mask_boundaries.h

// Aseprite Document Library
// Copyright (c) 2020 Igara Studio S.A.
// Copyright (c) 2001-2015 David Capello
//
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.

#ifndef DOC_MASK_BOUNDARIES_H_INCLUDED
#define DOC_MASK_BOUNDARIES_H_INCLUDED
#pragma once

#include "gfx/path.h"
#include "gfx/rect.h"

#include <vector>

namespace doc {
class Image;

class MaskBoundaries {
public:
  class Segment {
  public:
    Segment(bool open, const gfx::Rect& bounds) : m_open(open), m_bounds(bounds) {}

    // Returns true if this segment enters into the boundaries.
    bool open() const { return m_open; }

    const gfx::Rect& bounds() const { return m_bounds; }
    void offset(int x, int y) { m_bounds.offset(x, y); }
    bool vertical() const { return m_bounds.w == 0; }
    bool horizontal() const { return m_bounds.h == 0; }

  private:
    bool m_open;
    gfx::Rect m_bounds;

    friend class MaskBoundaries;
  };

  typedef std::vector<Segment> list_type;
  typedef list_type::iterator iterator;
  typedef list_type::const_iterator const_iterator;

  bool isEmpty() const { return m_segs.empty(); }
  void reset();
  void regen(const Image* bitmap);

  const_iterator begin() const { return m_segs.begin(); }
  const_iterator end() const { return m_segs.end(); }
  iterator begin() { return m_segs.begin(); }
  iterator end() { return m_segs.end(); }

  void offset(int x, int y);
  gfx::Path& path() { return m_path; }

  void createPathIfNeeeded();

private:
  list_type m_segs;
  gfx::Path m_path;
};

} // namespace doc

#endif