chromium/ui/color/color_mixer.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_COLOR_COLOR_MIXER_H_
#define UI_COLOR_COLOR_MIXER_H_

#include <map>
#include <set>

#include "base/component_export.h"
#include "base/functional/callback_forward.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/color/color_id.h"

namespace ui {

class ColorProvider;
class ColorRecipe;

// ColorMixer represents a single conceptual mapping of a set of inputs, via a
// collection of transforms, to a set of outputs.  Examples of plausible
// ColorMixers are "the UI element colors, as constructed from core color
// primitive values", "the way a set of high contrast colors overwrites default
// values", "the final output colors for all parts of a single UI area", or
// "a layer that enforces contrast minima on a variety of inputs".  ColorMixers
// are chained together into a pipeline by a ColorProvider, and thus may rely
// completely, partly, or not at all on the inputs and outputs of previous
// mixers in the pipeline.
class COMPONENT_EXPORT(COLOR) ColorMixer { … };

}  // namespace ui

#endif  // UI_COLOR_COLOR_MIXER_H_