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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_RAY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_RAY_H_
#include "third_party/blink/renderer/core/style/basic_shapes.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace gfx {
class PointF;
}
namespace blink {
struct PointAndTangent;
class StyleRay : public BasicShape {
public:
enum class RaySize {
kClosestSide,
kClosestCorner,
kFarthestSide,
kFarthestCorner,
kSides
};
StyleRay(float angle,
RaySize,
bool contain,
const BasicShapeCenterCoordinate& center_x,
const BasicShapeCenterCoordinate& center_y,
bool has_explicit_center);
~StyleRay() override = default;
float CalculateRayPathLength(const gfx::PointF& starting_point,
const gfx::SizeF& reference_box_size) const;
PointAndTangent PointAndNormalAtLength(const gfx::PointF& starting_point,
float length) const;
float Angle() const { return ClampTo<float, float>(angle_); }
RaySize Size() const { return size_; }
bool Contain() const { return contain_; }
bool HasExplicitCenter() const { return has_explicit_center_; }
const BasicShapeCenterCoordinate& CenterX() const { return center_x_; }
const BasicShapeCenterCoordinate& CenterY() const { return center_y_; }
Path GetPath(const gfx::RectF&, float, float) const override;
ShapeType GetType() const override { return kStyleRayType; }
protected:
bool IsEqualAssumingSameType(const BasicShape&) const override;
private:
float angle_;
RaySize size_;
bool contain_;
BasicShapeCenterCoordinate center_x_;
BasicShapeCenterCoordinate center_y_;
bool has_explicit_center_ = true;
};
template <>
struct DowncastTraits<StyleRay> {
static bool AllowFrom(const BasicShape& value) {
return value.GetType() == BasicShape::kStyleRayType;
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_STYLE_RAY_H_
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