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/////////////////////////////////////////////////////////////////////////////
// Name: samples/event/chessboard.h
// Purpose: Part of wxWidgets event sample, shows how to create a new wxEvent class
// Author: PB <pbfordev@gmail.com>
// Created: 2019-10-29
// Copyright: (c) 2019 wxWidgets development team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_CHESSBOARD_H_
#include "wx/wx.h"
// A chessboard consists of 8x8 squares organized
// in columns (called files) and rows (called ranks).
// In a 2D view, files are labeled from left to right
// 'a' to 'h' while ranks are numbered from bottom to
// top 1 to 8.
// ChessBoardEvent tells us something happened on
// the chessboard. Either a square was clicked
// (myEVT_CHESSBOARD_CLICKED) or the mouse cursor was dragged
// from one square to another (myEVT_CHESSBOARD_DRAGGED).
class ChessBoardEvent : public wxCommandEvent
{
public:
ChessBoardEvent(wxEventType commandEventType = wxEVT_NULL, int id = 0)
: wxCommandEvent(commandEventType, id),
m_file('a'), m_rank(1), m_fileTo('a'), m_rankTo(1)
{}
// myEVT_CHESSBOARD_CLICKED: Returns File/Rank for the square clicked.
// myEVT_CHESSBOARD_DRAGGED: Returns File/Rank for the square
// the mouse cursor was dragged from.
char GetFile() const { return m_file; }
wxUint8 GetRank() const { return m_rank; }
// Valid only for myEVT_CHESSBOARD_DRAGGED,
// returns File/Rank for the square where the mouse cursor was dragged to.
char GetFileTo() const { return m_fileTo; }
wxUint8 GetRankTo() const { return m_rankTo; }
void SetFile(char file) { m_file = file; }
void SetRank(wxUint8 rank) { m_rank = rank; }
void SetFileTo(char file) { m_fileTo = file; }
void SetRankTo(wxUint8 rank) { m_rankTo = rank; }
virtual wxEvent* Clone() const wxOVERRIDE { return new ChessBoardEvent(*this); }
private:
char m_file;
wxUint8 m_rank;
char m_fileTo;
wxUint8 m_rankTo;
};
// Declare new event types,
// the matching definitions are in chessboard.cpp.
wxDECLARE_EVENT(myEVT_CHESSBOARD_CLICKED, ChessBoardEvent);
wxDECLARE_EVENT(myEVT_CHESSBOARD_DRAGGED, ChessBoardEvent);
// The following typedef and macro are needed only when the new event
// class is to be used with event table macros or the legacy Connect(),
// to cast the type of a function handling it to the type expected by
// the event table machinery, see its use in EVT_CHESSBOARD_xxx below.
// I.e., when only Bind() is going to be used you do not need them.
typedef void (wxEvtHandler::*ChessBoardEventFunction)(ChessBoardEvent&);
#define ChessBoardEventHandler(func) wxEVENT_HANDLER_CAST(ChessBoardEventFunction, func)
// These defines are needed only if the new event is to be used with
// event tables, i.e., when only Bind() is going to be used you do not need them.
#define EVT_CHESSBOARD_CLICKED(id, func) \
wx__DECLARE_EVT1(myEVT_CHESSBOARD_CLICKED, id, ChessBoardEventHandler(func))
#define EVT_CHESSBOARD_DRAGGED(id, func) \
wx__DECLARE_EVT1(myEVT_CHESSBOARD_DRAGGED, id, ChessBoardEventHandler(func))
// Dialog displaying the chessboard
// and handling ChessBoardEvents
class MyChessBoardDialog : public wxDialog
{
public:
MyChessBoardDialog(wxWindow* parent);
private:
void OnChessBoardClicked(ChessBoardEvent& event);
void OnChessBoardDragged(ChessBoardEvent& event);
// Just for demonstration, we will use an event table
// for myEVT_CHESSBOARD_CLICKED.
wxDECLARE_EVENT_TABLE();
};
#endif // #ifndef _WX_CHESSBOARD_H_
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