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/*
Copyright (C) 2003 KSVG Team
This file is part of the KDE project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "KSVGCanvas.h"
#include "CanvasItem.h"
#include "SVGShapeImpl.h"
#include "SVGDocumentImpl.h"
#include "SVGTimeScheduler.moc"
using namespace KSVG;
SVGTimer::SVGTimer(QObject *scheduler, unsigned int ms, bool singleShot)
{
m_ms = ms;
m_singleShot = singleShot;
m_timer = new QTimer(scheduler);
}
SVGTimer::~SVGTimer()
{
delete m_timer;
}
bool SVGTimer::operator==(const QTimer *timer)
{
return (m_timer == timer);
}
const QTimer *SVGTimer::qtimer() const
{
return m_timer;
}
void SVGTimer::start(QObject *receiver, const char *member)
{
QObject::connect(m_timer, SIGNAL(timeout()), receiver, member);
m_timer->start(m_ms, m_singleShot);
}
void SVGTimer::stop()
{
m_timer->stop();
}
bool SVGTimer::isActive() const
{
return m_timer->isActive();
}
unsigned int SVGTimer::ms() const
{
return m_ms;
}
bool SVGTimer::singleShot() const
{
return m_singleShot;
}
void SVGTimer::notifyAll()
{
if(m_notifyList.isEmpty())
return;
QValueList<SVGElementImpl *> elements;
for(unsigned int i = m_notifyList.count();i > 0; i--)
{
SVGElementImpl *element = m_notifyList[i - 1];
if(!element)
continue;
SVGAnimationElementImpl *animation = dynamic_cast<SVGAnimationElementImpl *>(element);
if(animation)
{
animation->handleTimerEvent();
SVGElementImpl *target = animation->targetElement();
if(!elements.contains(target))
elements.append(target);
}
}
// Optimized update logic (to avoid 4 updates, on the same element)
QValueList<SVGElementImpl *>::iterator it2;
for(it2 = elements.begin(); it2 != elements.end(); ++it2)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(*it2);
if(shape && shape->item())
shape->item()->update(UPDATE_TRANSFORM);
}
}
void SVGTimer::addNotify(SVGElementImpl *element)
{
m_notifyList.append(element);
}
void SVGTimer::removeNotify(SVGElementImpl *element)
{
m_notifyList.remove(element);
if(m_notifyList.isEmpty())
stop();
}
const unsigned int SVGTimeScheduler::staticTimerInterval = 15; // milliseconds
SVGTimeScheduler::SVGTimeScheduler(SVGDocumentImpl *doc) : QObject(), m_doc(doc)
{
// Create static interval timers but don't start it yet!
m_intervalTimer = new SVGTimer(this, staticTimerInterval, false);
m_creationTime.start();
}
SVGTimeScheduler::~SVGTimeScheduler()
{
// Usually singleShot timers cleanup themselves, after usage
SVGTimerList::iterator it;
for(it = m_timerList.begin(); it != m_timerList.end(); ++it)
{
SVGTimer *svgTimer = *it;
delete svgTimer;
}
delete m_intervalTimer;
}
void SVGTimeScheduler::addTimer(SVGElementImpl *element, unsigned int ms)
{
SVGTimer *svgTimer = new SVGTimer(this, ms, true);
svgTimer->addNotify(element);
m_timerList.append(svgTimer);
}
void SVGTimeScheduler::connectIntervalTimer(SVGElementImpl *element)
{
m_intervalTimer->addNotify(element);
}
void SVGTimeScheduler::disconnectIntervalTimer(SVGElementImpl *element)
{
m_intervalTimer->removeNotify(element);
}
void SVGTimeScheduler::startAnimations()
{
SVGTimerList::iterator it;
for(it = m_timerList.begin(); it != m_timerList.end(); ++it)
{
SVGTimer *svgTimer = *it;
if(svgTimer && !svgTimer->isActive())
svgTimer->start(this, SLOT(slotTimerNotify()));
}
}
void SVGTimeScheduler::toggleAnimations()
{
if(m_intervalTimer->isActive())
m_intervalTimer->stop();
else
m_intervalTimer->start(this, SLOT(slotTimerNotify()));
}
bool SVGTimeScheduler::animationsPaused() const
{
return !m_intervalTimer->isActive();
}
void SVGTimeScheduler::slotTimerNotify()
{
QTimer *senderTimer = const_cast<QTimer *>(static_cast<const QTimer *>(sender()));
SVGTimer *svgTimer = 0;
SVGTimerList::iterator it;
for(it = m_timerList.begin(); it != m_timerList.end(); ++it)
{
SVGTimer *cur = *it;
if(*cur == senderTimer)
{
svgTimer = cur;
break;
}
}
if(!svgTimer)
{
svgTimer = (*m_intervalTimer == senderTimer) ? m_intervalTimer : 0;
if(!svgTimer)
return;
}
svgTimer->notifyAll();
// Animations need direct updates
if(m_doc->canvas())
m_doc->canvas()->update();
emit m_doc->finishedRendering();
if(svgTimer->singleShot())
{
m_timerList.remove(svgTimer);
delete svgTimer;
}
// The singleShot timers of ie. <animate> with begin="3s" are notified
// by the previous call, and now all connections to the interval timer
// are created and now we just need to fire that timer (Niko)
if(svgTimer != m_intervalTimer && !m_intervalTimer->isActive())
m_intervalTimer->start(this, SLOT(slotTimerNotify()));
}
float SVGTimeScheduler::elapsed() const
{
return float(m_creationTime.elapsed()) / 1000.0;
}
// vim:ts=4:noet
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