components/favicon_base/favicon_util.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
   6 #define COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
   7
   8 #include <vector>
   9
  10 #include "components/favicon_base/favicon_types.h"
  11
  12 namespace gfx {
  13 class Image;
  14 }
  15
  16 namespace favicon_base {
  17
  18 // Returns the scales at which favicons should be fetched. This is
  19 // different from ui::GetSupportedScaleFactors() because clients which do
  20 // not support 1x should still fetch a favicon for 1x to push to sync. This
  21 // guarantees that the clients receiving sync updates pushed by this client
  22 // receive a favicon (potentially of the wrong scale factor) and do not show
  23 // the default favicon.
  24 std::vector<float> GetFaviconScales();
  25
  26 // Sets the color space used for converting |image| to an NSImage to the
  27 // system colorspace. This makes the favicon look the same in the browser UI
  28 // as it does in the renderer.
  29 void SetFaviconColorSpace(gfx::Image* image);
  30
  31 // Takes a vector of PNG-encoded frames, and converts it to a gfx::Image of
  32 // size |favicon_size| in DIPS. The result gfx::Image has a gfx::ImageSkia with
  33 // gfx::ImageSkiaReps for each |favicon_scales|.
  34 gfx::Image SelectFaviconFramesFromPNGs(
  35     const std::vector<favicon_base::FaviconRawBitmapResult>& png_data,
  36     const std::vector<float>& favicon_scales,
  37     int favicon_size);
  38
  39 }  // namspace favicon_base
  40
  41 #endif  // COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_