make avatar rounding independent of image size

app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java

@@ -226,7 +226,7 @@ public final class ComposeActivity extends BaseActivity
                 composeAvatar.setImageResource(R.drawable.avatar_default);
             } else {
                 Picasso.with(this).load(activeAccount.getProfilePictureUrl())
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(25))
                         .error(R.drawable.avatar_default)
                         .placeholder(R.drawable.avatar_default)
                         .into(composeAvatar);

app/src/main/java/com/keylesspalace/tusky/adapter/MentionAutoCompleteAdapter.java

@@ -129,7 +129,7 @@ public class MentionAutoCompleteAdapter extends ArrayAdapter<Account>
                 Picasso.with(context)
                         .load(account.getAvatar())
                         .placeholder(R.drawable.avatar_default)
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(25))
                         .into(avatar);
             }
         }

app/src/main/java/com/keylesspalace/tusky/adapter/NotificationsAdapter.java

@@ -284,7 +284,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter {
                 Picasso.with(context)
                         .load(avatarUrl)
                         .fit()
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(25))
                         .placeholder(R.drawable.avatar_default)
                         .into(avatar);
             }
@@ -445,7 +445,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter {
                 Picasso.with(context)
                         .load(statusAvatarUrl)
                         .placeholder(R.drawable.avatar_default)
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(25))
                         .into(statusAvatar);
             }
 
@@ -456,7 +456,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter {
                         .load(notificationAvatarUrl)
                         .placeholder(R.drawable.avatar_default)
                         .fit()
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(25))
                         .into(notificationAvatar);
             }
         }

app/src/main/java/com/keylesspalace/tusky/adapter/StatusBaseViewHolder.java

@@ -120,7 +120,7 @@ abstract class StatusBaseViewHolder extends RecyclerView.ViewHolder {
             Picasso.with(avatar.getContext())
                     .load(url)
                     .placeholder(R.drawable.avatar_default)
-                    .transform(new RoundedTransformation(7, 0))
+                    .transform(new RoundedTransformation(25))
                     .into(avatar);
         }
     }

app/src/main/java/com/keylesspalace/tusky/adapter/StatusViewHolder.java

@@ -63,7 +63,7 @@ public class StatusViewHolder extends StatusBaseViewHolder {
             Picasso.with(context)
                     .load(rebloggedUrl)
                     .fit()
-                    .transform(new RoundedTransformation(7, 0))
+                    .transform(new RoundedTransformation(25))
                     .into(avatarReblog);
         } else {
             avatarReblog.setVisibility(View.GONE);

app/src/main/java/com/keylesspalace/tusky/util/NotificationHelper.java

@@ -145,7 +145,7 @@ public class NotificationHelper {
             try {
                 accountAvatar = Picasso.with(context)
                         .load(body.getAccount().getAvatar())
-                        .transform(new RoundedTransformation(7, 0))
+                        .transform(new RoundedTransformation(20))
                         .get();
             } catch (IOException e) {
                 Log.d(TAG, "error loading account avatar", e);

app/src/main/java/com/keylesspalace/tusky/view/RoundedTransformation.java

@@ -26,25 +26,35 @@ import com.squareup.picasso.Transformation;
 
 public class RoundedTransformation implements Transformation {
 
-    private final int radius;
-    private final int margin;
+    private final float percent;
 
-    public RoundedTransformation(final int radius, final int margin) {
-        this.radius = radius;
-        this.margin = margin;
+    /** 100% would mean a perfectly round image **/
+    public RoundedTransformation(final float percent) {
+        this.percent = percent;
     }
 
     @Override
     public Bitmap transform(Bitmap source) {
-        final Paint paint = new Paint();
 
+        final int width = source.getWidth();
+        final int height = source.getHeight();
+        final int shorterSide;
+        if (width > height) {
+            shorterSide = height;
+        } else {
+            shorterSide = width;
+        }
+
+        final float radius = shorterSide / 2 * percent / 100;
+
+        final Paint paint = new Paint();
         paint.setAntiAlias(true);
         paint.setShader(new BitmapShader(source, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
 
-        Bitmap output = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
+        Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
         Canvas canvas = new Canvas(output);
 
-        canvas.drawRoundRect(new RectF(margin, margin, source.getWidth() - margin, source.getHeight() - margin), radius, radius, paint);
+        canvas.drawRoundRect(new RectF(0, 0, width, height), radius, radius, paint);
 
         if (source != output) {
             source.recycle();
@@ -55,6 +65,6 @@ public class RoundedTransformation implements Transformation {
 
     @Override
     public String key() {
-        return "rounded";
+        return "rounded "+percent+"%";
     }
 }