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// Copyright 2014 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.

#ifndef COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
#define COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_

#include <vector>

#include "components/favicon_base/favicon_types.h"
#include "ui/base/layout.h"

namespace gfx {
class Image;
}

namespace favicon_base {

// Returns the scale factors at which favicons should be fetched. This is
// different from ui::GetSupportedScaleFactors() because clients which do
// not support 1x should still fetch a favicon for 1x to push to sync. This
// guarantees that the clients receiving sync updates pushed by this client
// receive a favicon (potentially of the wrong scale factor) and do not show
// the default favicon.
std::vector<ui::ScaleFactor> GetFaviconScaleFactors();

// Sets the color space used for converting |image| to an NSImage to the
// system colorspace. This makes the favicon look the same in the browser UI
// as it does in the renderer.
void SetFaviconColorSpace(gfx::Image* image);

// Takes a vector of png-encoded frames, decodes them, and converts them to
// a favicon of size favicon_size (in DIPs) at the desired ui scale factors.
gfx::Image SelectFaviconFramesFromPNGs(
    const std::vector<favicon_base::FaviconRawBitmapResult>& png_data,
    const std::vector<ui::ScaleFactor>& scale_factors,
    int favicon_size);

}  // namspace favicon_base

#endif  // COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_