-/* ownCloud Android client application
- * Copyright (C) 2012-2014 ownCloud Inc.
+/**
+ * ownCloud Android client application
+ *
+ * @author David A. Velasco
+ * Copyright (C) 2015 ownCloud Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2,
import android.graphics.Matrix;
import android.graphics.BitmapFactory.Options;
import android.media.ExifInterface;
+import android.net.Uri;
+import android.webkit.MimeTypeMap;
+
+import java.io.File;
/**
* Utility class with methods for decoding Bitmaps.
- *
- * @author David A. Velasco
*/
public class BitmapUtils {
if (height > reqHeight || width > reqWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
-
+
+ // calculates the largest inSampleSize value (for smallest sample) that is a power of 2 and keeps both
+ // height and width **larger** than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
return resultBitmap;
}
-
+
+ /**
+ * Checks if file passed is an image
+ * @param file
+ * @return true/false
+ */
+ public static boolean isImage(File file) {
+ Uri selectedUri = Uri.fromFile(file);
+ String fileExtension = MimeTypeMap.getFileExtensionFromUrl(selectedUri.toString().toLowerCase());
+ String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
+
+ return (mimeType != null && mimeType.startsWith("image/"));
+ }
}