Extract Particles code to an independent library

QtQuick clients that do not use particles features should not have
to load these classes.

Task-number: QTBUG-25178
Change-Id: Ib15f7655dc4d821595e06f9160d2770375279027
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/src/particles/qquickcustomparticle_p.h b/src/particles/qquickcustomparticle_p.h
new file mode 100644
index 0000000000..f689091268
--- /dev/null
+++ b/src/particles/qquickcustomparticle_p.h
@@ -0,0 +1,119 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CUSTOM_PARTICLE_H
+#define CUSTOM_PARTICLE_H
+#include "qquickparticlepainter_p.h"
+#include <private/qquickshadereffectnode_p.h>
+#include <private/qquickshadereffect_p.h>
+#include <QSignalMapper>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QSGNode;
+struct PlainVertices;
+
+class QQuickShaderEffectMaterialObject;
+
+//Genealogy: Hybrid of UltraParticle and ShaderEffect
+class QQuickCustomParticle : public QQuickParticlePainter
+{
+    Q_OBJECT
+    Q_PROPERTY(QByteArray fragmentShader READ fragmentShader WRITE setFragmentShader NOTIFY fragmentShaderChanged)
+    Q_PROPERTY(QByteArray vertexShader READ vertexShader WRITE setVertexShader NOTIFY vertexShaderChanged)
+
+public:
+    explicit QQuickCustomParticle(QQuickItem* parent=0);
+    ~QQuickCustomParticle();
+
+    QByteArray fragmentShader() const { return m_common.source.sourceCode[Key::FragmentShader]; }
+    void setFragmentShader(const QByteArray &code);
+
+    QByteArray vertexShader() const { return m_common.source.sourceCode[Key::VertexShader]; }
+    void setVertexShader(const QByteArray &code);
+
+Q_SIGNALS:
+    void fragmentShaderChanged();
+    void vertexShaderChanged();
+
+protected:
+    virtual void initialize(int gIdx, int pIdx);
+    virtual void commit(int gIdx, int pIdx);
+
+    QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *);
+    QQuickShaderEffectNode *prepareNextFrame(QQuickShaderEffectNode *rootNode);
+    void reset();
+    void resize(int oldCount, int newCount);
+    virtual void componentComplete();
+    QQuickShaderEffectNode *buildCustomNodes();
+
+    void sceneGraphInvalidated();
+    void itemChange(ItemChange change, const ItemChangeData &value);
+
+private Q_SLOTS:
+    void sourceDestroyed(QObject *object);
+    void propertyChanged(int mappedId);
+
+private:
+    typedef QQuickShaderEffectMaterialKey Key;
+    typedef QQuickShaderEffectMaterial::UniformData UniformData;
+
+    void buildData(QQuickShaderEffectNode *rootNode);
+    void updateVertexShader();
+
+    QQuickShaderEffectCommon m_common;
+
+    QHash<int, QQuickShaderEffectNode*> m_nodes;
+    qreal m_lastTime;
+
+    uint m_dirtyUniforms : 1;
+    uint m_dirtyUniformValues : 1;
+    uint m_dirtyTextureProviders : 1;
+    uint m_dirtyProgram : 1;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif //HEADER_GUARD