FloatColor.h revision 8762e332e3797fb41929a1c6069207f4906ca329
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/Color.h" 20#include "utils/Macros.h" 21#include "utils/MathUtils.h" 22 23#include <stdint.h> 24 25namespace android { 26namespace uirenderer { 27 28struct FloatColor { 29 // "color" is a gamma-encoded sRGB color 30 // After calling this method, the color is stored as a pre-multiplied linear color 31 // if linear blending is enabled. Otherwise, the color is stored as a pre-multiplied 32 // gamma-encoded sRGB color 33 void set(uint32_t color) { 34 a = ((color >> 24) & 0xff) / 255.0f; 35 r = a * EOCF(((color >> 16) & 0xff) / 255.0f); 36 g = a * EOCF(((color >> 8) & 0xff) / 255.0f); 37 b = a * EOCF(((color ) & 0xff) / 255.0f); 38 } 39 40 // "color" is a gamma-encoded sRGB color 41 // After calling this method, the color is stored as a pre-multiplied linear color 42 // if linear blending is enabled. 43 void setSRGB(uint32_t color) { 44 a = ((color >> 24) & 0xff) / 255.0f; 45 r = a * EOCF_sRGB(((color >> 16) & 0xff) / 255.0f); 46 g = a * EOCF_sRGB(((color >> 8) & 0xff) / 255.0f); 47 b = a * EOCF_sRGB(((color ) & 0xff) / 255.0f); 48 } 49 50 bool isNotBlack() { 51 return a < 1.0f 52 || r > 0.0f 53 || g > 0.0f 54 || b > 0.0f; 55 } 56 57 bool operator==(const FloatColor& other) const { 58 return MathUtils::areEqual(r, other.r) 59 && MathUtils::areEqual(g, other.g) 60 && MathUtils::areEqual(b, other.b) 61 && MathUtils::areEqual(a, other.a); 62 } 63 64 bool operator!=(const FloatColor& other) const { 65 return !(*this == other); 66 } 67 68 float r; 69 float g; 70 float b; 71 float a; 72}; 73 74REQUIRE_COMPATIBLE_LAYOUT(FloatColor); 75 76} /* namespace uirenderer */ 77} /* namespace android */ 78 79#endif /* FLOATCOLOR_H */ 80