Java 边界工厂和金属L&;F问题
我看到一种奇怪的行为。L&F套装是金属的 setLookAndFeel(“javax.swing.plaf.metal.MetalLookAndFeel”) 如果在JPanel上设置边框border1,则在同一JPanel上将边框更改为border2,当工具提示经过border2时,重新绘制border1。这仅发生在L&F金属上,带有LineBorder、TitleBorder…Java 边界工厂和金属L&;F问题,java,swing,border,Java,Swing,Border,我看到一种奇怪的行为。L&F套装是金属的 setLookAndFeel(“javax.swing.plaf.metal.MetalLookAndFeel”) 如果在JPanel上设置边框border1,则在同一JPanel上将边框更改为border2,当工具提示经过border2时,重新绘制border1。这仅发生在L&F金属上,带有LineBorder、TitleBorder…公共类BorderTest{ public class BorderTest { private JFrame jF
公共类BorderTest{
public class BorderTest {
private JFrame jFrame;
private Container contentPane;
private ColorsBoard colorsBoard;
public BorderTest() {
super();
ToolTipManager.sharedInstance().setInitialDelay(10);
ToolTipManager.sharedInstance().setDismissDelay(1500);
jFrame = new JFrame();
contentPane = jFrame.getContentPane();
contentPane.setLayout(new BorderLayout());
jFrame.setPreferredSize(new Dimension(700, 500));
colorsBoard = new ColorsBoard();
contentPane.add(colorsBoard, BorderLayout.CENTER);
JLabel label = new JLabel(""
+ "<html>Click two or three small squares. <br/>"
+ "LineBorder's are set. <br/>"
+ "Then pass the tooltips over the red borders. <br/>"
+ "The red LineBorders' are back to blue. <br/>"
+ "This phenomen appears only in Metal L&F. </html>");
contentPane.add(label, BorderLayout.EAST);
jFrame.pack();
jFrame.setVisible(true);
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
new BorderTest();
} catch (Exception e) {
e.printStackTrace();
}
}
}
class ColorsBoard extends JPanel {
private int squareSize = 315;
private int horizontal = 8; //number of squares H
private int vertical = 8; //number of squares V
private SquaredPanel[] squarePanels;
int index = 0;
public int lastClickedSquare = -1;
// the chess board like JPanel.
public ColorsBoard() {
squarePanels= new SquaredPanel[horizontal * vertical];
this.setPreferredSize(new Dimension(squareSize, squareSize));
setLayout(null);
}
// fill with squares (SquaredPanel)
protected synchronized void paintComponent(Graphics g) {
super.paintComponent(g);
int tileSizeH = squareSize / horizontal;
int tileSizeV = squareSize / vertical;
g.setColor(Color.LIGHT_GRAY);
g.fillRect(0, 0, getWidth(), getHeight());
for(int i = 0; i < horizontal*vertical; i++) {
squarePanels[i] = new SquaredPanel(this);
}
index = 0;
for (int i = 0; i < horizontal; i++) {
for (int j = 0; j < vertical; j++) {
if(index == horizontal * vertical) break;
squarePanels[index].setBackground(Color.gray);
squarePanels[index].setSize(tileSizeH - 1, tileSizeV - 1);
squarePanels[index].setLocation(i * tileSizeH, j * tileSizeV);
squarePanels[index].setName("index " + index);
squarePanels[index].setIndex(index);
add(squarePanels[index]);
index++;
}
}
}
public void eraseLastBlueBorder(int lastClickedSquare2) {
if (lastClickedSquare == -1) {
lastClickedSquare = lastClickedSquare2;
return;
}
if(!squarePanels[lastClickedSquare].isRed)(squarePanels[lastClickedSquare]).cleanBorder();
lastClickedSquare = lastClickedSquare2;
}
}
class SquaredPanel extends JPanel {
private String name;
protected Boolean isRed = false;
private int index;
private Border theBorder = (new LineBorder(Color.gray, 2));
protected Border getTheBorder() {
return theBorder;
}
public SquaredPanel(ColorsBoard colorsBoard) {
super();
addMouseListener(new MouseListener(){
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
colorsBoard.eraseLastBlueBorder(index);
setTitleBorder("RED");
}
public void mouseEntered(MouseEvent e) {
setToolTipText(name);
}
public void mouseExited(MouseEvent e) {
setToolTipText(null);
}
});
}
// the setBorder call
protected void setTitleBorder(String title) {
theBorder = (new LineBorder(title == "BLUE" ? Color.red : Color.blue, 2));
setBorder(theBorder);
}
public synchronized void cleanBorder() {
setTitleBorder("BLUE");
}
public void setName(String name) {
this.name = name;
}
public void setIndex(int k) {
index = k;
}
}
私有JFrame-JFrame;
专用容器内容窗格;
私人色板色板;
公共边界测试(){
超级();
ToolTimManager.sharedInstance().setInitialDelay(10);
ToolTimManager.sharedInstance().setDismissDelay(1500);
jFrame=新的jFrame();
contentPane=jFrame.getContentPane();
setLayout(新的BorderLayout());
jFrame.setPreferredSize(新尺寸(700500));
色板=新色板();
添加(颜色板、边框布局、中间);
JLabel标签=新的JLabel(“”)
+“单击两个或三个小正方形。
”
+“已设置线条边框。
”
+“然后将工具提示传递到红色边框上。
”
+“红色线条边框”恢复为蓝色。
”
+“这种现象只出现在金属L&F中。”;
添加(标签,BorderLayout.EAST);
jFrame.pack();
jFrame.setVisible(true);
}
公共静态void main(字符串[]args){
试一试{
setLookAndFeel(“javax.swing.plaf.metal.MetalLookAndFeel”);
新边界测试();
}捕获(例外e){
e、 printStackTrace();
}
}
}
类ColorsBoard扩展了JPanel{
私人int squareSize=315;
private int horizontal=8;//平方数H
private int vertical=8;//平方数V
私人方形面板[]方形面板;
int指数=0;
公共int lastClickedSquare=-1;
//像杰帕内尔这样的棋盘。
公共色板(){
方形面板=新的方形面板[水平*垂直];
此.setPreferredSize(新尺寸(squareSize,squareSize));
setLayout(空);
}
//用正方形填充(正方形面板)
受保护的组件(图形g){
超级组件(g);
int tileSizeH=平方大小/水平;
int tileSizeV=平方大小/垂直;
g、 setColor(颜色:浅灰色);
g、 fillRect(0,0,getWidth(),getHeight());
对于(int i=0;i<水平*垂直;i++){
方形面板[i]=新的方形面板(本);
}
指数=0;
对于(int i=0;i
仅在金属L&F中发生
即使没有专门设置LAF,您仍然会遇到问题
如果在JPanel上设置边框border1,则在同一JPanel上将边框更改为border2,当工具提示传递到border2上时,重新绘制border1
它与工具提示无关
只需单击两个正方形,然后调整框架大小,所有边框都会重新涂成蓝色
问题是你的ColorsBoard
类
您不应该重写paintComponent()
方法来创建组件
绘画方法仅用于绘画。
每当Swing确定需要重新绘制组件时,就会调用paintComponent()方法。这就是为什么调整帧大小也会导致问题的原因。您正在重新创建所有组件
解决方案:
setBackground(颜色.浅灰色)
设置背景同步的关键字。不需要它们
equals(…)
方法