baa253d00a
https://retrace.fedoraproject.org/faf/problems/bthash/?bth=2c9e4b335a4f17dea5e095f0a3e8f79aa40943cb Clearly it's a really bad idea to own these objects at shutdown, so instead use weak references, and also ensure that the CanvasUpdateRequester is not deleted before the event is dispatched just in case. Change-Id: Iee8a109fe5969b2a3345e0ef266aee014962ae57
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SD_SOURCE_UI_PRESENTER_CANVASUPDATEREQUESTER_HXX
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#define INCLUDED_SD_SOURCE_UI_PRESENTER_CANVASUPDATEREQUESTER_HXX
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#include <com/sun/star/rendering/XSpriteCanvas.hpp>
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#include <sal/types.h>
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#include <tools/link.hxx>
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#include <memory>
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struct ImplSVEvent;
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namespace sd { namespace presenter {
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/** Each UpdateRequester handles update requests (calls to
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XCanvas::updateScreen()) for one shared canvas (a canvas that has one or
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more PresenterCanvas wrappers). Multiple calls are collected and lead
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to a single call to updateScreen.
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*/
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class CanvasUpdateRequester
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: public std::enable_shared_from_this<CanvasUpdateRequester>
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{
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public:
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CanvasUpdateRequester(const CanvasUpdateRequester&) = delete;
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CanvasUpdateRequester& operator=(const CanvasUpdateRequester&) = delete;
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/** @return the Canvas UpdateRequester object for the given shared canvas.
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A new object is created when it does not already exist.
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*/
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static std::shared_ptr<CanvasUpdateRequester> Instance (
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const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
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void RequestUpdate (const bool bUpdateAll);
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private:
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explicit CanvasUpdateRequester (const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
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~CanvasUpdateRequester();
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class Deleter; friend class Deleter;
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/// keep instance alive waiting for event dispatch
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std::shared_ptr<CanvasUpdateRequester> m_pThis;
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css::uno::Reference<css::rendering::XSpriteCanvas> mxCanvas;
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ImplSVEvent * m_pUserEventId;
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bool mbUpdateFlag;
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DECL_LINK(Callback, void*, void);
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};
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} } // end of namespace ::sd::presenter
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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