();
if ((above && child_i == other_i + 1) || (!above && child_i + 1 == other_i))
return;
const size_t dest_i =
above ?
(child_i < other_i ? other_i : other_i + 1) :
(child_i < other_i ? other_i - 1 : other_i);
children_.erase(children_.begin() + child_i);
children_.insert(children_.begin() + dest_i, child);
child->cc_layer_->RemoveFromParent();
cc_layer_->InsertChild(child->cc_layer_, dest_i);
}
bool Layer::ConvertPointForAncestor(const Layer* ancestor,
gfx::Point* point) const {
gfx::Transform transform;
bool result = GetTargetTransformRelativeTo(ancestor, &transform);
auto p = gfx::Point3F(gfx::PointF(*point));
transform.TransformPoint(&p);
*point = gfx::ToFlooredPoint(p.AsPointF());
return result;
}
bool Layer::ConvertPointFromAncestor(const Layer* ancestor,
gfx::Point* point) const {
gfx::Transform transform;
bool result = GetTargetTransformRelativeTo(ancestor, &transform);
auto p = gfx::Point3F(gfx::PointF(*point));
transform.TransformPointReverse(&p);
*point = gfx::ToFlooredPoint(p.AsPointF());
return result;
}
void Layer::SetBoundsFromAnimation(const gfx::Rect& bounds) {
if (bounds == bounds_)
return;
base::Closure closure;
const gfx::Rect old_bounds = bounds_;
bounds_ = bounds;
RecomputeDrawsContentAndUVRect();
RecomputePosition();
if (delegate_)
delegate_->OnLayerBoundsChanged(old_bounds);
if (bounds.size() == old_bounds.size()) {
// Don't schedule a draw if we're invisible. We'll schedule one
// automatically when we get visible.
if (IsDrawn())
ScheduleDraw();
} else {
// Always schedule a paint, even if we're invisible.
SchedulePaint(gfx::Rect(bounds.size()));
}
}
void Layer::SetTransformFromAnimation(const gfx::Transform& transform) {
cc_layer_->SetTransform(transform);
}
void Layer::SetOpacityFromAnimation(float opacity) {
cc_layer_->SetOpacity(opacity);
ScheduleDraw();
}
void Layer::SetVisibilityFromAnimation(bool visible) {
if (visible_ == visible)
return;
visible_ = visible;
cc_layer_->SetHideLayerAndSubtree(!visible_);
}
void Layer::SetBrightnessFromAnimation(float brightness) {
layer_brightness_ = brightness;
SetLayerFilters();
}
void Layer::SetGrayscaleFromAnimation(float grayscale) {
layer_grayscale_ = grayscale;
SetLayerFilters();
}
void Layer::SetColorFromAnimation(SkColor color) {
DCHECK_EQ(type_, LAYER_SOLID_COLOR);
cc_layer_->SetBackgroundColor(color);
SetFillsBoundsOpaquely(SkColorGetA(color) == 0xFF);
}
void Layer::ScheduleDrawForAnimation() {
ScheduleDraw();
}
const gfx::Rect& Layer::GetBoundsForAnimation() const {
return bounds();
}
gfx::Transform Layer::GetTransformForAnimation() const {
return transform();
}
float Layer::GetOpacityForAnimation() const {
return opacity();
}
bool Layer::GetVisibilityForAnimation() const {
return visible();
}
float Layer::GetBrightnessForAnimation() const {
return layer_brightness();
}
float Layer::GetGrayscaleForAnimation() const {
return layer_grayscale();
}
SkColor Layer::GetColorForAnimation() const {
// WebColor is equivalent to SkColor, per WebColor.h.
// The NULL check is here since this is invoked regardless of whether we have
// been configured as LAYER_SOLID_COLOR.
return solid_color_layer_.get() ?
solid_color_layer_->background_color() : SK_ColorBLACK;
}
float Layer::GetDeviceScaleFactor() const {
return device_scale_factor_;
}
LayerAnimatorCollection* Layer::GetLayerAnimatorCollection() {
Compositor* compositor = GetCompositor();
return compositor ? compositor->layer_animator_collection() : NULL;
}
cc::Layer* Layer::GetCcLayer() const {
return cc_layer_;
}
LayerThreadedAnimationDelegate* Layer::GetThreadedAnimationDelegate() {
DCHECK(animator_);
return animator_.get();
}
void Layer::CreateCcLayer() {
if (type_ == LAYER_SOLID_COLOR) {
solid_color_layer_ = cc::SolidColorLayer::Create();
cc_layer_ = solid_color_layer_.get();
} else if (type_ == LAYER_NINE_PATCH) {
nine_patch_layer_ = cc::NinePatchLayer::Create();
cc_layer_ = nine_patch_layer_.get();
} else {
content_layer_ = cc::PictureLayer::Create(this);
cc_layer_ = content_layer_.get();
}
cc_layer_->SetTransformOrigin(gfx::Point3F());
cc_layer_->SetContentsOpaque(true);
cc_layer_->SetIsDrawable(type_ != LAYER_NOT_DRAWN);
cc_layer_->SetLayerClient(this);
cc_layer_->SetElementId(cc::ElementId(cc_layer_->id(), 0));
RecomputePosition();
}
gfx::Transform Layer::transform() const {
return cc_layer_->transform();
}
void Layer::RecomputeDrawsContentAndUVRect() {
DCHECK(cc_layer_);
gfx::Size size(bounds_.size());
if (texture_layer_.get()) {
size.SetToMin(frame_size_in_dip_);
gfx::PointF uv_top_left(0.f, 0.f);
gfx::PointF uv_bottom_right(
static_cast<float>(size.width()) / frame_size_in_dip_.width(),
static_cast<float>(size.height()) / frame_size_in_dip_.height());
texture_layer_->SetUV(uv_top_left, uv_bottom_right);
} else if (surface_layer_.get()) {
size.SetToMin(frame_size_in_dip_);
}
cc_layer_->SetBounds(size);
}
void Layer::RecomputePosition() {
cc_layer_->SetPosition(gfx::PointF(bounds_.origin()) +
subpixel_position_offset_);
}
void Layer::SetCompositorForAnimatorsInTree(Compositor* compositor) {
DCHECK(compositor);
LayerAnimatorCollection* collection = compositor->layer_animator_collection();
if (animator_) {
if (animator_->is_animating())
animator_->AddToCollection(collection);
animator_->AttachLayerAndTimeline(compositor);
}
for (auto* child : children_)
child->SetCompositorForAnimatorsInTree(compositor);
}
void Layer::ResetCompositorForAnimatorsInTree(Compositor* compositor) {
DCHECK(compositor);
LayerAnimatorCollection* collection = compositor->layer_animator_collection();
if (animator_) {
animator_->DetachLayerAndTimeline(compositor);
animator_->RemoveFromCollection(collection);
}
for (auto* child : children_)
child->ResetCompositorForAnimatorsInTree(compositor);
}
} // namespace ui