File: icon_standardizer.h

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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_APPS_ICON_STANDARDIZER_H_
#define CHROME_BROWSER_APPS_ICON_STANDARDIZER_H_

#include <optional>

namespace gfx {
class ImageSkia;
class ImageSkiaRep;
}  // namespace gfx

namespace apps {
// Takes an icon image and returns a standardized version of that icon. This
// function consists of the following steps:
// 1. Check if the original icon is already circle shaped. If it is, then
//    return the original input icon.
// 2. Find the scale required to resize and fit the original icon inside of
//    a new circle background.
// 3. Scale down the icon and draw it over a background circle. Return the newly
//    generated icon as the standard icon.
gfx::ImageSkia CreateStandardIconImage(const gfx::ImageSkia& image);

// The same as CreateStandardIconImage but for ImageSkiaRep.
// Returns nullopt if base_rep was not modified.
std::optional<gfx::ImageSkiaRep> CreateStandardIconImageRep(
    const gfx::ImageSkiaRep& base_rep,
    float scale);
}  // namespace apps

#endif  // CHROME_BROWSER_APPS_ICON_STANDARDIZER_H_