111 lines
3.5 KiB
Java
111 lines
3.5 KiB
Java
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Java Tiled Panel
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import java.awt.*;
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import java.awt.event.*;
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import java.awt.image.*;
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import javax.swing.*;
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public class JTiledPanel extends JPanel {
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private Image tileimage;
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private int tilewidth;
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private int tileheight;
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private Rectangle rb;
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private Insets ri;
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/**
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* Create a JTiledPanel with the given image.
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* The tile argument may be null, you can set it later
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* with setTileImage(). Note that a JTiledPanel is
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* always opaque.
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*/
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public JTiledPanel(Image tile) {
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super();
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setTileImage(tile);
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setOpaque(true);
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rb = new Rectangle(0,0,1,1);
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ri = new Insets(0,0,0,0);
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}
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/**
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* Create a JTiledPanel with the given image and
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* layout manager and double buffering status.
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* Either or both of the first two arguments
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* may be null.
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*/
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public JTiledPanel(Image tile, LayoutManager mgr, boolean isDB)
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{
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super(mgr, isDB);
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setTileImage(tile);
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setOpaque(true);
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rb = new Rectangle(0,0,1,1);
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ri = new Insets(0,0,0,0);
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}
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/**
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* Get the current tiling image, or null if there
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* isn't any right now.
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*/
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public Image getTileImage() { return tileimage; }
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public void setTileImage(Image tile) {
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tileimage = tile;
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tilewidth = 0;
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tileheight = 0;
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}
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/**
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* Paint this component
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*/
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public void paintComponent(Graphics g) {
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super.paintComponent(g);
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if (tileimage != null && tilewidth <= 0) {
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tileheight = tileimage.getHeight(this);
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tilewidth = tileimage.getWidth(this);
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}
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if (tileimage != null && tilewidth > 0) {
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Color bg = getBackground();
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getBounds(rb);
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Insets riv = getInsets(ri);
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rb.translate(riv.left, riv.top);
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rb.width -= (riv.left + riv.right);
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rb.height -= (riv.top + riv.bottom);
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Shape ccache = g.getClip();
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g.clipRect(rb.x, rb.y, rb.width, rb.height);
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int xp, yp;
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for(yp = rb.y; yp < rb.y + rb.height; yp += tileheight) {
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for(xp = rb.x; xp < rb.x + rb.width; xp += tilewidth) {
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g.drawImage(tileimage, xp, yp, bg, this);
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}
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}
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g.setClip(ccache);
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}
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}
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/**
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* Small main to do a self-test. Tiles with a image file
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* name taken from the command line. For example, if you
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* have a directory named images and an image in it
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* named tile1.gif then you would run this test
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* main as java JTiledPanel images/tile1.gif.
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*/
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public static void main(String [] args) {
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if (args.length == 0) {
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System.out.println("Usage: java JTiledPanel imagefile");
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System.exit(0);
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}
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JFrame f = new JFrame("Test JTiledPanel " + args[0]);
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ImageIcon ic = new ImageIcon(args[0]);
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JTiledPanel jtp = new JTiledPanel(ic.getImage());
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jtp.setBorder(BorderFactory.createMatteBorder(3,4,5,6,Color.green));
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jtp.add(new JButton("Press Me!"));
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jtp.add(new JButton("Press Me Too!"));
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f.getContentPane().add(jtp, BorderLayout.CENTER);
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f.setSize(350,290);
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f.show();
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f.addWindowListener(new WindowAdapter() {
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public void windowClosing(WindowEvent we) {
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System.exit(0);
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} });
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}
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}
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