Implement equals() and hashCode() methods (#105)

* Implement equals() and hashCode() methods

* Oops: Replace by static final to prevent String class name generation for every call on hashCodes() & updateDiskCacheKey() methods

transformations/src/main/java/jp/wasabeef/glide/transformations/BitmapTransformation.java

@@ -31,8 +31,6 @@ import java.security.MessageDigest;
 
 public abstract class BitmapTransformation implements Transformation<Bitmap> {
 
-  public abstract String key();
-
   @Override
   public final Resource<Bitmap> transform(Context context, Resource<Bitmap> resource, int outWidth,
       int outHeight) {
@@ -59,7 +57,11 @@ public abstract class BitmapTransformation implements Transformation<Bitmap> {
   protected abstract Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
       @NonNull Bitmap toTransform, int outWidth, int outHeight);
 
-  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
-    messageDigest.update(key().getBytes());
-  }
+  @Override public abstract void updateDiskCacheKey(MessageDigest messageDigest);
+
+  @Override
+  public abstract boolean equals(Object o);
+
+  @Override
+  public abstract int hashCode();
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java

@@ -24,11 +24,16 @@ import android.os.Build;
 import android.renderscript.RSRuntimeException;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.wasabeef.glide.transformations.internal.FastBlur;
 import jp.wasabeef.glide.transformations.internal.RSBlur;
 
 public class BlurTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.BlurTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private static int MAX_RADIUS = 25;
   private static int DEFAULT_DOWN_SAMPLING = 1;
 
@@ -77,7 +82,22 @@ public class BlurTransformation extends BitmapTransformation {
     return bitmap;
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "BlurTransformation(radius=" + radius + ", sampling=" + sampling + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof BlurTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/ColorFilterTransformation.java

@@ -24,9 +24,14 @@ import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 
 public class ColorFilterTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.ColorFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private int color;
 
   public ColorFilterTransformation(int color) {
@@ -51,7 +56,22 @@ public class ColorFilterTransformation extends BitmapTransformation {
     return bitmap;
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "ColorFilterTransformation(color=" + color + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof ColorFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropCircleTransformation.java

@@ -22,6 +22,7 @@ import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 import com.bumptech.glide.load.resource.bitmap.TransformationUtils;
 import com.bumptech.glide.request.RequestOptions;
+import java.security.MessageDigest;
 
 /**
  * @deprecated Use {@link RequestOptions#circleCrop()}.
@@ -29,12 +30,31 @@ import com.bumptech.glide.request.RequestOptions;
 @Deprecated
 public class CropCircleTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.CropCircleTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
       @NonNull Bitmap toTransform, int outWidth, int outHeight) {
     return TransformationUtils.circleCrop(pool, toTransform, outWidth, outHeight);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "CropCircleTransformation()";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof CropCircleTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropSquareTransformation.java

@@ -21,9 +21,14 @@ import android.graphics.Bitmap;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 import com.bumptech.glide.load.resource.bitmap.TransformationUtils;
+import java.security.MessageDigest;
 
 public class CropSquareTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.CropSquareTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private int size;
 
   @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
@@ -32,7 +37,22 @@ public class CropSquareTransformation extends BitmapTransformation {
     return TransformationUtils.centerCrop(pool, toTransform, size, size);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "CropSquareTransformation(size=" + size + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof CropSquareTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropTransformation.java

@@ -22,9 +22,14 @@ import android.graphics.Canvas;
 import android.graphics.RectF;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 
 public class CropTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.CropTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   public enum CropType {
     TOP,
     CENTER,
@@ -74,11 +79,26 @@ public class CropTransformation extends BitmapTransformation {
     return bitmap;
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "CropTransformation(width=" + width + ", height=" + height + ", cropType=" + cropType
         + ")";
   }
 
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof CropTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
+
   private float getTop(float scaledHeight) {
     switch (cropType) {
       case TOP:
@@ -91,4 +111,5 @@ public class CropTransformation extends BitmapTransformation {
         return 0;
     }
   }
+
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/GrayscaleTransformation.java

@@ -24,9 +24,14 @@ import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Paint;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 
 public class GrayscaleTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.GrayscaleTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
       @NonNull Bitmap toTransform, int outWidth, int outHeight) {
     int width = toTransform.getWidth();
@@ -46,7 +51,22 @@ public class GrayscaleTransformation extends BitmapTransformation {
     return bitmap;
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "GrayscaleTransformation()";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof GrayscaleTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/MaskTransformation.java

@@ -25,10 +25,15 @@ import android.graphics.PorterDuffXfermode;
 import android.graphics.drawable.Drawable;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.wasabeef.glide.transformations.internal.Utils;
 
 public class MaskTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.MaskTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private static Paint paint = new Paint();
   private int maskId;
 
@@ -63,7 +68,22 @@ public class MaskTransformation extends BitmapTransformation {
     return bitmap;
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "MaskTransformation(maskId=" + maskId + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof MaskTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/RoundedCornersTransformation.java

@@ -26,8 +26,14 @@ import android.graphics.Shader;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 
+import java.security.MessageDigest;
+
 public class RoundedCornersTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.RoundedCornersTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   public enum CornerType {
     ALL,
     TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT,
@@ -229,8 +235,23 @@ public class RoundedCornersTransformation extends BitmapTransformation {
     canvas.drawRect(new RectF(margin + radius, margin + radius, right, bottom), paint);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "RoundedTransformation(radius=" + radius + ", margin=" + margin + ", diameter="
         + diameter + ", cornerType=" + cornerType.name() + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof RoundedCornersTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/BrightnessFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageBrightnessFilter;
 
 /**
@@ -23,6 +24,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageBrightnessFilter;
  */
 public class BrightnessFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.BrightnessFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float brightness;
 
   public BrightnessFilterTransformation() {
@@ -36,7 +41,22 @@ public class BrightnessFilterTransformation extends GPUFilterTransformation {
     filter.setBrightness(this.brightness);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "BrightnessFilterTransformation(brightness=" + brightness + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof BrightnessFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/ContrastFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageContrastFilter;
 
 /**
@@ -23,6 +24,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageContrastFilter;
  */
 public class ContrastFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.ContrastFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float contrast;
 
   public ContrastFilterTransformation() {
@@ -36,7 +41,22 @@ public class ContrastFilterTransformation extends GPUFilterTransformation {
     filter.setContrast(this.contrast);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "ContrastFilterTransformation(contrast=" + contrast + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof ContrastFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/GPUFilterTransformation.java

@@ -20,12 +20,17 @@ import android.content.Context;
 import android.graphics.Bitmap;
 import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImage;
 import jp.co.cyberagent.android.gpuimage.GPUImageFilter;
 import jp.wasabeef.glide.transformations.BitmapTransformation;
 
 public class GPUFilterTransformation extends BitmapTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.GPUFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private GPUImageFilter gpuImageFilter;
 
   public GPUFilterTransformation(GPUImageFilter filter) {
@@ -41,11 +46,26 @@ public class GPUFilterTransformation extends BitmapTransformation {
     return gpuImage.getBitmapWithFilterApplied();
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return getClass().getSimpleName();
   }
 
   @SuppressWarnings("unchecked") public <T> T getFilter() {
     return (T) gpuImageFilter;
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof GPUFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/InvertFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageColorInvertFilter;
 
 /**
@@ -23,11 +24,30 @@ import jp.co.cyberagent.android.gpuimage.GPUImageColorInvertFilter;
  */
 public class InvertFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.InvertFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   public InvertFilterTransformation() {
     super(new GPUImageColorInvertFilter());
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "InvertFilterTransformation()";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof InvertFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/KuwaharaFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageKuwaharaFilter;
 
 /**
@@ -26,6 +27,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageKuwaharaFilter;
  */
 public class KuwaharaFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.KuwaharaFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private int radius;
 
   public KuwaharaFilterTransformation() {
@@ -39,7 +44,22 @@ public class KuwaharaFilterTransformation extends GPUFilterTransformation {
     filter.setRadius(this.radius);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "KuwaharaFilterTransformation(radius=" + radius + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof KuwaharaFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/PixelationFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImagePixelationFilter;
 
 /**
@@ -25,6 +26,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImagePixelationFilter;
  */
 public class PixelationFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.PixelationFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float pixel;
 
   public PixelationFilterTransformation() {
@@ -38,7 +43,22 @@ public class PixelationFilterTransformation extends GPUFilterTransformation {
     filter.setPixel(this.pixel);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "PixelationFilterTransformation(pixel=" + pixel + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof PixelationFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/SepiaFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSepiaFilter;
 
 /**
@@ -25,6 +26,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageSepiaFilter;
  */
 public class SepiaFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.SepiaFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float intensity;
 
   public SepiaFilterTransformation() {
@@ -38,7 +43,22 @@ public class SepiaFilterTransformation extends GPUFilterTransformation {
     filter.setIntensity(this.intensity);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "SepiaFilterTransformation(intensity=" + intensity + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof SepiaFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/SketchFilterTransformation.java

@@ -16,15 +16,35 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSketchFilter;
 
 public class SketchFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.SketchFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   public SketchFilterTransformation() {
     super(new GPUImageSketchFilter());
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "SketchFilterTransformation()";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof SketchFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/SwirlFilterTransformation.java

@@ -17,6 +17,7 @@ package jp.wasabeef.glide.transformations.gpu;
  */
 
 import android.graphics.PointF;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSwirlFilter;
 
 /**
@@ -24,6 +25,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageSwirlFilter;
  */
 public class SwirlFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.SwirlFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float radius;
   private float angle;
   private PointF center;
@@ -48,8 +53,23 @@ public class SwirlFilterTransformation extends GPUFilterTransformation {
     filter.setCenter(this.center);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "SwirlFilterTransformation(radius=" + radius +
         ",angle=" + angle + ",center=" + center.toString() + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof SwirlFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/ToonFilterTransformation.java

@@ -16,6 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageToonFilter;
 
 /**
@@ -25,6 +26,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageToonFilter;
  */
 public class ToonFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.ToonFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private float threshold;
   private float quantizationLevels;
 
@@ -41,8 +46,23 @@ public class ToonFilterTransformation extends GPUFilterTransformation {
     filter.setQuantizationLevels(this.quantizationLevels);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "ToonFilterTransformation(threshold=" + threshold +
         ",quantizationLevels=" + quantizationLevels + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof ToonFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/VignetteFilterTransformation.java

@@ -17,6 +17,7 @@ package jp.wasabeef.glide.transformations.gpu;
  */
 
 import android.graphics.PointF;
+import java.security.MessageDigest;
 import java.util.Arrays;
 import jp.co.cyberagent.android.gpuimage.GPUImageVignetteFilter;
 
@@ -27,6 +28,10 @@ import jp.co.cyberagent.android.gpuimage.GPUImageVignetteFilter;
  */
 public class VignetteFilterTransformation extends GPUFilterTransformation {
 
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.gpu.VignetteFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
   private PointF center;
   private float[] vignetteColor;
   private float vignetteStart;
@@ -49,9 +54,24 @@ public class VignetteFilterTransformation extends GPUFilterTransformation {
     filter.setVignetteEnd(vignetteEnd);
   }
 
-  @Override public String key() {
+  @Override public String toString() {
     return "VignetteFilterTransformation(center=" + center.toString() +
         ",color=" + Arrays.toString(vignetteColor) +
         ",start=" + vignetteStart + ",end=" + vignetteEnd + ")";
   }
+
+  @Override
+  public boolean equals(Object o) {
+    return o instanceof VignetteFilterTransformation;
+  }
+
+  @Override
+  public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override
+  public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }