Java – move jlabel to another jlabel GUI
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Java
I'm trying to move jlabel to another jlabel, and now only one timer works It should run like a train through the track, always around the track, and finally start from it all the way back I don't know how to make it all the way. I appreciate any help
thank you.
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.JTextField;
import java.awt.Color;
import javax.swing.JSlider;
import javax.swing.SwingConstants;
import javax.swing.border.BevelBorder;
public class MoveLabel {
private JTextField textField;
private JTextField tf;
private JTextField textField_1;
private JTextField textField_2;
private JTextField textField_3;
private JTextField textField_5;
private JTextField textField_6;
private JTextField textField_7;
private JTextField textField_8;
private JTextField textField_9;
private JTextField textField_10;
private JTextField textField_11;
private JTextField textField_12;
private JTextField textField_13;
private JTextField textField_14;
private JTextField textField_15;
private JTextField textField_16;
private JTextField textField_17;
private JTextField textField_18;
private JTextField textField_19;
private JTextField textField_20;
private JTextField textField_21;
private JTextField textField_22;
private JTextField textField_23;
private JTextField textField_24;
private JTextField textField_25;
private JTextField textField_26;
private JSlider slider;
private JSlider slider_1;
private JSlider slider_2;
public static void main(String[] args) {
new MoveLabel();
}
public MoveLabel() {
EventQueue.invokelater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | illegalaccessexception | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new BorderLayout());
TestPane testPane = new TestPane();
testPane.setBackground(Color.WHITE);
frame.getContentPane().add(testPane);
textField = new JTextField();
textField.setBounds(100,138,20,20);
testPane.add(textField);
textField.setColumns(10);
textField_1 = new JTextField();
textField_1.setColumns(10);
textField_1.setBounds(80,44,20);
testPane.add(textField_1);
textField_2 = new JTextField();
textField_2.setColumns(10);
textField_2.setBounds(120,20);
testPane.add(textField_2);
textField_3 = new JTextField();
textField_3.setColumns(10);
textField_3.setBounds(160,20);
testPane.add(textField_3);
textField_5 = new JTextField();
textField_5.setColumns(10);
textField_5.setBounds(140,20);
testPane.add(textField_5);
textField_6 = new JTextField();
textField_6.setColumns(10);
textField_6.setBounds(160,20);
testPane.add(textField_6);
textField_7 = new JTextField();
textField_7.setColumns(10);
textField_7.setBounds(120,20);
testPane.add(textField_7);
textField_8 = new JTextField();
textField_8.setColumns(10);
textField_8.setBounds(80,59,20);
testPane.add(textField_8);
textField_9 = new JTextField();
textField_9.setColumns(10);
textField_9.setBounds(80,75,20);
testPane.add(textField_9);
textField_10 = new JTextField();
textField_10.setColumns(10);
textField_10.setBounds(80,90,20);
testPane.add(textField_10);
textField_11 = new JTextField();
textField_11.setColumns(10);
textField_11.setBounds(80,106,20);
testPane.add(textField_11);
textField_12 = new JTextField();
textField_12.setColumns(10);
textField_12.setBounds(80,123,20);
testPane.add(textField_12);
textField_13 = new JTextField();
textField_13.setColumns(10);
textField_13.setBounds(179,20);
testPane.add(textField_13);
textField_14 = new JTextField();
textField_14.setColumns(10);
textField_14.setBounds(199,20);
testPane.add(textField_14);
textField_15 = new JTextField();
textField_15.setColumns(10);
textField_15.setBounds(80,20);
testPane.add(textField_15);
textField_16 = new JTextField();
textField_16.setColumns(10);
textField_16.setBounds(100,20);
testPane.add(textField_16);
textField_17 = new JTextField();
textField_17.setColumns(10);
textField_17.setBounds(140,20);
testPane.add(textField_17);
textField_18 = new JTextField();
textField_18.setColumns(10);
textField_18.setBounds(179,20);
testPane.add(textField_18);
textField_19 = new JTextField();
textField_19.setColumns(10);
textField_19.setBounds(199,20);
testPane.add(textField_19);
textField_20 = new JTextField();
textField_20.setColumns(10);
textField_20.setBounds(219,63,20);
testPane.add(textField_20);
textField_21 = new JTextField();
textField_21.setColumns(10);
textField_21.setBounds(219,20);
testPane.add(textField_21);
textField_22 = new JTextField();
textField_22.setBackground(Color.WHITE);
textField_22.setColumns(10);
textField_22.setBounds(219,20);
testPane.add(textField_22);
textField_23 = new JTextField();
textField_23.setColumns(10);
textField_23.setBounds(219,20);
testPane.add(textField_23);
textField_24 = new JTextField();
textField_24.setColumns(10);
textField_24.setBounds(219,99,27);
testPane.add(textField_24);
textField_25 = new JTextField();
textField_25.setColumns(10);
textField_25.setBounds(219,83,20);
testPane.add(textField_25);
textField_26 = new JTextField();
textField_26.setColumns(10);
textField_26.setBounds(219,20);
testPane.add(textField_26);
slider_2 = new JSlider();
slider_2.setMaximum(3);
slider_2.setPaintTicks(true);
slider_2.setSnapToTicks(true);
slider_2.setOrientation(SwingConstants.VERTICAL);
slider_2.setBounds(533,260,57,229);
testPane.add(slider_2);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public static class TestPane extends JPanel {
protected static final int PLAY_TIME = 4000;
private JLabel label;
private JTextField tf;
private int targetX;
private int targetY;
private int targetX2;
private int targetY2;
private long startTime;
private long startTime2;
private final int startX;
private final int startY;
private final int startX2;
private final int startY2;
public TestPane() {
setLayout(null);
tf = new JTextField("");
tf.setSize(20,20);
tf.setBackground(Color.red);
add(tf);
Dimension size = getPreferredSize();
startX = 80;
startY = 44;
/* targetX = (size.width - label.getSize().width) / 2;
targetY = (size.height - label.getSize().height) / 2;
*/
targetX = 140;
targetY = 44;
Timer timer = new Timer(40,new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int x = tf.getX();
int y = tf.getY();
long duration = System.currentTimeMillis() - startTime;
float progress = (float)duration / (float)PLAY_TIME;
if (progress > 1f) {
progress = 1f;
((Timer)(e.getSource())).stop();
}
x = startX + (int)Math.round((targetX - startX) * progress);
y = startY + (int)Math.round((targetY - startY) * progress);
tf.setLocation(x,y);
}
});
startTime = System.currentTimeMillis();
timer.start();
/* try {
Thread.sleep(10);
}
catch (InterruptedException ie) {
ie.printStackTrace();
}
if (timer.isRunning() != true)
{
timer.stop();
}*/
startX2 = targetX;
startY2 = targetY;
tf.setLocation(startX,startY);
/* targetX = (size.width - label.getSize().width) / 2;
targetY = (size.height - label.getSize().height) / 2;
*/
targetX2 = 219;
targetY2 = 44;
Timer timer2 = new Timer(40,new ActionListener() {
public void actionPerformed(ActionEvent e) {
int x2 = tf.getX();
int y2 = tf.getY();
long duration = System.currentTimeMillis() - startTime2;
float progress = (float)duration / (float)PLAY_TIME;
if (progress > 1f)
{
progress = 1f;
((Timer)(e.getSource())).stop();
}
x2 = startX2 + (int)Math.round((targetX2 - startX2) * progress);
y2 = startY2 + (int)Math.round((targetY2 - startY2) * progress);
tf.setLocation(x2,y2);
tf.getLocation();
}
});
startTime2 = System.currentTimeMillis();
if (timer.isRunning() == false)
{
//
timer2.start();
}
else
{
timer2.setDelay(10);
}
}
@Override
public Dimension getPreferredSize() {
return new Dimension(600,500);
}
}
}
Solution
NB: I don't like null layout. I don't condone null layout. I'd rather use custom painting, but it's a lot of work unrelated to the problem The purpose of this example is to focus on the implementation of timeline and keyframe animation
Because you have to move the object through the X / y position, but moving in different directions in the same time period will become a very complex problem
You can try to set up four linked timers, which trigger the next timer when they are finished, and all timers execute different parts of the animation... But frankly, it really gets a mess soon
A better idea is to use the concepts of timelines and keyframes The idea is that on the timeline (0 - 1), some events occur at a specified time (key frame) Then the timeline will blend between these keyframes
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class MoveLabel {
public static void main(String[] args) {
new MoveLabel();
}
public MoveLabel() {
EventQueue.invokelater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | illegalaccessexception | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new BorderLayout());
TestPane testPane = new TestPane();
testPane.setBackground(Color.WHITE);
frame.getContentPane().add(testPane);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public static class TestPane extends JPanel {
private JTextField tf;
private List<JTextField> tracks;
protected static final int PLAY_TIME = 4000;
private Timeline timeline;
private long startTime;
public TestPane() {
setLayout(null);
tracks = new ArrayList<JTextField>(20);
int x = 20;
int y = 20;
for (int index = 0; index < 6; index++) {
x += 20;
tracks.add(createTrack(x,y,20));
}
for (int index = 0; index < 6; index++) {
y += 20;
tracks.add(createTrack(x,20));
}
for (int index = 0; index < 6; index++) {
x -= 20;
tracks.add(createTrack(x,20));
}
for (int index = 0; index < 6; index++) {
y -= 20;
tracks.add(createTrack(x,20));
}
for (JTextField track : tracks) {
add(track);
}
tf = new JTextField("");
tf.setSize(20,20);
tf.setBackground(Color.red);
add(tf);
setComponentZOrder(tf,0);
timeline = new Timeline();
timeline.add(0,new Point(20,20));
timeline.add(0.25f,new Point(20 * 7,20));
timeline.add(0.5f,20 * 7));
timeline.add(0.75f,20 * 7));
timeline.add(1f,20));
Timer timer = new Timer(40,new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
long duration = System.currentTimeMillis() - startTime;
float progress = (float) duration / (float) PLAY_TIME;
if (progress > 1f) {
startTime = System.currentTimeMillis();
progress = 0;
// ((Timer) (e.getSource())).stop();
}
Point p = timeline.getPointAt(progress);
tf.setLocation(p);
}
});
startTime = System.currentTimeMillis();
timer.start();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(600,500);
}
protected JTextField createTrack(int x,int y,int width,int height) {
JTextField field = new JTextField();
field.setBounds(x,width,height);
field.setEditable(false);
field.setFocusable(false);
return field;
}
}
public static class Timeline {
private Map<Float,KeyFrame> mapEvents;
public Timeline() {
mapEvents = new TreeMap<>();
}
public void add(float progress,Point p) {
mapEvents.put(progress,new KeyFrame(progress,p));
}
public Point getPointAt(float progress) {
if (progress < 0) {
progress = 0;
} else if (progress > 1) {
progress = 1;
}
KeyFrame[] keyFrames = getKeyFramesBetween(progress);
float max = keyFrames[1].progress - keyFrames[0].progress;
float value = progress - keyFrames[0].progress;
float weight = value / max;
return blend(keyFrames[0].getPoint(),keyFrames[1].getPoint(),1f - weight);
}
public KeyFrame[] getKeyFramesBetween(float progress) {
KeyFrame[] frames = new KeyFrame[2];
int startAt = 0;
Float[] keyFrames = mapEvents.keySet().toArray(new Float[mapEvents.size()]);
while (startAt < keyFrames.length && keyFrames[startAt] <= progress) {
startAt++;
}
if (startAt >= keyFrames.length) {
startAt = keyFrames.length - 1;
}
frames[0] = mapEvents.get(keyFrames[startAt - 1]);
frames[1] = mapEvents.get(keyFrames[startAt]);
return frames;
}
protected Point blend(Point start,Point end,float ratio) {
Point blend = new Point();
float ir = (float) 1.0 - ratio;
blend.x = (int)(start.x * ratio + end.x * ir);
blend.y = (int)(start.y * ratio + end.y * ir);
return blend;
}
public class KeyFrame {
private float progress;
private Point point;
public KeyFrame(float progress,Point point) {
this.progress = progress;
this.point = point;
}
public float getProgress() {
return progress;
}
public Point getPoint() {
return point;
}
}
}
}
Then you can do some stupid things, such as changing the speed between parts
timeline = new Timeline(); timeline.add(0,20)); timeline.add(0.1f,20)); timeline.add(0.5f,20 * 7)); timeline.add(0.6f,20 * 7)); timeline.add(1f,20));
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