1 /*
2 * Copyright (C) 2007 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 // #define LOG_NDEBUG 0
18 #undef LOG_TAG
19 #define LOG_TAG "LayerDim"
20
21 #include <stdlib.h>
22 #include <stdint.h>
23 #include <sys/types.h>
24
25 #include <utils/Errors.h>
26 #include <utils/Log.h>
27
28 #include <ui/GraphicBuffer.h>
29
30 #include "LayerDim.h"
31 #include "SurfaceFlinger.h"
32 #include "DisplayDevice.h"
33 #include "RenderEngine/RenderEngine.h"
34
35 namespace android {
36 // ---------------------------------------------------------------------------
37
LayerDim(SurfaceFlinger * flinger,const sp<Client> & client,const String8 & name,uint32_t w,uint32_t h,uint32_t flags)38 LayerDim::LayerDim(SurfaceFlinger* flinger, const sp<Client>& client,
39 const String8& name, uint32_t w, uint32_t h, uint32_t flags)
40 : Layer(flinger, client, name, w, h, flags) {
41 }
42
~LayerDim()43 LayerDim::~LayerDim() {
44 }
45
onDraw(const sp<const DisplayDevice> & hw,const Region &,bool useIdentityTransform) const46 void LayerDim::onDraw(const sp<const DisplayDevice>& hw,
47 const Region& /* clip */, bool useIdentityTransform) const
48 {
49 const State& s(getDrawingState());
50 if (s.alpha>0) {
51 Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2);
52 computeGeometry(hw, mesh, useIdentityTransform);
53 RenderEngine& engine(mFlinger->getRenderEngine());
54 engine.setupDimLayerBlending(s.alpha);
55 engine.drawMesh(mesh);
56 engine.disableBlending();
57 }
58 }
59
isVisible() const60 bool LayerDim::isVisible() const {
61 const Layer::State& s(getDrawingState());
62 return !(s.flags & layer_state_t::eLayerHidden) && s.alpha;
63 }
64
65
66 // ---------------------------------------------------------------------------
67
68 }; // namespace android
69