/** Resumes the animation if it has been interrupted in its playing state. */
private void resumeAnimation() {
if (state == STATE_INTERRUPTED) {
// resume the interrupted animation
svgAnimator.play();
state = STATE_PLAYING;
}
}
/** Pauses the animation if it is being played. */
private void interruptAnimation() {
if (state == STATE_PLAYING) {
svgAnimator.pause();
state = STATE_INTERRUPTED;
}
// Otherwise, the animation is paused or stopped.
}
public void destroyApp(boolean unconditional) {
if (state != STATE_STOPPED) {
svgAnimator.stop();
state = STATE_STOPPED;
}
svgAnimator = null;
svgCanvas = null;
System.gc();
}
public void keyPressed(int keyCode) {
if ((keyCode == KEY_PLAY) && (state != STATE_PLAYING)) {
svgAnimator.play();
state = STATE_PLAYING;
System.err.println("PLAYING...");
}
if ((keyCode == KEY_PAUSE) && (state == STATE_PLAYING)) {
svgAnimator.pause();
state = STATE_PAUSED;
System.err.println("PAUSED...");
}
if ((keyCode == KEY_STOP) && (state != STATE_STOPPED)) {
svgAnimator.stop();
svg.setCurrentTime(0);
state = STATE_STOPPED;
System.err.println("STOPPED...");
}
}
public void startApp() {
if (svgCanvas == null) {
// If there is a splash screen defined, show it immediately.
boolean hasSplash = ((splashImageName != null) && !"".equals(splashImageName));
if (hasSplash) {
InputStream splashStream = getClass().getResourceAsStream(splashImageName);
try {
Image splashImage = Image.createImage(splashStream);
splashCanvas = new SplashCanvas(splashImage);
} catch (IOException ioe) {
ioe.printStackTrace();
hasSplash = false;
}
if (splashCanvas != null) {
Display.getDisplay(this).setCurrent(splashCanvas);
}
}
long start = System.currentTimeMillis();
// Get input stream to the SVG image stored in the MIDlet's jar.
InputStream svgDemoStream = getClass().getResourceAsStream(svgImageName);
// Build an SVGImage instance from the stream
svgImage = null;
if (svgDemoStream != null) {
try {
svgImage = (SVGImage) SVGImage.createImage(svgDemoStream, null);
} catch (IOException io) {
io.printStackTrace();
}
}
if (svgImage == null) {
throw new Error(ERROR_COULD_NOT_LOAD_SVG + svgImageName);
}
// Build an SVGAnimator from the SVGImage. The SVGAnimator will handle
// all the animation details and run the SVG animation in a
// Canvas instance.
svgAnimator = SVGAnimator.createAnimator(svgImage);
// Set to 10 fps (frames per second)
svgAnimator.setTimeIncrement(0.01f);
// Get the Canvas managed by the SVGAnimator and set the
// svgImage's size to the canvas display area.
svgCanvas = (Canvas) svgAnimator.getTargetComponent();
svgImage.setViewportWidth(svgCanvas.getWidth());
svgImage.setViewportHeight(svgCanvas.getHeight());
// Hook the exit command so that we can exit the animation demo.
svgCanvas.addCommand(exitCommand);
svgCanvas.setCommandListener(this);
// The SVG root element is used to reset the time on a stop operation.
doc = svgImage.getDocument();
svg = (SVGSVGElement) doc.getDocumentElement();
// Hook-in key listeners to play, pause and stop the animation.
svgAnimator.setSVGEventListener(this);
long end = System.currentTimeMillis();
if (hasSplash) {
long waitMore = SPLASH_MIN_LENGTH - (end - start);
if (waitMore > 0) {
try {
Thread.currentThread().sleep(waitMore);
} catch (InterruptedException ie) {
// Do nothing.
}
}
}
if (autoStart) {
svgAnimator.play();
state = STATE_PLAYING;
System.err.println("PLAYING...");
}
}
Display.getDisplay(this).setCurrent(svgCanvas);
resumeAnimation();
}