content: /*
   * Copyright (C) 2018 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.text;
  
  import com.android.layoutlib.bridge.impl.DelegateManager;
  import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
  
  import android.graphics.Rect;
  import android.graphics.text.LineBreaker_Delegate.Builder;
  import android.graphics.text.LineBreaker_Delegate.Run;
  
  import libcore.util.NativeAllocationRegistry_Delegate;
  
  /**
   * Delegate that provides implementation for native methods in
   * {@link android.graphics.text.MeasuredText}
   * <p/>
   * Through the layoutlib_create tool, selected methods of StaticLayout have been replaced
   * by calls to methods of the same name in this delegate class.
   *
   */
  public class MeasuredText_Delegate {
  
      // ---- Builder delegate manager ----
      protected static final DelegateManager<MeasuredText_Delegate> sManager =
              new DelegateManager<>(MeasuredText_Delegate.class);
      private static long sFinalizer = -1;
  
      protected long mNativeBuilderPtr;
  
      @LayoutlibDelegate
      /*package*/ static float nGetWidth(long nativePtr, int start, int end) {
          // Ignore as it is not used for the layoutlib implementation
          return 0.0f;
      }
  
      @LayoutlibDelegate
      /*package*/ static long nGetReleaseFunc() {
          synchronized (MeasuredText_Delegate.class) {
              if (sFinalizer == -1) {
                  sFinalizer = NativeAllocationRegistry_Delegate.createFinalizer(
                          sManager::removeJavaReferenceFor);
              }
          }
          return sFinalizer;
      }
  
      @LayoutlibDelegate
      /*package*/ static int nGetMemoryUsage(long nativePtr) {
          // Ignore as it is not used for the layoutlib implementation
          return 0;
      }
  
      @LayoutlibDelegate
      /*package*/ static void nGetBounds(long nativePtr, char[] buf, int start, int end, Rect rect) {
          // Ignore as it is not used for the layoutlib implementation
      }
  
      @LayoutlibDelegate
      /*package*/ static float nGetCharWidthAt(long nativePtr, int offset) {
          // Ignore as it is not used for the layoutlib implementation
          return 0.0f;
      }
  
      public static void computeRuns(long measuredTextPtr, Builder staticLayoutBuilder) {
          MeasuredText_Delegate delegate = sManager.getDelegate(measuredTextPtr);
          if (delegate == null) {
              return;
          }
          MeasuredText_Builder_Delegate builder =
                  MeasuredText_Builder_Delegate.sBuilderManager.getDelegate(delegate.mNativeBuilderPtr);
          if (builder == null) {
              return;
          }
          for (Run run: builder.mRuns) {
              run.addTo(staticLayoutBuilder);
          }
      }
  }