1 files changed, 135 insertions, 0 deletions
diff --git a/src/imports/particles/particle.cpp b/src/imports/particles/particle.cpp
new file mode 100644
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+++ b/src/imports/particles/particle.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 "particle.h"
+#include <QDebug>
+QT_BEGIN_NAMESPACE
+ParticleType::ParticleType(QSGItem *parent) :
+    QSGItem(parent),
+    m_system(0)
+{
+    connect(this, SIGNAL(xChanged()),
+            this, SLOT(calcSystemOffset()));
+    connect(this, SIGNAL(yChanged()),
+            this, SLOT(calcSystemOffset()));
+}
+
+void ParticleType::componentComplete()
+{
+    if(!m_system)
+        qWarning() << "Particle created without a particle system specified";//TODO: useful QML warnings, like line number?
+    QSGItem::componentComplete();
+}
+
+
+void ParticleType::setSystem(ParticleSystem *arg)
+{
+    if (m_system != arg) {
+        m_system = arg;
+        if(m_system){
+            m_system->registerParticleType(this);
+            connect(m_system, SIGNAL(xChanged()),
+                    this, SLOT(calcSystemOffset()));
+            connect(m_system, SIGNAL(yChanged()),
+                    this, SLOT(calcSystemOffset()));
+            calcSystemOffset();
+        }
+        emit systemChanged(arg);
+    }
+}
+
+void ParticleType::load(ParticleData*)
+{
+}
+
+void ParticleType::reload(ParticleData*)
+{
+}
+
+void ParticleType::reset()
+{
+    //Have to every time because what it's emitting may have changed and that affects particleTypeIndex
+    m_particleStarts.clear();
+    m_lastStart = 0;
+}
+
+void ParticleType::setCount(int c)
+{
+    if(c == m_count)
+        return;
+    m_count = c;
+    emit countChanged();
+}
+
+int ParticleType::count()
+{
+    return m_count;
+}
+
+
+int ParticleType::particleTypeIndex(ParticleData* d)
+{
+    if(!m_particleStarts.contains(d->group)){
+        m_particleStarts.insert(d->group, m_lastStart);
+        m_lastStart += m_system->m_groupData[d->group]->size;
+    }
+    int ret = m_particleStarts[d->group] + d->particleIndex;
+    Q_ASSERT(ret >=0 && ret < m_count);//XXX: Possibly shouldn't assert, but bugs here were hard to find in the past
+    return ret;
+}
+
+
+void ParticleType::calcSystemOffset()
+{
+    if(!m_system)
+        return;
+    QPointF lastOffset = m_systemOffset;
+    m_systemOffset = this->mapFromItem(m_system, QPointF());
+    if(lastOffset != m_systemOffset){
+        //Reload all particles
+        foreach(const QString &g, m_particles){
+            int gId = m_system->m_groupIds[g];
+            for(int i=0; i<m_system->m_groupData[gId]->size; i++)
+                reload(m_system->m_data[m_system->m_groupData[gId]->start + i]);
+        }
+    }
+}
+QT_END_NAMESPACE