cel_data.h

// Aseprite Document Library
// Copyright (C) 2019-2022  Igara Studio S.A.
// Copyright (C) 2001-2016  David Capello
//
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.

#ifndef DOC_CEL_DATA_H_INCLUDED
#define DOC_CEL_DATA_H_INCLUDED
#pragma once

#include "doc/image_ref.h"
#include "doc/object.h"
#include "doc/with_user_data.h"
#include "gfx/rect.h"

#include <memory>

namespace doc {

  class Layer;
  class Tileset;

  class CelData : public WithUserData {
  public:
    CelData(const ImageRef& image);
    CelData(const CelData& celData);
    ~CelData();

    gfx::Point position() const { return m_bounds.origin(); }
    const gfx::Rect& bounds() const { return m_bounds; }
    int opacity() const { return m_opacity; }
    Image* image() const { return const_cast<Image*>(m_image.get()); };
    ImageRef imageRef() const { return m_image; }

    // Returns a rectangle with the bounds of the image (width/height
    // of the image) in the position of the cel (useful to compare
    // active tilemap bounds when we have to change the tilemap cel
    // bounds).
    gfx::Rect imageBounds() const {
      return gfx::Rect(m_bounds.x,
                       m_bounds.y,
                       m_image->width(),
                       m_image->height());
    }

    void setImage(const ImageRef& image, Layer* layer);
    void setPosition(const gfx::Point& pos);

    void setOpacity(int opacity) {
      m_opacity = opacity;
    }

    void setBounds(const gfx::Rect& bounds) {
      ASSERT(bounds.w > 0);
      ASSERT(bounds.h > 0);
      m_bounds = bounds;
      if (m_boundsF)
        *m_boundsF = gfx::RectF(bounds);
    }

    void setBoundsF(const gfx::RectF& boundsF) {
      if (m_boundsF)
        *m_boundsF = boundsF;
      else
        m_boundsF = std::make_unique<gfx::RectF>(boundsF);

      m_bounds = gfx::Rect(boundsF);
      if (m_bounds.w <= 0) m_bounds.w = 1;
      if (m_bounds.h <= 0) m_bounds.h = 1;
    }

    const gfx::RectF& boundsF() const {
      if (!m_boundsF)
        m_boundsF = std::make_unique<gfx::RectF>(m_bounds);
      return *m_boundsF;
    }

    bool hasBoundsF() const {
      return m_boundsF != nullptr;
    }

    virtual int getMemSize() const override {
      ASSERT(m_image);
      return sizeof(CelData) + m_image->getMemSize();
    }

    void adjustBounds(Layer* layer);

  private:
    ImageRef m_image;
    int m_opacity;
    gfx::Rect m_bounds;

    // Special bounds for reference layers that can have subpixel
    // position.
    mutable std::unique_ptr<gfx::RectF> m_boundsF;
  };

  typedef std::shared_ptr<CelData> CelDataRef;

} // namespace doc

#endif