抱歉我的英文不好,我正在为一家公司开发一个应用程序,我希望能够指出要在JtextFields中输入的信息,但问题是这个指示有时很长,所以我发现一个带有工具提示自定义的类,它允许转到工具提示文本中的行,但是我找不到如何将它添加到我的文本字段中。 我试试这段代码:
JMultiLineToolTip mltt = new JMultiLineToolTip();
mltt.setTipText("Write an extention or anything you want, if the string apeare in file's name,\n the file will be added in result ");
textField = new JTextField();
textField.setBounds(134, 104, 210, 20);
textField.setColumns(10);
textField.add(mltt);
//textField.setToolTipText("Write an extention or anything you want, if the string apeare in file's name,\n the file will be added in result ");
request.add(textField);
这里是JMultiLineToolTip的代码
public class JMultiLineToolTip extends JToolTip {
private static final long serialVersionUID = 7813662474312183098L;
public JMultiLineToolTip() {
updateUI();
}
public void updateUI() {
setUI(MultiLineToolTipUI.createUI(this));
}
public void setColumns(int columns) {
this.columns = columns;
this.fixedwidth = 0;
}
public int getColumns() {
return columns;
}
public void setFixedWidth(int width) {
this.fixedwidth = width;
this.columns = 0;
}
public int getFixedWidth() {
return fixedwidth;
}
protected int columns = 0;
protected int fixedwidth = 0;
}
class MultiLineToolTipUI extends BasicToolTipUI {
static MultiLineToolTipUI sharedInstance = new MultiLineToolTipUI();
Font smallFont;
static JToolTip tip;
protected CellRendererPane rendererPane;
private static JTextArea textArea;
public static ComponentUI createUI(JComponent c) {
return sharedInstance;
}
public MultiLineToolTipUI() {
super();
}
public void installUI(JComponent c) {
super.installUI(c);
tip = (JToolTip) c;
rendererPane = new CellRendererPane();
c.add(rendererPane);
}
public void uninstallUI(JComponent c) {
super.uninstallUI(c);
c.remove(rendererPane);
rendererPane = null;
}
public void paint(Graphics g, JComponent c) {
Dimension size = c.getSize();
textArea.setBackground(c.getBackground());
rendererPane.paintComponent(g, textArea, c, 1, 1, size.width - 1, size.height - 1, true);
}
public Dimension getPreferredSize(JComponent c) {
String tipText = ((JToolTip) c).getTipText();
if (tipText == null) return new Dimension(0, 0);
textArea = new JTextArea(tipText);
rendererPane.removeAll();
rendererPane.add(textArea);
textArea.setWrapStyleWord(true);
int width = ((JMultiLineToolTip) c).getFixedWidth();
int columns = ((JMultiLineToolTip) c).getColumns();
if (columns > 0) {
textArea.setColumns(columns);
textArea.setSize(0, 0);
textArea.setLineWrap(true);
textArea.setSize(textArea.getPreferredSize());
} else if (width > 0) {
textArea.setLineWrap(true);
Dimension d = textArea.getPreferredSize();
d.width = width;
d.height++;
textArea.setSize(d);
} else
textArea.setLineWrap(false);
Dimension dim = textArea.getPreferredSize();
dim.height += 1;
dim.width += 1;
return dim;
}
public Dimension getMinimumSize(JComponent c) {
return getPreferredSize(c);
}
public Dimension getMaximumSize(JComponent c) {
return getPreferredSize(c);
}
答案 0 :(得分:0)
假设您从Yoshiko-app获取了此代码,可以在同一github上找到一些示例:
String pathTip = "Sets the tmp path.";
JPanel pathPanel = new JPanel() {
private static final long serialVersionUID = 1L;
public JToolTip createToolTip() {
return new JMultiLineToolTip();
}
};
pathPanel.setLayout(new BorderLayout());
pathPanel.setToolTipText(pathTip);
您需要为JtextField
调整此代码答案 1 :(得分:0)
只需覆盖文本字段的createTooltip
方法:
textField = new JTextField() {
public JToolTip createToolTip() {
mltt.setComponent(this);
return mltt;
}
};
请注意,工具提示对象必须声明为final
,以便可以在上面的匿名类中使用:
final JMultiLineToolTip mltt = new JMultiLineToolTip();