third_party/blink/renderer/core/svg/svg_matrix_tear_off.h

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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_MATRIX_TEAR_OFF_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_MATRIX_TEAR_OFF_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/transforms/affine_transform.h"

namespace blink {

class ExceptionState;
class SVGTransformTearOff;

// SVGMatrixTearOff wraps a AffineTransform for Javascript.
// Its instance can either hold a static value, or this can be teared off from
// |SVGTransform.matrix|.  This does not derive from SVGPropertyTearOff, as its
// instances are never tied to an animated property nor an XML attribute.
class CORE_EXPORT SVGMatrixTearOff final : public ScriptWrappable {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static SVGMatrixTearOff* Create(const AffineTransform& value) {
    return MakeGarbageCollected<SVGMatrixTearOff>(value);
  }

  static SVGMatrixTearOff* Create(SVGTransformTearOff* target) {
    return MakeGarbageCollected<SVGMatrixTearOff>(target);
  }

  explicit SVGMatrixTearOff(const AffineTransform&);
  explicit SVGMatrixTearOff(SVGTransformTearOff*);

  double a() { return Value().A(); }
  double b() { return Value().B(); }
  double c() { return Value().C(); }
  double d() { return Value().D(); }
  double e() { return Value().E(); }
  double f() { return Value().F(); }

  void setA(double, ExceptionState&);
  void setB(double, ExceptionState&);
  void setC(double, ExceptionState&);
  void setD(double, ExceptionState&);
  void setE(double, ExceptionState&);
  void setF(double, ExceptionState&);

  SVGMatrixTearOff* translate(double tx, double ty);
  SVGMatrixTearOff* scale(double);
  SVGMatrixTearOff* scaleNonUniform(double sx, double sy);
  SVGMatrixTearOff* rotate(double);
  SVGMatrixTearOff* flipX();
  SVGMatrixTearOff* flipY();
  SVGMatrixTearOff* skewX(double);
  SVGMatrixTearOff* skewY(double);
  SVGMatrixTearOff* multiply(SVGMatrixTearOff*);
  SVGMatrixTearOff* inverse(ExceptionState&);
  SVGMatrixTearOff* rotateFromVector(double x, double y, ExceptionState&);

  SVGTransformTearOff* ContextTransform() { return context_transform_; }

  const AffineTransform& Value() const;

  void Trace(blink::Visitor*) override;

 private:
  AffineTransform* MutableValue();
  void CommitChange();

  AffineTransform static_value_;

  TraceWrapperMember<SVGTransformTearOff> context_transform_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_MATRIX_TEAR_OFF_H_