173 lines
4.6 KiB
C++
173 lines
4.6 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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#include <svx/sdr/animation/scheduler.hxx>
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#include <algorithm>
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#include <vector>
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// event class
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namespace sdr::animation
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{
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Event::Event() : mnTime(0)
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{
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}
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Event::~Event()
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{
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}
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void Event::SetTime(sal_uInt32 nNew)
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{
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if(mnTime != nNew)
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{
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mnTime = nNew;
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}
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}
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Scheduler::Scheduler()
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: Timer("sdr::animation::Scheduler"),
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mnTime(0),
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mnDeltaTime(0),
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mbIsPaused(false)
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{
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SetPriority(TaskPriority::POST_PAINT);
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}
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Scheduler::~Scheduler()
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{
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Stop();
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}
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void Scheduler::Invoke()
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{
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// stop timer and add time
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Stop();
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mnTime += mnDeltaTime;
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// execute events
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triggerEvents();
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// re-start or stop timer according to event list
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checkTimeout();
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}
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void Scheduler::triggerEvents()
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{
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if (mvEvents.empty())
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return;
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// copy events which need to be executed to a vector. Remove them from
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// the scheduler
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::std::vector< Event* > aToBeExecutedList;
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while(!mvEvents.empty() && mvEvents.front()->GetTime() <= mnTime)
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{
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Event* pNextEvent = mvEvents.front();
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mvEvents.erase(mvEvents.begin());
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aToBeExecutedList.push_back(pNextEvent);
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}
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// execute events from the vector
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for(auto& rpCandidate : aToBeExecutedList)
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{
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// trigger event. This may re-insert the event to the scheduler again
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rpCandidate->Trigger(mnTime);
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}
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}
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void Scheduler::checkTimeout()
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{
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// re-start or stop timer according to event list
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if(!IsPaused() && !mvEvents.empty())
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{
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mnDeltaTime = mvEvents.front()->GetTime() - mnTime;
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if(0 != mnDeltaTime)
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{
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SetTimeout(mnDeltaTime);
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Start();
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}
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}
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else
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{
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Stop();
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}
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}
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// #i38135#
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void Scheduler::SetTime(sal_uInt32 nTime)
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{
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// reset time
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Stop();
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mnTime = nTime;
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if (mvEvents.empty())
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return;
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// reset event time points
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for (auto & rEvent : mvEvents)
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{
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rEvent->SetTime(nTime);
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}
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if(!IsPaused())
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{
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// without delta time, init events by triggering them. This will invalidate
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// painted objects and add them to the scheduler again
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mnDeltaTime = 0;
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triggerEvents();
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checkTimeout();
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}
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}
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void Scheduler::InsertEvent(Event& rNew)
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{
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// insert maintaining time ordering
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auto it = std::find_if(mvEvents.begin(), mvEvents.end(),
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[&rNew](const Event* pEvent) { return rNew.GetTime() < pEvent->GetTime(); });
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mvEvents.insert(it, &rNew);
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checkTimeout();
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}
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void Scheduler::RemoveEvent(Event* pOld)
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{
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if(!mvEvents.empty())
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{
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std::erase(mvEvents, pOld);
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checkTimeout();
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}
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}
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void Scheduler::SetPaused(bool bNew)
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{
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if(bNew != mbIsPaused)
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{
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mbIsPaused = bNew;
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checkTimeout();
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}
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}
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} // end of namespace
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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