效果：
一、
二、
代码：
一、
package azure.ui.swing.components.tooltip;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
/**
* @author Azure
* @version 1.0 14/03/07
*/
public class AzEllipseToolTipExample extends JFrame {
public AzEllipseToolTipExample() {
init();
}
public void init() {
HalfOpaqueToolTip tooltip = new HalfOpaqueToolTip("让我再吻一吻你的脸！",
new Color(250, 250, 200), Color.RED, new Color(95, 145, 145),
this);
JButton button = new JButton("swing");
button.addMouseListener(tooltip);
this.setLayout(new FlowLayout());
this.add(new JButton("金"));
this.add(new JButton("木"));
this.add(new JButton("水"));
this.add(new JButton("火"));
this.add(new JButton("土"));
this.add(new JButton("风"));
this.add(new JButton("雨"));
this.add(new JButton("雷"));
this.add(new JButton("电"));
this.add(new JButton("天"));
this.add(new JButton("地"));
this.add(new JButton("乾"));
this.add(new JButton("坤"));
this.add(button);
this.add(new JButton("春"));
this.add(new JButton("夏"));
this.setSize(380, 200);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setVisible(true);
}
public static void main(String args[]) {
new AzEllipseToolTipExample();
}
class HalfOpaqueToolTip extends JPanel implements MouseListener {
private Color backGroundCol = null;
private Color foregroundColorCol = null;
private Color borderCol = null;
private String content = null;
private JFrame frame = null;
private int contentEllipseX = 30;
private int contentEllipseY = 20;
private int contentEllipseW = 0;
private int contentEllipseH = 0;
private int LEFT = 1;
private int RIGHT = 2;
private int direction = 2;
public HalfOpaqueToolTip(String tooltipContent, Color backGroundColor,
Color foregroundColor, Color borderColor, JFrame frame) {
content = tooltipContent;
backGroundCol = backGroundColor;
foregroundColorCol = foregroundColor;
borderCol = borderColor;
/*
* 调整tooltip的大小
*/
content = tooltipContent;
contentEllipseW = tooltipContent.getBytes().length * 6 + 10;
contentEllipseH = 40;
this.setSize(contentEllipseX + contentEllipseW + 1, 90);
this.setOpaque(false);
this.setVisible(false);
// 将本控件置于界面的最顶层
frame.getLayeredPane().add(this, JLayeredPane.POPUP_LAYER);
this.frame = frame;
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setColor(backGroundCol);
AlphaComposite composite = AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, 70 / 100.0F);
g2d.setComposite(composite);
g2d.fill(getArea());
// 恢复到默认情况
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
g2d.setColor(foregroundColorCol);
if (direction == LEFT) {
g2d.drawString(content, (int) this.getSize().getWidth()
- contentEllipseX - contentEllipseW + 10,
contentEllipseY + contentEllipseH / 2 + 5);
} else {
g2d.drawString(content, contentEllipseX + 10, contentEllipseY
+ contentEllipseH / 2 + 5);
}
}
protected void paintBorder(Graphics g) {
super.paintBorder(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setColor(borderCol);
g2d.draw(getArea());
}
private Area getArea() {
if (direction == LEFT) {
return getLeftArea();
} else {
return getRightArea();
}
}
private Area getLeftArea() {
Area area = new Area(new Ellipse2D.Float((int) this.getSize()
.getWidth() - 6 - 1, (int) this.getSize().getHeight() - 20,
6, 6));
area.add(new Area(new Ellipse2D.Float((int) this.getSize()
.getWidth() - 10 - 30 + 1,
(int) this.getSize().getHeight() - 35, 30, 15)));
area.add(new Area(new Ellipse2D.Float((int) this.getSize()
.getWidth()
- contentEllipseX - contentEllipseW + 1, contentEllipseY,
contentEllipseW, contentEllipseH)));
return area;
}
private Area getRightArea() {
Area area = new Area(new Ellipse2D.Float(0, (int) this.getSize()
.getHeight() - 20, 6, 6));
area.add(new Area(new Ellipse2D.Float(10, (int) this.getSize()
.getHeight() - 35, 30, 15)));
area.add(new Area(new Ellipse2D.Float(contentEllipseX,
contentEllipseY, contentEllipseW, contentEllipseH)));
return area;
}
public void mouseEntered(MouseEvent e) {
Point p = e.getLocationOnScreen();
SwingUtilities.convertPointFromScreen(p, e.getComponent()
.getParent());
if (p.x + this.getWidth() > frame.getX()) {
direction = LEFT;
this.setLocation(new Point(p.x - this.getWidth(), p.y
- this.getHeight()));
} else {
direction = RIGHT;
this.setLocation(new Point(p.x, p.y - this.getHeight()));
}
this.setVisible(true);
}
public void mouseExited(MouseEvent e) {
this.setVisible(false);
}
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
}
}
二、
package azure.ui.swing.components.tooltip;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Polygon;
import java.awt.RenderingHints;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.geom.Area;
import java.awt.geom.RoundRectangle2D;
import java.util.StringTokenizer;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
/**
* @author Azure
* @version 1.0 14/03/07
*/
public class AzPolygonToolTipExample extends JFrame {
public AzPolygonToolTipExample() {
init();
}
public void init() {
HalfOpaqueToolTip tooltip = new HalfOpaqueToolTip(
"让我再吻一吻你的脸！", new Color(250, 250, 200),
Color.RED, new Color(95, 145, 145), this);
JButton button = new JButton("swing");
button.addMouseListener(tooltip);
this.setLayout(new FlowLayout());
this.add(new JButton("金"));
this.add(new JButton("木"));
this.add(new JButton("水"));
this.add(new JButton("火"));
this.add(new JButton("土"));
this.add(new JButton("风"));
this.add(new JButton("雨"));
this.add(new JButton("雷"));
this.add(new JButton("电"));
this.add(new JButton("天"));
this.add(new JButton("地"));
this.add(new JButton("乾"));
this.add(new JButton("坤"));
this.add(button);
this.setSize(380, 200);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setVisible(true);
}
public static void main(String args[]) {
new AzPolygonToolTipExample();
}
class HalfOpaqueToolTip extends JPanel implements MouseListener {
private Color backGroundCol = null;
private Color foregroundColorCol = null;
private Color borderCol = null;
private String content = null;
private JFrame frame = null;
private int LEFT = 1;
private int RIGHT = 2;
private int direction = 2;
public HalfOpaqueToolTip(String tooltipContent, Color backGroundColor,
Color foregroundColor, Color borderColor, JFrame frame) {
content = tooltipContent;
backGroundCol = backGroundColor;
foregroundColorCol = foregroundColor;
borderCol = borderColor;
/*
* 调整tooltip的大小
*/
int fristRowIndex = tooltipContent.indexOf("\n");
String tooltipStr = "";
if (fristRowIndex > 0) {
tooltipStr = tooltipContent.substring(0, tooltipContent
.indexOf("\n"));
} else {
tooltipStr = tooltipContent;
}
this
.setSize(tooltipStr.length() * this.getFont().getSize()
+ 20, new StringTokenizer(tooltipContent, "\n")
.countTokens() * 20 + 20);// 左右各留10的空白空间
this.setOpaque(false);
this.setVisible(false);
// 将本控件置于界面的最顶层
frame.getLayeredPane().add(this, JLayeredPane.POPUP_LAYER);
this.frame = frame;
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setColor(backGroundCol);
AlphaComposite composite = AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, 70 / 100.0F);
g2d.setComposite(composite);
g2d.fill(getArea());
g2d.setColor(foregroundColorCol);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
/*
* 画上字符内容
*/
StringTokenizer contentTokenizer = new StringTokenizer(content,
"\n");
int contentStartY = 20;
while (contentTokenizer.hasMoreElements()) {
g2d.drawString(contentTokenizer.nextToken(), 10, contentStartY);
contentStartY = contentStartY + 20;
}
}
protected void paintBorder(Graphics g) {
super.paintBorder(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setColor(borderCol);
g2d.draw(getArea());
}
private Area getArea() {
if (direction == LEFT) {
return getLeftArea();
} else {
return getRightArea();
}
}
private Area getLeftArea() {
Area area = new Area(new RoundRectangle2D.Float(0, 0, this
.getWidth() - 1, this.getHeight() - 10, 10, 10));
Polygon polygon = new Polygon();
polygon.addPoint(this.getWidth() - 25, this.getHeight() - 10);
polygon.addPoint(this.getWidth() - 10, this.getHeight() - 10);
polygon.addPoint(this.getWidth(), this.getHeight());
area.add(new Area(polygon));
return area;
}
private Area getRightArea() {
Area area = new Area(new RoundRectangle2D.Float(0, 0, this
.getWidth()-1, this.getHeight() - 10, 10, 10));
Polygon polygon = new Polygon();
polygon.addPoint(25, this.getHeight() - 10);
polygon.addPoint(10, this.getHeight() - 10);
polygon.addPoint(0, this.getHeight());
area.add(new Area(polygon));
return area;
}
public void mouseEntered(MouseEvent e) {
Point p = e.getComponent().getLocationOnScreen();
SwingUtilities.convertPointFromScreen(p, e.getComponent()
.getParent());
if (p.x + this.getWidth() > frame.getX()) {
direction = LEFT;
this.setLocation(new Point(p.x - this.getWidth() + 10, p.y
- this.getHeight() + 10));
} else {
direction = RIGHT;
this.setLocation(new Point(p.x + e.getComponent().getWidth(),
p.y - this.getHeight() + 10));
}
this.setVisible(true);
}
public void mouseExited(MouseEvent e) {
this.setVisible(false);
}
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
}
}