Supporting high dpi favicons in Instant Extended.

chrome/browser/favicon/favicon_types.h

-// Copyright 2013 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 CHROME_BROWSER_FAVICON_FAVICON_TYPES_H_
-#define CHROME_BROWSER_FAVICON_FAVICON_TYPES_H_
-
-#include "base/memory/ref_counted_memory.h"
-#include "ui/gfx/image/image.h"
-#include "ui/gfx/size.h"
-#include "url/gurl.h"
-
-namespace chrome {
-
-typedef int64 FaviconID;
-
-// Defines the icon types. They are also stored in icon_type field of favicons
-// table.
-// The values of the IconTypes are used to select the priority in which favicon
-// data is returned in HistoryBackend and ThumbnailDatabase. Data for the
-// largest IconType takes priority if data for multiple IconTypes is available.
-enum IconType {
-  INVALID_ICON = 0x0,
-  FAVICON = 1 << 0,
-  TOUCH_ICON = 1 << 1,
-  TOUCH_PRECOMPOSED_ICON = 1 << 2
-};
-
-// Defines a gfx::Image of size desired_size_in_dip composed of image
-// representations for each of the desired scale factors.
-struct FaviconImageResult {
-  FaviconImageResult();
-  ~FaviconImageResult();
-
-  // The resulting image.
-  gfx::Image image;
-
-  // The URL of the favicon which contains all of the image representations of
-  // |image|.
-  // TODO(pkotwicz): Return multiple |icon_urls| to allow |image| to have
-  // representations from several favicons once content::FaviconStatus supports
-  // multiple URLs.
-  GURL icon_url;
-};
-
-// Defines a favicon bitmap which best matches the desired DIP size and one of
-// the desired scale factors.
-struct FaviconBitmapResult {
-  FaviconBitmapResult();
-  ~FaviconBitmapResult();
-
-  // Returns true if |bitmap_data| contains a valid bitmap.
-  bool is_valid() const { return bitmap_data.get() && bitmap_data->size(); }
-
-  // Indicates whether |bitmap_data| is expired.
-  bool expired;
-
-  // The bits of the bitmap.
-  scoped_refptr<base::RefCountedMemory> bitmap_data;
-
-  // The pixel dimensions of |bitmap_data|.
-  gfx::Size pixel_size;
-
-  // The URL of the containing favicon.
-  GURL icon_url;
-
-  // The icon type of the containing favicon.
-  IconType icon_type;
-};
-
-// Define type with same structure as FaviconBitmapResult for passing data to
-// HistoryBackend::SetFavicons().
-typedef FaviconBitmapResult FaviconBitmapData;
-
-}  // namespace chrome
-
-#endif  // CHROME_BROWSER_FAVICON_FAVICON_TYPES_H_