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