group-shape.h

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#pragma once
 
#include <shape/shape.h>
#include <canvas/cache-stack.h>
 
// We may need to change the group to cross-layer group instead of a shape object in the future
// This group implementation is downward compatible with other vector design software's paradigm
class GroupShape : public Shape {
public:
  GroupShape();
 
  GroupShape(QList<ShapePtr> &children);
 
  bool hitTest(QPointF global_coord, qreal tolerance) const override;
 
  bool hitTest(QRectF global_coord_rect) const override;
 
  void paint(QPainter *painter) const override;
 
  ShapePtr clone() const override;
 
  Shape::Type type() const override;
 
  const QList<ShapePtr> &children() const;
 
  friend class DocumentSerializer;
 
  friend class CacheStack;
 
protected:
 
  CacheStack &cacheStack() const;
 
private:
 
  void calcBoundingBox() const override;
 
  void cache() const;
 
 
  QList<ShapePtr> children_;
  mutable unique_ptr<CacheStack> cache_;
};