android: content::UIResourceProvider and content::UIResourceClientAndroid

content/browser/android/ui_resource_provider_impl.h

+// Copyright 2013 The Chromium Authors. All rights reserved.

[David Trainor- moved to gerrit, 2014/05/13 20:38:00]

2014 here and all files

[powei, 2014/05/13 23:38:03]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_ANDROID_UI_RESOURCE_PROVIDER_IMPL_H_
+#define CONTENT_BROWSER_ANDROID_UI_RESOURCE_PROVIDER_IMPL_H_
+
+#include <list>
+
+#include "base/containers/scoped_ptr_hash_map.h"
+#include "cc/resources/ui_resource_client.h"
+#include "content/public/browser/android/ui_resource_provider.h"
+
+class SkBitmap;
+class SkPixelRef;
+
+namespace cc {
+class LayerTreeHost;
+class UIResourceClient;
+}
+
+namespace content {
+
+class UIResourceListener;
+
+class UIResourceProviderImpl : public UIResourceProvider {
+ public:
+  UIResourceProviderImpl();
+
+  ~UIResourceProviderImpl();
+
+  virtual void SetLayerTreeHost(cc::LayerTreeHost* host) OVERRIDE;
+
+  virtual void AddListener(UIResourceListener* listener) OVERRIDE;
+
+  virtual void RemoveListener(UIResourceListener* listener) OVERRIDE;
+
+  // Generates a UIResource and returns a UIResourceId.  |is_transient|
+  // indicates whether or not to release the resource once the bitmap

[David Trainor- moved to gerrit, 2014/05/13 20:38:00]

We release the resource right after building it?  I'm a bit confused.  When do
we use transient uploads?

[powei, 2014/05/13 23:38:03]

See comment in cpp.

+  // has been uploaded. May return 0.
+  virtual cc::UIResourceId GenerateUIResource(const SkBitmap& bitmap,
+                                              bool is_transient) OVERRIDE;
+
+  // Generates an ETC1 compressed UIResource.  See above for |is_transient|.
+  // May return 0.
+  virtual cc::UIResourceId GenerateCompressedUIResource(
+      const skia::RefPtr<SkPixelRef>& pixel_ref,
+      bool is_transient) OVERRIDE;
+
+  // Same as above method but makes a copy of |pixels|.

[David Trainor- moved to gerrit, 2014/05/13 20:38:00]

:( copies so sad for large thumbnails...

+  // TODO(powei): should be removed once the thumbnail work is in place.
+  virtual cc::UIResourceId GenerateCompressedUIResource(
+      const gfx::Size& size,
+      void* pixels,
+      bool is_transient) OVERRIDE;
+
+  // Deletes a UIResource.  We allow deleting a resource that is not allocated.
+  virtual void DeleteUIResource(cc::UIResourceId resource_id) OVERRIDE;
+
+ private:
+  void UIResourcesAreInvalid();
+  void RecreateUIResources();
+
+  cc::UIResourceId GenerateUIResourceFromUIResourceBitmap(
+      const cc::UIResourceBitmap& bitmap,
+      bool is_transient);
+
+  typedef base::ScopedPtrHashMap<cc::UIResourceId, cc::UIResourceClient>
+      UIResourceMap;
+  typedef std::list<UIResourceListener*> UIResourceListenerList;
+
+  UIResourceMap ui_resource_map_;
+  UIResourceListenerList listeners_;
+
+  cc::LayerTreeHost* host_;
+
+  DISALLOW_COPY_AND_ASSIGN(UIResourceProviderImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_UI_RESOURCE_PROVIDER_IMPL_H_