与定时器设置动画的JPanel（在载玻片）(animate JPanel (slide in) wi

2019-09-01 14:40发布

站内文章 / 移动开发
33 0 0

我想使用这个类我取得了令从侧面一个JPanel幻灯片： 

public class AnimationClass {

    private int i;
    private int y;
    private JPanel panel;
    private int xTo;
    private Timer timer;
    private int xFrom;

    synchronized void slidePanelInFromRight(JPanel panelInput, int xFromInput, int xToInput, int yInput, int width, int height) {
        this.panel = panelInput;
        this.xFrom = xFromInput;
        this.xTo = xToInput;
        this.y = yInput;

            panel.setSize(width, height);

            timer = new Timer(0, new ActionListener() {
                public void actionPerformed(ActionEvent ae) {

                    for (int i = xFrom; i > xTo; i--) {
                        panel.setLocation(i, y);
                        panel.repaint();
                        i--;

                        timer.stop();
                        timer.setDelay(100);

                        if (i >= xTo) {
                            timer.stop();
                        }
                    }
                    timer.stop();

                }
            });
            timer.start();

    }

}

好了，我不知道是什么问题。 我已经尝试了很多不同的东西，但我似乎不喜欢我可以得到它的工作。

Answer 1:

计时器应在每个刻度改变位置，直到它在的地方，而是在每个tick，你通过运行一个for-next循环，这是阻塞EDT直到循环结束，从更新UI预防

更新与范例

例如... 

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestAnimatedPane {

    public static void main(String[] args) {
        new TestAnimatedPane();
    }

    public TestAnimatedPane() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private JPanel panel;

        public TestPane() {
            setLayout(null);
            panel = new JPanel();
            panel.setBackground(Color.RED);
            add(panel);
            Dimension size = getPreferredSize();

            Rectangle from = new Rectangle(size.width, (size.height - 50) / 2, 50, 50);
            Rectangle to = new Rectangle((size.width - 50) / 2, (size.height - 50) / 2, 50, 50);

            Animate animate = new Animate(panel, from, to);
            animate.start();

        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }

    }

    public static class Animate {

        public static final int RUN_TIME = 2000;

        private JPanel panel;
        private Rectangle from;
        private Rectangle to;

        private long startTime;

        public Animate(JPanel panel, Rectangle from, Rectangle to) {
            this.panel = panel;
            this.from = from;
            this.to = to;
        }

        public void start() {
            Timer timer = new Timer(40, new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    long duration = System.currentTimeMillis() - startTime;
                    double progress = (double)duration / (double)RUN_TIME;
                    if (progress > 1f) {
                        progress = 1f;
                        ((Timer)e.getSource()).stop();
                    }
                    Rectangle target = calculateProgress(from, to, progress);
                    panel.setBounds(target);
                }
            });
            timer.setRepeats(true);
            timer.setCoalesce(true);
            timer.setInitialDelay(0);
            startTime = System.currentTimeMillis();
            timer.start();
        }

    }

    public static Rectangle calculateProgress(Rectangle startBounds, Rectangle targetBounds, double progress) {

        Rectangle bounds = new Rectangle();

        if (startBounds != null && targetBounds != null) {

            bounds.setLocation(calculateProgress(startBounds.getLocation(), targetBounds.getLocation(), progress));
            bounds.setSize(calculateProgress(startBounds.getSize(), targetBounds.getSize(), progress));

        }

        return bounds;

    }

    public static Point calculateProgress(Point startPoint, Point targetPoint, double progress) {

        Point point = new Point();

        if (startPoint != null && targetPoint != null) {

            point.x = calculateProgress(startPoint.x, targetPoint.x, progress);
            point.y = calculateProgress(startPoint.y, targetPoint.y, progress);

        }

        return point;

    }

    public static int calculateProgress(int startValue, int endValue, double fraction) {

        int value = 0;
        int distance = endValue - startValue;
        value = (int)Math.round((double)distance * fraction);
        value += startValue;

        return value;

    }

    public static Dimension calculateProgress(Dimension startSize, Dimension targetSize, double progress) {

        Dimension size = new Dimension();

        if (startSize != null && targetSize != null) {

            size.width = calculateProgress(startSize.width, targetSize.width, progress);
            size.height = calculateProgress(startSize.height, targetSize.height, progress);

        }

        return size;

    }
}

更新

我应该在昨天晚上已经加入此（1年谁不想去睡觉，2对父母做了，不多说了...）

动画是复杂的话题，尤其是当你开始看变速（例子中是静态的）。

相反，重新发明轮子的，你应该认真考虑考虑看看...

  • 计时框架 -这是基地的动画框架，即不作任何你可能想如何使用它的假设。
  • 三叉戟 -到计时框架类似，但也有基于Swing组件的支持（通过反射）建立
  • 通用吐温引擎


Answer 2:

此公因式分解例如容易承认下面的变化。 它利用所述封闭板的优选尺寸在JLayeredPane 。 

/**
 * @see https://stackoverflow.com/a/16322007/230513
 * @see https://stackoverflow.com/a/16316345/230513
 */
public class TestPane extends JLayeredPane {

    private static final int WIDE = 200;
    private static final int HIGH = 5 * WIDE / 8; // ~1/phi
    private JPanel panel;

    public TestPane() {
        panel = new JPanel();
        panel.setBackground(Color.RED);
        panel.add(new JButton("Test"));
        add(panel);

        Dimension size = panel.getPreferredSize();
        int half = HIGH / 2 - size.height / 2;
        Rectangle from = new Rectangle(size);
        from.translate(WIDE, half);
        Rectangle to = new Rectangle(size);
        to.translate(0, half);
        panel.setBounds(from);

        Animate animate = new Animate(panel, from, to);
        animate.start();
    }

    @Override
    public Dimension getPreferredSize() {
        return new Dimension(WIDE, HIGH);
    }
}


Answer 3:

有一些在OP代码的问题。 如MadProrammer分，只应移动每计时器滴答一个步骤。 下面是一个简单，测试校正到OPS代码即一次移动的JPanel一个像素，25次。 需要注意的评论： 

synchronized void slidePanelInFromRight(JPanel panelInput, int xFromInput, int xToInput, int yInput, int width, int height) {
this.panel = panelInput;
this.xFrom = xFromInput;
this.xTo = xToInput;
this.y = yInput;

    panel.setSize(width, height);

    // timer runs 25 times per second
    timer = new Timer(40, new ActionListener() {
        public void actionPerformed(ActionEvent ae) {

            // Must 'remember' where we have slid panel to by using instance variable rather than automatic variable
            // Only move one step at a time.
            // No need to restart timer, it continues to run until stopped
            if (xFrom > xTo){
                xFrom = xFrom - 1;
                panel.setLocation(xFrom, y);
                panel.repaint();
            } else {
                timer.stop();
           }

            panel.setLocation(xFrom, y);
            panel.repaint();

        }
    });
    timer.start();

}


Answer 4:

例如任何滑动

    package TestingPackage;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class ToggleBtn extends JPanel {

    JFrame frame;
    JPanel panelOut;
    JLabel labelOn;
    JLabel labelOff;
    JButton btn;
    int count = 1;

    public ToggleBtn() {
        frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setBounds(500, 300, 300, 300);
        frame.setLayout(null);

        panelOut = new JPanel(null);
        panelOut.setBounds(50, 100, 120, 30);
        panelOut.setBackground(Color.gray);
        frame.add(panelOut);

        btn = new JButton("::");
        btn.setBounds(0, 0, 60, 30);
        panelOut.add(btn);
        btn.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                startThread();
            }
        });
        labelOn = new JLabel("ON");
        labelOn.setBounds(0, 0, 60, 30);
        panelOut.add(labelOn);

        labelOff = new JLabel("OFF");
        labelOff.setBounds(60, 0, 60, 30);
        panelOut.add(labelOff);

        frame.setVisible(true);
    }

    public void startThread() {
        count++;
        new Move().start();
    }

    public static void main(String[] args) {
        new ToggleBtn();
    }

    class Move extends Thread {

        @Override
        public void run() {
            if (count % 2 == 0) {
                System.out.println("if");
                for (int i = 0; i <= 60; i++) {
                    try {
                        Thread.sleep(3);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(ToggleBtn.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    btn.setBounds(i, 0, 60, 30);
                }

            } else {
                System.out.println("else");
                for (int i = 60; i >= 0; i--) {
                    try {
                        Thread.sleep(3);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(ToggleBtn.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    btn.setBounds(i, 0, 60, 30);
                }
            }
        }
    }
}


文章来源: animate JPanel (slide in) with timer
标签： java swing animation timer jpanel
举报

收藏的人(0)

Ta的文章 更多文章
登录 后发表评论
0条评论
还没有人评论过~