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-rw-r--r--src/imports/particles/dataparticle.cpp274
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diff --git a/src/imports/particles/dataparticle.cpp b/src/imports/particles/dataparticle.cpp
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--- a/src/imports/particles/dataparticle.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the Declarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "dataparticle.h"
-#include <QtDeclarative/private/qsgvisualitemmodel_p.h>
-#include <qsgnode.h>
-#include <QDebug>
-
-QT_BEGIN_NAMESPACE
-
-DataParticle::DataParticle(QSGItem *parent) :
- ParticleType(parent), m_ownModel(false), m_comp(0), m_model(0), m_fade(true), m_modelCount(0)
-{
- setFlag(QSGItem::ItemHasContents);
-}
-
-QVariant DataParticle::model() const
-{
- return m_dataSource;
-}
-
-void DataParticle::setModel(const QVariant &arg)
-{
- if(arg == m_dataSource)
- return;
- m_dataSource = arg;
- if(qobject_cast<QSGVisualDataModel*>(arg.value<QObject*>())) {
- if(m_ownModel && m_model)
- delete m_model;
- m_model = qobject_cast<QSGVisualDataModel*>(arg.value<QObject*>());
- m_ownModel = false;
- }else{
- if(!m_model || !m_ownModel)
- m_model = new QSGVisualDataModel(qmlContext(this));
- m_model->setModel(m_dataSource);
- m_ownModel = true;
- }
- if(m_comp)
- m_model->setDelegate(m_comp);
- emit modelChanged();
- emit modelCountChanged();
- connect(m_model, SIGNAL(countChanged()),
- this, SIGNAL(modelCountChanged()));
- connect(m_model, SIGNAL(countChanged()),
- this, SLOT(updateCount()));
- updateCount();
-}
-
-void DataParticle::updateCount()
-{
- int newCount = 0;
- if(m_model)
- newCount = m_model->count();
- if(newCount < 0)
- return;//WTF?
- if(m_modelCount == 0 || newCount == 0){
- m_available.clear();
- for(int i=0; i<newCount; i++)
- m_available << i;
- }else if(newCount < m_modelCount){
- for(int i=newCount; i<m_modelCount; i++) //existing ones must leave normally, but aren't readded
- m_available.removeAll(i);
- }else if(newCount > m_modelCount){
- for(int i=m_modelCount; i<newCount; i++)
- m_available << i;
- }
- m_modelCount = newCount;
-}
-
-QDeclarativeComponent *DataParticle::delegate() const
-{
- if(m_model)
- return m_model->delegate();
- return 0;
-}
-
-void DataParticle::setDelegate(QDeclarativeComponent *comp)
-{
- if (QSGVisualDataModel *dataModel = qobject_cast<QSGVisualDataModel*>(m_model))
- if (comp == dataModel->delegate())
- return;
- m_comp = comp;
- if(m_model)
- m_model->setDelegate(comp);
- emit delegateChanged();
-}
-
-int DataParticle::modelCount() const
-{
- if(m_model)
- const_cast<DataParticle*>(this)->updateCount();//TODO: Investigate why this doesn't get called properly
- return m_modelCount;
-}
-
-
-void DataParticle::freeze(QSGItem* item)
-{
- m_stasis << item;
-}
-
-
-void DataParticle::unfreeze(QSGItem* item)
-{
- m_stasis.remove(item);
-}
-
-void DataParticle::load(ParticleData* d)
-{
- if(!m_model || !m_model->count())
- return;
- int pos = particleTypeIndex(d);
- if(m_available.isEmpty())
- return;
- if(m_items[pos]){
- if(m_stasis.contains(m_items[pos]))
- qWarning() << "Current model particles prefers overwrite:false";
- //remove old item from the particle that is dying to make room for this one
- m_items[pos]->setOpacity(0.);
- m_available << m_idx[pos];
- m_model->release(m_items[pos]);
- m_idx[pos] = -1;
- m_items[pos] = 0;
- m_data[pos] = 0;
- m_activeCount--;
- }
- m_items[pos] = m_model->item(m_available.first());
- m_idx[pos] = m_available.first();
- m_available.pop_front();
- DataParticleAttached* mpa = qobject_cast<DataParticleAttached*>(qmlAttachedPropertiesObject<DataParticle>(m_items[pos]));
- if(mpa){
- mpa->m_mp = this;
- mpa->attach();
- }
- m_items[pos]->setParentItem(this);
- m_data[pos] = d;
- m_activeCount++;
-}
-
-void DataParticle::reload(ParticleData* d)
-{
- //No-op unless we start copying the data.
-}
-
-void DataParticle::setCount(int c)
-{
- ParticleType::setCount(c);//###Do we need our own?
- m_particleCount = c;
- reset();
-}
-
-int DataParticle::count()
-{
- return m_particleCount;
-}
-
-void DataParticle::reset()
-{
- ParticleType::reset();
- //TODO: Cleanup items?
- m_items.resize(m_particleCount);
- m_data.resize(m_particleCount);
- m_idx.resize(m_particleCount);
- m_items.fill(0);
- m_data.fill(0);
- m_idx.fill(-1);
- //m_available.clear();//Should this be reset too?
- //m_pendingItems.clear();//TODO: Should this be done? If so, Emit signal?
-}
-
-
-QSGNode* DataParticle::updatePaintNode(QSGNode* n, UpdatePaintNodeData* d)
-{
- //Dummy update just to get painting tick
- if(m_pleaseReset){
- m_pleaseReset = false;
- reset();
- }
- prepareNextFrame();
-
- update();//Get called again
- if(n)
- n->markDirty(QSGNode::DirtyMaterial);
- return QSGItem::updatePaintNode(n,d);
-}
-
-void DataParticle::prepareNextFrame()
-{
- qint64 timeStamp = m_system->systemSync(this);
- qreal curT = timeStamp/1000.0;
- qreal dt = curT - m_lastT;
- m_lastT = curT;
- if(!m_activeCount)
- return;
-
- //TODO: Size, better fade?
- for(int i=0; i<m_particleCount; i++){
- QSGItem* item = m_items[i];
- ParticleData* data = m_data[i];
- if(!item || !data)
- continue;
- qreal t = ((timeStamp/1000.0) - data->pv.t) / data->pv.lifeSpan;
- if(m_stasis.contains(item)) {
- m_data[i]->pv.t += dt;//Stasis effect
- continue;
- }
- if(t >= 1.0){//Usually happens from load
- item->setOpacity(0.);
- m_available << m_idx[i];
- m_model->release(m_items[i]);
- m_idx[i] = -1;
- m_items[i] = 0;
- m_data[i] = 0;
- m_activeCount--;
- }else{//Fade
- if(m_fade){
- qreal o = 1.;
- if(t<0.2)
- o = t*5;
- if(t>0.8)
- o = (1-t)*5;
- item->setOpacity(o);
- }else{
- item->setOpacity(1.);//###Without fade, it's just a binary toggle - if we turn it off we have to turn it back on
- }
- }
- item->setX(data->curX() - item->width()/2);
- item->setY(data->curY() - item->height()/2);
- }
-}
-
-DataParticleAttached *DataParticle::qmlAttachedProperties(QObject *object)
-{
- return new DataParticleAttached(object);
-}
-
-QT_END_NAMESPACE
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