FCL/sf/app/jrt: comparison javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/ImageLoader.java

equal deleted inserted replaced

-:1f0034e370aa
+:71ad690e91f5
 package org.eclipse.swt.internal.qt.graphics;
 import java.io.*;
 import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Device;
 /**
 * ImageLoader is class for image loading from various data formats.
 *
 *
 public void setLoadSize(int width, int height) {
 	OS.imageLoader_setLoadSize(handle, width, height);
 }
 /**
+* Returns the bounds of an Image without creating an actual Image instance.
+*
+* @param is The InputStream from where to read the image data from
+* @return Bounds of the image
+*/
+public static Point getImageSize(InputStream is) throws IOException {
+if (is == null) {
+throw new NullPointerException("InputStream is null");
+}
+int bytesAvailable = is.available(); // may throw IOException
+if (bytesAvailable == 0) {
+throw new IllegalArgumentException("Empty file");
+}
+byte [] data = new byte[bytesAvailable];
+if (is.read(data, 0, data.length) != bytesAvailable) {
+throw new IOException("Could not load data from InputStream");
+}
+return OS.imageLoader_getImageSize(data);
+}
+/**
 * Private helper to check the state of the current instance.
 */
 private void checkState() {
 	Utils.validateUiThread();
 if (disposed) {