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 25 namespace android { 26 namespace uirenderer { 27 28 struct 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 un-premultiplied linear color 42 // if linear blending is enabled. Otherwise, the color is stored as a un-premultiplied 43 // gamma-encoded sRGB color 44 void setUnPreMultiplied(uint32_t color) { 45 a = ((color >> 24) & 0xff) / 255.0f; 46 r = EOCF(((color >> 16) & 0xff) / 255.0f); 47 g = EOCF(((color >> 8) & 0xff) / 255.0f); 48 b = EOCF(((color)&0xff) / 255.0f); 49 } 50 51 bool isNotBlack() { return a < 1.0f || r > 0.0f || g > 0.0f || b > 0.0f; } 52 53 bool operator==(const FloatColor& other) const { 54 return MathUtils::areEqual(r, other.r) && MathUtils::areEqual(g, other.g) && 55 MathUtils::areEqual(b, other.b) && MathUtils::areEqual(a, other.a); 56 } 57 58 bool operator!=(const FloatColor& other) const { return !(*this == other); } 59 60 float r; 61 float g; 62 float b; 63 float a; 64 }; 65 66 REQUIRE_COMPATIBLE_LAYOUT(FloatColor); 67 68 } /* namespace uirenderer */ 69 } /* namespace android */ 70 71 #endif /* FLOATCOLOR_H */ 72
