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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/debug/render_layer.h"
#include "cobalt/render_tree/composition_node.h"
namespace cobalt {
namespace debug {
RenderLayer::RenderLayer(const OnChangedCallback& on_changed_callback)
: on_changed_callback_(on_changed_callback),
back_layer_(NULL),
front_layer_(NULL) {}
void RenderLayer::SetBackLayer(const scoped_refptr<render_tree::Node>& layer) {
back_layer_ = layer;
Combine();
}
void RenderLayer::SetFrontLayer(const scoped_refptr<render_tree::Node>& layer) {
front_layer_ = layer;
Combine();
}
void RenderLayer::Combine() {
render_tree::CompositionNode::Builder builder;
if (back_layer_) {
builder.AddChild(back_layer_);
}
if (front_layer_) {
builder.AddChild(front_layer_);
}
scoped_refptr<render_tree::Node> output =
new render_tree::CompositionNode(builder);
on_changed_callback_.Run(output);
}
} // namespace debug
} // namespace cobalt