src/chrome/browser/android/thumbnail/thumbnail.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 CHROME_BROWSER_ANDROID_THUMBNAIL_THUMBNAIL_H_
   6 #define CHROME_BROWSER_ANDROID_THUMBNAIL_THUMBNAIL_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/time/time.h"
  10 #include "cc/resources/ui_resource_bitmap.h"
  11 #include "cc/resources/ui_resource_client.h"
  12 #include "content/public/browser/android/ui_resource_client_android.h"
  13 #include "ui/gfx/geometry/size.h"
  14
  15 namespace base {
  16 class Time;
  17 }
  18
  19 namespace content {
  20 class UIResourceProvider;
  21 }
  22
  23 namespace gfx {
  24 class Size;
  25 }
  26
  27 typedef int TabId;
  28
  29 class Thumbnail;
  30
  31 class ThumbnailDelegate {
  32  public:
  33   virtual void InvalidateCachedThumbnail(Thumbnail* thumbnail) = 0;
  34   virtual ~ThumbnailDelegate() {}
  35 };
  36
  37 class Thumbnail : public content::UIResourceClientAndroid {
  38  public:
  39   static scoped_ptr<Thumbnail> Create(
  40       TabId tab_id,
  41       const base::Time& time_stamp,
  42       float scale,
  43       content::UIResourceProvider* ui_resource_provider,
  44       ThumbnailDelegate* thumbnail_delegate);
  45   virtual ~Thumbnail();
  46
  47   TabId tab_id() const { return tab_id_; }
  48   base::Time time_stamp() const { return time_stamp_; }
  49   float scale() const { return scale_; }
  50   cc::UIResourceId ui_resource_id() const { return ui_resource_id_; }
  51   const gfx::SizeF& scaled_content_size() const { return scaled_content_size_; }
  52   const gfx::SizeF& scaled_data_size() const { return scaled_data_size_; }
  53
  54   void SetBitmap(const SkBitmap& bitmap);
  55   void SetCompressedBitmap(skia::RefPtr<SkPixelRef> compressed_bitmap,
  56                            const gfx::Size& content_size);
  57   void CreateUIResource();
  58
  59   // content::UIResourceClient implementation.
  60   virtual cc::UIResourceBitmap GetBitmap(cc::UIResourceId uid,
  61                                          bool resource_lost) override;
  62
  63   // content::UIResourceClientAndroid implementation.
  64   virtual void UIResourceIsInvalid() override;
  65
  66  protected:
  67   Thumbnail(TabId tab_id,
  68             const base::Time& time_stamp,
  69             float scale,
  70             content::UIResourceProvider* ui_resource_provider,
  71             ThumbnailDelegate* thumbnail_delegate);
  72
  73   void ClearUIResourceId();
  74
  75   TabId tab_id_;
  76   base::Time time_stamp_;
  77   float scale_;
  78
  79   gfx::SizeF scaled_content_size_;
  80   gfx::SizeF scaled_data_size_;
  81
  82   cc::UIResourceBitmap bitmap_;
  83   cc::UIResourceId ui_resource_id_;
  84
  85   bool retrieved_;
  86
  87   content::UIResourceProvider* ui_resource_provider_;
  88   ThumbnailDelegate* thumbnail_delegate_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(Thumbnail);
  91 };
  92
  93 #endif  // CHROME_BROWSER_ANDROID_THUMBNAIL_THUMBNAIL_H_