我正在审核这个问题: How to change style (color, font) of a single JTree node
但我的问题不同。
我有这个:
String grayPlain = "Snippet Gray Color and Plain Font Style";
String blackPlain = "Black Color and Plain Font Style";
String blackBold = "Snippet Black Color and Bold Font Style";
String SomeString = grayPlain + blackPlain + blackBold;
new DefaultMutableTreeNode(SomeString, false);
如何根据之前的描述更改字符串的字体样式和颜色只有一个DefaultMutableTreeNode
?
这方面的一个例子是搜索 notepad ++ 的结果。 同一行在同一结果中有两种颜色。
现在,我不仅要使用两种颜色,还要使用三种颜色,并将文本的某些部分更改为粗体。
也许像JTextPane
这样的东西会使用多种风格......
但我不知道从哪里开始。
答案 0 :(得分:0)
以此帖为基础:http://esus.com/jtextarea-node-jtree/
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.event.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
public class JTreeUsingJTextPane extends JFrame {
public JTreeUsingJTextPane() {
Font plain = new Font("Monospaced", Font.PLAIN, 10);
Font bold = new Font("Monospaced", Font.BOLD, 10);
Font italic = new Font("Monospaced", Font.ITALIC, 10);
Font bold_italic = new Font("Lucida Sans Typewriter", Font.BOLD + Font.ITALIC, 14);
DefaultMutableTreeNode defaultMutableTreeNode =
new DefaultMutableTreeNode("JTextPane on JTree");
DecoratedText nonDecoratedText = new DecoratedText(
" Single text without Decoration ");
DecoratedText singleDecoratedText = new DecoratedText(
" Lucida Sans Typewriter, Font.BOLD + Font.ITALIC, Size:14 ",
bold_italic
);
DecoratedText[] arrayDecoratedText = new DecoratedText[] {
new DecoratedText(Color.WHITE, " WHITE Background & Font.BOLD ", bold),
new DecoratedText(" WHITE Foreground ", Color.WHITE),
new DecoratedText(Color.LIGHT_GRAY, " LIGHT_GRAY Background & Font.PLAIN ", plain),
new DecoratedText(" Font.ITALIC ", italic),
new DecoratedText(Color.DARK_GRAY, " DARK_GRAY Background.")
};
DecoratedText[] arrayColoreText = new DecoratedText[] {
new DecoratedText(Color.GRAY, " GRAY Background, RED Foreground ", Color.RED),
new DecoratedText(Color.WHITE, " WHITE Background, BLUE Foreground ", Color.BLUE),
new DecoratedText(Color.BLACK, " BLACK Background, GREEN Foreground ", Color.GREEN)
};
DefaultMutableTreeNode singleDecorated = new DefaultMutableTreeNode("Singles DecoratedText");
singleDecorated.add(new DefaultMutableTreeNode(nonDecoratedText));
singleDecorated.add(new DefaultMutableTreeNode(singleDecoratedText));
DefaultMutableTreeNode arrayDecorated = new DefaultMutableTreeNode("DecoratedText's Arrays");
arrayDecorated.add(new DefaultMutableTreeNode(arrayDecoratedText));
arrayDecorated.add(new DefaultMutableTreeNode(arrayColoreText));
defaultMutableTreeNode.add(new DefaultMutableTreeNode("opening String"));
defaultMutableTreeNode.add(singleDecorated);
defaultMutableTreeNode.add(arrayDecorated);
defaultMutableTreeNode.add(new DefaultMutableTreeNode("closing String"));
JTree tree = new JTree(defaultMutableTreeNode);
tree.setCellRenderer(new TextPaneDefaultTreeCellRenderer());
getContentPane().add(new JScrollPane(tree));
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
System.exit(0);
}
});
}
public static void main(String []args) {
JTreeUsingJTextPane app = new JTreeUsingJTextPane();
app.setSize(840, 240);
app.setVisible(true);
}
}
class TextPaneDefaultTreeCellRenderer extends DefaultTreeCellRenderer {
TextPaneScrollPane textPaneScrollPane = new TextPaneScrollPane();
public TextPaneDefaultTreeCellRenderer() {
textPaneScrollPane.setBackgroundNonSelectionColor(getBackgroundNonSelectionColor());
textPaneScrollPane.setBackgroundSelectionColor(getBackgroundSelectionColor());
textPaneScrollPane.setTextNonSelectionColor(getTextNonSelectionColor());
textPaneScrollPane.setTextSelectionColor(getTextSelectionColor());
}
@Override public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
if (leaf) {
return textPaneScrollPane.getTreeCellRendererComponent(tree, value,
selected, expanded, leaf, row, hasFocus);
} else {
return super.getTreeCellRendererComponent(tree, value, selected,
expanded, leaf, row, hasFocus);
}
}
}
class TextPaneScrollPane extends JScrollPane implements TreeCellRenderer {
JTextPane textPane;
Color backgroundNonSelectionColor;
Color backgroundSelectionColor;
Color textNonSelectionColor;
Color textSelectionColor;
public TextPaneScrollPane() {
textPane = new JTextPane();
getViewport().add(textPane);
}
public void setBackgroundNonSelectionColor(Color color) {
this.backgroundNonSelectionColor = color;
}
public void setBackgroundSelectionColor(Color color) {
this.backgroundSelectionColor = color;
}
public void setTextNonSelectionColor(Color color) {
this.textNonSelectionColor = color;
}
public void setTextSelectionColor(Color color) {
this.textSelectionColor = color;
}
@Override public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
if (selected) {
setForeground(textSelectionColor);
setBackground(backgroundSelectionColor);
textPane.setForeground(textSelectionColor);
textPane.setBackground(backgroundSelectionColor);
} else {
setForeground(textNonSelectionColor);
setBackground(backgroundNonSelectionColor);
textPane.setForeground(textNonSelectionColor);
textPane.setBackground(backgroundNonSelectionColor);
}
DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
Object object = node.getUserObject();
if (object != null && object instanceof DecoratedText) {
textPane.setText("");
Document doc = textPane.getStyledDocument();
DecoratedText decText = (DecoratedText)object;
try {
doc.insertString(doc.getLength(), decText.getText(), getAttributeSet(decText));
} catch (BadLocationException ex) {
Logger.getLogger(TextPaneScrollPane.class.getName()).log(Level.SEVERE, null, ex);
}
} else if (object != null && object instanceof DecoratedText[]) {
textPane.setText("");
Document doc = textPane.getStyledDocument();
DecoratedText[] arrayDecText = (DecoratedText[])object;
for (DecoratedText decText:arrayDecText) {
try {
doc.insertString(doc.getLength(), decText.getText(), getAttributeSet(decText));
} catch (BadLocationException ex) {
Logger.getLogger(TextPaneScrollPane.class.getName()).log(Level.SEVERE, null, ex);
}
}
} else {
//textPane = new JTextPane(); // Needed because take the last StyleConstants used!
//textPane.setText(""+object);
//return new JLabel(object.toString());
return new DefaultTreeCellRenderer().getTreeCellRendererComponent(tree,
value, leaf, expanded, leaf, row, hasFocus);
}
return textPane;
}
private SimpleAttributeSet getAttributeSet(DecoratedText decoratedText) {
SimpleAttributeSet attributeSet = new SimpleAttributeSet();
if (decoratedText != null) {
if (decoratedText.getText() != null) {
}
if (decoratedText.getBackground() != null) {
StyleConstants.setBackground(attributeSet, decoratedText.getBackground());
}
if (decoratedText.getForeground() != null) {
StyleConstants.setForeground(attributeSet, decoratedText.getForeground());
}
if (decoratedText.getFont() != null) {
StyleConstants.setFontFamily(attributeSet, decoratedText.getFont().getFamily());
StyleConstants.setItalic(attributeSet, decoratedText.getFont().isItalic());
StyleConstants.setBold(attributeSet, decoratedText.getFont().isBold());
StyleConstants.setFontSize(attributeSet, decoratedText.getFont().getSize());
}
}
return attributeSet;
}
}
class DecoratedText {
private String text;
private Color background = new JLabel().getBackground();
private Color foreground = new JLabel().getForeground();
private Font font = new JLabel().getFont();
public DecoratedText(String text) {
this.text = text;
}
public DecoratedText(String text, Font font) {
this.text = text;
this.font = font;
}
public DecoratedText(String text, Color foreground) {
this.text = text;
this.foreground = foreground;
}
public DecoratedText(String text, Color foreground, Font font) {
this.text = text;
this.foreground = foreground;
this.font = font;
}
public DecoratedText(Color background, String text) {
this.background = background;
this.text = text;
}
public DecoratedText(Color background, String text, Font font) {
this.background = background;
this.text = text;
this.font = font;
}
public DecoratedText(Color background, String text, Color foreground) {
this.background = background;
this.text = text;
this.foreground = foreground;
}
public DecoratedText(Color background, String text, Color foreground, Font font) {
this.background = background;
this.text = text;
this.foreground = foreground;
this.font = font;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Color getBackground() {
return background;
}
public void setBackground(Color background) {
this.background = background;
}
public Color getForeground() {
return foreground;
}
public void setForeground(Color foreground) {
this.foreground = foreground;
}
public Font getFont() {
return font;
}
public void setFont(Font font) {
this.font = font;
}
@Override
public String toString() {
return "DecoratedText{" + "text=" + text + ", background=" + background
+ ", foreground=" + foreground + ", font=" + font + '}';
}
}