third_party/blink/renderer/core/paint/clip_rect.h

/*
 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CLIP_RECT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CLIP_RECT_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/geometry/physical_rect.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"

namespace blink {

class FloatClipRect;
class HitTestLocation;

class CORE_EXPORT ClipRect {
  USING_FAST_MALLOC(ClipRect);

 public:
  ClipRect();
  ClipRect(const PhysicalRect& rect)
      : rect_(rect), has_radius_(false), is_infinite_(false) {}
  ClipRect(const FloatClipRect& rect);

  void SetRect(const PhysicalRect& rect);
  const PhysicalRect& Rect() const { return rect_; }
  void SetRect(const FloatClipRect& rect);

  // HasRadius is true if the clip this ClipRect has rounded corners.
  // The ClipRect does not actually represent the rounded corners; those
  // are computed as neeeded from the LayoutObject when actually applying the
  // clip.
  bool HasRadius() const { return has_radius_; }
  void SetHasRadius(bool has_radius) {
    if (IsInfinite())
      return;
    has_radius_ = has_radius;
  }

  bool IsInfinite() const { return is_infinite_; }

  bool operator==(const ClipRect& other) const {
    return Rect() == other.Rect() && HasRadius() == other.HasRadius();
  }
  bool operator!=(const ClipRect& other) const {
    return Rect() != other.Rect() || HasRadius() != other.HasRadius();
  }
  bool operator!=(const PhysicalRect& other_rect) const {
    return Rect() != other_rect;
  }

  void Intersect(const PhysicalRect& other);
  void Intersect(const ClipRect& other);

  void Move(const PhysicalOffset& offset) { rect_.offset += offset; }

  bool IsEmpty() const { return rect_.IsEmpty(); }
  bool Intersects(const HitTestLocation&) const;

  void Reset();

  String ToString() const;

 private:
  void SetRectInternal(const FloatClipRect&);

  PhysicalRect rect_;
  bool has_radius_ : 1;
  bool is_infinite_ : 1;
};

inline ClipRect Intersection(const ClipRect& a, const ClipRect& b) {
  ClipRect c = a;
  c.Intersect(b);
  return c;
}

CORE_EXPORT std::ostream& operator<<(std::ostream&, const ClipRect&);

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CLIP_RECT_H_