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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <com/sun/star/uno/Reference.hxx>
#include <tools/link.hxx>
#include <memory>
namespace com::sun::star::rendering
{
class XSpriteCanvas;
}
struct ImplSVEvent;
namespace sd::presenter
{
/** Each UpdateRequester handles update requests (calls to
XCanvas::updateScreen()) for one shared canvas (a canvas that has one or
more PresenterCanvas wrappers). Multiple calls are collected and lead
to a single call to updateScreen.
*/
class CanvasUpdateRequester : public std::enable_shared_from_this<CanvasUpdateRequester>
{
public:
CanvasUpdateRequester(const CanvasUpdateRequester&) = delete;
CanvasUpdateRequester& operator=(const CanvasUpdateRequester&) = delete;
/** @return the Canvas UpdateRequester object for the given shared canvas.
A new object is created when it does not already exist.
*/
static std::shared_ptr<CanvasUpdateRequester>
Instance(const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
void RequestUpdate(const bool bUpdateAll);
private:
explicit CanvasUpdateRequester(
const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
~CanvasUpdateRequester();
class Deleter;
friend class Deleter;
/// keep instance alive waiting for event dispatch
std::shared_ptr<CanvasUpdateRequester> m_pThis;
css::uno::Reference<css::rendering::XSpriteCanvas> mxCanvas;
ImplSVEvent* m_pUserEventId;
bool mbUpdateFlag;
DECL_LINK(Callback, void*, void);
};
} // end of namespace ::sd::presenter
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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