I have a strange problem, I can figure it out.
here is my program running:
the clock on the right shouldn't even be there, it should just be string that displays the time. I create two different objects and add them to a content panel, then add the content panel to the JFrame
. I also have a menu bar that I add to the JFrame
and it shows up on the right side of the content pane. Here is my main class:
class DigitalClock3DialsView extends DigitalClockView {
private static int caps[] = { BasicStroke.CAP_BUTT,
BasicStroke.CAP_SQUARE, BasicStroke.CAP_ROUND};
private static int joins[] = { BasicStroke.JOIN_MITER,
BasicStroke.JOIN_BEVEL, BasicStroke.JOIN_ROUND};
private static Color colors[] = {Color.gray, Color.pink, Color.lightGray};
private static BasicStroke bs1 = new BasicStroke(1.0f);
// three arms of clock
private Line2D lines[] = new Line2D[3];
private int rAmt[] = new int[lines.length];
private int speed[] = new int[lines.length];
private BasicStroke strokes[] = new BasicStroke[lines.length];
private GeneralPath path;
private Point2D[] pts;
private float size;
private Ellipse2D ellipse = new Ellipse2D.Double();
private BufferedImage bimg;
//variables to keep track if minutes or hours increased
private int oldMinute;
private int oldHour;
/**
* init background
*/
public void init() {
setBackground(Color.white);
}
/**
* reset view: the shape of arms, etc
*/
public void reset(int w, int h)
{
oldMinute = 0;
oldHour = 0;
size = (w > h) ? h/6f : w/6f;
for (int i = 0; i < lines.length; i++) {
lines[i] = new Line2D.Float(0,0,size,0);
strokes[i] = new BasicStroke(size/3, caps[i], joins[i]);
rAmt[i] = 270; // vertical
}
//speed of the 3 arms
speed[0] = 6;
speed[1] = 6;
speed[2] = 6;
path = new GeneralPath();
path.moveTo(size, -size/2);
path.lineTo(size+size/2, 0);
path.lineTo(size, +size/2);
// YW: do not know how to show the regular clock view
// with inc of 5 mins on the contour
// can you help to fix this?
ellipse.setFrame(w/2-size*2-4.5f,h/2-size*2-4.5f,size*4,size*4);
double linApproxLen = 0.75 * size * 0.258819; // sin(15 degree)
PathIterator pi = ellipse.getPathIterator(null, linApproxLen);
Point2D[] points = new Point2D[100];
int num_pts = 0;
while ( !pi.isDone() )
{
float[] pt = new float[6];
switch ( pi.currentSegment(pt) ) {
case FlatteningPathIterator.SEG_MOVETO:
case FlatteningPathIterator.SEG_LINETO:
points[num_pts] = new Point2D.Float(pt[0], pt[1]);
num_pts++;
}
pi.next();
}
pts = new Point2D[num_pts];
System.arraycopy(points, 0, pts, 0, num_pts);
}
private Point2D[] computePoints(double w, double h, int n)
{
Point2D points[] = new Point2D[n];
double angleDeltaRad = Math.PI * 2 / n;
for (int i=0; i<n; i++)
{
double angleRad = i * angleDeltaRad;
double ca = Math.cos(angleRad);
double sa = Math.sin(angleRad);
double x = sa * w/2;
double y = ca * h/2;
points[i] = new Point2D.Double(x,y);
}
return points;
}
public void paint(Graphics g)
{
System.out.printf("seconds: %s, minutes: %d \n", second, minute);
Dimension d = getSize();
updateSecond(d.width, d.height);
if(oldMinute < minute || (oldMinute==59 && minute==0))
{
oldMinute = minute;
updateMinute(d.width, d.height);
}
if(oldHour < hour || (oldHour==12 && hour == 1) )
{
oldHour = hour;
updateHour(d.width, d.height);
}
Graphics2D g2 = createGraphics2D(d.width, d.height);
drawClockArms(d.width, d.height, g2);
g2.dispose();
g.drawImage(bimg, 0, 0, this);
}
public Graphics2D createGraphics2D(int w, int h) {
// standard Java 2D code
Graphics2D g2 = null;
if (bimg == null || bimg.getWidth() != w || bimg.getHeight() != h) {
bimg = (BufferedImage) createImage(w, h);
reset(w, h);
}
g2 = bimg.createGraphics();
g2.setBackground(getBackground());
g2.clearRect(0, 0, w, h);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
return g2;
}
private void drawClockArms(int w, int h, Graphics2D g2) {
ellipse.setFrame(w/2-size,h/2-size,size*2,size*2);
g2.setColor(Color.black);
g2.draw(ellipse);
for (int i = 0; i < lines.length; i++) {
AffineTransform at = AffineTransform.getTranslateInstance(w/2,h/2);
at.rotate(Math.toRadians(rAmt[i]));
g2.setStroke(strokes[i]);
g2.setColor(colors[i]);
g2.draw(at.createTransformedShape(lines[i]));
g2.draw(at.createTransformedShape(path));
}
g2.setStroke(bs1);
g2.setColor(Color.black);
for (int i = 0; i < pts.length; i++) {
ellipse.setFrame(pts[i].getX(), pts[i].getY(), 9, 9);
g2.draw(ellipse);
}
}
/**
* step forward on the display: move arm forward
*/
public void step(int w, int h) {
for (int i = 0; i < lines.length; i++)
{
rAmt[i] += speed[i];
System.out.println(rAmt[i]);
if (rAmt[i] == 360) {
rAmt[i] = 0;
}
}
}
public void updateSecond(int w, int h) {
rAmt[0] += speed[0];
if (rAmt[0] == 360) {
rAmt[0] = 0;
}
}
public void updateMinute(int w, int h) {
rAmt[1] += speed[1];
if (rAmt[1] == 360) {
rAmt[1] = 0;
}
}
public void updateHour(int w, int h) {
rAmt[2] += speed[2];
if (rAmt[2] == 360) {
rAmt[2] = 0;
}
}
}
and here is the parent class that extends JPanel
:
/**
* Digital Clock view base classes
*/
abstract class DigitalClockView extends JPanel
{
protected int second = 0;
protected int minute = 0;
protected int hour = 0;
public void draw()
{
this.repaint();
}
public void updateTime(int second, int minute, int hour)
{
this.second = second;
this.minute = minute;
this.hour = hour;
}
public abstract void paint(Graphics g);
}
my menu buttons are showing on the right side when I use the menu bar. It's almost as if it is just cloning the view on the left side and showing it on the right side again. Why is this?