34 lines
1.0 KiB
Java
34 lines
1.0 KiB
Java
package org.thoughtcrime.securesms.mediasend;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Matrix;
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import androidx.annotation.NonNull;
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import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
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import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
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import java.security.MessageDigest;
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public class FlipTransformation extends BitmapTransformation {
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@Override
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protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform, int outWidth, int outHeight) {
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Bitmap output = pool.get(toTransform.getWidth(), toTransform.getHeight(), toTransform.getConfig());
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Canvas canvas = new Canvas(output);
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Matrix matrix = new Matrix();
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matrix.setScale(-1, 1);
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matrix.postTranslate(toTransform.getWidth(), 0);
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canvas.drawBitmap(toTransform, matrix, null);
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return output;
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}
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@Override
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public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {
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messageDigest.update(FlipTransformation.class.getSimpleName().getBytes());
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}
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}
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