look at only subset of pixels to check for alpha
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53a038d90e
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ca496fd39f
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@ -18,6 +18,7 @@ import android.net.Uri;
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import android.os.Build;
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import android.os.Environment;
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import android.os.ParcelFileDescriptor;
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import android.os.SystemClock;
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import android.provider.MediaStore;
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import android.provider.OpenableColumns;
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import android.system.Os;
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@ -223,8 +224,12 @@ public class FileBackend {
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}
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private static boolean hasAlpha(final Bitmap bitmap) {
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for (int x = 0; x < bitmap.getWidth(); ++x) {
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for (int y = 0; y < bitmap.getWidth(); ++y) {
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final int w = bitmap.getWidth();
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final int h = bitmap.getHeight();
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final int yStep = Math.max(1, w / 100);
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final int xStep = Math.max(1, h / 100);
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for (int x = 0; x < w; x += xStep) {
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for (int y = 0; y < h; y += yStep) {
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if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
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return true;
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}
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@ -707,7 +712,7 @@ public class FileBackend {
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private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException, ImageCompressionException {
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final File parent = file.getParentFile();
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if (parent.mkdirs()) {
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Log.d(Config.LOGTAG,"created parent directory");
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Log.d(Config.LOGTAG, "created parent directory");
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}
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InputStream is = null;
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OutputStream os = null;
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@ -1180,7 +1185,7 @@ public class FileBackend {
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}
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}
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if (file.delete()) {
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Log.d(Config.LOGTAG,"deleted "+file.getAbsolutePath());
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Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
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}
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}
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