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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtQuick module of the Qt Toolkit. |
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| ** |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #ifndef ITEMPARTICLE_H |
| #define ITEMPARTICLE_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| #include "qquickparticlepainter_p.h" |
| #include <QPointer> |
| #include <QSet> |
| #include <private/qquickanimation_p_p.h> |
| QT_BEGIN_NAMESPACE |
| |
| class QQuickItemParticleAttached; |
| |
| class QQuickItemParticle : public QQuickParticlePainter |
| { |
| Q_OBJECT |
| Q_PROPERTY(bool fade READ fade WRITE setFade NOTIFY fadeChanged) |
| Q_PROPERTY(QQmlComponent* delegate READ delegate WRITE setDelegate NOTIFY delegateChanged) |
| QML_NAMED_ELEMENT(ItemParticle) |
| QML_ATTACHED(QQuickItemParticleAttached) |
| public: |
| explicit QQuickItemParticle(QQuickItem *parent = 0); |
| ~QQuickItemParticle(); |
| |
| bool fade() const { return m_fade; } |
| |
| QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override; |
| |
| static QQuickItemParticleAttached *qmlAttachedProperties(QObject *object); |
| QQmlComponent* delegate() const |
| { |
| return m_delegate; |
| } |
| |
| Q_SIGNALS: |
| void fadeChanged(); |
| |
| void delegateChanged(QQmlComponent* arg); |
| |
| public Q_SLOTS: |
| //TODO: Add a follow mode, where moving the delegate causes the logical particle to go with it? |
| void freeze(QQuickItem* item); |
| void unfreeze(QQuickItem* item); |
| void take(QQuickItem* item,bool prioritize=false);//take by modelparticle |
| void give(QQuickItem* item);//give from modelparticle |
| |
| void setFade(bool arg){if (arg == m_fade) return; m_fade = arg; Q_EMIT fadeChanged();} |
| void setDelegate(QQmlComponent* arg) |
| { |
| if (m_delegate != arg) { |
| m_delegate = arg; |
| Q_EMIT delegateChanged(arg); |
| } |
| } |
| |
| protected: |
| void reset() override; |
| void commit(int gIdx, int pIdx) override; |
| void initialize(int gIdx, int pIdx) override; |
| void prepareNextFrame(); |
| private: |
| void processDeletables(); |
| void tick(int time = 0); |
| QSet<QQuickItem* > m_deletables; |
| QList<QQuickItem* > m_managed; |
| bool m_fade; |
| |
| QList<QQuickItem*> m_pendingItems; |
| QList<int> m_available; |
| QSet<QQuickItem*> m_stasis; |
| qreal m_lastT; |
| int m_activeCount; |
| QQmlComponent* m_delegate; |
| |
| typedef QTickAnimationProxy<QQuickItemParticle, &QQuickItemParticle::tick> Clock; |
| Clock *clock; |
| }; |
| |
| class QQuickItemParticleAttached : public QObject |
| { |
| Q_OBJECT |
| Q_PROPERTY(QQuickItemParticle* particle READ particle CONSTANT); |
| public: |
| QQuickItemParticleAttached(QObject* parent) |
| : QObject(parent), m_mp(0), m_parentItem(nullptr) |
| {;} |
| QQuickItemParticle* particle() const { return m_mp; } |
| void detach(){Q_EMIT detached();} |
| void attach(){Q_EMIT attached();} |
| private: |
| QQuickItemParticle* m_mp; |
| QPointer<QQuickItem> m_parentItem; |
| friend class QQuickItemParticle; |
| Q_SIGNALS: |
| void detached(); |
| void attached(); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // ITEMPARTICLE_H |