skia_shadow.h

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#pragma once
 
#include <QRectF>
#include <QVector4D>
 
#include "qml_material/scenegraph/geometry.h"
 
namespace qml_material::sk
{
 
using scalar = float;
 
class ShadowCircularRRectOp {
public:
    enum RRectType
    {
        kFill_RRectType,       
        kStroke_RRectType,     
        kOverstroke_RRectType, 
    };
 
    struct Geometry {
        QRgb      color;
        QVector4D outer_radius; // TL, TR, BL, BR
        scalar    inner_radius;
        scalar    blur_radius;
        QRectF    dev_bounds;
        RRectType type;
        bool      is_circle;
    };
 
    ShadowCircularRRectOp(QRgb color, const QRectF& devRect, QVector4D devRadius, bool isCircle,
                          float blurRadius, float insetWidth);
 
    void fillInCircleVerts(bool isStroked, sg::ShadowVertex** vp) const;
    void fillInRRectVerts(sg::ShadowVertex** vp) const;
 
    Geometry        fGeoData;
    int             fVertCount;
    int             fIndexCount;
    const uint16_t* fIndexPtr;
 
    static const uint16_t* circle_type_to_indices(bool stroked);
    static const uint16_t* rrect_type_to_indices(RRectType type);
};
 
} // namespace qml_material::sk