TAG:
|
实现功能: 类似于Windows XP中的快速按钮的风格, 允许指定按钮的状态是自弹起(就是鼠标键按下时按钮产生被按下的效果, 鼠标键抬起的时候按钮自动回复原状)着是开关按钮(点击一次, 按钮被按下, 再点击一次, 按钮被弹起), 并能够设定一组(多个)或多组互斥按钮(即同组中有且只有一个按钮一直处于被按下的状态). 当然, 这个类不是很完善, 有许多地方可以改进, 比如没有加入当按钮处于禁止使用的状态(Disabled), 应该再引入一个Image来显示成灰色的效果等. 您就自己改改吧. :) 程序代码: SpeedButton.java -------------------------------- import javax.swing.*; import java.awt.*; import java.awt.event.*; public class SpeedButton extends JButton implements MouseListener { private boolean entered = false; /* 标志, 用于判断鼠标是否在按钮上 */ private boolean downed = false; /* 标志, 用于按钮是否被按下 */ private boolean enabledDowned = false; /* 标志, 用于按钮是否允许被按下 */ private Image image = null; private int groupID = 0; /* 指定按钮属于哪个互斥组, 取值为0时不判断 */ private int buttonID; /* 按钮本身的ID号, 唯一 */ /** * 这个构造器有点烦, 这里可以进行优化成多个构造器来组合. * @see com.javax.swing.JButton * @author delfan,2002.07.23 * @version 1.0 */ public SpeedButton(int buttonID, Image image, int width, int height, String tip, boolean enabledDowned,boolean initmode, int groupID, ActionListener actionListener) { this.buttonID = buttonID; this.image = image; addMouseListener(this); setPreferredSize(new Dimension(width, height)); setToolTipText(tip); this.enabledDowned = enabledDowned; this.groupID = groupID; downed = initmode; addActionListener(actionListener); } public void paint(Graphics g) { if (getSize().height == 2 || getSize().width == 2) { // 画分隔条, 当按钮宽度或高度为2的时候, g.setColor(new Color(119, 133, 168)); // 认为是分隔条 g.fillRect(0, 0, getWidth() - 1, getHeight() - 1); g.setColor(new Color(129, 143, 178)); g.fillRect(1, 1, getWidth(), getHeight()); setEnabled(false); } else { if (entered) { // 鼠标在按钮内 g.setColor(new Color(119, 133, 168)); g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(new Color(8, 36, 107)); g.drawRect(0, 0, getWidth() - 1, getHeight() - 1); if (image != null) g.drawImage(image, 2, 2, getParent()); } else { // 鼠标不在按钮内 g.setColor(getParent().getBackground()); g.fillRect(0, 0, getWidth(), getHeight()); if (image != null) g.drawImage(image, 2, 2, getParent()); } if (downed) { // 按钮被按下 g.setColor(new Color(181, 190, 214)); g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(new Color(8, 36, 107)); g.drawRect(0, 0, getWidth() - 1, getHeight() - 1); if (image != null) g.drawImage(image, 3, 3, getParent()); } } } public void update(Graphics g) {paint(g);} /** * 按钮是否处于按下状态 */ public boolean isDowned() {return downed;} /** * 取得按钮的组索引号 */ public int getGroupID() {return groupID;} public void setDowned(boolean downed) {this.downed = downed;repaint();} public void mouseEntered(MouseEvent e) {entered = true;repaint();} public void mouseExited(MouseEvent e) {entered = false;repaint();} public void mouseClicked(MouseEvent e) {} public void mousePressed(MouseEvent e) { if (enabledDowned && downed && groupID == 0) downed = false; else downed = true; repaint(); } public void mouseReleased(MouseEvent e) { if (!enabledDowned) downed = false; repaint(); if (groupID != 0) // 通过存放按钮的容器进行互斥按钮的状态改变操作 for (int i = 0; i < getParent().getComponentCount(); i++) if (getParent().getComponent(i) instanceof SpeedButton) { if (((SpeedButton) getParent().getComponent(i)).getGroupID() == groupID && ((SpeedButton) getParent().getComponent(i)) != this) ((SpeedButton) getParent().getComponent(i)).setDowned(false); } } public int getButtonID() {return buttonID;} } (iwgh) |