rtorrent/src/display/frame.h

#ifndef RTORRENT_DISPLAY_FRAME_H
#define RTORRENT_DISPLAY_FRAME_H

#include <cinttypes>
#include <utility>

namespace display {

class Window;

class Frame {
public:
  typedef uint32_t                       extent_type;
  typedef uint32_t                       size_type;

  enum Type {
    TYPE_NONE,
    TYPE_WINDOW,
    TYPE_ROW,
    TYPE_COLUMN
  };

  struct bounds_type {
    bounds_type() = default;
    bounds_type(extent_type minW, extent_type minH, extent_type maxW, extent_type maxH) :
      minWidth(minW), minHeight(minH), maxWidth(maxW), maxHeight(maxH) {}

    extent_type min_width() const  { return minWidth; }
    extent_type min_height() const { return minHeight; }

    extent_type minWidth;
    extent_type minHeight;

    extent_type maxWidth;
    extent_type maxHeight;
  };

  typedef std::pair<Frame*, bounds_type> dynamic_type;

  static const size_type max_size = 5;

  bool                is_width_dynamic() const;
  bool                is_height_dynamic() const;

  bool                has_left_frame() const;
  bool                has_bottom_frame() const;

  bounds_type         preferred_size() const;

  uint32_t            position_x() const                { return m_positionX; }
  uint32_t            position_y() const                { return m_positionY; }

  uint32_t            width() const                     { return m_width; }
  uint32_t            height() const                    { return m_height; }

  Type                get_type() const                  { return m_type; }
  void                set_type(Type t);

  Window*             window() const                    { return m_window; }

  Frame*              frame(size_type idx)              { return m_container[idx]; }

  size_type           container_size() const            { return m_containerSize; }
  void                set_container_size(size_type size);

  void                initialize_window(Window* window);
  void                initialize_row(size_type size);
  void                initialize_column(size_type size);

  void                clear();

  void                refresh();
  void                redraw();

  void                balance(uint32_t x, uint32_t y, uint32_t width, uint32_t height);

private:
  inline void         balance_window(uint32_t x, uint32_t y, uint32_t width, uint32_t height);
  inline void         balance_row(uint32_t x, uint32_t y, uint32_t width, uint32_t height);
  inline void         balance_column(uint32_t x, uint32_t y, uint32_t width, uint32_t height);

  Type                m_type{TYPE_NONE};

  uint32_t            m_positionX{};
  uint32_t            m_positionY{};
  uint32_t            m_width{};
  uint32_t            m_height{};

  union {
    Window*             m_window;

    struct {
      size_type           m_containerSize;
      Frame*              m_container[max_size];
    };
  };
};

}

#endif