private void ChessBoard_Paint(object sender, PaintEventArgs e)
{
GraphicsBuffer graphicsBuffer = new GraphicsBuffer();
graphicsBuffer.CreateGraphicsBuffer(e.Graphics, Width, Height);
Graphics g = graphicsBuffer.Graphics;
SolidBrush solidWhiteBrush = new SolidBrush(Color.White);
SolidBrush solidBlackBrush = new SolidBrush(Color.Black);
Pen penBlack = new Pen(Color.Black, 1);
Pen penHightlight = new Pen(Color.Black, 2);
Pen penDestination = new Pen(Color.Yellow, 2);
Pen penValidMove = new Pen(Color.Black, 2);
Pen penEnPassant = new Pen(Color.DeepPink, 1);
const int buffer = 10;
if (Width < Height)
{
maxHeight = Width - 5 - buffer;
boxHeight = maxHeight / 8;
}
else
{
maxHeight = Height - 5 - buffer;
boxHeight = maxHeight / 8;
}
g.Clear(BackColor);
try
{
int selectedX;
int selectedY;
//Draw Chess Board
for (byte y = 0; y < 8; y++)
{
for (byte x = 0; x < 8; x++)
{
if ((x + y) % 2 == 0)
{
g.FillRectangle(solidWhiteBrush, (x * boxHeight) + buffer, (y * boxHeight), boxHeight, boxHeight);
}
else
{
Rectangle drawArea1 = new Rectangle((x * boxHeight) + buffer, (y * boxHeight), boxHeight, boxHeight);
LinearGradientBrush linearBrush = new LinearGradientBrush(
drawArea1, Color.Gainsboro, Color.Silver, LinearGradientMode.ForwardDiagonal);
g.FillRectangle(linearBrush, (x * boxHeight) + buffer, (y * boxHeight), boxHeight, boxHeight);
}
g.DrawRectangle(penBlack, (x * boxHeight) + buffer, (y * boxHeight), boxHeight, boxHeight);
}
}
for (byte i = 0; i < 8; i++)
{
g.DrawString((8 - i).ToString(), new Font("Verdana", 8), solidBlackBrush, 0, (i * boxHeight) + buffer);
g.DrawString(GetColumnFromInt(i + 1).ToString(), new Font("Verdana", 8), solidBlackBrush, (i * boxHeight) + (boxHeight / 2) + 3, maxHeight - 1);
}
//Draw Pieces
for (byte column = 0; column < 8; column++)
{
for (byte row = 0; row < 8; row++)
{
ChessPieceType chessPieceType = engine.GetPieceTypeAt(column, row);
if (chessPieceType != ChessPieceType.None)
{
ChessPieceColor chessPieceColor = engine.GetPieceColorAt(column, row);
bool selected = engine.GetChessPieceSelected(column, row);
int x = (column) * boxHeight;
int y = (row) * boxHeight;
if (chessPieceColor == ChessPieceColor.White)
{
if (chessPieceType == ChessPieceType.Pawn)
{
g.DrawImage(Resources.WPawn, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Rook)
{
g.DrawImage(Resources.WRook, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Knight)
{
g.DrawImage(Resources.WKnight, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Bishop)
{
g.DrawImage(Resources.WBishop, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Queen)
{
g.DrawImage(Resources.WQueen, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.King)
{
g.DrawImage(Resources.WKing, x + buffer, y, boxHeight, boxHeight);
}
}
else
{
if (chessPieceType == ChessPieceType.Pawn)
{
g.DrawImage(Resources.BPawn, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Rook)
{
g.DrawImage(Resources.BRook, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Knight)
{
g.DrawImage(Resources.BKnight, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Bishop)
{
g.DrawImage(Resources.BBishop, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.Queen)
{
g.DrawImage(Resources.BQueen, x + buffer, y, boxHeight, boxHeight);
}
else if (chessPieceType == ChessPieceType.King)
{
g.DrawImage(Resources.BKing, x + buffer, y, boxHeight, boxHeight);
}
}
if (selected)
{
selectedX = ((column) * boxHeight) + buffer;
//selectedY = (8 - Column - 1)*boxHeight;
//selectedX = ((8-column-1) * boxHeight) + buffer;
selectedY = (row) * boxHeight;
g.DrawRectangle(penHightlight, selectedX, selectedY, boxHeight - 1, boxHeight - 1);
//Draw Valid Moves
if (engine.GetValidMoves(column, row) != null)
{
foreach (byte[] sqr in engine.GetValidMoves(column, row))
{
int moveY = (sqr[1]) * boxHeight;
int moveX = (sqr[0] * boxHeight) + buffer;
g.DrawRectangle(penValidMove, moveX, moveY, boxHeight - 1, boxHeight - 1);
}
}
}
if (engine.GetEnPassantMoves()[0] > 0)
{
int moveY = (engine.GetEnPassantMoves()[1]) * boxHeight;
int moveX = (engine.GetEnPassantMoves()[0] * boxHeight) + buffer;
g.DrawRectangle(penEnPassant, moveX, moveY, boxHeight - 1, boxHeight - 1);
}
}
}
}
if (currentDestination.Selected)
{
selectedY = (currentDestination.Row) * boxHeight;
selectedX = ((currentDestination.Column) * boxHeight) + buffer;
g.DrawRectangle(penDestination, selectedX, selectedY, boxHeight - 1, boxHeight - 1);
}
graphicsBuffer.Render(CreateGraphics());
g.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error Drawing Chess Board", MessageBoxButtons.OK);
}
}