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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdlib.h>
#include "skia/ext/skia_utils.h"
#include "skia/include/SkColorPriv.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "SkBitmap.h"
TEST(SkiaUtils, SkColorToHSLRed) {
SkColor red = SkColorSetARGB(255, 255, 0, 0);
SkScalar hsl[3];
skia::SkColorToHSL(red, hsl);
EXPECT_EQ(hsl[0], 0);
EXPECT_EQ(hsl[1], 1);
EXPECT_EQ(hsl[2], 0.5);
}
TEST(SkiaUtils, SkColorToHSLGrey) {
SkColor red = SkColorSetARGB(255, 128, 128, 128);
SkScalar hsl[3];
skia::SkColorToHSL(red, hsl);
EXPECT_EQ(hsl[0], 0);
EXPECT_EQ(hsl[1], 0);
EXPECT_EQ(static_cast<int>(hsl[2] * 100),
static_cast<int>(0.5 * 100)); // Accurate to two decimal places.
}
TEST(SkiaUtils, HSLToSkColorWithAlpha) {
// Premultiplied alpha - this is full red.
SkColor red = SkColorSetARGB(128, 128, 0, 0);
SkScalar hsl[3] = {
SkDoubleToScalar(0),
SkDoubleToScalar(1),
SkDoubleToScalar(0.5),
};
SkColor result = skia::HSLToSKColor(128, hsl);
EXPECT_EQ(SkColorGetA(red), SkColorGetA(result));
EXPECT_EQ(SkColorGetR(red), SkColorGetR(result));
EXPECT_EQ(SkColorGetG(red), SkColorGetG(result));
EXPECT_EQ(SkColorGetB(red), SkColorGetB(result));
}
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