Java/Swing Components/Label — различия между версиями
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Текущая версия на 06:57, 1 июня 2010
Содержание
A JLabel that can be underlined, implements Scrollable
/*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the license, or (at your option) any later version.
*/
import javax.swing.*;
import java.awt.*;
/**
A <tt>JLabel</tt> that can be underlined, implements <tt>Scrollable</tt>,
may have a tooltip text equal to its text and exposes a few convenience methods
for <tt>setText()</tt>.
@author
@version $Revision: 1.3 $ $Date: 2003/08/18 07:47:20 $
*/
public class ExtendedJLabel extends JLabel implements Scrollable {
private boolean underlined = false;
private boolean autoTooltip = false;
/**
Constructor.
*/
public ExtendedJLabel() {
}
/**
Constructor.
@param text the label text.
*/
public ExtendedJLabel(String text) {
super(text);
}
public Dimension getPreferredScrollableViewportSize() {
return getSize();
}
public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction) {
return getWidth() / 10;
}
public boolean getScrollableTracksViewportWidth() {
return false;
}
public boolean getScrollableTracksViewportHeight() {
return false;
}
public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction) {
return 10;
}
/**
Check whether this label is underlined.
@return underlined or not
*/
public boolean isUnderlined() {
return underlined;
}
/**
Set whether this label is underlined.
@param underlined underlined or not
*/
public void setUnderlined(boolean underlined) {
this.underlined = underlined;
repaint();
}
/**
Check whether the tooltip text is automatically equal
to the text of this label or not.
@return equal or not
*/
public boolean getAutoTooltip() {
return autoTooltip;
}
/**
Set whether the tooltip text is automatically equal
to the text of this label or not.
@param autoTooltip equal or not
*/
public void setAutoTooltip(boolean autoTooltip) {
this.autoTooltip = autoTooltip;
setToolTipText(getText());
}
public void setText(String text) {
super.setText(text);
if (autoTooltip) {
setToolTipText(text);
}
}
/**
Convenience method for calling <tt>setText()</tt> with a <tt>short</tt>.
@param number the <tt>short</tt>
*/
public void setText(short number) {
setText(String.valueOf(number));
}
/**
Convenience method for calling <tt>setText()</tt> with a <tt>int</tt>.
@param number the <tt>int</tt>
*/
public void setText(int number) {
setText(String.valueOf(number));
}
/**
Convenience method for calling <tt>setText()</tt> with a <tt>double</tt>.
@param number the <tt>double</tt>
*/
public void setText(double number) {
setText(String.valueOf(number));
}
/**
Convenience method for calling <tt>setText()</tt> with a <tt>float</tt>.
@param number the <tt>float</tt>
*/
public void setText(float number) {
setText(String.valueOf(number));
}
/**
Convenience method for calling <tt>setText()</tt> with a <tt>long</tt>.
@param number the <tt>long</tt>
*/
public void setText(long number) {
setText(String.valueOf(number));
}
public void paint(Graphics g) {
super.paint(g);
if (underlined) {
Insets i = getInsets();
FontMetrics fm = g.getFontMetrics();
Rectangle textRect = new Rectangle();
Rectangle viewRect = new Rectangle(i.left, i.top, getWidth() - (i.right + i.left), getHeight() - (i.bottom + i.top) );
SwingUtilities.layoutCompoundLabel(
this,
fm,
getText(),
getIcon(),
getVerticalAlignment(),
getHorizontalAlignment(),
getVerticalTextPosition(),
getHorizontalTextPosition(),
viewRect,
new Rectangle(),
textRect,
getText() == null ? 0 : ((Integer)UIManager.get("Button.textIconGap")).intValue()
);
int offset = 2;
if (UIManager.getLookAndFeel().isNativeLookAndFeel() && System.getProperty("os.name").startsWith("Windows")) {
offset = 1;
}
g.fillRect(textRect.x + ((Integer)UIManager.get("Button.textShiftOffset")).intValue() ,
textRect.y + fm.getAscent() + ((Integer)UIManager.get("Button.textShiftOffset")).intValue() + offset,
textRect.width,
1);
}
}
}
Bevel Text
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.FontUIResource;
public class jexpBevelText extends JComponent implements SwingConstants {
RenderingLabel leftShadeLabel = new RenderingLabel();
RenderingLabel contentLabel = new RenderingLabel();
RenderingLabel rightShadeLabel = new RenderingLabel();
boolean raisedBevel= true;
int depthX = 1;
int depthY = 1;
RenderingHints renderingHints;
String text = "jexp";
Color foregroundColor;
Color defaultForeground = new Color(132, 132, 204);
Font font = new FontUIResource(Font.decode("Dialog-Plain-28"));;
public jexpBevelText() {
setLayout(null);
add(contentLabel);
add(leftShadeLabel);
add(rightShadeLabel);
reSize();
setToolTipText(getToolTipText());
setFont(font);
setBackground(getBackground());
setForeground(getForeground());
setText(getText());
setSize(getPreferredSize());
setEnabled(isEnabled());
setOpaque(isOpaque());
setHorizontalAlignment(0);
renderingHints = new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
renderingHints.put(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
}
public jexpBevelText(String s) {
this();
setText(s);
setSize(getPreferredSize());
}
public void setToolTipText(String s) {
super.setToolTipText(s);
leftShadeLabel.setToolTipText(s);
contentLabel.setToolTipText(s);
rightShadeLabel.setToolTipText(s);
}
public void updateUI() {
super.updateUI();
leftShadeLabel.updateUI();
contentLabel.updateUI();
rightShadeLabel.updateUI();
setBackground(getBackground());
setForeground(getForeground());
setFont(font);
}
public void setRaisedBevel(boolean flag) {
raisedBevel = flag;
setForeground(getForeground());
}
public boolean isRaisedBevel() {
return raisedBevel;
}
public void setDepthX(int depth) {
depthX = depth;
setSize(getSize());
}
public int getDepthX() {
return depthX;
}
public void setDepthY(int depth) {
depthY = depth;
setSize(getSize());
}
public int getDepthY() {
return depthY;
}
public Color getBackground() {
return super.getBackground();
}
public void setBackground(Color newColor) {
Color backgroundColor = newColor;
if (backgroundColor == null || (backgroundColor instanceof ColorUIResource))
backgroundColor = UIManager.getColor("control");
super.setBackground(backgroundColor);
}
public Color getForeground() {
return foregroundColor;
}
public void setForeground(Color newColor) {
foregroundColor = newColor;
if (foregroundColor == null || (foregroundColor instanceof ColorUIResource)) {
foregroundColor = new ColorUIResource(defaultForeground);
newColor = defaultForeground;
}
contentLabel.setForeground(newColor);
if (raisedBevel) {
leftShadeLabel.setForeground(Color.white);
rightShadeLabel.setForeground(newColor.darker().darker().darker());
} else {
leftShadeLabel.setForeground(newColor.darker().darker().darker());
rightShadeLabel.setForeground(Color.white);
}
}
public Font getFont() {
if (font == null || (font instanceof FontUIResource))
font = new FontUIResource(Font.decode("Dialog-Plain-28"));
return font;
}
public void setFont(Font newFont) {
font = newFont;
leftShadeLabel.setFont(font);
contentLabel.setFont(font);
rightShadeLabel.setFont(font);
}
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
leftShadeLabel.setEnabled(enabled);
contentLabel.setEnabled(enabled);
rightShadeLabel.setEnabled(enabled);
}
public void setOpaque(boolean flag) {
super.setOpaque(flag);
leftShadeLabel.setOpaque(false);
contentLabel.setOpaque(false);
rightShadeLabel.setOpaque(false);
updateUI();
}
public void setVisible(boolean isVisible) {
super.setVisible(isVisible);
leftShadeLabel.setVisible(isVisible);
contentLabel.setVisible(isVisible);
rightShadeLabel.setVisible(isVisible);
}
public void setText(String s) {
text = s;
leftShadeLabel.setText(s);
contentLabel.setText(s);
rightShadeLabel.setText(s);
}
public String getText() {
return text;
}
public Dimension getPreferredSize() {
JLabel jlabel = new JLabel();
jlabel.setFont(getFont());
jlabel.setBorder(getBorder());
if (renderingHints == null) {
jlabel.setText(getText() + "m");
Dimension dimension = jlabel.getPreferredSize();
dimension.width += depthX * 2;
dimension.height += depthY * 2;
return dimension;
} else {
Dimension dimension1 = jlabel.getPreferredSize();
dimension1.width += depthX * 2;
dimension1.height += depthY * 2;
boolean flag = true;
boolean flag1 = true;
FontRenderContext fontrendercontext = new FontRenderContext(null, flag, flag1);
dimension1.width += getFont().getStringBounds(getText() + "m", fontrendercontext).getWidth();
Rectangle2D rectangle2d = getFont().getMaxCharBounds(fontrendercontext);
dimension1.height += rectangle2d.getHeight();
return dimension1;
}
}
public Dimension getMinimumSize() {
return getPreferredSize();
}
public void setBorder(Border border) {
super.setBorder(border);
setSize(getSize());
}
private void reSize() {
Insets insets = new Insets(0, 0, 0, 0);
Border border = getBorder();
if (border != null)
insets = border.getBorderInsets(this);
leftShadeLabel.setLocation(insets.top, insets.left);
contentLabel.setLocation(insets.top + depthX, insets.left + depthY);
rightShadeLabel.setLocation(insets.top + depthX * 2, insets.left + depthY * 2);
}
public void setBounds(int x, int y, int width, int height) {
super.setBounds(x, y, width, height);
reSize();
Insets insets = new Insets(0, 0, 0, 0);
Border border = getBorder();
if (border != null)
insets = border.getBorderInsets(this);
int w = width - depthX * 2 - insets.left - insets.right;
int h = height - depthY * 2 - insets.top - insets.bottom;
leftShadeLabel.setSize(w, h);
contentLabel.setSize(w, h);
rightShadeLabel.setSize(w, h);
}
public void setBounds(Rectangle rectangle) {
setBounds(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
}
public void setSize(int w, int h) {
super.setSize(w, h);
reSize();
Insets insets = new Insets(0, 0, 0, 0);
Border border = getBorder();
if (border != null)
insets = border.getBorderInsets(this);
int width = w - depthX * 2 - insets.left - insets.right;
int height = h - depthY * 2 - insets.top - insets.bottom;
leftShadeLabel.setSize(width, height);
contentLabel.setSize(width, height);
rightShadeLabel.setSize(width, height);
}
public void setSize(Dimension dimension) {
setSize(dimension.width, dimension.height);
}
public final void paintInterface(Graphics g1) {
if (isOpaque()) {
g1.setColor(getBackground());
g1.fillRect(0, 0, getWidth(), getHeight());
}
super.paint(g1);
}
public void setHorizontalAlignment(int i) {
leftShadeLabel.setHorizontalAlignment(i);
contentLabel.setHorizontalAlignment(i);
rightShadeLabel.setHorizontalAlignment(i);
}
public int getHorizontalAlignment() {
return leftShadeLabel.getHorizontalAlignment();
}
public void setVerticalAlignment(int i) {
leftShadeLabel.setVerticalAlignment(i);
contentLabel.setVerticalAlignment(i);
rightShadeLabel.setVerticalAlignment(i);
}
public int getVerticalAlignment() {
return leftShadeLabel.getVerticalAlignment();
}
private void setHorizontalTextPosition(int i) {
leftShadeLabel.setHorizontalTextPosition(i);
contentLabel.setHorizontalTextPosition(i);
rightShadeLabel.setHorizontalTextPosition(i);
}
private int getHorizontalTextPosition() {
return leftShadeLabel.getHorizontalTextPosition();
}
private void setVerticalTextPosition(int i) {
if (rightShadeLabel != null) {
leftShadeLabel.setVerticalTextPosition(i);
contentLabel.setVerticalTextPosition(i);
rightShadeLabel.setVerticalTextPosition(i);
}
}
class RenderingLabel extends JLabel {
public void paint(Graphics g1) {
if (renderingHints != null && (g1 instanceof Graphics2D)) {
Graphics2D graphics2d = (Graphics2D) g1;
graphics2d.setRenderingHints(renderingHints);
}
super.paint(g1);
}
}
private int getVerticalTextPosition() {
return leftShadeLabel.getVerticalTextPosition();
}
public static void main(String[] args) {
JFrame f = new JFrame();
jexpBevelText j = new jexpBevelText();
j.setForeground(Color.RED);
f.getContentPane().add(j, "Center");
f.setSize(400, 600);
f.setVisible(true);
}
}
Gradient Label
/*
* soapUI, copyright (C) 2004-2009 eviware.ru
*
* soapUI is free software; you can redistribute it and/or modify it under the
* terms of version 2.1 of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* soapUI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details at gnu.org.
*/
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import javax.swing.JLabel;
public class GradientLabel extends JLabel
{
// ------------------------------ FIELDS ------------------------------
private Color start;
private Color end;
// --------------------------- CONSTRUCTORS ---------------------------
public GradientLabel( String text )
{
super( text );
start = Color.LIGHT_GRAY;
end = getBackground();
}
public GradientLabel( String text, Color start, Color end )
{
super( text );
this.start = start;
this.end = end;
}
// -------------------------- OTHER METHODS --------------------------
public void paint( Graphics g )
{
int width = getWidth();
int height = getHeight();
// Create the gradient paint
GradientPaint paint = new GradientPaint( 0, 0, start, width, height, end, true );
// we need to cast to Graphics2D for this operation
Graphics2D g2d = ( Graphics2D )g;
// save the old paint
Paint oldPaint = g2d.getPaint();
// set the paint to use for this operation
g2d.setPaint( paint );
// fill the background using the paint
g2d.fillRect( 0, 0, width, height );
// restore the original paint
g2d.setPaint( oldPaint );
super.paint( g );
}
}
Hyperlink Label
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;
public class JHyperlinkLabel extends JLabel {
private Color underlineColor = null;
public JHyperlinkLabel(String label) {
super(label);
setForeground(Color.BLUE.darker());
setCursor(new Cursor(Cursor.HAND_CURSOR));
addMouseListener(new HyperlinkLabelMouseAdapter());
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(underlineColor == null ? getForeground() : underlineColor);
Insets insets = getInsets();
int left = insets.left;
if (getIcon() != null)
left += getIcon().getIconWidth() + getIconTextGap();
g.drawLine(left, getHeight() - 1 - insets.bottom, (int) getPreferredSize().getWidth()
- insets.right, getHeight() - 1 - insets.bottom);
}
public class HyperlinkLabelMouseAdapter extends MouseAdapter {
@Override
public void mouseClicked(MouseEvent e) {
System.out.println(getText());
}
}
public Color getUnderlineColor() {
return underlineColor;
}
public void setUnderlineColor(Color underlineColor) {
this.underlineColor = underlineColor;
}
}
Label 3D
/*
Swing Hacks Tips and Tools for Killer GUIs
By Joshua Marinacci, Chris Adamson
First Edition June 2005
Series: Hacks
ISBN: 0-596-00907-0
Pages: 542
website: http://www.oreilly.ru/catalog/swinghks/
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.font.LineMetrics;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class RichJLabel extends JLabel {
private int tracking;
public RichJLabel(String text, int tracking) {
super(text);
this.tracking = tracking;
}
private int left_x, left_y, right_x, right_y;
private Color left_color, right_color;
public void setLeftShadow(int x, int y, Color color) {
left_x = x;
left_y = y;
left_color = color;
}
public void setRightShadow(int x, int y, Color color) {
right_x = x;
right_y = y;
right_color = color;
}
public Dimension getPreferredSize() {
String text = getText();
FontMetrics fm = this.getFontMetrics(getFont());
int w = fm.stringWidth(text);
w += (text.length() - 1) * tracking;
w += left_x + right_x;
int h = fm.getHeight();
h += left_y + right_y;
return new Dimension(w, h);
}
public void paintComponent(Graphics g) {
((Graphics2D) g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
char[] chars = getText().toCharArray();
FontMetrics fm = this.getFontMetrics(getFont());
int h = fm.getAscent();
LineMetrics lm = fm.getLineMetrics(getText(), g);
g.setFont(getFont());
int x = 0;
for (int i = 0; i < chars.length; i++) {
char ch = chars[i];
int w = fm.charWidth(ch) + tracking;
g.setColor(left_color);
g.drawString("" + chars[i], x - left_x, h - left_y);
g.setColor(right_color);
g.drawString("" + chars[i], x + right_x, h + right_y);
g.setColor(getForeground());
g.drawString("" + chars[i], x, h);
x += w;
}
}
public static void main(String[] args) {
RichJLabel label = new RichJLabel("www.jexp.ru", 0);
label.setLeftShadow(1, 1, Color.white);
label.setRightShadow(1, 1, Color.white);
label.setForeground(Color.blue);
label.setFont(label.getFont().deriveFont(140f));
label.setLeftShadow(5,5,Color.white);
label.setRightShadow(-3,-3, new Color(0xccccff));
label.setForeground(new Color(0x8888ff));
label.setFont(label.getFont().deriveFont(140f));
JFrame frame = new JFrame("RichJLabel hack");
frame.getContentPane().add(label);
frame.pack();
frame.setVisible(true);
}
public static void p(String str) {
System.out.println(str);
}
}
Label with large font and ANTIALIAS paint
/*
Swing Hacks Tips and Tools for Killer GUIs
By Joshua Marinacci, Chris Adamson
First Edition June 2005
Series: Hacks
ISBN: 0-596-00907-0
Pages: 542
website: http://www.oreilly.ru/catalog/swinghks/
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.font.LineMetrics;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class RichJLabel extends JLabel {
private int tracking;
public RichJLabel(String text, int tracking) {
super(text);
this.tracking = tracking;
}
private int left_x, left_y, right_x, right_y;
private Color left_color, right_color;
public void setLeftShadow(int x, int y, Color color) {
left_x = x;
left_y = y;
left_color = color;
}
public void setRightShadow(int x, int y, Color color) {
right_x = x;
right_y = y;
right_color = color;
}
public Dimension getPreferredSize() {
String text = getText();
FontMetrics fm = this.getFontMetrics(getFont());
int w = fm.stringWidth(text);
w += (text.length() - 1) * tracking;
w += left_x + right_x;
int h = fm.getHeight();
h += left_y + right_y;
return new Dimension(w, h);
}
public void paintComponent(Graphics g) {
((Graphics2D) g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
char[] chars = getText().toCharArray();
FontMetrics fm = this.getFontMetrics(getFont());
int h = fm.getAscent();
LineMetrics lm = fm.getLineMetrics(getText(), g);
g.setFont(getFont());
int x = 0;
for (int i = 0; i < chars.length; i++) {
char ch = chars[i];
int w = fm.charWidth(ch) + tracking;
g.setColor(left_color);
g.drawString("" + chars[i], x - left_x, h - left_y);
g.setColor(right_color);
g.drawString("" + chars[i], x + right_x, h + right_y);
g.setColor(getForeground());
g.drawString("" + chars[i], x, h);
x += w;
}
}
public static void main(String[] args) {
RichJLabel label = new RichJLabel("www.jexp.ru", 0);
label.setLeftShadow(1, 1, Color.white);
label.setRightShadow(1, 1, Color.white);
label.setForeground(Color.blue);
label.setFont(label.getFont().deriveFont(140f));
JFrame frame = new JFrame("RichJLabel hack");
frame.getContentPane().add(label);
frame.pack();
frame.setVisible(true);
}
public static void p(String str) {
System.out.println(str);
}
}
Link Label
/**
* The utillib library.
* More information is available at http://www.jinchess.ru/.
* Copyright (C) 2002 Alexander Maryanovsky.
* All rights reserved.
*
* The utillib library is free software; you can redistribute
* it and/or modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* The utillib library is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with utillib library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.awt.Cursor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;
/**
* An extension of JLabel which looks like a link and responds appropriately
* when clicked. Note that this class will only work with Swing 1.1.1 and later.
* Note that because of the way this class is implemented, getText() will not
* return correct values, user <code>getNormalText</code> instead.
*/
public class LinkLabel extends JLabel{
/**
* The normal text set by the user.
*/
private String text;
/**
* Creates a new LinkLabel with the given text.
*/
public LinkLabel(String text){
super(text);
setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
enableEvents(MouseEvent.MOUSE_EVENT_MASK);
}
/**
* Sets the text of the label.
*/
public void setText(String text){
super.setText("<html><font color=\"#0000CF\"><u>"+text+"</u></font></html>"); //$NON-NLS-1$ //$NON-NLS-2$
this.text = text;
}
/**
* Returns the text set by the user.
*/
public String getNormalText(){
return text;
}
/**
* Processes mouse events and responds to clicks.
*/
protected void processMouseEvent(MouseEvent evt){
super.processMouseEvent(evt);
if (evt.getID() == MouseEvent.MOUSE_CLICKED)
fireActionPerformed(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, getNormalText()));
}
/**
* Adds an ActionListener to the list of listeners receiving notifications
* when the label is clicked.
*/
public void addActionListener(ActionListener listener){
listenerList.add(ActionListener.class, listener);
}
/**
* Removes the given ActionListener from the list of listeners receiving
* notifications when the label is clicked.
*/
public void removeActionListener(ActionListener listener){
listenerList.remove(ActionListener.class, listener);
}
/**
* Fires an ActionEvent to all interested listeners.
*/
protected void fireActionPerformed(ActionEvent evt){
Object [] listeners = listenerList.getListenerList();
for (int i = 0; i < listeners.length; i += 2){
if (listeners[i] == ActionListener.class){
ActionListener listener = (ActionListener)listeners[i+1];
listener.actionPerformed(evt);
}
}
}
}
MultiLine Label
// This example is from the book _Java in a Nutshell_ by David Flanagan.
//Written by David Flanagan. Copyright (c) 1996 O"Reilly & Associates.
//You may study, use, modify, and distribute this example for any purpose.
//This example is provided WITHOUT WARRANTY either expressed or implied.
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.util.StringTokenizer;
public class MultiLineLabel extends Canvas {
public static final int LEFT = 0; // Alignment constants
public static final int CENTER = 1;
public static final int RIGHT = 2;
protected String[] lines; // The lines of text to display
protected int num_lines; // The number of lines
protected int margin_width; // Left and right margins
protected int margin_height; // Top and bottom margins
protected int line_height; // Total height of the font
protected int line_ascent; // Font height above baseline
protected int[] line_widths; // How wide each line is
protected int max_width; // The width of the widest line
protected int alignment = LEFT; // The alignment of the text.
// This method breaks a specified label up into an array of lines.
// It uses the StringTokenizer utility class.
protected void newLabel(String label) {
StringTokenizer t = new StringTokenizer(label, "\n");
num_lines = t.countTokens();
lines = new String[num_lines];
line_widths = new int[num_lines];
for (int i = 0; i < num_lines; i++)
lines[i] = t.nextToken();
}
// This method figures out how the font is, and how wide each
// line of the label is, and how wide the widest line is.
protected void measure() {
FontMetrics fm = getFontMetrics(getFont());
// If we don"t have font metrics yet, just return.
if (fm == null)
return;
line_height = fm.getHeight();
line_ascent = fm.getAscent();
max_width = 0;
for (int i = 0; i < num_lines; i++) {
line_widths[i] = fm.stringWidth(lines[i]);
if (line_widths[i] > max_width)
max_width = line_widths[i];
}
}
// Here are four versions of the cosntrutor.
// Break the label up into separate lines, and save the other info.
public MultiLineLabel(String label, int margin_width, int margin_height,
int alignment) {
newLabel(label);
this.margin_width = margin_width;
this.margin_height = margin_height;
this.alignment = alignment;
}
public MultiLineLabel(String label, int margin_width, int margin_height) {
this(label, margin_width, margin_height, LEFT);
}
public MultiLineLabel(String label, int alignment) {
this(label, 10, 10, alignment);
}
public MultiLineLabel(String label) {
this(label, 10, 10, LEFT);
}
// Methods to set the various attributes of the component
public void setLabel(String label) {
newLabel(label);
measure();
repaint();
}
public void setFont(Font f) {
super.setFont(f);
measure();
repaint();
}
public void setForeground(Color c) {
super.setForeground(c);
repaint();
}
public void setAlignment(int a) {
alignment = a;
repaint();
}
public void setMarginWidth(int mw) {
margin_width = mw;
repaint();
}
public void setMarginHeight(int mh) {
margin_height = mh;
repaint();
}
public int getAlignment() {
return alignment;
}
public int getMarginWidth() {
return margin_width;
}
public int getMarginHeight() {
return margin_height;
}
// This method is invoked after our Canvas is first created
// but before it can actually be displayed. After we"ve
// invoked our superclass"s addNotify() method, we have font
// metrics and can successfully call measure() to figure out
// how big the label is.
public void addNotify() {
super.addNotify();
measure();
}
// This method is called by a layout manager when it wants to
// know how big we"d like to be.
public Dimension getPreferredSize() {
return new Dimension(max_width + 2 * margin_width, num_lines
* line_height + 2 * margin_height);
}
// This method is called when the layout manager wants to know
// the bare minimum amount of space we need to get by.
public Dimension getMinimumSize() {
return new Dimension(max_width, num_lines * line_height);
}
// This method draws the label (applets use the same method).
// Note that it handles the margins and the alignment, but that
// it doesn"t have to worry about the color or font--the superclass
// takes care of setting those in the Graphics object we"re passed.
public void paint(Graphics g) {
int x, y;
Dimension d = getSize();
y = line_ascent + (d.height - num_lines * line_height) / 2;
for (int i = 0; i < num_lines; i++, y += line_height) {
switch (alignment) {
case LEFT:
x = margin_width;
break;
case CENTER:
default:
x = (d.width - line_widths[i]) / 2;
break;
case RIGHT:
x = d.width - margin_width - line_widths[i];
break;
}
g.drawString(lines[i], x, y);
}
}
}
Multi Line Label extends JComponent
/*
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 1997,2002 Elmar Grom
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import javax.swing.*;
import java.awt.*;
import java.util.Vector;
/*---------------------------------------------------------------------------*/
/**
* <BR>
* <code>MultiLineLabel</code> may be used in place of javax.swing.JLabel. <BR>
* <BR>
* This class implements a component that is capable of displaying multiple lines of text. Line
* breaks are inserted automatically whenever a line of text extends beyond the predefined maximum
* line length. Line breaks will only be inserted between words, except where a single word is
* longer than the maximum line length. Line breaks may be forced at any location in the text by
* inserting a newline (\n). White space that is not valuable (i.e. is placed at the beginning of a
* new line or at the very beginning or end of the text) is removed. <br>
* <br>
* <b>Note:</b> you can set the maximum width of the label either through one of the constructors
* or you can call <code>setMaxWidth()</code> explicitly. If this is not set,
* <code>MultiLineLabel</code> will derive its width from the parent component.
*
* @author Elmar Grom
* @version 1.0 / 04-13-02
*/
/*---------------------------------------------------------------------------*
* Reviving some old code here that was written before there was swing.
* The original was written to work with awt. I had to do some masaging to
* make it a JComponent and I hope it behaves like a reasonably good mannered
* swing component.
*---------------------------------------------------------------------------*/
public class MultiLineLabel extends JComponent
{
/**
*
*/
private static final long serialVersionUID = 4051045255031894837L;
public static final int LEFT = 0; // alignment constants
public static final int CENTER = 1;
public static final int RIGHT = 2;
public static final int DEFAULT_MARGIN = 10;
public static final int DEFAULT_ALIGN = LEFT;
public static final int LEAST_ALLOWED = 200; // default setting for
// maxAllowed
private static final int FOUND = 0; // constants for string search.
private static final int NOT_FOUND = 1;
private static final int NOT_DONE = 0;
private static final int DONE = 1;
private static final char[] WHITE_SPACE = {" ", "\n", "\t"};
private static final char[] SPACES = {" ", "\t"};
private static final char NEW_LINE = "\n";
protected Vector<String> line = new Vector<String>();// text lines to display
protected String labelText; // text lines to display
protected int numLines; // the number of lines
protected int marginHeight; // top and bottom margins
protected int marginWidth; // left and right margins
protected int lineHeight; // total height of the font
protected int lineAscent; // font height above the baseline
protected int lineDescent; // font hight below the baseline
protected int[] lineWidth; // width of each line
protected int maxWidth; // width of the widest line
private int maxAllowed = LEAST_ALLOWED; // max width allowed to use
private boolean maxAllowedSet = false; // signals if the max allowed width
// has been explicitly set
protected int alignment = LEFT; // default text alignment
/*-------------------------------------------------------------------*/
/**
* Constructor
*
* @param text the text to be displayed
* @param horMargin the horizontal margin for the label
* @param vertMargin the vertical margin for the label
* @param maxWidth the maximum allowed width of the text
* @param justify the text alignment for the label
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
public MultiLineLabel(String text, int horMargin, int vertMargin, int maxWidth, int justify)
{
this.labelText = text;
this.marginWidth = horMargin;
this.marginHeight = vertMargin;
this.maxAllowed = maxWidth;
this.maxAllowedSet = true;
this.alignment = justify;
}
/*-------------------------------------------------------------------*/
/**
* Constructor using default max-width and alignment.
*
* @param label the text to be displayed
* @param marginWidth the horizontal margin for the label
* @param marginHeight the vertical margin for the label
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
public MultiLineLabel(String label, int marginWidth, int marginHeight)
{
this.labelText = label;
this.marginWidth = marginWidth;
this.marginHeight = marginHeight;
}
/*-------------------------------------------------------------------*/
/**
* Constructor using default max-width, and margin.
*
* @param label the text to be displayed
* @param alignment the text alignment for the label
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
public MultiLineLabel(String label, int alignment)
{
this.labelText = label;
this.alignment = alignment;
}
/*-------------------------------------------------------------------*/
/**
* Constructor using default max-width, alignment, and margin.
*
* @param label the text to be displayed
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
public MultiLineLabel(String label)
{
this.labelText = label;
}
/*-------------------------------------------------------------------*/
/**
* This method searches the target string for occurences of any of the characters in the source
* string. The return value is the position of the first hit. Based on the mode parameter the
* hit position is either the position where any of the source characters first was found or the
* first position where none of the source characters where found.
*
* @param target the text to be searched
* @param start the start position for the search
* @param source the list of characters to be searched for
* @param mode the search mode FOUND = reports first found NOT_FOUND = reports first not found
* @return position of the first occurence
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
int getPosition(String target, int start, char[] source, int mode)
{
int status;
int position;
int scan;
int targetEnd;
int sourceLength;
char temp;
targetEnd = (target.length() - 1);
sourceLength = source.length;
position = start;
if (mode == FOUND)
{
status = NOT_DONE;
while (status != DONE)
{
position++;
if (!(position < targetEnd)) // end of string reached, the
// next
{ // statement would cause a runtime error
return (targetEnd);
}
temp = target.charAt(position);
for (scan = 0; scan < sourceLength; scan++) // walk through the
// source
{ // string and compare each char
if (source[scan] == temp)
{
status = DONE;
}
}
}
return (position);
}
else if (mode == NOT_FOUND)
{
status = NOT_DONE;
while (status != DONE)
{
position++;
if (!(position < targetEnd)) // end of string reached, the
// next
{ // statement would cause a runtime error
return (targetEnd);
}
temp = target.charAt(position);
status = DONE;
for (scan = 0; scan < sourceLength; scan++) // walk through the
// source
{ // string and compare each char
if (source[scan] == temp)
{
status = NOT_DONE;
}
}
}
return (position);
}
return (0);
}
/*-------------------------------------------------------------------*/
/**
* This method scans the input string until the max allowed width is reached. The return value
* indicates the position just before this happens.
*
* @param word word to break
* @return position character position just before the string is too long
*/
/*-------------------------------------------------------------------*
* <detailed description / implementation details if applicable>
*-------------------------------------------------------------------*/
int breakWord(String word, FontMetrics fm)
{
int width;
int currentPos;
int endPos;
width = 0;
currentPos = 0;
endPos = word.length() - 1;
// make sure we don"t end up with a negative position
if (endPos <= 0)
{
return (currentPos);
}
// seek the position where the word first is longer than allowed
while ((width < maxAllowed) && (currentPos < endPos))
{
currentPos++;
width = fm.stringWidth(labelText.substring(0, currentPos));
}
// adjust to get the chatacter just before (this should make it a bit
// shorter than allowed!)
if (currentPos != endPos)
{
currentPos--;
}
return (currentPos);
}
/*-------------------------------------------------------------------*/
/**
* This method breaks the label text up into multiple lines of text. Line breaks are established
* based on the maximum available space. A new line is started whenever a line break is
* encountered, even if the permissible length is not yet reached. Words are broken only if a
* single word happens to be longer than one line.
*/
/*-------------------------------------------------------------------*/
private void divideLabel()
{
int width;
int startPos;
int currentPos;
int lastPos;
int endPos;
line.clear();
FontMetrics fm = this.getFontMetrics(this.getFont());
startPos = 0;
currentPos = startPos;
lastPos = currentPos;
endPos = (labelText.length() - 1);
while (currentPos < endPos)
{
width = 0;
// ----------------------------------------------------------------
// find the first substring that occupies more than the granted
// space.
// Break at the end of the string or a line break
// ----------------------------------------------------------------
while ((width < maxAllowed) && (currentPos < endPos)
&& (labelText.charAt(currentPos) != NEW_LINE))
{
lastPos = currentPos;
currentPos = getPosition(labelText, currentPos, WHITE_SPACE, FOUND);
width = fm.stringWidth(labelText.substring(startPos, currentPos));
}
// ----------------------------------------------------------------
// if we have a line break we want to copy everything up to
// currentPos
// ----------------------------------------------------------------
if (labelText.charAt(currentPos) == NEW_LINE)
{
lastPos = currentPos;
}
// ----------------------------------------------------------------
// if we are at the end of the string we want to copy everything up
// to
// the last character. Since there seems to be a problem to get the
// last
// character if the substring definition ends at the very last
// character
// we have to call a different substring function than normal.
// ----------------------------------------------------------------
if (currentPos == endPos && width <= maxAllowed)
{
lastPos = currentPos;
String s = labelText.substring(startPos);
line.addElement(s);
}
// ----------------------------------------------------------------
// in all other cases copy the substring that we have found to fit
// and
// add it as a new line of text to the line vector.
// ----------------------------------------------------------------
else
{
// ------------------------------------------------------------
// make sure it"s not a single word. If so we must break it at
// the
// proper location.
// ------------------------------------------------------------
if (lastPos == startPos)
{
lastPos = startPos + breakWord(labelText.substring(startPos, currentPos), fm);
}
String s = labelText.substring(startPos, lastPos);
line.addElement(s);
}
// ----------------------------------------------------------------
// seek for the end of the white space to cut out any unnecessary
// spaces
// and tabs and set the new start condition.
// ----------------------------------------------------------------
startPos = getPosition(labelText, lastPos, SPACES, NOT_FOUND);
currentPos = startPos;
}
numLines = line.size();
lineWidth = new int[numLines];
}
/*-------------------------------------------------------------------*/
/**
* This method finds the font size, each line width and the widest line.
*/
/*-------------------------------------------------------------------*/
protected void measure()
{
if (!maxAllowedSet)
{
maxAllowed = getParent().getSize().width;
}
// return if width is too small
if (maxAllowed < (20))
{
return;
}
FontMetrics fm = this.getFontMetrics(this.getFont());
// return if no font metrics available
if (fm == null)
{
return;
}
divideLabel();
this.lineHeight = fm.getHeight();
this.lineDescent = fm.getDescent();
this.maxWidth = 0;
for (int i = 0; i < numLines; i++)
{
this.lineWidth[i] = fm.stringWidth(this.line.elementAt(i));
if (this.lineWidth[i] > this.maxWidth)
{
this.maxWidth = this.lineWidth[i];
}
}
}
/*-------------------------------------------------------------------*/
/**
* This method draws the label.
*
* @param graphics the device context
*/
/*-------------------------------------------------------------------*/
public void paint(Graphics graphics)
{
int x;
int y;
measure();
Dimension d = this.getSize();
y = lineAscent + (d.height - (numLines * lineHeight)) / 2;
for (int i = 0; i < numLines; i++)
{
y += lineHeight;
switch (alignment)
{
case LEFT:
x = marginWidth;
break;
case CENTER:
x = (d.width - lineWidth[i]) / 2;
break;
case RIGHT:
x = d.width - marginWidth - lineWidth[i];
break;
default:
x = (d.width - lineWidth[i]) / 2;
}
graphics.drawString(line.elementAt(i), x, y);
}
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the label text
*
* @param labelText the text to be displayed
*/
/*-------------------------------------------------------------------*/
public void setText(String labelText)
{
this.labelText = labelText;
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the font that should be used to draw the label
*
* @param font font to be used within the label
*/
/*-------------------------------------------------------------------*/
public void setFont(Font font)
{
super.setFont(font);
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the color in which the text should be drawn
*
* @param color the text color
*/
/*-------------------------------------------------------------------*/
public void setColor(Color color)
{
super.setForeground(color);
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the text alignment for the label
*
* @param alignment the alignment, possible values are LEFT, CENTER, RIGHT
*/
/*-------------------------------------------------------------------*/
public void setJustify(int alignment)
{
this.alignment = alignment;
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the max allowed line width
*
* @param width the max allowed line width in pixels
*/
/*-------------------------------------------------------------------*/
public void setMaxWidth(int width)
{
this.maxAllowed = width;
this.maxAllowedSet = true;
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the horizontal margin
*
* @param margin the margin to the left and to the right of the label
*/
/*-------------------------------------------------------------------*/
public void setMarginWidth(int margin)
{
this.marginWidth = margin;
repaint();
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to set the vertical margin for the label
*
* @param margin the margin on the top and bottom of the label
*/
/*-------------------------------------------------------------------*/
public void setMarginHeight(int margin)
{
this.marginHeight = margin;
repaint();
}
/*-------------------------------------------------------------------*/
/**
* Moves and resizes this component. The new location of the top-left corner is specified by
* <code>x</code> and <code>y</code>, and the new size is specified by <code>width</code>
* and <code>height</code>.
*
* @param x The new x-coordinate of this component.
* @param y The new y-coordinate of this component.
* @param width The new width of this component.
* @param height The new height of this component.
*/
/*-------------------------------------------------------------------*/
public void setBounds(int x, int y, int width, int height)
{
super.setBounds(x, y, width, height);
this.maxAllowed = width;
this.maxAllowedSet = true;
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to retrieve the text alignment for the label
*
* @return alignment the text alignment currently in use for the label
*/
/*-------------------------------------------------------------------*/
public int getAlignment()
{
return (this.alignment);
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to retrieve the horizontal margin for the label
*
* @return marginWidth the margin currently in use to the left and right of the label
*/
/*-------------------------------------------------------------------*/
public int getMarginWidth()
{
return (this.marginWidth);
}
/*-------------------------------------------------------------------*/
/**
* This method may be used to retrieve the vertical margin for the label
*
* @return marginHeight the margin currently in use on the top and bottom of the label
*/
/*-------------------------------------------------------------------*/
public int getMarginHeight()
{
return (this.marginHeight);
}
/*-------------------------------------------------------------------*/
/**
* This method is typically used by the layout manager, it reports the necessary space to
* display the label comfortably.
*/
/*-------------------------------------------------------------------*/
public Dimension getPreferredSize()
{
measure();
return (new Dimension(maxAllowed, (numLines * (lineHeight + lineAscent + lineDescent))
+ (2 * marginHeight)));
}
/*-------------------------------------------------------------------*/
/**
* This method is typically used by the layout manager, it reports the absolute minimum space
* required to display the entire label.
*/
/*-------------------------------------------------------------------*/
public Dimension getMinimumSize()
{
measure();
return (new Dimension(maxAllowed, (numLines * (lineHeight + lineAscent + lineDescent))
+ (2 * marginHeight)));
}
/*-------------------------------------------------------------------*/
/**
* This method is called by the system after this object is first created.
*/
/*-------------------------------------------------------------------*/
public void addNotify()
{
super.addNotify(); // invoke the superclass
}
}
/*---------------------------------------------------------------------------*/
Multi Line Label extends JPanel
/*
This file is part of the BlueJ program.
Copyright (C) 1999-2009 Michael K�lling and John Rosenberg
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
This file is subject to the Classpath exception as provided in the
LICENSE.txt file that accompanied this code.
*/
import java.awt.Color;
import java.awt.ruponent;
import java.awt.Font;
import java.util.ArrayList;
import java.util.List;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;
/**
** @version $Id: MultiLineLabel.java 6164 2009-02-19 18:11:32Z polle $
** @author Justin Tan
** A multi-line Label-like AWT component.
**/
public class MultiLineLabel extends JPanel
{
protected int fontAttributes = Font.PLAIN;
protected float alignment;
protected Color col = null;
protected int spacing = 0;
/**
** Constructor - make a multiline label
**/
public MultiLineLabel(String text, float alignment)
{
this.alignment = alignment;
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
if(text != null)
setText(text);
}
/**
** Constructor, defaults to centered text
**/
public MultiLineLabel(String text)
{
this(text, LEFT_ALIGNMENT);
}
/**
* Constructor, empty with the given alignment
*/
public MultiLineLabel(float alignment)
{
this(null, alignment);
}
/**
* Constructor, empty with the given alignment and line spacing
*/
public MultiLineLabel(float alignment, int spacing)
{
this(null, alignment);
this.spacing = spacing;
}
/**
** Constructor - make an empty multiline label
**/
public MultiLineLabel()
{
this(null, LEFT_ALIGNMENT);
}
public void setText(String text)
{
// clear the existing lines from the panel
removeAll();
addText(text);
}
public void addText(String text)
{
addText(text, 12);
}
public void addText(String text, int size)
{
if(spacing > 0)
add(Box.createVerticalStrut(spacing));
String strs[] = splitLines(text);
JLabel l;
Font font = new Font("SansSerif", fontAttributes, size);
for (int i = 0; strs != null && i < strs.length; i++) {
l = new JLabel(strs[i]);
l.setFont(font);
l.setAlignmentX(alignment);
if (col != null)
l.setForeground(col);
add(l);
}
}
/**
* Splits "string" by "Delimiter"
*
* @param str - the string to be split
* @param delimiter - the field delimiter within str
* @returns an array of Strings
*/
public static String[] split(String str, String delimiter)
{
List<String> strings = new ArrayList<String>();
int start = 0;
int len = str.length();
int dlen = delimiter.length();
int offset = str.lastIndexOf(delimiter); // First of all, find the
// Last occurance of the Delimiter
// Stop empty delimiters
if (dlen < 1)
return null;
else if (offset < 0) // one element
{
String[] result = {str};
return result;
}
//
// Append the delimiter onto the end if it doesn"t already exit
//
if (len > offset + dlen) {
str += delimiter;
len += dlen;
}
do {
// Get the new Offset
offset = str.indexOf(delimiter, start);
strings.add(str.substring(start, offset));
// Get the new Start position
start = offset + dlen;
} while ((start < len) && (offset != -1));
// Convert the list into an Array of Strings
String result[] = new String[strings.size()];
strings.toArray(result);
return result;
}
/**
* Splits "string" into lines (stripping end-of-line characters)
*
* @param str - the string to be split
* @returns an array of Strings
*/
public static String[] splitLines(String str)
{
return (str == null ? null : split(str, "\n"));
}
public void addText(String text, boolean bold, boolean italic)
{
int oldAttributes = fontAttributes;
setBold(bold);
setItalic(italic);
addText(text);
fontAttributes = oldAttributes;
}
public void setForeground(Color col)
{
this.col = col;
Component[] components = this.getComponents();
for (int i = 0; i < components.length; i++) {
Component component = components[i];
component.setForeground(col);
}
}
public void setItalic(boolean italic)
{
if(italic)
fontAttributes |= Font.ITALIC;
else
fontAttributes &= ~Font.ITALIC;
}
public void setBold(boolean bold)
{
if(bold)
fontAttributes |= Font.BOLD;
else
fontAttributes &= ~Font.BOLD;
}
}
URL Label
//The contents of this file are subject to the Mozilla Public License Version 1.1
//(the "License"); you may not use this file except in compliance with the
//License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
//
//Software distributed under the License is distributed on an "AS IS" basis,
//WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
//for the specific language governing rights and
//limitations under the License.
//
//The Original Code is "The Columba Project"
//
//The Initial Developers of the Original Code are Frederik Dietz and Timo Stich.
//Portions created by Frederik Dietz and Timo Stich are Copyright (C) 2003.
//
//All Rights Reserved.
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.net.URL;
import javax.swing.JLabel;
public class URLLabel extends JLabel {
boolean entered = false;
boolean mousehover;
public URLLabel(URL url) {
this(url, url.toString());
}
public URLLabel(URL url, String str) {
super(str);
setForeground(Color.blue);
mousehover = false;
}
public void mouseEntered(MouseEvent e) {
setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
entered = true;
if (mousehover) {
repaint();
}
}
public void mouseExited(MouseEvent e) {
setCursor(Cursor.getDefaultCursor());
entered = false;
if (mousehover) {
repaint();
}
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void paint(Graphics g) {
super.paint(g);
if (entered || !mousehover) {
Rectangle r = g.getClipBounds();
g.drawLine(0, r.height - this.getFontMetrics(this.getFont()).getDescent(), this
.getFontMetrics(this.getFont()).stringWidth(this.getText()), r.height
- this.getFontMetrics(this.getFont()).getDescent());
}
}
}
Vertical Label UI
/*
* The contents of this file are subject to the Sapient Public License
* Version 1.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* http://carbon.sf.net/License.html.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* The Original Code is The Carbon Component Framework.
*
* The Initial Developer of the Original Code is Sapient Corporation
*
* Copyright (C) 2003 Sapient Corporation. All Rights Reserved.
*/
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.geom.AffineTransform;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.plaf.basic.BasicLabelUI;
/**
* <p>This is the template for Classes.</p>
*
*
* @since carbon 1.0
* @author Greg Hinkle, January 2002
* @version $Revision: 1.4 $($Author: dvoet $ / $Date: 2003/05/05 21:21:27 $)
* @copyright 2002 Sapient
*/
public class VerticalLabelUI extends BasicLabelUI {
static {
labelUI = new VerticalLabelUI(false);
}
protected boolean clockwise;
public VerticalLabelUI(boolean clockwise) {
super();
this.clockwise = clockwise;
}
public Dimension getPreferredSize(JComponent c) {
Dimension dim = super.getPreferredSize(c);
return new Dimension( dim.height, dim.width );
}
private static Rectangle paintIconR = new Rectangle();
private static Rectangle paintTextR = new Rectangle();
private static Rectangle paintViewR = new Rectangle();
private static Insets paintViewInsets = new Insets(0, 0, 0, 0);
public void paint(Graphics g, JComponent c) {
JLabel label = (JLabel)c;
String text = label.getText();
Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();
if ((icon == null) && (text == null)) {
return;
}
FontMetrics fm = g.getFontMetrics();
paintViewInsets = c.getInsets(paintViewInsets);
paintViewR.x = paintViewInsets.left;
paintViewR.y = paintViewInsets.top;
// Use inverted height & width
paintViewR.height = c.getWidth() - (paintViewInsets.left + paintViewInsets.right);
paintViewR.width = c.getHeight() - (paintViewInsets.top + paintViewInsets.bottom);
paintIconR.x = paintIconR.y = paintIconR.width = paintIconR.height = 0;
paintTextR.x = paintTextR.y = paintTextR.width = paintTextR.height = 0;
String clippedText =
layoutCL(label, fm, text, icon, paintViewR, paintIconR, paintTextR);
Graphics2D g2 = (Graphics2D) g;
AffineTransform tr = g2.getTransform();
if (clockwise) {
g2.rotate( Math.PI / 2 );
g2.translate( 0, - c.getWidth() );
} else {
g2.rotate( - Math.PI / 2 );
g2.translate( - c.getHeight(), 0 );
}
if (icon != null) {
icon.paintIcon(c, g, paintIconR.x, paintIconR.y);
}
if (text != null) {
int textX = paintTextR.x;
int textY = paintTextR.y + fm.getAscent();
if (label.isEnabled()) {
paintEnabledText(label, g, clippedText, textX, textY);
} else {
paintDisabledText(label, g, clippedText, textX, textY);
}
}
g2.setTransform( tr );
}
}
