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Diffstat (limited to 'src/declarative/particles/qsgfollowemitter_p.h')
| -rw-r--r-- | src/declarative/particles/qsgfollowemitter_p.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/declarative/particles/qsgfollowemitter_p.h b/src/declarative/particles/qsgfollowemitter_p.h new file mode 100644 index 0000000000..bf5d2fe8ef --- /dev/null +++ b/src/declarative/particles/qsgfollowemitter_p.h @@ -0,0 +1,168 @@ +/**************************************************************************** +** +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef FOLLOWEMITTER_H +#define FOLLOWEMITTER_H +#include "qsgparticleemitter_p.h" +#include "qsgparticleaffector_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) + + +class QSGFollowEmitter : public QSGParticleEmitter +{ + Q_OBJECT + Q_PROPERTY(QString follow READ follow WRITE setFollow NOTIFY followChanged) + //### Remove, and just document that particles per second is per particle? But has count issues + Q_PROPERTY(int emitRatePerParticle READ particlesPerParticlePerSecond WRITE setParticlesPerParticlePerSecond NOTIFY particlesPerParticlePerSecondChanged) + + //TODO: Document that FollowEmitter's box is where it follows. It emits in a rect centered on the followed particle + //TODO: A set of properties that can involve the particle size of the followed + Q_PROPERTY(QSGParticleExtruder* emitShape READ emissonShape WRITE setEmissionShape NOTIFY emissionShapeChanged) + Q_PROPERTY(qreal emitHeight READ emitterYVariation WRITE setEmitterYVariation NOTIFY emitterYVariationChanged) + Q_PROPERTY(qreal emitWidth READ emitterXVariation WRITE setEmitterXVariation NOTIFY emitterXVariationChanged) + +public: + explicit QSGFollowEmitter(QSGItem *parent = 0); + virtual void emitWindow(int timeStamp); + virtual void reset(); + + int particlesPerParticlePerSecond() const + { + return m_particlesPerParticlePerSecond; + } + + qreal emitterXVariation() const + { + return m_emitterXVariation; + } + + qreal emitterYVariation() const + { + return m_emitterYVariation; + } + + QString follow() const + { + return m_follow; + } + + QSGParticleExtruder* emissonShape() const + { + return m_emissionExtruder; + } + +signals: + + void particlesPerParticlePerSecondChanged(int arg); + + void emitterXVariationChanged(qreal arg); + + void emitterYVariationChanged(qreal arg); + + void followChanged(QString arg); + + void emissionShapeChanged(QSGParticleExtruder* arg); + +public slots: + + void setParticlesPerParticlePerSecond(int arg) + { + if (m_particlesPerParticlePerSecond != arg) { + m_particlesPerParticlePerSecond = arg; + emit particlesPerParticlePerSecondChanged(arg); + } + } + void setEmitterXVariation(qreal arg) + { + if (m_emitterXVariation != arg) { + m_emitterXVariation = arg; + emit emitterXVariationChanged(arg); + } + } + + void setEmitterYVariation(qreal arg) + { + if (m_emitterYVariation != arg) { + m_emitterYVariation = arg; + emit emitterYVariationChanged(arg); + } + } + + void setFollow(QString arg) + { + if (m_follow != arg) { + m_follow = arg; + emit followChanged(arg); + } + } + + void setEmissionShape(QSGParticleExtruder* arg) + { + if (m_emissionExtruder != arg) { + m_emissionExtruder = arg; + emit emissionShapeChanged(arg); + } + } + +private slots: + void recalcParticlesPerSecond(); + +private: + QSet<QSGParticleData*> m_pending; + QVector<qreal> m_lastEmission; + int m_particlesPerParticlePerSecond; + qreal m_lastTimeStamp; + qreal m_emitterXVariation; + qreal m_emitterYVariation; + QString m_follow; + int m_followCount; + QSGParticleExtruder* m_emissionExtruder; + QSGParticleExtruder* m_defaultEmissionExtruder; +}; + +QT_END_NAMESPACE +QT_END_HEADER +#endif // FOLLOWEMITTER_H |