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// Copyright 2016 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 <unordered_map>
#include <vector>
#include "base/macros.h"
#include "cc/base/cc_export.h"
#include "cc/resources/scoped_ui_resource.h"
#include "cc/resources/ui_resource_request.h"
namespace cc {
class UIResourceRequest;
class CC_EXPORT UIResourceManager {
virtual ~UIResourceManager();
// CreateUIResource creates a resource given a bitmap. The bitmap is
// generated via an interface function, which is called when initializing the
// resource and when the resource has been lost (due to lost context). The
// parameter of the interface is a single boolean, which indicates whether the
// resource has been lost or not. CreateUIResource returns an Id of the
// resource, which is always positive.
virtual UIResourceId CreateUIResource(UIResourceClient* client);
// Deletes a UI resource. May safely be called more than once.
virtual void DeleteUIResource(UIResourceId id);
virtual gfx::Size GetUIResourceSize(UIResourceId id) const;
// Methods meant to be used only internally in cc ------------
// The current UIResourceRequestQueue is moved to the caller.
std::vector<UIResourceRequest> TakeUIResourcesRequests();
// Put the recreation of all UI resources into the resource queue after they
// were evicted on the impl thread.
void RecreateUIResources();
struct UIResourceClientData {
UIResourceClient* client;
gfx::Size size;
using UIResourceClientMap =
std::unordered_map<UIResourceId, UIResourceClientData>;
UIResourceClientMap ui_resource_client_map_;
int next_ui_resource_id_;
using UIResourceRequestQueue = std::vector<UIResourceRequest>;
UIResourceRequestQueue ui_resource_request_queue_;
} // namespace cc