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 #include <stdlib.h>
18 #include <stdint.h>
19 #include <sys/types.h>
20
21 #include <utils/Errors.h>
22 #include <utils/Log.h>
23
24 #include <ui/GraphicBuffer.h>
25
26 #include "LayerDim.h"
27 #include "SurfaceFlinger.h"
28 #include "DisplayDevice.h"
29 #include "RenderEngine/RenderEngine.h"
30
31 namespace android {
32 // ---------------------------------------------------------------------------
33
LayerDim(SurfaceFlinger * flinger,const sp<Client> & client,const String8 & name,uint32_t w,uint32_t h,uint32_t flags)34 LayerDim::LayerDim(SurfaceFlinger* flinger, const sp<Client>& client,
35 const String8& name, uint32_t w, uint32_t h, uint32_t flags)
36 : Layer(flinger, client, name, w, h, flags) {
37 }
38
~LayerDim()39 LayerDim::~LayerDim() {
40 }
41
onDraw(const sp<const DisplayDevice> & hw,const Region & clip) const42 void LayerDim::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const
43 {
44 const State& s(getDrawingState());
45 if (s.alpha>0) {
46 Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2);
47 computeGeometry(hw, mesh);
48 RenderEngine& engine(mFlinger->getRenderEngine());
49 engine.setupDimLayerBlending(s.alpha);
50 engine.drawMesh(mesh);
51 engine.disableBlending();
52 }
53 }
54
isVisible() const55 bool LayerDim::isVisible() const {
56 const Layer::State& s(getDrawingState());
57 return !(s.flags & layer_state_t::eLayerHidden) && s.alpha;
58 }
59
60
61 // ---------------------------------------------------------------------------
62
63 }; // namespace android
64