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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLOATCOLOR_H
#define FLOATCOLOR_H
#include "utils/Color.h"
#include "utils/Macros.h"
#include "utils/MathUtils.h"
#include <stdint.h>
namespace android {
namespace uirenderer {
struct FloatColor {
// "color" is a gamma-encoded sRGB color
// After calling this method, the color is stored as a pre-multiplied linear color
// if linear blending is enabled. Otherwise, the color is stored as a pre-multiplied
// gamma-encoded sRGB color
void set(uint32_t color) {
a = ((color >> 24) & 0xff) / 255.0f;
r = a * EOCF(((color >> 16) & 0xff) / 255.0f);
g = a * EOCF(((color >> 8) & 0xff) / 255.0f);
b = a * EOCF(((color ) & 0xff) / 255.0f);
}
// "color" is a gamma-encoded sRGB color
// After calling this method, the color is stored as a un-premultiplied linear color
// if linear blending is enabled. Otherwise, the color is stored as a un-premultiplied
// gamma-encoded sRGB color
void setUnPreMultiplied(uint32_t color) {
a = ((color >> 24) & 0xff) / 255.0f;
r = EOCF(((color >> 16) & 0xff) / 255.0f);
g = EOCF(((color >> 8) & 0xff) / 255.0f);
b = EOCF(((color ) & 0xff) / 255.0f);
}
bool isNotBlack() {
return a < 1.0f
|| r > 0.0f
|| g > 0.0f
|| b > 0.0f;
}
bool operator==(const FloatColor& other) const {
return MathUtils::areEqual(r, other.r)
&& MathUtils::areEqual(g, other.g)
&& MathUtils::areEqual(b, other.b)
&& MathUtils::areEqual(a, other.a);
}
bool operator!=(const FloatColor& other) const {
return !(*this == other);
}
float r;
float g;
float b;
float a;
};
REQUIRE_COMPATIBLE_LAYOUT(FloatColor);
} /* namespace uirenderer */
} /* namespace android */
#endif /* FLOATCOLOR_H */
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