Swing之QQ软键盘

完全实现QQ登录界面的软件盘功能！

直接上代码，以下代码非常完整，copy后能直接运行：

package swing.component.popup;import java.awt.AlphaComposite;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Composite;import java.awt.Container;import java.awt.Cursor;import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.Font;import java.awt.GradientPaint;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.GridLayout;import java.awt.Image;import java.awt.Paint;import java.awt.Polygon;import java.awt.RenderingHints;import java.awt.RenderingHints.Key;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.image.BufferedImage;import java.util.ArrayList;import java.util.Arrays;import java.util.Random;import javax.swing.BorderFactory;import javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JPasswordField;import javax.swing.JPopupMenu;import javax.swing.JToolTip;import javax.swing.border.Border;import javax.swing.border.CompoundBorder;import javax.swing.border.EmptyBorder;import sun.swing.SwingUtilities2;//软键盘弹出菜单public class SoftKeyBoardPopup extends JPopupMenu {private static final long serialVersionUID = 1L;public static void main(String[] args) {final JFrame frame = new JFrame();frame.setLayout(new FlowLayout(FlowLayout.CENTER, 20, 20));frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(500, 500);frame.setLocationRelativeTo(null);final JPanel passwordPanel = new JPanel(new BorderLayout());passwordPanel.setBackground(Color.WHITE);passwordPanel.setPreferredSize(new Dimension(202, 30));passwordPanel.setLayout(new BorderLayout());passwordPanel.setBorder(BorderFactory.createEmptyBorder(3, 3, 3, 3));frame.add(passwordPanel);final JPasswordField password = new JPasswordField();password.setSelectedTextColor(Color.BLACK);// 颜色障眼法，产生不能去选中密码框的任何东西的幻觉，其实已经选中了但你不知道password.setSelectionColor(Color.WHITE);// 颜色障眼法，产生不能去选中密码框的任何东西的幻觉，其实已经选中了但你不知道password.setForeground(Color.BLACK);password.setFont(password.getFont().deriveFont(22f));// password.setEchoChar('●');password.setBorder(new EmptyBorder(5, 3, 0, 3));// 左间隙passwordPanel.add(password, BorderLayout.CENTER);final SoftKeyBoardPopup keyPopup = new SoftKeyBoardPopup(password);final JLabel keyBoard = new JLabel("软件盘");keyBoard.setOpaque(true);keyBoard.setBackground(Color.WHITE);keyBoard.setBorder(new EmptyBorder(0, 0, 0, 0));keyBoard.setToolTipText("打开软键盘");keyBoard.setPreferredSize(new Dimension(42, 23));keyBoard.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));keyBoard.addMouseListener(new MouseAdapter() {public void mouseClicked(MouseEvent e) {if (!keyPopup.isVisible()) {keyPopup.show(passwordPanel, 0, passwordPanel.getPreferredSize().height);keyPopup.getSoftKeyBoardPanel().reset();keyPopup.repaint();}}});passwordPanel.add(keyBoard, BorderLayout.EAST);frame.setVisible(true);}private static Color transparentColor = new Color(255, 255, 255, 0);// private static Dimension popupSize = new Dimension(360, 110);//QQ软键盘大小private static Dimension popupSize = new Dimension(365, 110);private static Color backColor = new Color(23, 127, 194);private static Random random = new Random();protected SoftKeyBoardPanel softKeyBoardPanel;public SoftKeyBoardPopup(JPasswordField passwordField) {softKeyBoardPanel = new SoftKeyBoardPanel(passwordField, this);softKeyBoardPanel.setPreferredSize(popupSize);softKeyBoardPanel.setBorder(BorderFactory.createEmptyBorder());add(softKeyBoardPanel);setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));// 空边框setOpaque(false);// 透明}public static void gc() {popupSize = null;backColor = null;random = null;System.gc();}public static void resetValue() {popupSize = new Dimension(380, 110);backColor = new Color(23, 127, 194);random = new Random();}public SoftKeyBoardPanel getSoftKeyBoardPanel() {return softKeyBoardPanel;}// 软键盘面板public static class SoftKeyBoardPanel extends JPanel implements ActionListener {JPasswordField passwordField;JPopupMenu popupMenu;RowPanel[] rows;KeyStatus status = KeyStatus.normal;Paint[] paints = new Paint[] { new Color(70, 67, 114), new Color(62, 192, 238), new Color(138, 180, 231) };public SoftKeyBoardPanel(JPasswordField passwordField, JPopupMenu popupMenu) {this.passwordField = passwordField;this.popupMenu = popupMenu;initSoftKeyBoardPanel();}// 初始化private void initSoftKeyBoardPanel() {setLayout(null);setBackground(backColor);JPanel proxyPanel = new JPanel(new GridLayout(4, 1, 0, 1));// 4行一列，0水平间隙，1垂直间隙proxyPanel.setBackground(backColor);proxyPanel.setLocation(3, 4);proxyPanel.setSize(popupSize.width - 6, popupSize.height - 7);add(proxyPanel);rows = new RowPanel[] { new RowPanel(RowType.first), new RowPanel(RowType.second), new RowPanel(RowType.third), new RowPanel(RowType.fourth) };for (int i = 0; i < rows.length; i++) {proxyPanel.add(rows[i]);}}// 重写paint绘制想要的效果@Overridepublic void paint(Graphics g) {super.paint(g);Graphics2D g2d = (Graphics2D) g;ImageTool.setAntiAliasing(g2d);// 抗锯齿ImageTool.drawRoundRect(g2d, getWidth(), getHeight(), 0, null, paints);// 绘制软键盘成圆角和多层颜色边框}// 处理所有软键盘点击事件@Overridepublic void actionPerformed(ActionEvent e) {KeyLable keyLable = (KeyLable) e.getSource();if (keyLable.isShift() || keyLable.isCapsLock()) {boolean pressed = keyLable.isPressed();if (keyLable.isShift()) {clickShift();} else if (keyLable.isCapsLock()) {clickCapsLock();}pressed = !pressed;keyLable.setPressed(pressed);notifyKeyLabel();} else if (keyLable.isBackSpace()) {clickBackSpace();} else if (keyLable.isCommKey()) {String key;if (status == KeyStatus.shift || status == KeyStatus.shiftAndCapsLock) {key = keyLable.getCenterKey();} else if (status == KeyStatus.normal || status == KeyStatus.capsLock) {key = keyLable.getLowerLeftKey() == null ? keyLable.getCenterKey() : keyLable.getLowerLeftKey();} else {key = "";}clickCommKey(key);}}// 通知KeyLabel更新状态public void notifyKeyLabel() {for (RowPanel rowPanel : rows) {for (KeyLable keyLable : rowPanel.getKeys()) {keyLable.setStatus(status);}}}// 重置键盘， 清除按压状态，并将键盘恢复至初始状态public void reset() {for (RowPanel rowPanel : rows) {for (KeyLable keyLable : rowPanel.getKeys()) {keyLable.reset();}}status = KeyStatus.normal;}// 更改状态public void clickShift() {if (status == KeyStatus.capsLock) {status = KeyStatus.shiftAndCapsLock;} else if (status == KeyStatus.shiftAndCapsLock) {status = KeyStatus.capsLock;} else if (status == KeyStatus.shift) {status = KeyStatus.normal;} else if (status == KeyStatus.normal) {status = KeyStatus.shift;} else {status = KeyStatus.normal;}}// 更改状态public void clickCapsLock() {if (status == KeyStatus.capsLock) {status = KeyStatus.normal;} else if (status == KeyStatus.shiftAndCapsLock) {status = KeyStatus.shift;} else if (status == KeyStatus.shift) {status = KeyStatus.shiftAndCapsLock;} else if (status == KeyStatus.normal) {status = KeyStatus.capsLock;} else {status = KeyStatus.normal;}}// 点击了删除键， 删除一个字符public void clickBackSpace() {char[] password = passwordField.getPassword();if (password != null && password.length > 0) {char[] copyOf = Arrays.copyOf(password, password.length - 1);passwordField.setText(new String(copyOf));System.out.println("已删除的字符：" + password[password.length - 1]);System.out.println("删除后的的密码：" + new String(copyOf));}}// 点击了普通的键，添加一个字符public void clickCommKey(String key) {if (key != null) {if (key.length() > 1) {// 可有可无的检查key = key.substring(0, key.length() - 1);}char[] password = passwordField.getPassword();String string = (password == null ? "" : new String(password));passwordField.setText(string + key);System.out.println("新添加的字符：" + key);System.out.println("添加后的密码：" + string + key);}}public RowPanel[] getRows() {return rows;}// 创建关闭图标public Image createCloseImage(Color fontColor, boolean isFocus) {int width = 12;BufferedImage bi = new BufferedImage(width, width, BufferedImage.TYPE_4BYTE_ABGR);Graphics2D g2d = bi.createGraphics();ImageTool.setAntiAliasing(g2d);// 画背景g2d.setPaint(transparentColor);g2d.fillRect(0, 0, width, width);int[] xpoints_1 = { 2, 4, 8, 10 };int[] ypoints_1 = { 2, 2, 10, 10 };int npoints_1 = 4;Polygon p_left = new Polygon(xpoints_1, ypoints_1, npoints_1);// 左上角到右下角图标int[] xpoints_2 = xpoints_1;int[] ypoints_2 = { 10, 10, 2, 2 };int npoints_2 = 4;Polygon p_right = new Polygon(xpoints_2, ypoints_2, npoints_2);// 右上角到左下角图标if (isFocus) {g2d.setPaint(new GradientPaint(0, 0, fontColor, 0, width, new Color(fontColor.getRed(), fontColor.getGreen(), fontColor.getBlue(), 50)));} else {g2d.setPaint(fontColor);}// 画关闭图标("x")g2d.fillPolygon(p_left);g2d.fillPolygon(p_right);return bi;}public class RowPanel extends JPanel {RowType rowType;KeyLable[] keys;public RowPanel(RowType rowType) {this.rowType = rowType;initRowPanel();}private void initRowPanel() {setOpaque(true);setLayout(new FlowLayout(FlowLayout.CENTER, 1, 0));// 水平间隙1，垂直间隙0setBackground(backColor);if (rowType == RowType.first) {KeyLable key1 = new KeyLable("!", "1", SoftKeyBoardPanel.this);KeyLable key2 = new KeyLable("@", "2", SoftKeyBoardPanel.this);KeyLable key3 = new KeyLable("#", "3", SoftKeyBoardPanel.this);KeyLable key4 = new KeyLable("$", "4", SoftKeyBoardPanel.this);KeyLable key5 = new KeyLable("%", "5", SoftKeyBoardPanel.this);KeyLable key6 = new KeyLable("^", "6", SoftKeyBoardPanel.this);KeyLable key7 = new KeyLable("&", "7", SoftKeyBoardPanel.this);KeyLable key8 = new KeyLable("*", "8", SoftKeyBoardPanel.this);KeyLable key9 = new KeyLable("(", "9", SoftKeyBoardPanel.this);KeyLable key10 = new KeyLable(")", "0", SoftKeyBoardPanel.this);KeyLable key11 = new KeyLable("~", "`", SoftKeyBoardPanel.this);// 这个键的位置随机KeyLable key12 = new KeyLable("BackSpace", true, SoftKeyBoardPanel.this);// 功能键，位置固定在最右key12.setPreferredSize(new Dimension(70, 25));keys = new KeyLable[] { key4, key5, key6, key7, key8, key9, key10, key11, key1, key2, key3, key12 };ArrayList<KeyLable> keylist = new ArrayList<KeyLable>(keys.length);for (KeyLable key : keys) {if (key != key11) {// key11排除在外keylist.add(key);}}int randomIndex = random.nextInt(keys.length - 1);// 排除最后一个留给key12的位置keylist.add(randomIndex, key11);for (KeyLable key : keylist) {this.add(key);}// 关闭Labelfinal Image defaImage = createCloseImage(new Color(138, 180, 231), false);final Image focusImage = createCloseImage(new Color(30, 90, 150), true);final JLabel closeLabel = new JLabel(new ImageIcon(defaImage)) {JToolTip toolTip;protected void paintComponent(Graphics g) {super.paintComponent(g);ImageIcon icon = (ImageIcon) getIcon();if (icon != null) {g.drawImage(icon.getImage(), 0, 0, 12, 12, 0, 0, 12, 12, null);}}public JToolTip createToolTip() {JToolTip toolTip = new JToolTip();Color color = new Color(118, 118, 118);toolTip.setComponent(this);toolTip.setTipText(this.getToolTipText());toolTip.setBackground(Color.WHITE);toolTip.setForeground(color);toolTip.setFont(new Font(Font.DIALOG, Font.PLAIN, 12));Border outside = BorderFactory.createLineBorder(color);Border inside = BorderFactory.createEmptyBorder(2, 3, 2, 3);CompoundBorder border = BorderFactory.createCompoundBorder(outside, inside);toolTip.setBorder(border);return toolTip;}};MouseAdapter mouseAdapter = new MouseAdapter() {public void mouseClicked(MouseEvent e) {popupMenu.setVisible(false);}public void mouseEntered(MouseEvent e) {closeLabel.setIcon(new ImageIcon(focusImage));}public void mouseExited(MouseEvent e) {closeLabel.setIcon(new ImageIcon(defaImage));}};closeLabel.setToolTipText("关闭");closeLabel.addMouseListener(mouseAdapter);closeLabel.setPreferredSize(new Dimension(12, 12));add(closeLabel);} else if (rowType == RowType.second) {// key1至key10是一个闭环顺序，通过随机数决定在哪个位置切断这个环从而使其变成单链KeyLable key1 = new KeyLable("+", "=", SoftKeyBoardPanel.this);KeyLable key2 = new KeyLable("|", "\\", SoftKeyBoardPanel.this);KeyLable key3 = new KeyLable("{", "[", SoftKeyBoardPanel.this);KeyLable key4 = new KeyLable("}", "]", SoftKeyBoardPanel.this);KeyLable key5 = new KeyLable(":", ";", SoftKeyBoardPanel.this);KeyLable key6 = new KeyLable("\"", "'", SoftKeyBoardPanel.this);KeyLable key7 = new KeyLable("<", ",", SoftKeyBoardPanel.this);KeyLable key8 = new KeyLable(">", ".", SoftKeyBoardPanel.this);KeyLable key9 = new KeyLable("?", "/", SoftKeyBoardPanel.this);KeyLable key10 = new KeyLable("_", "-", SoftKeyBoardPanel.this);KeyLable key11 = new KeyLable("Shift", true, SoftKeyBoardPanel.this);// 功能键，位置固定在最左key11.setPreferredSize(new Dimension(35, 25));KeyLable key12 = new KeyLable("CapsLock", true, SoftKeyBoardPanel.this);// 功能键，位置固定在最右key12.setPreferredSize(new Dimension(65, 25));keys = new KeyLable[] { key11, key2, key3, key4, key5, key6, key7, key8, key9, key10, key1, key12 };ArrayList<KeyLable> keylist = new ArrayList<KeyLable>(keys.length);int randomIndex = random.nextInt(keys.length - 2) + 1;// 随机切入点，排除key11和key12的位置keylist.add(key11);for (int i = randomIndex; i < keys.length - 1; i++) {keylist.add(keys[i]);}for (int i = 1; i < randomIndex; i++) {keylist.add(keys[i]);}keylist.add(key12);for (KeyLable key : keylist) {this.add(key);}} else if (rowType == RowType.third) {// key1至key13是一个闭环顺序，通过随机数决定在哪个位置切断这个环从而使其变成单链KeyLable key1 = new KeyLable("c", SoftKeyBoardPanel.this);KeyLable key2 = new KeyLable("d", SoftKeyBoardPanel.this);KeyLable key3 = new KeyLable("e", SoftKeyBoardPanel.this);KeyLable key4 = new KeyLable("f", SoftKeyBoardPanel.this);KeyLable key5 = new KeyLable("g", SoftKeyBoardPanel.this);KeyLable key6 = new KeyLable("h", SoftKeyBoardPanel.this);KeyLable key7 = new KeyLable("i", SoftKeyBoardPanel.this);KeyLable key8 = new KeyLable("j", SoftKeyBoardPanel.this);KeyLable key9 = new KeyLable("k", SoftKeyBoardPanel.this);KeyLable key10 = new KeyLable("l", SoftKeyBoardPanel.this);KeyLable key11 = new KeyLable("m", SoftKeyBoardPanel.this);KeyLable key12 = new KeyLable("a", SoftKeyBoardPanel.this);KeyLable key13 = new KeyLable("b", SoftKeyBoardPanel.this);keys = new KeyLable[] { key1, key2, key3, key4, key5, key6, key7, key8, key9, key10, key11, key12, key13 };ArrayList<KeyLable> keylist = new ArrayList<KeyLable>(keys.length);int randomIndex = random.nextInt(keys.length);// 随机切入点for (int i = randomIndex; i < keys.length; i++) {keylist.add(keys[i]);}for (int i = 0; i < randomIndex; i++) {keylist.add(keys[i]);}for (KeyLable key : keylist) {this.add(key);}} else if (rowType == RowType.fourth) {// key1至key13是一个闭环顺序，通过随机数决定在哪个位置切断这个环从而使其变成单链KeyLable key1 = new KeyLable("n", SoftKeyBoardPanel.this);KeyLable key2 = new KeyLable("o", SoftKeyBoardPanel.this);KeyLable key3 = new KeyLable("p", SoftKeyBoardPanel.this);KeyLable key4 = new KeyLable("q", SoftKeyBoardPanel.this);KeyLable key5 = new KeyLable("r", SoftKeyBoardPanel.this);KeyLable key6 = new KeyLable("s", SoftKeyBoardPanel.this);KeyLable key7 = new KeyLable("t", SoftKeyBoardPanel.this);KeyLable key8 = new KeyLable("u", SoftKeyBoardPanel.this);KeyLable key9 = new KeyLable("v", SoftKeyBoardPanel.this);KeyLable key10 = new KeyLable("w", SoftKeyBoardPanel.this);KeyLable key11 = new KeyLable("x", SoftKeyBoardPanel.this);KeyLable key12 = new KeyLable("y", SoftKeyBoardPanel.this);KeyLable key13 = new KeyLable("z", SoftKeyBoardPanel.this);keys = new KeyLable[] { key1, key2, key3, key4, key5, key6, key7, key8, key9, key10, key11, key12, key13 };ArrayList<KeyLable> keylist = new ArrayList<KeyLable>(keys.length);int randomIndex = random.nextInt(keys.length);// 随机切入点for (int i = randomIndex; i < keys.length; i++) {keylist.add(keys[i]);}for (int i = 0; i < randomIndex; i++) {keylist.add(keys[i]);}for (KeyLable key : keylist) {this.add(key);}}}public KeyLable[] getKeys() {return keys;}}}// 键标签public static class KeyLable extends JLabel {// 用String而不是char考虑有功能键显示的是文字，不想再多一个字段了String centerKey;String lowerLeftKey;boolean isBackSpace;boolean isCapsLock;boolean isShift;boolean isPressed;KeyStatus status = KeyStatus.normal;Dimension size = new Dimension(24, 24);Color keyBorderColor = new Color(54, 112, 184);Color keyBorderFocusColor = new Color(64, 194, 241);Color keyBackColor = new Color(253, 255, 255);Color keyBackFocusColor = new Color(28, 159, 228);Font boldFont = new Font("微软雅黑", Font.PLAIN, 12);Color boldColor = new Color(0, 0, 57);Font plainFont = new Font("微软雅黑", Font.PLAIN, 10);Color plainColor = new Color(156, 157, 197);public KeyLable(String centerKey, ActionListener action) {this(centerKey, null, action);}public KeyLable(String centerKey, String lowerLeftKey, ActionListener action) {this(centerKey, lowerLeftKey, false, action);}public KeyLable(String centerKey, boolean isFunctionKey, ActionListener action) {this(centerKey, null, isFunctionKey, action);}public KeyLable(String centerKey, String lowerLeftKey, boolean isFunctionKey, final ActionListener action) {this.centerKey = centerKey;this.lowerLeftKey = lowerLeftKey;if (isFunctionKey) {// 这个变量主要是提高效率if (centerKey.indexOf("Shift") >= 0) {isShift = true;} else if (centerKey.indexOf("Back") >= 0 || centerKey.indexOf("Space") >= 0) {isBackSpace = true;} else if (centerKey.indexOf("Caps") >= 0 || centerKey.indexOf("Lock") >= 0) {isCapsLock = true;}}setOpaque(true);// 不透明setBackground(keyBackColor);setPreferredSize(size);setBorder(BorderFactory.createLineBorder(keyBorderColor));setFont(boldFont);addMouseListener(new MouseAdapter() {public void mouseEntered(MouseEvent e) {KeyLable.this.setBackground(keyBackFocusColor);// 鼠标悬浮时的背景色}public void mouseExited(MouseEvent e) {// 如果不是Shift和CapsLock键则还原背景色，或者是Shift和CapsLock键但是不是按压状态也要还原背景色if ((!KeyLable.this.isShift && !KeyLable.this.isCapsLock) || (!isPressed)) {KeyLable.this.setBackground(keyBackColor);}}public void mouseClicked(MouseEvent e) {// 创建一个ActionEvent将KeyLable对象作为Sourceaction.actionPerformed(new ActionEvent(KeyLable.this, ActionEvent.ACTION_PERFORMED, e.getID() + ""));}});}@Overrideprotected void paintComponent(Graphics g) {super.paintComponent(g);// 完成背景色的绘制Graphics2D g2d = (Graphics2D) g;ImageTool.setAntiAliasing(g2d);// 抗锯齿Container parent = getParent();ImageTool.clearAngle(g2d, parent != null ? parent.getBackground() : this.getBackground(), this.getWidth(), this.getHeight(), 4);// 清除角落变圆角if (getMousePosition() != null) {// 如果鼠标正在这个键的范围内，绘制圆角边框g2d.setPaint(keyBorderFocusColor);g2d.drawRoundRect(1, 1, getWidth() - 3, getHeight() - 3, 4, 4);}if (status == KeyStatus.normal || status == KeyStatus.capsLock) {if (lowerLeftKey == null) {g2d.setFont(boldFont);g2d.setPaint(boldColor);// g2d.drawString(centerKey, isCommKey() ? 8 : 4, 17);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, centerKey, -1, isCommKey() ? 8 : 4, 17);} else {g2d.setFont(plainFont);g2d.setPaint(plainColor);// g2d.drawString(centerKey, 12, 15);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, centerKey, -1, 12, 15);g2d.setFont(boldFont);g2d.setPaint(boldColor);// g2d.drawString(lowerLeftKey, 3, 20);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, lowerLeftKey, -1, 3, 20);}} else if (status == KeyStatus.shift || status == KeyStatus.shiftAndCapsLock) {if (lowerLeftKey == null) {g2d.setFont(boldFont);g2d.setPaint(boldColor);// g2d.drawString(centerKey, isCommKey() ? 8 : 4, 17);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, centerKey, -1, isCommKey() ? 8 : 4, 17);} else {g2d.setFont(boldFont);g2d.setPaint(boldColor);// g2d.drawString(centerKey, 10, 15);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, centerKey, -1, 10, 15);g2d.setFont(plainFont);g2d.setPaint(plainColor);// g2d.drawString(lowerLeftKey, 3, 20);SwingUtilities2.drawStringUnderlineCharAt(this, g2d, lowerLeftKey, -1, 3, 20);}}}public String getCenterKey() {return centerKey;}public String getLowerLeftKey() {return lowerLeftKey;}public boolean isBackSpace() {return isBackSpace;}public boolean isCapsLock() {return isCapsLock;}public boolean isShift() {return isShift;}public void setPressed(boolean isPressed) {this.isPressed = isPressed;}public boolean isPressed() {return isPressed;}public boolean isCommKey() {return !isBackSpace && !isCapsLock && !isShift;}// 重置public void reset() {this.isPressed = false;if (isShift || isCapsLock) {KeyLable.this.setBackground(keyBackColor);} else if (isCommKey()) {if (lowerLeftKey == null) {centerKey = centerKey.toLowerCase();}}status = KeyStatus.normal;repaint();}// 设置状态public void setStatus(KeyStatus status) {if (isCommKey() && this.status != status) {if (status == KeyStatus.shift || status == KeyStatus.capsLock) {if (lowerLeftKey == null) {if (Character.isUpperCase(centerKey.charAt(0))) {centerKey = centerKey.toLowerCase();} else {centerKey = centerKey.toUpperCase();}}} else if (status == KeyStatus.normal || status == KeyStatus.shiftAndCapsLock) {if (lowerLeftKey == null) {centerKey = centerKey.toLowerCase();}}this.status = status;repaint();}}}public static enum RowType {first, second, third, fourth}public static enum KeyStatus {normal, shift, capsLock, shiftAndCapsLock}}class ImageTool {// 设置Graphics2D抗锯齿,具体请查看RenderingHints类的APIpublic static void setAntiAliasing(Graphics2D g2d) {setRenderingHint(g2d, RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);}public static void setRenderingHint(Graphics2D g2d, Key key, Object value) {if (g2d.getRenderingHints() == null) {g2d.setRenderingHints(new RenderingHints(key, value));} else {g2d.setRenderingHint(key, value);}}// 绘制圆角public static void drawRoundRect(Graphics2D g2d, int width, int height, int r, Paint anglePaint, Paint[] borderPaints) {clearAngle(g2d, anglePaint, width, height, r);// 清除角落drawMultiBorder(g2d, width, height, r, anglePaint, borderPaints);// 画边框}// 清除角落public static void clearAngle(Graphics2D g2d, Paint anglePaint, int width, int height, int r) {setAntiAliasing(g2d);Composite oldComposite = g2d.getComposite();if (anglePaint == null) {g2d.setComposite(AlphaComposite.Clear);// 设置Composite为清空} else {g2d.setPaint(anglePaint);}int npoints = 5;// 5点定位一个角落轨迹// 左上角int[] xpoints1 = { r, 0, 0, r / 4, r / 2 };int[] ypoints1 = { 0, 0, r, r / 2, r / 4 };Polygon polygon = new Polygon(xpoints1, ypoints1, npoints);g2d.fillPolygon(polygon);// 右上角int[] xpoints2 = { width - r, width, width, width - r / 4, width - (r / 2) };int[] ypoints2 = ypoints1;polygon = new Polygon(xpoints2, ypoints2, npoints);g2d.fillPolygon(polygon);// 右下角int[] xpoints3 = xpoints2;int[] ypoints3 = { height, height, height - r, height - (r / 2), height - r / 4 };polygon = new Polygon(xpoints3, ypoints3, npoints);g2d.fillPolygon(polygon);// 左下角int[] xpoints4 = xpoints1;int[] ypoints4 = ypoints3;polygon = new Polygon(xpoints4, ypoints4, npoints);g2d.fillPolygon(polygon);// 还原Compositeg2d.setComposite(oldComposite);}// 绘制有层次感的边框public static void drawMultiBorder(Graphics2D g2d, int width, int height, int r, Paint anglePaint, Paint[] borderPaints) {setAntiAliasing(g2d);int roundx = r * 2;int roundy = roundx;int grow = 2;int x = 0;int y = 0;int w = width;int h = height;// 从外层往内层开始画for (int i = 0; i < borderPaints.length; i++, x++, y++, w -= grow, h -= grow) {g2d.setPaint(borderPaints[i]);if (r > 0) {g2d.drawRoundRect(x, y, w - 1, h - 1, roundx, roundy);} else {g2d.drawRect(x, y, w - 1, h - 1);}}}}

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