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package jogamp.opengl.util.pngj.chunks;
import jogamp.opengl.util.pngj.ImageInfo;
import jogamp.opengl.util.pngj.PngHelperInternal;
import jogamp.opengl.util.pngj.PngjException;
/**
* tEXt chunk.
* <p>
* see http://www.w3.org/TR/PNG/#11tEXt
*/
public class PngChunkTEXT extends PngChunkTextVar {
public final static String ID = ChunkHelper.tEXt;
public PngChunkTEXT(ImageInfo info) {
super(ID, info);
}
@Override
public ChunkRaw createRawChunk() {
if (key.isEmpty())
throw new PngjException("Text chunk key must be non empty");
byte[] b = (key + "\0" + val).getBytes(PngHelperInternal.charsetLatin1);
ChunkRaw chunk = createEmptyChunk(b.length, false);
chunk.data = b;
return chunk;
}
@Override
public void parseFromRaw(ChunkRaw c) {
int i;
for (i = 0; i < c.data.length; i++)
if (c.data[i] == 0)
break;
key = new String(c.data, 0, i, PngHelperInternal.charsetLatin1);
i++;
val = i < c.data.length ? new String(c.data, i, c.data.length - i, PngHelperInternal.charsetLatin1) : "";
}
@Override
public void cloneDataFromRead(PngChunk other) {
PngChunkTEXT otherx = (PngChunkTEXT) other;
key = otherx.key;
val = otherx.val;
}
}
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