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// Copyright 2016 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 "cc/layers/layer_list_impl.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "cc/animation/animation_host.h"
#include "cc/layers/layer_impl.h"
#include "cc/layers/layer_list_host_impl.h"
namespace cc {
LayerListImpl::LayerListImpl(LayerListHostImpl* host_impl)
: layer_list_host_(host_impl) {}
LayerListImpl::~LayerListImpl() {}
AnimationRegistrar* LayerListImpl::GetAnimationRegistrar() const {
return layer_list_host_->animation_registrar();
}
LayerImpl* LayerListImpl::LayerById(int id) const {
LayerIdMap::const_iterator iter = layer_id_map_.find(id);
return iter != layer_id_map_.end() ? iter->second : NULL;
}
void LayerListImpl::RegisterLayer(LayerImpl* layer) {
DCHECK(!LayerById(layer->id()));
layer_id_map_[layer->id()] = layer;
if (layer_list_host_->animation_host())
layer_list_host_->animation_host()->RegisterLayer(
layer->id(),
IsActiveList() ? LayerListType::ACTIVE : LayerListType::PENDING);
}
void LayerListImpl::UnregisterLayer(LayerImpl* layer) {
DCHECK(LayerById(layer->id()));
if (layer_list_host_->animation_host())
layer_list_host_->animation_host()->UnregisterLayer(
layer->id(),
IsActiveList() ? LayerListType::ACTIVE : LayerListType::PENDING);
layer_id_map_.erase(layer->id());
}
size_t LayerListImpl::NumLayers() {
return layer_id_map_.size();
}
LayerImpl* LayerListImpl::FindActiveLayerById(int id) {
LayerListImpl* list = layer_list_host_->active_list();
if (!list)
return nullptr;
return list->LayerById(id);
}
LayerImpl* LayerListImpl::FindPendingLayerById(int id) {
LayerListImpl* list = layer_list_host_->pending_list();
if (!list)
return nullptr;
return list->LayerById(id);
}
void LayerListImpl::AddToElementMap(LayerImpl* layer) {
if (!layer->element_id() || !layer->mutable_properties())
return;
TRACE_EVENT2(TRACE_DISABLED_BY_DEFAULT("compositor-worker"),
"LayerListImpl::AddToElementMap", "element_id",
layer->element_id(), "layer_id", layer->id());
ElementLayers& layers = element_layers_map_[layer->element_id()];
if ((!layers.main || layer->IsActive()) && !layer->scrollable()) {
layers.main = layer;
} else if ((!layers.scroll || layer->IsActive()) && layer->scrollable()) {
TRACE_EVENT2("compositor-worker", "LayerListImpl::AddToElementMap scroll",
"element_id", layer->element_id(), "layer_id", layer->id());
layers.scroll = layer;
}
}
void LayerListImpl::RemoveFromElementMap(LayerImpl* layer) {
if (!layer->element_id())
return;
TRACE_EVENT2(TRACE_DISABLED_BY_DEFAULT("compositor-worker"),
"LayerListImpl::RemoveFromElementMap", "element_id",
layer->element_id(), "layer_id", layer->id());
ElementLayers& layers = element_layers_map_[layer->element_id()];
if (!layer->scrollable())
layers.main = nullptr;
if (layer->scrollable())
layers.scroll = nullptr;
if (!layers.main && !layers.scroll)
element_layers_map_.erase(layer->element_id());
}
LayerListImpl::ElementLayers LayerListImpl::GetMutableLayers(
uint64_t element_id) {
auto iter = element_layers_map_.find(element_id);
if (iter == element_layers_map_.end())
return ElementLayers();
return iter->second;
}
bool LayerListImpl::IsActiveList() const {
return layer_list_host_->active_list() == this;
}
bool LayerListImpl::IsPendingList() const {
return layer_list_host_->pending_list() == this;
}
} // namespace cc
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