content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.graphics.drawable;
  
  import android.graphics.Canvas;
  import android.graphics.ColorFilter;
  import android.graphics.drawable.Drawable;
  import android.graphics.Picture;
  import android.graphics.PixelFormat;
  import android.graphics.Rect;
  
  /**
   * Drawable subclass that wraps a Picture, allowing the picture to be used
   * wherever a Drawable is supported.
   */
  public class PictureDrawable extends Drawable {
  
      private Picture mPicture;
  
      /**
       * Construct a new drawable referencing the specified picture. The picture
       * may be null.
       *
       * @param picture The picture to associate with the drawable. May be null.
       */
      public PictureDrawable(Picture picture) {
          mPicture = picture;
      }
  
      /**
       * Return the picture associated with the drawable. May be null.
       *
       * @return the picture associated with the drawable, or null.
       */
      public Picture getPicture() {
          return mPicture;
      }
  
      /**
       * Associate a picture with this drawable. The picture may be null.
       *
       * @param picture The picture to associate with the drawable. May be null.
       */
      public void setPicture(Picture picture) {
          mPicture = picture;
      }
  
      @Override
      public void draw(Canvas canvas) {
          if (mPicture != null) {
              Rect bounds = getBounds();
              canvas.save();
              canvas.clipRect(bounds);
              canvas.translate(bounds.left, bounds.top);
              canvas.drawPicture(mPicture);
              canvas.restore();
          }
      }
  
      @Override
      public int getIntrinsicWidth() {
          return mPicture != null ? mPicture.getWidth() : -1;
      }
  
      @Override
      public int getIntrinsicHeight() {
          return mPicture != null ? mPicture.getHeight() : -1;
      }
  
      @Override
      public int getOpacity() {
          // not sure, so be safe
          return PixelFormat.TRANSLUCENT;
      }
  
      @Override
      public void setColorFilter(ColorFilter colorFilter) {}
  
      @Override
      public void setAlpha(int alpha) {}
  }
  
  