UI Resource Manager

cc/resources/scoped_ui_resource.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/resources/scoped_ui_resource.h"
+
+#include "base/basictypes.h"
+#include "base/bind.h"
+#include "cc/trees/layer_tree_host.h"
+
+namespace cc {
+
+scoped_ptr<ScopedUIResource> ScopedUIResource::Create(
+    LayerTreeHost* host,
+    scoped_refptr<UIResourceBitmap> bitmap) {
+  return make_scoped_ptr(new ScopedUIResource(host, bitmap));
+}
+
+ScopedUIResource::ScopedUIResource(LayerTreeHost* host,
+                                   scoped_refptr<UIResourceBitmap> bitmap)
+    : bitmap_(bitmap), host_(host) {
+  DCHECK(host_);
+  id_ = host_->CreateUIResource(this);
+}
+
+// User must make sure that host is still valid before this object goes out of
+// scope.
+ScopedUIResource::~ScopedUIResource() {
+  if (id_) {
+    DCHECK(host_);
+    host_->DeleteUIResource(id_);
+  }
+}
+
+scoped_refptr<UIResourceBitmap> ScopedUIResource::GetBitmap(
+    UIResourceId uid,
+    bool resource_lost) {
+  return bitmap_;
+}
+
+ScopedUIResource::ScopedUIResource() {}
+
+}  // namespace cc