content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.weex.dom;
  
  import android.graphics.Paint;
  import android.text.style.LineHeightSpan;
  
  import org.apache.weex.WXEnvironment;
  import org.apache.weex.utils.WXLogUtils;
  
  public class WXLineHeightSpan implements LineHeightSpan{
  
    private int lineHeight;
    public WXLineHeightSpan(int lineHeight){
      this.lineHeight=lineHeight;
    }
  
    @Override
    public void chooseHeight(CharSequence text, int start, int end, int spanstartv, int v, Paint.FontMetricsInt fm) {
      if(WXEnvironment.isApkDebugable()) {
        WXLogUtils.d("LineHeight", text + " ; start " + start + "; end " + end + "; spanstartv "
                + spanstartv + "; v " + v + "; fm " + fm);
      }
      int halfLeading=(lineHeight-(fm.descent-fm.ascent))/2;
      fm.top-=halfLeading;
      fm.bottom+=halfLeading;
      fm.ascent-=halfLeading;
      fm.descent+=halfLeading;
    }
  }
  