content: /*
   * Copyright (C) 2007 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;
  
  import android.annotation.NonNull;
  import android.annotation.UnsupportedAppUsage;
  
  /**
   * Shader used to draw a bitmap as a texture. The bitmap can be repeated or
   * mirrored by setting the tiling mode.
   */
  public class BitmapShader extends Shader {
      /**
       * Prevent garbage collection.
       * @hide
       */
      @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"})
      @UnsupportedAppUsage
      public Bitmap mBitmap;
  
      @UnsupportedAppUsage
      private int mTileX;
      @UnsupportedAppUsage
      private int mTileY;
  
      /**
       * Call this to create a new shader that will draw with a bitmap.
       *
       * @param bitmap The bitmap to use inside the shader
       * @param tileX The tiling mode for x to draw the bitmap in.
       * @param tileY The tiling mode for y to draw the bitmap in.
       */
      public BitmapShader(@NonNull Bitmap bitmap, @NonNull TileMode tileX, @NonNull TileMode tileY) {
          this(bitmap, tileX.nativeInt, tileY.nativeInt);
      }
  
      private BitmapShader(Bitmap bitmap, int tileX, int tileY) {
          if (bitmap == null) {
              throw new IllegalArgumentException("Bitmap must be non-null");
          }
          if (bitmap == mBitmap && tileX == mTileX && tileY == mTileY) {
              return;
          }
          mBitmap = bitmap;
          mTileX = tileX;
          mTileY = tileY;
      }
  
      @Override
      long createNativeInstance(long nativeMatrix) {
          return nativeCreate(nativeMatrix, mBitmap.getNativeInstance(), mTileX, mTileY);
      }
  
      private static native long nativeCreate(long nativeMatrix, long bitmapHandle,
              int shaderTileModeX, int shaderTileModeY);
  }
  