QskShapeNode introduced ( completely untestest, without gradients in the

first version )

src/nodes/QskShapeNode.cpp

@@ -0,0 +1,84 @@
+/******************************************************************************
+ * QSkinny - Copyright (C) 2016 Uwe Rathmann
+ * This file may be used under the terms of the QSkinny License, Version 1.0
+ *****************************************************************************/
+
+#include "QskShapeNode.h"
+
+#include <qsgflatcolormaterial.h>
+
+QSK_QT_PRIVATE_BEGIN
+#include <private/qsgnode_p.h>
+#include <private/qvectorpath_p.h>
+#include <private/qtriangulator_p.h>
+QSK_QT_PRIVATE_END
+
+static void qskUpdateGeometry( const QPainterPath& path, QSGGeometry& geometry )
+{
+    const auto ts = qTriangulate( path, QTransform(), 1, false );
+
+    /*
+        QTriangleSet:
+
+        vertices: (x[i[n]], y[i[n]]), (x[j[n]], y[j[n]]), (x[k[n]], y[k[n]]), n = 0, 1, ...
+        QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+        QVector<quint16> indices; // [i[0], j[0], k[0], i[1], j[1], k[1], i[2], ...]
+     */
+
+    geometry.allocate( ts.vertices.size(), ts.indices.size() );
+
+    auto vertexData = geometry.vertexDataAsPoint2D();
+    const auto points = ts.vertices.constData();
+
+    /*
+        As we have to iterate over the vertex buffer to copy qreal to float
+        anyway we could reorder according to the index buffer and drop
+        the index buffer then ???
+     */
+
+    for ( int i = 0; i < ts.vertices.count(); ++i )
+        vertexData[i].set( points[i * 2], points[i * 2 + 1] );
+
+    memcpy( geometry.indexData(), ts.indices.data(),
+        ts.indices.size() * sizeof( quint16 ) );
+}
+
+class QskShapeNodePrivate final : public QSGGeometryNodePrivate
+{
+  public:
+    QskShapeNodePrivate()
+        : geometry( QSGGeometry::defaultAttributes_Point2D(), 0 )
+    {
+        geometry.setDrawingMode( QSGGeometry::DrawTriangles );
+    }
+
+    QSGGeometry geometry;
+    QSGMaterial* material = nullptr;
+};
+
+QskShapeNode::QskShapeNode()
+    : QSGGeometryNode( *new QskShapeNodePrivate )
+{
+    Q_D( QskShapeNode );
+
+    setGeometry( &d->geometry );
+    setFlag( QSGNode::OwnsMaterial, true );
+}
+
+void QskShapeNode::updateNode( const QPainterPath& path, const QColor& color )
+{
+    if ( true ) // For the moment we always update the geometry. TODO ...
+    {
+        qskUpdateGeometry( path, *geometry() );
+        markDirty( QSGNode::DirtyGeometry );
+    }
+
+    if ( true ) // For the moment we always update the material
+    {
+        auto material = new QSGFlatColorMaterial();
+        material->setColor( color );
+
+        setMaterial( material );
+        markDirty( QSGNode::DirtyMaterial );
+    }
+}

src/nodes/QskShapeNode.h

@@ -0,0 +1,28 @@
+/******************************************************************************
+ * QSkinny - Copyright (C) 2016 Uwe Rathmann
+ * This file may be used under the terms of the QSkinny License, Version 1.0
+ *****************************************************************************/
+
+#ifndef QSK_SHAPE_NODE_H
+#define QSK_SHAPE_NODE_H
+
+#include "QskGlobal.h"
+#include <qsgnode.h>
+
+class QColor;
+class QPainterPath;
+
+class QskShapeNodePrivate;
+
+class QskShapeNode : public QSGGeometryNode
+{
+  public:
+    QskShapeNode();
+
+    void updateNode( const QPainterPath&, const QColor& );
+
+  private:
+    Q_DECLARE_PRIVATE( QskShapeNode )
+};
+
+#endif