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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/style/color_util.h"
#include "ash/public/cpp/wallpaper/wallpaper_types.h"
#include "ash/shell.h"
#include "ash/test/ash_test_base.h"
#include "ash/wallpaper/wallpaper_controller_impl.h"
#include "ash/wallpaper/wallpaper_controller_test_api.h"
#include "ash/wallpaper/wallpaper_utils/wallpaper_calculated_colors.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/test/sk_color_eq.h"
namespace ash {
class ColorUtilTest : public AshTestBase {
public:
ColorUtilTest() = default;
ColorUtilTest(const ColorUtilTest&) = delete;
ColorUtilTest& operator=(const ColorUtilTest&) = delete;
void SetUp() override {
AshTestBase::SetUp();
wallpaper_controller_test_api_ =
std::make_unique<WallpaperControllerTestApi>(
Shell::Get()->wallpaper_controller());
}
WallpaperControllerTestApi* test_api() {
return wallpaper_controller_test_api_.get();
}
private:
std::unique_ptr<WallpaperControllerTestApi> wallpaper_controller_test_api_;
};
TEST_F(ColorUtilTest, MixesWithWhiteInLightMode) {
// Tuple of k_mean_color, expected output color after masking with white.
std::vector<std::tuple<SkColor, SkColor>> cases = {
{SK_ColorRED, SkColorSetARGB(0xFF, 0xFF, 0xE6, 0xE6)},
{SK_ColorGREEN, SkColorSetARGB(0xFF, 0xE6, 0xFF, 0xE6)},
{SK_ColorMAGENTA, SkColorSetARGB(0xFF, 0xFF, 0xE6, 0xFF)},
};
for (const auto& [k_mean_color, expected_color] : cases) {
SkColor result_color = ColorUtil::AdjustKMeansColor(k_mean_color, false);
EXPECT_SKCOLOR_EQ(expected_color, result_color);
}
}
TEST_F(ColorUtilTest, ClampsMaxLightnessInLightMode) {
// Tuple of k_mean_color, expected output color after darkening and masking
// with white.
std::vector<std::tuple<SkColor, SkColor>> cases = {
// Pure white is shifted to gray.
{SK_ColorWHITE, SkColorSetARGB(0xFF, 0xF8, 0xF8, 0xF8)},
// #B3B3B3 should result in the same output color as pure white.
{
SkColorSetARGB(0xFF, 0xB3, 0xB3, 0xB3),
SkColorSetARGB(0xFF, 0xF8, 0xF8, 0xF8),
},
// Slightly darker than last case results in a different output color than
// previous two.
{
SkColorSetARGB(0xFF, 0xB2, 0xB2, 0xB2),
SkColorSetARGB(0xFF, 0xF7, 0xF7, 0xF7),
},
// Light pink retains red hue.
{
SkColorSetARGB(0xFF, 0xFF, 0xEE, 0xEE),
SkColorSetARGB(0xFF, 0xFF, 0xF0, 0xF0),
},
};
for (const auto& [k_mean_color, expected_color] : cases) {
SkColor result_color = ColorUtil::AdjustKMeansColor(k_mean_color, false);
EXPECT_SKCOLOR_EQ(expected_color, result_color);
}
}
TEST_F(ColorUtilTest, MixesWithBlackInDarkMode) {
// Tuple of k_mean_color, expected output color after masking with black.
std::vector<std::tuple<SkColor, SkColor>> cases = {
{SK_ColorRED, SkColorSetARGB(0xFF, 0x5A, 0x00, 0x00)},
{SK_ColorGREEN, SkColorSetARGB(0xFF, 0x00, 0x5A, 0x00)},
{SK_ColorMAGENTA, SkColorSetARGB(0xFF, 0x5A, 0x00, 0x5A)},
};
for (const auto& [k_mean_color, expected_color] : cases) {
SkColor result_color = ColorUtil::AdjustKMeansColor(k_mean_color, true);
EXPECT_SKCOLOR_EQ(expected_color, result_color);
}
}
TEST_F(ColorUtilTest, ClampsMaxDarknessInDarkMode) {
// Tuple of k_mean_color, expected output color after lightening and masking
// with black.
std::vector<std::tuple<SkColor, SkColor>> cases = {
// Pure black is shifted to dark gray.
{SK_ColorBLACK, SkColorSetARGB(0xFF, 0x1B, 0x1B, 0x1B)},
// #4D4D4D should result in the same output color as black.
{
SkColorSetARGB(0xFF, 0x4D, 0x4D, 0x4D),
SkColorSetARGB(0xFF, 0x1B, 0x1B, 0x1B),
},
// Slightly lighter than last case results in a different output color
// from previous two, as it is light enough to skip lightness shift.
{
SkColorSetARGB(0xFF, 0x4F, 0x4F, 0x4F),
SkColorSetARGB(0xFF, 0x1C, 0x1C, 0x1C),
},
// Dark red retains red hue.
{
SkColorSetARGB(0xFF, 0x44, 0x00, 0x00),
SkColorSetARGB(0xFF, 0x36, 0x00, 0x00),
},
};
for (const auto& [k_mean_color, expected_color] : cases) {
SkColor result_color = ColorUtil::AdjustKMeansColor(k_mean_color, true);
EXPECT_SKCOLOR_EQ(expected_color, result_color);
}
}
} // namespace ash
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