QskBoxBasicStroker.h

/******************************************************************************
 * QSkinny - Copyright (C) The authors
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/
 
#ifndef QSK_BOX_BASIC_STROKER_H
#define QSK_BOX_BASIC_STROKER_H
 
#include "QskBoxMetrics.h"
#include "QskBoxBorderColors.h"
#include "QskVertexHelper.h"
 
class QskBoxShapeMetrics;
class QskBoxBorderMetrics;
 
namespace QskVertex
{
    class Line;
    class ColoredLine;
}
 
class QskBoxBasicStroker
{
  public:
    QskBoxBasicStroker( const QskBoxMetrics& );
    QskBoxBasicStroker( const QskBoxMetrics&, const QskBoxBorderColors& );
    QskBoxBasicStroker( const QskBoxMetrics&,
        const QskBoxBorderColors&, const QskVertex::ColorMap& );
 
    int fillCount() const;
    int borderCount() const;
 
    /*
        QskVertex::Line ( = QSGGeometry::Point2D )
 
        Needed for:
 
            - monochrome coloring ( QSGSimpleMaterial )
            - clipping ( QSGClipNode )
            - shaders getting the color information from a color ramp
              ( = QskGradientMatrial )
     */
 
    void setBorderLines( QskVertex::Line* ) const;
    void setFillLines( QskVertex::Line* ) const;
 
    /*
        QskVertex::ColoredLine ( = QSGGeometry::ColoredPoint2D )
 
        The color information is added to the geometry what allows
        using the same shader regardless of the colors, what ends
        up in better scene graph batching
     */
 
    void setBorderLines( QskVertex::ColoredLine* ) const;
    void setFillLines( QskVertex::ColoredLine* ) const;
 
    void setBoxLines( QskVertex::ColoredLine*, QskVertex::ColoredLine* ) const;
 
  private:
 
    class GeometryLayout
    {
      public:
        GeometryLayout( const QskBoxMetrics&, const QskBoxBorderColors& );
 
        int cornerOffsets[ 4 ];
        int edgeOffsets[ 4 ];
 
        int closingOffsets[2];
        int lineCount;
    };
 
    void setBorderGradientLines( QskVertex::ColoredLine* ) const;
    void setBorderGradientLines( Qt::Edge, QskVertex::ColoredLine* ) const;
 
    void setBorderAndFillLines( QskVertex::ColoredLine*, QskVertex::ColoredLine* ) const;
 
    const QskBoxMetrics& m_metrics;
    const QskBoxBorderColors m_borderColors;
    const QskVertex::ColorMap m_colorMap;
    const GeometryLayout m_geometryLayout;
 
    const bool m_isColored;
};
 
#endif