| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| // #define LOG_NDEBUG 0 |
| #undef LOG_TAG |
| #define LOG_TAG "LayerDim" |
| |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| |
| #include <ui/GraphicBuffer.h> |
| |
| #include "LayerDim.h" |
| #include "SurfaceFlinger.h" |
| #include "DisplayDevice.h" |
| #include "RenderEngine/RenderEngine.h" |
| |
| namespace android { |
| // --------------------------------------------------------------------------- |
| |
| LayerDim::LayerDim(SurfaceFlinger* flinger, const sp<Client>& client, |
| const String8& name, uint32_t w, uint32_t h, uint32_t flags) |
| : Layer(flinger, client, name, w, h, flags) { |
| } |
| |
| LayerDim::~LayerDim() { |
| } |
| |
| void LayerDim::onDraw(const sp<const DisplayDevice>& hw, |
| const Region& /* clip */, bool useIdentityTransform) const |
| { |
| const State& s(getDrawingState()); |
| if (s.alpha>0) { |
| Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2); |
| computeGeometry(hw, mesh, useIdentityTransform); |
| RenderEngine& engine(mFlinger->getRenderEngine()); |
| engine.setupDimLayerBlending(s.alpha); |
| engine.drawMesh(mesh); |
| engine.disableBlending(); |
| } |
| } |
| |
| bool LayerDim::isVisible() const { |
| const Layer::State& s(getDrawingState()); |
| return !isHiddenByPolicy() && s.alpha; |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| |
| }; // namespace android |