protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
int rowCount = field.getRowCount();
int columnCount = field.getColumnCount();
int xMax = field.getColumnCount() * CELL_WIDTH + 1;
int yMax = field.getRowCount() * CELL_HEIGHT + 1;
// Background.
g.setColor(BACKGROUND_COLOR);
g.fillRect(0, 0, xMax, yMax);
// Lines.
g.setColor(LINE_COLOR);
g2.setStroke(new BasicStroke(1));
for (int row = 0; row <= rowCount; row++) {
int y = row * CELL_HEIGHT;
g.drawLine(0, y, xMax, y);
}
for (int col = 0; col <= columnCount; col++) {
int x = col * CELL_WIDTH;
g.drawLine(x, 0, x, yMax);
}
g2.setStroke(new BasicStroke(2));
// Cell contents.
for (int row = 0; row < rowCount; row++) {
int y0 = row * CELL_HEIGHT + EDGE_OFFSET;
int y1 = (row + 1) * CELL_HEIGHT - EDGE_OFFSET;
for (int col = 0; col < columnCount; col++) {
int x0 = col * CELL_WIDTH + EDGE_OFFSET;
int x1 = (col + 1) * CELL_WIDTH - EDGE_OFFSET;
CellState state = field.getCell(row, col).getState();
if (state == null) continue;
switch (state) {
case CROSSED:
g.setColor(CROSS_COLOR);
g.drawLine(x0, y0, x1, y1);
g.drawLine(x1, y0, x0, y1);
break;
case FILLED:
g.setColor(FILL_COLOR);
g.fillRect(x0, y0, x1 - x0, y1 - y0);
break;
}
}
}
}
public Dimension getPreferredSize() {
return new Dimension(
field.getColumnCount() * CELL_WIDTH + 1, field.getRowCount() * CELL_HEIGHT + 1);
}