canvas.hh

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#pragma once
 
#include "game.h"
#include "utils.h"
#include <wx/bitmap.h>
#include <wx/dc.h>
#include <wx/dcmemory.h>
#include <wx/defs.h>
#include <wx/event.h>
#include <wx/gdicmn.h>
#include <wx/types.h>
#include <wx/window.h>
 
class GamePanel;
 
class CanvasPanel : public wxWindow {
public:
  static const wxCoord TILE_SIZE = 40;
 
  CanvasPanel(wxWindow* parent, wxWindowID id, GamePanel* panel);
 
  virtual bool AcceptsFocus() const override {
    return true;
  }
 
  wxSize get_canvas_size() const;
  Coords tile_coords_at_point(wxPoint point) const;
  wxRect get_tile_rect(Coords coords) const;
  wxPoint get_tile_centre(Coords coords) const;
 
  Coords get_selected_penguin_coords() const;
 
  bool mouse_within_window = false;
  bool mouse_is_down = false;
  bool mouse_is_down_real = false;
  wxPoint mouse_pos = wxDefaultPosition;
  wxPoint prev_mouse_pos = wxDefaultPosition;
  wxPoint mouse_drag_pos = wxDefaultPosition;
 
  void paint_selected_tile_outline(wxDC& dc, Coords coords, bool blocked = false);
  void paint_move_arrow(wxDC& dc, Coords start, Coords end);
  void paint_move_arrow(wxDC& dc, Coords start, Coords end, Coords fail, bool valid);
 
  enum ArrowHeadType {
    ARROW_HEAD_NORMAL = 1,
    ARROW_HEAD_CROSS = 2,
  };
 
  void paint_arrow_head(
    wxDC& dc,
    wxPoint start,
    wxPoint end,
    wxSize head_size,
    ArrowHeadType head_type = ARROW_HEAD_NORMAL
  );
 
protected:
  void on_paint(wxPaintEvent& event);
  void draw_bitmap(wxDC& dc, const wxBitmap& bitmap, const wxPoint& pos);
  void paint_tiles(wxDC& dc, const wxRect& update_region);
  void paint_board(wxDC& dc, const wxRect& update_region, wxDC& tiles_dc);
 
  void on_any_mouse_event(wxMouseEvent& event);
 
  wxBitmap board_bitmap;
  wxMemoryDC board_dc;
  wxBitmap tiles_bitmap;
  wxMemoryDC tiles_dc;
 
#ifdef __WXMSW__
  wxMemoryDC draw_bitmap_dc;
#endif
 
  GamePanel* panel;
  Game* game;
 
  wxDECLARE_EVENT_TABLE();
};