Robert Carr | 2047fae | 2016-11-28 14:09:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_SURFACE_FLINGER_LAYER_VECTOR_H |
| 18 | #define ANDROID_SURFACE_FLINGER_LAYER_VECTOR_H |
| 19 | |
| 20 | #include <utils/SortedVector.h> |
| 21 | #include <utils/RefBase.h> |
| 22 | |
| 23 | #include <functional> |
| 24 | |
| 25 | namespace android { |
| 26 | class Layer; |
| 27 | |
| 28 | /* |
| 29 | * Used by the top-level SurfaceFlinger state and individual layers |
| 30 | * to track layers they own sorted according to Z-order. Provides traversal |
| 31 | * functions for traversing all owned layers, and their descendents. |
| 32 | */ |
| 33 | class LayerVector : public SortedVector<sp<Layer>> { |
| 34 | public: |
Dan Stoza | 412903f | 2017-04-27 13:42:17 -0700 | [diff] [blame] | 35 | enum class StateSet { |
| 36 | Invalid, |
| 37 | Current, |
| 38 | Drawing, |
| 39 | }; |
| 40 | |
chaviw | fd46261 | 2018-05-31 16:11:27 -0700 | [diff] [blame] | 41 | explicit LayerVector(const StateSet stateSet); |
| 42 | LayerVector(const LayerVector& rhs, const StateSet stateSet); |
| 43 | ~LayerVector() override; |
| 44 | |
| 45 | LayerVector& operator=(const LayerVector& rhs); |
| 46 | |
Robert Carr | 2047fae | 2016-11-28 14:09:09 -0800 | [diff] [blame] | 47 | // Sorts layer by layer-stack, Z order, and finally creation order (sequence). |
| 48 | int do_compare(const void* lhs, const void* rhs) const override; |
| 49 | |
Dan Stoza | 412903f | 2017-04-27 13:42:17 -0700 | [diff] [blame] | 50 | using Visitor = std::function<void(Layer*)>; |
| 51 | void traverseInReverseZOrder(StateSet stateSet, const Visitor& visitor) const; |
| 52 | void traverseInZOrder(StateSet stateSet, const Visitor& visitor) const; |
chaviw | fd46261 | 2018-05-31 16:11:27 -0700 | [diff] [blame] | 53 | |
| 54 | private: |
| 55 | const StateSet mStateSet; |
Robert Carr | 2047fae | 2016-11-28 14:09:09 -0800 | [diff] [blame] | 56 | }; |
| 57 | } |
| 58 | |
| 59 | #endif /* ANDROID_SURFACE_FLINGER_LAYER_VECTOR_H_ */ |