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/bind.h"
#include "base/memory/ptr_util.h"
#include "cc/trees/layer_tree_host.h"

namespace cc {

std::unique_ptr<ScopedUIResource> ScopedUIResource::Create(
    LayerTreeHost* host,
    const UIResourceBitmap& bitmap) {
  return base::WrapUnique(new ScopedUIResource(host, bitmap));
}

ScopedUIResource::ScopedUIResource(LayerTreeHost* host,
                                   const 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_);
  }
}

UIResourceBitmap ScopedUIResource::GetBitmap(UIResourceId uid,
                                             bool resource_lost) {
  return bitmap_;
}

}  // namespace cc