1 files changed, 63 insertions, 0 deletions
diff --git a/mobile/android/services/src/main/java/org/mozilla/gecko/fxa/activities/PicassoPreferenceIconTarget.java b/mobile/android/services/src/main/java/org/mozilla/gecko/fxa/activities/PicassoPreferenceIconTarget.java
new file mode 100644
index 000000000..f71d3ed1c
--- /dev/null
+++ b/mobile/android/services/src/main/java/org/mozilla/gecko/fxa/activities/PicassoPreferenceIconTarget.java
@@ -0,0 +1,63 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.fxa.activities;
+
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.preference.Preference;
+import android.support.v4.graphics.drawable.RoundedBitmapDrawable;
+import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;
+import com.squareup.picasso.Picasso;
+import com.squareup.picasso.Target;
+import org.mozilla.gecko.AppConstants;
+
+/**
+ * A Picasso Target that updates a preference icon.
+ *
+ * Nota bene: Android grew support for updating preference icons programatically
+ * only in API 11.  This class silently ignores requests before API 11.
+ */
+public class PicassoPreferenceIconTarget implements Target {
+    private final Preference preference;
+    private final Resources resources;
+    private final float cornerRadius;
+
+    public PicassoPreferenceIconTarget(Resources resources, Preference preference) {
+        this(resources, preference, 0);
+    }
+
+    public PicassoPreferenceIconTarget(Resources resources, Preference preference, float cornerRadius) {
+        this.resources = resources;
+        this.preference = preference;
+        this.cornerRadius = cornerRadius;
+    }
+
+    @Override
+    public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
+        final Drawable drawable;
+        if (cornerRadius > 0) {
+            final RoundedBitmapDrawable roundedBitmapDrawable;
+            roundedBitmapDrawable = RoundedBitmapDrawableFactory.create(resources, bitmap);
+            roundedBitmapDrawable.setCornerRadius(cornerRadius);
+            roundedBitmapDrawable.setAntiAlias(true);
+            drawable = roundedBitmapDrawable;
+        } else {
+            drawable = new BitmapDrawable(resources, bitmap);
+        }
+        preference.setIcon(drawable);
+    }
+
+    @Override
+    public void onBitmapFailed(Drawable errorDrawable) {
+        preference.setIcon(errorDrawable);
+    }
+
+    @Override
+    public void onPrepareLoad(Drawable placeHolderDrawable) {
+        preference.setIcon(placeHolderDrawable);
+    }
+}