| // Copyright 2015 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/blink/web_compositor_mutable_state_provider_impl.h" |
| |
| #include "cc/blink/web_compositor_mutable_state_impl.h" |
| #include "cc/layers/layer_impl.h" |
| #include "cc/trees/layer_tree_impl.h" |
| |
| namespace cc_blink { |
| |
| WebCompositorMutableStateProviderImpl::WebCompositorMutableStateProviderImpl( |
| cc::LayerTreeImpl* state, |
| cc::LayerTreeMutationMap* mutations) |
| : state_(state), mutations_(mutations) {} |
| |
| WebCompositorMutableStateProviderImpl:: |
| ~WebCompositorMutableStateProviderImpl() {} |
| |
| blink::WebPassOwnPtr<blink::WebCompositorMutableState> |
| WebCompositorMutableStateProviderImpl::getMutableStateFor(uint64_t element_id) { |
| cc::LayerTreeImpl::ElementLayers layers = |
| state_->GetMutableLayers(element_id); |
| |
| if (!layers.main && !layers.scroll) |
| return nullptr; |
| |
| return blink::adoptWebPtr<blink::WebCompositorMutableState>( |
| new WebCompositorMutableStateImpl(&(*mutations_)[element_id], layers.main, |
| layers.scroll)); |
| } |
| |
| } // namespace cc_blink |
