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 3 // found in the LICENSE file. 4 5 #ifndef CC_RESOURCES_UI_RESOURCE_CLIENT_H_ 6 #define CC_RESOURCES_UI_RESOURCE_CLIENT_H_ 7 8 #include "base/basictypes.h" 9 #include "base/callback.h" 10 #include "base/memory/ref_counted.h" 11 #include "cc/base/cc_export.h" 12 13 namespace cc { 14 15 class UIResourceBitmap; 16 17 typedef int UIResourceId; 18 19 class CC_EXPORT UIResourceClient { 20 public: 21 // GetBitmap() will be called once soon after resource creation and then will 22 // be called afterwards whenever the GL context is lost, on the same thread 23 // that LayerTreeHost::CreateUIResource was called on. It is only safe to 24 // delete a UIResourceClient object after DeleteUIResource has been called for 25 // all IDs associated with it. A valid bitmap always must be returned but it 26 // doesn't need to be the same size or format as the original. 27 virtual UIResourceBitmap GetBitmap(UIResourceId uid, 28 bool resource_lost) = 0; 29 virtual ~UIResourceClient() {} 30 }; 31 32 } // namespace cc 33 34 #endif // CC_RESOURCES_UI_RESOURCE_CLIENT_H_ 35
