public boolean dispose() {
if (decoder.imageComplete(ImageConsumer.SINGLEFRAMEDONE, false) == 0) {
return false;
} else {
if (delay > 0) {
try {
if (verbose) {
System.out.println("sleeping: " + delay);
}
Thread.sleep(delay);
} catch (InterruptedException e) {
return false;
}
} else {
Thread.yield();
}
if (verbose && disposal_method != 0) {
System.out.println("disposal method: " + disposal_method);
}
int global_width = decoder.global_width;
int global_height = decoder.global_height;
if (x < 0) {
width += x;
x = 0;
}
if (x + width > global_width) {
width = global_width - x;
}
if (width <= 0) {
disposal_method = DISPOSAL_NONE;
} else {
if (y < 0) {
height += y;
y = 0;
}
if (y + height > global_height) {
height = global_height - y;
}
if (height <= 0) {
disposal_method = DISPOSAL_NONE;
}
}
switch (disposal_method) {
case DISPOSAL_PREVIOUS:
byte[] saved_image = decoder.saved_image;
IndexColorModel saved_model = decoder.saved_model;
if (saved_image != null) {
setPixels(
x, y, width, height, saved_model, saved_image, y * global_width + x, global_width);
}
break;
case DISPOSAL_BGCOLOR:
byte tpix;
if (model.getTransparentPixel() < 0) {
model = trans_model;
if (model == null) {
model = new IndexColorModel(8, 1, new byte[4], 0, true);
trans_model = model;
}
tpix = 0;
} else {
tpix = (byte) model.getTransparentPixel();
}
int rassize = width * height;
byte[] rasfill = new byte[rassize];
if (tpix != 0) {
for (int i = 0; i < rassize; i++) {
rasfill[i] = tpix;
}
}
// setPixels(x, y, width, height, model, rasfill, 0, 0);
setPixels(x, y, width, height, model, rasfill, 0, width);
break;
case DISPOSAL_SAVE:
decoder.saved_model = model;
break;
}
}
return true;
}
private void setPixels(int x, int y, int w, int h, ColorModel cm, byte[] pix, int off, int scan) {
decoder.setPixels(x, y, w, h, cm, pix, off, scan);
}