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      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 #ifndef ANDROID_LAYER_DIM_H
     18 #define ANDROID_LAYER_DIM_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <EGL/egl.h>
     24 #include <EGL/eglext.h>
     25 
     26 #include "LayerBase.h"
     27 
     28 // ---------------------------------------------------------------------------
     29 
     30 namespace android {
     31 
     32 class LayerDim : public LayerBaseClient
     33 {
     34     static bool sUseTexture;
     35     static GLuint sTexId;
     36     static EGLImageKHR sImage;
     37     static int32_t sWidth;
     38     static int32_t sHeight;
     39 public:
     40     static const uint32_t typeInfo;
     41     static const char* const typeID;
     42     virtual char const* getTypeID() const { return typeID; }
     43     virtual uint32_t getTypeInfo() const { return typeInfo; }
     44 
     45                 LayerDim(SurfaceFlinger* flinger, DisplayID display,
     46                         const sp<Client>& client, int32_t i);
     47         virtual ~LayerDim();
     48 
     49     virtual void onDraw(const Region& clip) const;
     50     virtual bool needsBlending() const  { return true; }
     51     virtual bool isSecure() const       { return false; }
     52 
     53     static void initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h);
     54 };
     55 
     56 // ---------------------------------------------------------------------------
     57 
     58 }; // namespace android
     59 
     60 #endif // ANDROID_LAYER_DIM_H
     61