Java 编写 闹钟程序 使用路径绘制指针 可选择闹铃音乐

package clock; 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.LayoutManager; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.geom.Ellipse2D; import java.awt.geom.GeneralPath; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFileChooser; import javax.swing.JPanel; import javax.swing.JTextField; public class GDIClock extends JPanel { // private int radius; private double s = 0.03; public GDIClock() { setBackground(Color.GRAY); setLayout(null); // radius = 50; } // // @Override // public Dimension getPreferredSize() { // Insets insets = getInsets(); // int r = (int) (radius == -1 ? 0 : radius * (1 + s)) + 1; // return new Dimension(r * 2 + insets.left + insets.right, r * 2 // + insets.top + insets.bottom); // } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); Time time = new Time(); Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Insets insets = getInsets(); int wid = getWidth(); int hei = getHeight() - insets.top - insets.bottom; int r = (int) ((Math.min(wid, hei)) / 2 / (1 + s)); g2d.translate(insets.left + r * (1 + s), insets.top + r * (1 + s)); g2d.scale(1, -1); for (int i = 0; i < 60; i++) { int angle = 90 - i * 6; double pos[] = calcPos(r, angle); paintMinuteDot(r, g2d, pos[0], pos[1], i % 5 == 0); } paintHourPointer(r, time, g2d); paintMinutePointer(r, time, g2d); paintSecondPointer(r, time, g2d); paintCenterPoint(g2d); if (Alarm.selected == true) { paintAlarmSecondPointer(r, g2d); } g2d.setColor(Color.BLACK); g2d.translate(-insets.left - r * (1 + s), -insets.top - r * (1 + s)); g2d.scale(1, -1); g2d.setFont(new Font("Serif", Font.BOLD, 40)); g2d.drawString(time.getDate(), getWidth() - 330, -getHeight() + 50); g2d.drawString( time.getHour() + ":" + time.getMinute() + ":" + time.getSecond(), getWidth() - 330, -getHeight() + 100); if (Alarm.selected == true) { g2d.drawString("Current Alarm:", getWidth() - 330, -100); g2d.drawString(Alarm.hourT.getText() + ":" + Alarm.minuteT.getText() + ":" + Alarm.secondT.getText(), getWidth() - 330, -50); } } private double[] calcPos(double r, double angle) { double radian = Math.toRadians(angle); double x = r * Math.cos(radian); double y = r * Math.sin(radian); return new double[] { x, y }; } private Shape createPointerShape(double r1, double r2, double r3, double angle) { GeneralPath gp = new GeneralPath(); double[] pos = calcPos(r1, angle); double[] pos1 = calcPos(r2, angle + 90); gp.append(new Line2D.Double(pos[0], pos[1], pos1[0], pos1[1]), true); double[] pos2 = calcPos(r3, angle + 180); gp.lineTo((float) pos2[0], (float) pos2[1]); double[] pos3 = calcPos(r2, angle + 270); gp.lineTo((float) pos3[0], (float) pos3[1]); gp.closePath(); return gp; } private void paintCenterPoint(Graphics2D g2d) { g2d.setColor(Color.BLUE); Rectangle2D rect = new Rectangle2D.Double(-2, -2, 4, 4); g2d.fill(rect); } private void paintMinuteDot(int r, Graphics2D g2d, double x, double y, boolean flag) { g2d.setColor(flag ? Color.RED : Color.BLACK); if (flag) { Ellipse2D elli = new Ellipse2D.Double(x - r * s, y - r * s, r * s * 2, r * s * 2); g2d.fill(elli); } else { Ellipse2D elli = new Ellipse2D.Double(x - r * 0.02, y - r * 0.02, r * 0.04, r * 0.04); g2d.fill(elli); } } private void paintHourPointer(int r, Time time, Graphics2D g2d) { double angle = 90 - (time.getHour() + time.getMinute() / 60.0 + time .getSecond() / 3600.0) * 30; Shape pointerShape = createPointerShape(r * 0.6, r * 0.06, r * 0.1, angle); g2d.setColor(Color.BLUE); g2d.fill(pointerShape); } private void paintMinutePointer(int r, Time time, Graphics2D g2d) { double angle = 90 - (time.getMinute() + time.getSecond() / 60.0) * 6; Shape pointerShape = createPointerShape(r * 0.8, r * 0.04, r * 0.08, angle); g2d.setColor(Color.CYAN); g2d.fill(pointerShape); } private void paintSecondPointer(int r, Time time, Graphics2D g2d) { g2d.setColor(Color.BLACK); int angle = 90 - time.getSecond() * 6; double pos[] = calcPos(r * 0.9, angle); double pos1[] = calcPos(r * 0.2, angle + 180); Line2D line = new Line2D.Double(pos1[0], pos1[1], pos[0], pos[1]); g2d.draw(line); } private void paintAlarmSecondPointer(int r, Graphics2D g2d) { g2d.setColor(Color.YELLOW); int angle = 90 - Integer.parseInt(Alarm.secondT.getText()) * 6; System.out.print(Integer.parseInt(Alarm.secondT.getText())); double pos[] = calcPos(r * 0.9, angle); double pos1[] = calcPos(r * 0.2, angle + 180); Line2D line = new Line2D.Double(pos1[0], pos1[1], pos[0], pos[1]); g2d.draw(line); } }