模拟PPT 实现播放图片

来源：互联网发布：老男孩python 编辑：程序博客网时间：2024/04/30 20:00
代码如下
package com.xiaoqiang;import java.awt.Component;import java.awt.Container;import java.awt.Graphics;import java.awt.Image;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.io.File;import javax.swing.Icon;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.event.AncestorListener;/** * 本案例模拟PPT * @author xiaoqiang * @time 2017年5月6日 */public class SimulationPPT extends JFrame implements ActionListener,MouseListener{    private Container con;    private final String filePath = "./src/pic/";    private File[] files = null;    private ImageIcon[] imageIcons = null;    private ImageIcon[] smallImageIcons = null;    private JLabel centerLabel = new JLabel();    private JButton nextPic = new JButton("下一页");    private JButton previousPic = new JButton("上一页");    private JLabel[] labels = new JLabel[6];    private int nowPage = 0;    private final int MAX_PAGE = 1;//最大页数    private final int MIN_PAGE = 0;//最小页数    public SimulationPPT() {        this.draw();    }    private void draw() {        con = this.getContentPane();        con.setLayout(null);        this.getImageIcon();        this.getSmallImageIcon();        this.setCenterLabel(0);        con.add(centerLabel);        con.add(nextPic);        con.add(previousPic);        centerLabel.setBounds(700, 100, 512, 512);        previousPic.setBounds(100, 720, 100, 100);        nextPic.setBounds(1680, 720, 100, 100);        centerLabel.addMouseListener(this);        previousPic.addActionListener(this);        nextPic.addActionListener(this);        for (int i = 0; i < labels.length; i++) {            labels[i] = new JLabel(smallImageIcons[i]);            con.add(labels[i]);            labels[i].setBounds(300+230*i, 700, 128, 128);            labels[i].addMouseListener(this);        }           this.setSize(Toolkit.getDefaultToolkit().getScreenSize());        this.setVisible(true);    }    private void loadPage() {        for (int i = 0; i < labels.length; i++) {            labels[i].setIcon(smallImageIcons[i+nowPage*6]);        }     }    /**     * 设置最中间 大图片的位置     * @param i     */    private void setCenterLabel(int i) {        centerLabel.setIcon(imageIcons[i]);    }    private ImageIcon[] getImageIcon(){        files = new File(filePath).listFiles();        imageIcons = new ImageIcon[files.length];        for (int i = 0; i < imageIcons.length; i++) {            imageIcons[i] = new ImageIcon(files[i].getAbsolutePath());        }        return imageIcons;    }    /**     * 把图片转化为小图片     * @return     */    private ImageIcon[] getSmallImageIcon(){        Image[] images = new Image[imageIcons.length];        Image[] changedImages = new Image[imageIcons.length];        smallImageIcons = new ImageIcon[imageIcons.length];        for (int i = 0; i < images.length; i++) {            images[i] = imageIcons[i].getImage();            changedImages[i] = images[i].getScaledInstance(128, 128, Image.SCALE_REPLICATE);            smallImageIcons[i] = new ImageIcon(changedImages[i]);        }        return smallImageIcons;    }    public static void main(String[] args) {        new SimulationPPT();    }    @Override    public void actionPerformed(ActionEvent e) {        if("上一页".equals(e.getActionCommand())){            if(nowPage == MIN_PAGE){                JOptionPane.showMessageDialog(this, "已经是第一页");            }else{                nowPage--;                this.loadPage();                    }        } else if("下一页".equals(e.getActionCommand())){            if(nowPage == MAX_PAGE){                JOptionPane.showMessageDialog(this, "已经最后一页");            }else{                nowPage++;                this.loadPage();                    }        }    }    @Override    public void mouseClicked(MouseEvent e) {        int i=-1;        while(!e.getSource().equals(labels[++i]));        System.out.println(i);        this.setCenterLabel(i+nowPage*6);    }    @Override    public void mousePressed(MouseEvent e) {    }    @Override    public void mouseReleased(MouseEvent e) {    }    @Override    public void mouseEntered(MouseEvent e) {    }    @Override    public void mouseExited(MouseEvent e) {    }}
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