private void newImage(Buffer buffer) {
Object data = buffer.getData();
if (!(data instanceof int[])) return;
RGBFormat format = (RGBFormat) buffer.getFormat();
DirectColorModel dcm =
new DirectColorModel(
format.getBitsPerPixel(),
format.getRedMask(),
format.getGreenMask(),
format.getBlueMask());
sourceImage =
new MemoryImageSource(
format.getLineStride(),
format.getSize().height,
dcm,
(int[]) data,
0,
format.getLineStride());
sourceImage.setAnimated(true);
sourceImage.setFullBufferUpdates(true);
if (component != null) {
destImage = component.createImage(sourceImage);
component.prepareImage(destImage, component);
}
}
void createImage() {
if (imageSource == null) {
rgbCM = new DirectColorModel(32, 0xff0000, 0xff00, 0xff);
imageSource = new MemoryImageSource(width, height, rgbCM, rgbPixels, 0, width);
imageSource.setAnimated(true);
imageSource.setFullBufferUpdates(true);
awtImage = Toolkit.getDefaultToolkit().createImage(imageSource);
newPixels = false;
} else if (newPixels) {
imageSource.newPixels(rgbPixels, rgbCM, 0, width);
newPixels = false;
} else imageSource.newPixels();
}
void createGraphics() {
synchronized (
imagSync) { // The synchronized modifier allows the user to lock objects that are shared
// If you have more than one of your threads running at the same time that
// access shared objects, it may cause your object to be in an inconsitent state
// Making a method synchronized will lock the object. This means that no other thread can call
// a synchronized method on that object.
size =
new Dimension(
nChunks,
nBins); // The dimension class 'encapsulates the width and height of a component in a
// single object
// In this case i think the object imageSync
int width = nChunks;
int height = nBins; // nBins is the height maybe the no.of rows which get coloured in
screenBuffer =
new int[width * height]; // i think this creates an integer array called screenBuffer
screenConverter =
new MemoryImageSource(
width,
height, // The MemoryImageSource class--- This class is an implementation of the
// ImageProducer interface which uses an array to produce pixel values for an
// Image.
screenBuffer,
0,
width); // The MemoryImageSource is also capable of managing a memory image which
// varies over time to allow animation or custom rendering.
screenConverter.setAnimated(
true); // Changes this memory image into a multi-frame animation or a single-frame static
// image depending on the animated parameter.This is a multframe animation
screenConverter.setFullBufferUpdates(
false); // Specifies whether this animated memory image should always be updated by
// sending the complete buffer of pixels whenever there is a change.
offscreen =
Toolkit.getDefaultToolkit()
.createImage(
screenConverter); // Returns an image which gets pixel data from the specified
// file. there other possible create image
setPreferredSize(size);
}
}
