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Side by Side Diff: content/browser/renderer_host/backing_store_manager.h

Issue 9600036: Move Render(View|Widget)Host and associated classes to content namespace. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Respond to review comments. Created 8 years, 9 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_ 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_
7 #pragma once 7 #pragma once
8 8
9 #include <vector> 9 #include <vector>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "base/callback_forward.h" 12 #include "base/callback_forward.h"
13 #include "base/process.h" 13 #include "base/process.h"
14 #include "ui/gfx/rect.h" 14 #include "ui/gfx/rect.h"
15 #include "ui/gfx/size.h" 15 #include "ui/gfx/size.h"
16 #include "ui/gfx/surface/transport_dib.h" 16 #include "ui/gfx/surface/transport_dib.h"
17 17
18 class BackingStore; 18 class BackingStore;
19
20 namespace content {
19 class RenderWidgetHost; 21 class RenderWidgetHost;
22 }
20 23
21 // This class manages backing stores in the browsr. Every RenderWidgetHost is 24 // This class manages backing stores in the browsr. Every RenderWidgetHost is
22 // associated with a backing store which it requests from this class. The 25 // associated with a backing store which it requests from this class. The
23 // hosts don't maintain any references to the backing stores. These backing 26 // hosts don't maintain any references to the backing stores. These backing
24 // stores are maintained in a cache which can be trimmed as needed. 27 // stores are maintained in a cache which can be trimmed as needed.
25 class BackingStoreManager { 28 class BackingStoreManager {
26 public: 29 public:
27 // Returns a backing store which matches the desired dimensions. 30 // Returns a backing store which matches the desired dimensions.
28 // 31 //
29 // backing_store_rect 32 // backing_store_rect
30 // The desired backing store dimensions. 33 // The desired backing store dimensions.
31 // Returns a pointer to the backing store on success, NULL on failure. 34 // Returns a pointer to the backing store on success, NULL on failure.
32 static BackingStore* GetBackingStore(RenderWidgetHost* host, 35 static BackingStore* GetBackingStore(content::RenderWidgetHost* host,
33 const gfx::Size& desired_size); 36 const gfx::Size& desired_size);
34 37
35 // Makes a backing store which is fully ready for consumption, i.e. the 38 // Makes a backing store which is fully ready for consumption, i.e. the
36 // bitmap from the renderer has been copied into the backing store. 39 // bitmap from the renderer has been copied into the backing store.
37 // 40 //
38 // backing_store_size 41 // backing_store_size
39 // The desired backing store dimensions. 42 // The desired backing store dimensions.
40 // bitmap_section 43 // bitmap_section
41 // The bitmap section from the renderer. 44 // The bitmap section from the renderer.
42 // bitmap_rect 45 // bitmap_rect
43 // The rect to be painted into the backing store 46 // The rect to be painted into the backing store
44 // needs_full_paint 47 // needs_full_paint
45 // Set if we need to send out a request to paint the view 48 // Set if we need to send out a request to paint the view
46 // to the renderer. 49 // to the renderer.
47 static void PrepareBackingStore( 50 static void PrepareBackingStore(
48 RenderWidgetHost* host, 51 content::RenderWidgetHost* host,
49 const gfx::Size& backing_store_size, 52 const gfx::Size& backing_store_size,
50 TransportDIB::Id bitmap, 53 TransportDIB::Id bitmap,
51 const gfx::Rect& bitmap_rect, 54 const gfx::Rect& bitmap_rect,
52 const std::vector<gfx::Rect>& copy_rects, 55 const std::vector<gfx::Rect>& copy_rects,
53 const base::Closure& completion_callback, 56 const base::Closure& completion_callback,
54 bool* needs_full_paint, 57 bool* needs_full_paint,
55 bool* scheduled_completion_callback); 58 bool* scheduled_completion_callback);
56 59
57 // Returns a matching backing store for the host. 60 // Returns a matching backing store for the host.
58 // Returns NULL if we fail to find one. 61 // Returns NULL if we fail to find one.
59 static BackingStore* Lookup(RenderWidgetHost* host); 62 static BackingStore* Lookup(content::RenderWidgetHost* host);
60 63
61 // Removes the backing store for the host. 64 // Removes the backing store for the host.
62 static void RemoveBackingStore(RenderWidgetHost* host); 65 static void RemoveBackingStore(content::RenderWidgetHost* host);
63 66
64 // Removes all backing stores. 67 // Removes all backing stores.
65 static void RemoveAllBackingStores(); 68 static void RemoveAllBackingStores();
66 69
67 // Current size in bytes of the backing store cache. 70 // Current size in bytes of the backing store cache.
68 static size_t MemorySize(); 71 static size_t MemorySize();
69 72
70 private: 73 private:
71 // Not intended for instantiation. 74 // Not intended for instantiation.
72 BackingStoreManager() {} 75 BackingStoreManager() {}
73 76
74 DISALLOW_COPY_AND_ASSIGN(BackingStoreManager); 77 DISALLOW_COPY_AND_ASSIGN(BackingStoreManager);
75 }; 78 };
76 79
77 #endif // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_ 80 #endif // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_MANAGER_H_
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