Merge "Add transfer mode support to ColorDrawable" into oc-dev

am: eedceb5721

Change-Id: If27a7e4154dabbeffd2b11ee2b788c9e30b3d9a7

api/test-current.txt

@@ -13997,6 +13997,7 @@ package android.graphics.drawable {
     method public void draw(android.graphics.Canvas);
     method public int getColor();
     method public int getOpacity();
+    method public android.graphics.Xfermode getXfermode();
     method public void setAlpha(int);
     method public void setColor(int);
     method public void setColorFilter(android.graphics.ColorFilter);

graphics/java/android/graphics/drawable/ColorDrawable.java

@@ -18,6 +18,8 @@ package android.graphics.drawable;
 
 import android.annotation.ColorInt;
 import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.TestApi;
 import android.content.pm.ActivityInfo.Config;
 import android.graphics.*;
 import android.graphics.PorterDuff.Mode;
@@ -213,6 +215,25 @@ public class ColorDrawable extends Drawable {
         return mColorState.mTint != null && mColorState.mTint.hasFocusStateSpecified();
     }
 
+    /**
+     * @hide
+     * @param mode new transfer mode
+     */
+    @Override
+    public void setXfermode(@Nullable Xfermode mode) {
+        mPaint.setXfermode(mode);
+        invalidateSelf();
+    }
+
+    /**
+     * @hide
+     * @return current transfer mode
+     */
+    @TestApi
+    public Xfermode getXfermode() {
+        return mPaint.getXfermode();
+    }
+
     @Override
     public int getOpacity() {
         if (mTintFilter != null || mPaint.getColorFilter() != null) {