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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 CC_RESOURCES_UI_RESOURCE_CLIENT_H_ | 5 #ifndef CC_RESOURCES_UI_RESOURCE_CLIENT_H_ |
6 #define CC_RESOURCES_UI_RESOURCE_CLIENT_H_ | 6 #define CC_RESOURCES_UI_RESOURCE_CLIENT_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "cc/base/cc_export.h" | 10 #include "cc/cc_export.h" |
11 | 11 |
12 namespace cc { | 12 namespace cc { |
13 | 13 |
14 class UIResourceBitmap; | 14 class UIResourceBitmap; |
15 | 15 |
16 typedef int UIResourceId; | 16 typedef int UIResourceId; |
17 | 17 |
18 class CC_EXPORT UIResourceClient { | 18 class CC_EXPORT UIResourceClient { |
19 public: | 19 public: |
20 // GetBitmap() will be called once soon after resource creation and then will | 20 // GetBitmap() will be called once soon after resource creation and then will |
21 // be called afterwards whenever the GL context is lost, on the same thread | 21 // be called afterwards whenever the GL context is lost, on the same thread |
22 // that LayerTreeHost::CreateUIResource was called on. It is only safe to | 22 // that LayerTreeHost::CreateUIResource was called on. It is only safe to |
23 // delete a UIResourceClient object after DeleteUIResource has been called for | 23 // delete a UIResourceClient object after DeleteUIResource has been called for |
24 // all IDs associated with it. A valid bitmap always must be returned but it | 24 // all IDs associated with it. A valid bitmap always must be returned but it |
25 // doesn't need to be the same size or format as the original. | 25 // doesn't need to be the same size or format as the original. |
26 // The bitmap's dimensions must *not* exceed the maximum texture size | 26 // The bitmap's dimensions must *not* exceed the maximum texture size |
27 // supported by the GPU. For resources that are not bigger than the viewport | 27 // supported by the GPU. For resources that are not bigger than the viewport |
28 // this should not be a problem, but for much larger resources, the caller is | 28 // this should not be a problem, but for much larger resources, the caller is |
29 // responsible for ensuring this. | 29 // responsible for ensuring this. |
30 virtual UIResourceBitmap GetBitmap(UIResourceId uid, | 30 virtual UIResourceBitmap GetBitmap(UIResourceId uid, |
31 bool resource_lost) = 0; | 31 bool resource_lost) = 0; |
32 virtual ~UIResourceClient() {} | 32 virtual ~UIResourceClient() {} |
33 }; | 33 }; |
34 | 34 |
35 } // namespace cc | 35 } // namespace cc |
36 | 36 |
37 #endif // CC_RESOURCES_UI_RESOURCE_CLIENT_H_ | 37 #endif // CC_RESOURCES_UI_RESOURCE_CLIENT_H_ |
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