Hi, I am trying to make a java slider applet, this code seems to work perfectly in netscape and in appletviewer but with ie, i have to resize or move the browser before it will display the whole photo. If you can help me out that would rock.
I have included the file with this post also in case you dont feel like cut and paste.
Just rename file to Slider.java instead of .c
// CODE STARTS HERE
public class Slider extends Applet implements Runnable {
Tile grid[][];
public static AudioClip clinkSound,introSound,winSound,badSound;
public boolean intro = true, random = false;
Dimension GridSize;
Point blank;
Thread kicker = null;
Dimension appletSize;
int appletHeight;
int appletWidth;
Image imgBlock; // the image block
Image images[][]; // the constituent images
int num_images = 16; // number of images in block
int width; // width of each image in block
int height; // height of each image in block
int temp;
boolean first = true;
MediaTracker track;
public void init() {
int x,y,block=1,maxBlocks=16;
// Load the blocks...
cut("graphics/clock.jpg");
for (y=0;y<GridSize.height;y++)
for (x=0;x<GridSize.width;x++) {
if ( block < maxBlocks ) {
grid[y][x] = new Tile(images[x][y],block);
block++;
}
else {
grid[y][x] = new Tile(null,0);
blank = new Point(x,y);
}
}
update(this.getGraphics());
// repaint();
}
public boolean action(Event evt, Object arg) {
if ( arg.equals("Randomize") ) {
random = true;
repaint();
}
return true;
}
private void randomize(Graphics g){
int i,iter=GridSize.height*GridSize.width*GridSize.width;
Point from;
for (i=0; i<iter;i++) {
if ( Math.random() > 0.5 )
move(new Point(blank.x,(int)(Math.random() * GridSize.height)));
else
move(new Point((int)(Math.random() * GridSize.width),blank.y));
drawGrid(g);
}
}
public void run() {
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
while (kicker != null) {
repaint();
try {
Thread.sleep(100);
} catch (InterruptedException e){}
}
}
private void drawAll() {
int x,y;
for (y=0;y<GridSize.height;y++)
for (x=0;x<GridSize.width;x++)
grid[y][x].changed = true;
repaint();
}
public void paint(Graphics g) {
drawAll();
}
public void start() {
if ( kicker == null ) {
kicker = new Thread(this);
kicker.start();
}
}
public void stop() {
if ( intro )
introSound.stop();
kicker = null;
}
public void update(Graphics g) {
if ( random )
randomize(g);
else{
drawGrid(g);
}
random = false;
}
private void drawGrid(Graphics g) {
int x,y;
// Only draw blocks that have changed to improve display speed.
for (y=0;y<GridSize.height;y++)
for (x=0;x<GridSize.width;x++) {
if ( grid[y][x].changed ) {
if ( grid[y][x].number != 0 )
g.drawImage(grid[y][x].img,x*width,y*height,this);
else {
g.clearRect(x*width,y*height,width,height);
}
grid[y][x].changed = false;
}
}
}
private boolean solved() {
// Return true if the puzzle is solved, otherwise false
int y,x,block=1,iter = GridSize.height * GridSize.width;
for (y=0;y<GridSize.height;y++)
for (x=0;x<GridSize.width;x++)
if ( block < iter )
if ( grid[y][x].number != block++ )
return false;
return true;
}
private int delta(int a,int b) {
// Return the direction to move the block in
if ( a == b ) return 0;
else return((b-a)/Math.abs(b-a));
}
public boolean mouseDown(Event evt, int x, int y) {
blank = from; // blank is now here...
return true;
}
public void cut(String inStr) {
Image imgBlock = getImage(getCodeBase(), inStr);
System.out.println(getCodeBase() + "\n" + inStr);
// wait for image to load
// (here's how to do it without using MediaTracker)
//while (imgBlock.getWidth(this) <0);
track.addImage(imgBlock,0);
System.out.println("Loading Images");
//wait for image to finish loading //
try{
track.waitForAll();
} catch (InterruptedException e){}
/////////////////////////////////////////////////////////////////
// Extract the constituent images from a imgBlock.
// There are num_images to extract, each with the
// specified width and height.
public void extractImages(Image imgBlock,
Image images[][],
int num_images,
int width,
int height) {
ImageProducer source = imgBlock.getSource();
for (int i = 0; i<4; i++) {
for (int j = 0; j<4; j++) {
// define filter to pull image at (i*width,j*height) with
// dimensions (width,height)
ImageFilter extractFilter = new CropImageFilter(i*width,
j*height,
width,
height);
// define producer from source and filter
ImageProducer producer =
new FilteredImageSource(source,extractFilter);
Do you have a url where we can see this in action? I'm using version 1.3, so I don't know if I converted the deprecated methods correctly (action, mouseDown). Plus the phony graphics/clock.jpg I used supposedly errors out.
Also, do you have a suggested height and width? So far, all I get is the button "Randomize" and on the console, I get:
From what I understand, the order is repaint, update, paint. But you have paint calling drawAll which calls repaint (which would eventually call paint which calls drawAll). Did you want an infinite loop?
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