/**
* @param sampleLegendFile
* @return
*/
private Dimension getSizeFromSample(File sampleLegendFile) {
PngReader pngReader = null;
try {
// reads size using PNGJ reader, that can read metadata without reading
// the full image
pngReader = new PngReader(sampleLegendFile);
return new Dimension(pngReader.imgInfo.cols, pngReader.imgInfo.rows);
} finally {
if (pngReader != null) {
pngReader.close();
}
}
}
