我正在编写一个小游戏，使用SwingforGUI并且遇到了问题。我发布了截图，以便您更好地了解情况。
起初，我只有使用GridLayout.
但是，我需要添加一个面板来显示分数，所以我放弃GridLayout了GridBagLayout. 我JPanel为分数正确定位了新的，并在其中添加了 2JTextArea以显示结果。
问题是每次其中一个玩家移动时（因此棋盘会被重新绘制以反映其新状态），文本区域会闪烁并被棋盘部分覆盖（见截图）。知道问题可能是什么吗？我已经设置了所有组件的首选大小并尝试使用setOpaque，但无济于事。
主布局持有者的代码。
public class BoardLayout extends JFrame implements ModelObserver {
/**
* {@value}
*/
private static final long serialVersionUID = 5834762299789973250L;
/**
* {@value}
*/
private static final int RESULTS_PANEL_HEIGHT = 100;
private final BoardEventsListener eventsListener;
private final ResultsLayout resultsLayout;
private class CellMouseListener implements MouseListener {
private final int cellIndex;
public CellMouseListener(final int index) {
cellIndex = index;
}
@Override
public void mouseClicked(final MouseEvent event) {
eventsListener.onCellSelected(cellIndex);
}
@Override
public void mouseEntered(final MouseEvent event) {
// blank
}
@Override
public void mouseExited(final MouseEvent event) {
// blank
}
@Override
public void mousePressed(final MouseEvent event) {
// blank
}
@Override
public void mouseReleased(final MouseEvent event) {
// blank
}
}
public BoardLayout(final BoardEventsListener listener) throws HeadlessException {
this(listener, "", null);
}
public BoardLayout(GraphicsConfiguration graphicsConfiguration) {
this(null, "", graphicsConfiguration);
}
public BoardLayout(final BoardEventsListener listener, String title,
GraphicsConfiguration graphicsConfiguration) {
super(title, graphicsConfiguration);
eventsListener = listener;
setLayout(new GridBagLayout());
setBoardSize();
populateCells();
resultsLayout = attachResultsLayout();
resultsLayout.setOpaque(true);
setVisible(true);
}
private ResultsLayout attachResultsLayout() {
final ResultsLayout resultsLayout = new ResultsLayout(Game.BOARD_COLUMN_COUNT
* BoardCellLayout.WIDTH_BOARD_CELL, RESULTS_PANEL_HEIGHT);
final GridBagConstraints constraints = new GridBagConstraints();
constraints.gridwidth = GridBagConstraints.REMAINDER;
constraints.gridheight = GridBagConstraints.REMAINDER;
constraints.gridx = 0;
constraints.gridy = 8;
getContentPane().add(resultsLayout, constraints, 64);
return resultsLayout;
}
private void setBoardSize() {
final Dimension boardDimension = getBoardDimension();
setMinimumSize(boardDimension);
setSize(boardDimension);
setResizable(false);
}
private void populateCells() {
final Container container = getContentPane();
for (int i = 0; i < Game.BOARD_ROW_COUNT; ++i) {
for (int j = 0; j < Game.BOARD_COLUMN_COUNT; ++j) {
final BoardCellLayout currentCell = new BoardCellLayout();
final int cellIndex = i * Game.BOARD_COLUMN_COUNT + j;
final GridBagConstraints constraints = new GridBagConstraints();
constraints.gridx = j;
constraints.gridy = i;
container.add(currentCell, constraints, cellIndex);
currentCell.setOpaque(true);
currentCell.addMouseListener(new CellMouseListener(cellIndex));
}
}
}
private Dimension getBoardDimension() {
final Dimension boardDimension = new Dimension(Game.BOARD_COLUMN_COUNT
* BoardCellLayout.WIDTH_BOARD_CELL, (Game.BOARD_ROW_COUNT + 1)
* BoardCellLayout.HEIGHT_BOARD_CELL);
return boardDimension;
}
public BoardLayout(String title) throws HeadlessException {
this(null, title, null);
}
@Override
public void setVisible(final boolean isVisible) {
super.setVisible(isVisible);
setBackground(Color.WHITE);
pack();
}
@Override
public void onModelChanged(Collection<Cell> changedCells, final int whiteDiscsCount,
final int blackDiscsCount) {
for (final Cell cell : changedCells) {
final BoardCellLayout boardCell = getCellAt(cell.getIndex());
boardCell.take(cell.getOwner());
}
resultsLayout.onResultChanged(whiteDiscsCount, blackDiscsCount);
}
@Override
public void onNextMovesAcquired(Collection<Cell> nextMoves) {
clearCellHighlight();
for (final Cell cell : nextMoves) {
final BoardCellLayout boardCell = getCellAt(cell.getIndex());
boardCell.highlight();
}
}
private void clearCellHighlight() {
final Container container = getContentPane();
for (int i = 0; i < container.getComponentCount() - 1; ++i) {
final BoardCellLayout boardCellLayout = (BoardCellLayout) container.getComponent(i);
boardCellLayout.clearHighlight();
}
}
private BoardCellLayout getCellAt(final int index) {
final Container container = getContentPane();
return (BoardCellLayout) container.getComponent(index);
}
}
面板代码，保存结果：
public class ResultsLayout extends JPanel {
/**
* {@value}
*/
private static final long serialVersionUID = 8379710427718395507L;
private final ResultsTextView whiteTextView;
private final ResultsTextView blackTextView;
public ResultsLayout(final int width, final int height) {
super(new GridLayout(2, 1));
setVisible(true);
final Dimension dimension = new Dimension(width, height);
setMinimumSize(dimension);
setPreferredSize(dimension);
setSize(dimension);
whiteTextView = new ResultsTextView(Player.WHITE);
blackTextView = new ResultsTextView(Player.BLACK);
add(whiteTextView, 0);
add(blackTextView, 1);
}
public void onResultChanged(final int whiteDiscsCount, final int blackDiscsCount) {
whiteTextView.setDiscCount(whiteDiscsCount);
blackTextView.setDiscCount(blackDiscsCount);
}
}
JTextArea 的代码，保存结果：
public class ResultsTextView extends JTextArea {
/**
* {@value}
*/
private static final long serialVersionUID = -6354085779793155063L;
/**
* {@value}
*/
public static final String BACKGROUND_COLOR = "#066f02";
private static final int START_DISCS_NUMBER = 2;
private final Player player;
public ResultsTextView(final Player player) {
super();
setEditable(false);
setBackground(Color.decode(BACKGROUND_COLOR));
this.player = player;
setText(player.toString() + " result is: " + START_DISCS_NUMBER);
final Dimension dimension = new Dimension(100, 20);
setPreferredSize(dimension);
setMinimumSize(dimension);
setMaximumSize(dimension);
}
public void setDiscCount(final int discCount) {
setText(player.toString() + " result is:" + discCount);
}
}