layer.h

// Aseprite UI Library
// Copyright (C) 2024  Igara Studio S.A.
//
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.

#ifndef UI_LAYER_H_INCLUDED
#define UI_LAYER_H_INCLUDED
#pragma once

#include "base/ref.h"
#include "gfx/region.h"
#include "os/paint.h"
#include "os/surface.h"

namespace os {
class Surface;
}

namespace ui {

class UILayer;
using UILayerRef = base::Ref<UILayer>;
using UILayers = std::vector<UILayerRef>;

class UILayer : public base::RefCountT<UILayer> {
public:
  static UILayerRef Make() { return base::make_ref<UILayer>(); }

  UILayer() = default;

  void reset();

  os::SurfaceRef surface() const { return m_surface; }
  gfx::Point& position() { return m_pos; }
  os::Paint& paint() { return m_paint; }
  const gfx::Region& clipRegion() const { return m_clip; }

  void setSurface(const os::SurfaceRef& newSurface);
  void setPosition(const gfx::Point& pos);
  void setPaint(const os::Paint p) { m_paint = p; }
  void setClipRegion(const gfx::Region& rgn) { m_clip = rgn; }

  gfx::Rect bounds() const;

  operator bool() const { return m_surface != nullptr; }

private:
  os::SurfaceRef m_surface;
  gfx::Point m_pos;
  os::Paint m_paint;
  gfx::Region m_clip;
};

} // namespace ui

#endif