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      1 /*
      2  * Copyright (C) 2015 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 #ifndef FLOATCOLOR_H
     17 #define FLOATCOLOR_H
     18 
     19 #include "utils/Macros.h"
     20 #include "utils/MathUtils.h"
     21 
     22 #include <stdint.h>
     23 
     24 namespace android {
     25 namespace uirenderer {
     26 
     27 struct FloatColor {
     28     void set(uint32_t color) {
     29         a = ((color >> 24) & 0xff) / 255.0f;
     30         r = a * ((color >> 16) & 0xff) / 255.0f;
     31         g = a * ((color >>  8) & 0xff) / 255.0f;
     32         b = a * ((color      ) & 0xff) / 255.0f;
     33     }
     34 
     35     bool isNotBlack() {
     36         return a < 1.0f
     37                 || r > 0.0f
     38                 || g > 0.0f
     39                 || b > 0.0f;
     40     }
     41 
     42     bool operator==(const FloatColor& other) const {
     43         return MathUtils::areEqual(r, other.r)
     44                 && MathUtils::areEqual(g, other.g)
     45                 && MathUtils::areEqual(b, other.b)
     46                 && MathUtils::areEqual(a, other.a);
     47     }
     48 
     49     bool operator!=(const FloatColor& other) const {
     50         return !(*this == other);
     51     }
     52 
     53     float r;
     54     float g;
     55     float b;
     56     float a;
     57 };
     58 
     59 REQUIRE_COMPATIBLE_LAYOUT(FloatColor);
     60 
     61 } /* namespace uirenderer */
     62 } /* namespace android */
     63 
     64 #endif /* FLOATCOLOR_H */
     65