Initial import of Qt3DCore and Renderer aspect

For now the renderer aspect is still compiled into the Qt3DCore library.
This needs to be split out into a plugin so it can be loaded
dynamically along with other future aspects.

Change-Id: Iba8402b35c7ebc1c503d438c87aad77f5fef2261
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/render/frontend/qitemmodelbuffer.h b/src/render/frontend/qitemmodelbuffer.h
new file mode 100644
index 000000000..c567ab545
--- /dev/null
+++ b/src/render/frontend/qitemmodelbuffer.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3D_QITEMMODELBUFFER_H
+#define QT3D_QITEMMODELBUFFER_H
+
+#include <QAbstractItemModel>
+#include <QMap>
+#include <QObject>
+
+#include <meshdata.h>
+
+namespace Qt3D {
+
+class QItemModelBuffer : public QObject
+{
+    Q_OBJECT
+public:
+    QItemModelBuffer();
+
+    void setModel(QAbstractItemModel* model);
+    void setRoot(const QModelIndex& rootIndex);
+
+    void mapRoleName(QByteArray roleName, int type);
+    void mapRoleName(QByteArray roleName, QString attributeName, int type);
+
+    BufferPtr buffer();
+
+    QStringList attributeNames() const;
+    AttributePtr attributeByName(QString nm) const;
+
+private slots:
+
+    void onModelReset();
+
+    void onModelDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
+private:
+    QAbstractItemModel* m_model;
+    QModelIndex m_rootIndex;
+
+    struct RoleMapping {
+        RoleMapping(QByteArray role, QString attr, int ty);
+
+        QByteArray roleName;
+        int cachedRole;
+        QString attribute;
+        int type;
+        int byteSize;
+    };
+
+    QList<RoleMapping> m_mappings;
+
+    BufferPtr m_buffer;
+    QMap<QString, AttributePtr> m_attributes;
+    int m_itemStride;
+
+    QByteArray computeBufferData();
+
+    void writeDataForIndex(const QModelIndex &index, int mappingCount, char *bufferPtr);
+    bool validateRoles();
+};
+
+} // namespace Qt3D
+
+#endif // QT3D_QITEMMODELBUFFER_H