chromium/third_party/blink/renderer/core/animation/interpolable_color.h

// 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.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLABLE_COLOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLABLE_COLOR_H_

#include <memory>

#include "base/notreached.h"
#include "third_party/blink/renderer/core/animation/base_interpolable_color.h"
#include "third_party/blink/renderer/core/animation/interpolable_value.h"
#include "third_party/blink/renderer/core/css_value_keywords.h"
#include "third_party/blink/renderer/platform/graphics/color.h"

namespace ui {
class ColorProvider;
}  // namespace ui

namespace blink {

// InterpolableColors are created and manipulated by CSSColorInterpolationType.
// They store the three params and alpha from a blink::Color for interpolation,
// along with its color space. It is important that two colors are in the same
// color space when interpolating or the results will be incorrect. This is
// verified and adjusted in CSSColorInterpolationType::MaybeMergeSingles.
class CORE_EXPORT InterpolableColor : public BaseInterpolableColor { … };

template <>
struct DowncastTraits<InterpolableColor> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLABLE_COLOR_H_