| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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 "LayerVector.h" |
| #include "Layer.h" |
| |
| namespace android { |
| LayerVector::LayerVector(const LayerVector& rhs) : SortedVector<sp<Layer>>(rhs) { |
| } |
| |
| int LayerVector::do_compare(const void* lhs, const void* rhs) const |
| { |
| // sort layers per layer-stack, then by z-order and finally by sequence |
| const auto& l = *reinterpret_cast<const sp<Layer>*>(lhs); |
| const auto& r = *reinterpret_cast<const sp<Layer>*>(rhs); |
| |
| uint32_t ls = l->getCurrentState().layerStack; |
| uint32_t rs = r->getCurrentState().layerStack; |
| if (ls != rs) |
| return ls - rs; |
| |
| uint32_t lz = l->getCurrentState().z; |
| uint32_t rz = r->getCurrentState().z; |
| if (lz != rz) |
| return lz - rz; |
| |
| return l->sequence - r->sequence; |
| } |
| |
| void LayerVector::traverseInZOrder(const std::function<void(Layer*)>& consume) const { |
| for (size_t i = 0; i < size(); i++) { |
| (*this)[i]->traverseInZOrder(consume); |
| } |
| } |
| |
| void LayerVector::traverseInReverseZOrder(const std::function<void(Layer*)>& consume) const { |
| for (auto i = static_cast<int64_t>(size()) - 1; i >= 0; i--) { |
| (*this)[i]->traverseInReverseZOrder(consume); |
| } |
| } |
| } // namespace android |