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Diffstat (limited to '')
-rw-r--r-- | sd/source/ui/presenter/CanvasUpdateRequester.hxx | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/sd/source/ui/presenter/CanvasUpdateRequester.hxx b/sd/source/ui/presenter/CanvasUpdateRequester.hxx new file mode 100644 index 000000000..ebb582ead --- /dev/null +++ b/sd/source/ui/presenter/CanvasUpdateRequester.hxx @@ -0,0 +1,72 @@ +/* -*- 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: */ |