/**
* Sets one or more icons for the Display.
*
* <ul>
* <li>On Windows you should supply at least one 16x16 icon and one 32x32.
* <li>Linux (and similar platforms) expect one 32x32 icon.
* <li>Mac OS X should be supplied one 128x128 icon
* </ul>
*
* The implementation will use the supplied ByteBuffers with image data in RGBA and perform any
* conversions nescesarry for the specific platform.
*
* @param icons Array of icons in RGBA mode
* @return number of icons used.
*/
public int setIcon(ByteBuffer[] icons) {
boolean done_small = false;
boolean done_large = false;
int used = 0;
int small_icon_size = 16;
int large_icon_size = 32;
for (ByteBuffer icon : icons) {
int size = icon.limit() / 4;
if ((((int) Math.sqrt(size)) == small_icon_size) && (!done_small)) {
long small_new_icon = createIcon(small_icon_size, small_icon_size, icon.asIntBuffer());
sendMessage(hwnd, WM_SETICON, ICON_SMALL, small_new_icon);
freeSmallIcon();
small_icon = small_new_icon;
used++;
done_small = true;
}
if ((((int) Math.sqrt(size)) == large_icon_size) && (!done_large)) {
long large_new_icon = createIcon(large_icon_size, large_icon_size, icon.asIntBuffer());
sendMessage(hwnd, WM_SETICON, ICON_BIG, large_new_icon);
freeLargeIcon();
large_icon = large_new_icon;
used++;
done_large = true;
// Problem: The taskbar icon won't update until Windows sends a WM_GETICON to our window
// proc and we reply. But this method is usually called
// on init and it might take a while before the next call to nUpdate (because of resources
// being loaded, etc). So we wait for the next
// WM_GETICON message (usually received about 100ms after WM_SETICON) to make sure the
// taskbar icon has updated before we return to the user.
// (We wouldn't need to do this if the event loop was running continuously on its own
// thread.)
iconsLoaded = false;
// Track how long the wait takes and give up at 500ms, just in case.
long time = System.nanoTime();
long MAX_WAIT = 500L * 1000L * 1000L;
while (true) {
nUpdate();
if (iconsLoaded || MAX_WAIT < System.nanoTime() - time) break;
Thread.yield();
}
}
}
return used;
}
private void readPalette() {
RandomAccessFile rIn = null;
ByteBuffer buf = null;
int i;
try {
if (paletteFile != null) {
// see if the file exists, if not, set it to the default palette.
File file = new File(paletteFile);
numPaletteEntries = (int) (file.length() / 4);
buf = ByteBuffer.allocate(numPaletteEntries * 4);
rIn = new RandomAccessFile(paletteFile, "r");
FileChannel inChannel = rIn.getChannel();
inChannel.position(0);
inChannel.read(buf);
// Check the byte order.
buf.order(ByteOrder.LITTLE_ENDIAN);
buf.rewind();
IntBuffer ib = buf.asIntBuffer();
paletteData = new int[numPaletteEntries];
ib.get(paletteData);
ib = null;
}
} catch (Exception e) {
System.err.println("Caught exception: " + e.toString());
System.err.println(e.getStackTrace());
} finally {
if (rIn != null) {
try {
rIn.close();
} catch (Exception e) {
}
}
}
}
/**
* Reads an image from an archived file and return it as ByteBuffer object.
*
* @author Mike Butler, Kiet Le
*/
private ByteBuffer readImage(String filename, Dimension dim) {
if (dim == null) dim = new Dimension(0, 0);
ByteBuffer bytes = null;
try {
DataInputStream dis =
new DataInputStream(getClass().getClassLoader().getResourceAsStream(filename));
dim.width = dis.readInt();
dim.height = dis.readInt();
System.out.println("Creating buffer, width: " + dim.width + " height: " + dim.height);
// byte[] buf = new byte[3 * dim.height * dim.width];
bytes = BufferUtil.newByteBuffer(3 * dim.width * dim.height);
for (int i = 0; i < bytes.capacity(); i++) {
bytes.put(dis.readByte());
}
dis.close();
} catch (Exception e) {
e.printStackTrace();
}
bytes.rewind();
return bytes;
}
public static byte[] getNBOPort(short p) {
ByteBuffer buf = ByteBuffer.allocate(2);
buf.putShort((short) p);
buf.order(ByteOrder.BIG_ENDIAN);
buf.rewind();
byte[] rtn = new byte[2];
buf.get(rtn);
return rtn;
}
/**
* Check if the first X characters of a byte stream match a String.
*
* @param data The byte array to process
* @param pattern The String to match
* @return True if the pattern was found, false otherwise
*/
private static boolean bytesEqualsString(byte[] data, String pattern) {
byte[] bytes = new byte[pattern.length()];
Charset csets = Charset.forName("US-ASCII");
boolean fin = false;
int currChar = 0;
// remove any CR and/or LF characters at the beginning of the article
// data
while (!fin) {
if (currChar >= data.length) break;
byte in = data[currChar];
ByteBuffer bb = ByteBuffer.wrap(new byte[] {(byte) in});
CharBuffer cb = csets.decode(bb);
char c = cb.charAt(0);
if (data.length > 0 && (c == '\n' || c == '\r')) currChar++;
else fin = true;
if (data.length == 0) fin = true;
}
// extract bytes (chars) to check from article data
for (int i = 0; i < bytes.length && i < data.length; i++, currChar++) {
byte in = data[currChar];
bytes[i] = (byte) in;
}
// decode byte data to characters
ByteBuffer bb = ByteBuffer.wrap(bytes);
CharBuffer cb = csets.decode(bb);
// compare these characters to the pattern String
for (int i = 0; i < pattern.length(); i++) if (cb.charAt(i) != pattern.charAt(i)) return false;
return true;
}
public static byte[] getNBOHost(String h) {
if (h.equals(PEER)) return null;
byte hostBytes[] = h.getBytes();
int len = Array.getLength(hostBytes);
ByteBuffer buf = ByteBuffer.allocate(len);
buf.put(hostBytes);
buf.order(ByteOrder.BIG_ENDIAN);
buf.rewind();
return (buf.array());
}
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
float m[] = {
0.0f, 1.0f, 0.0f, 0.0f, //
0.0f, 0.0f, 1.0f, 0.0f, //
1.0f, 0.0f, 0.0f, 0.0f, //
0.0f, 0.0f, 0.0f, 1.0f
};
pixels = readImage("Data/leeds.bin", dim);
System.out.println(pixels.toString());
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glMatrixMode(GL.GL_COLOR);
gl.glLoadMatrixf(m, 0);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
