http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
class org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker extends org.apache.fop.area.AreaTreeParser$Handler$AbstractMaker
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker
  super_class: org.apache.fop.area.AreaTreeParser$Handler$AbstractMaker
{
  final org.apache.fop.area.AreaTreeParser$Handler this$1;
    descriptor: Lorg/apache/fop/area/AreaTreeParser$Handler;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(org.apache.fop.area.AreaTreeParser$Handler);
    descriptor: (Lorg/apache/fop/area/AreaTreeParser$Handler;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
         0: .line 466
            aload 0 /* this */
            aload 1
            putfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 0 /* this */
            aload 1
            invokespecial org.apache.fop.area.AreaTreeParser$Handler$AbstractMaker.<init>:(Lorg/apache/fop/area/AreaTreeParser$Handler;)V
            return
        end local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeParser$Handler$RegionViewportMaker;
    MethodParameters:
        Name  Flags
      this$0  final

  public void startElement(org.xml.sax.Attributes);
    descriptor: (Lorg/xml/sax/Attributes;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
        start local 1 // org.xml.sax.Attributes attributes
         0: .line 469
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.getCurrentRegionViewport:()Lorg/apache/fop/area/RegionViewport;
            astore 2 /* rv */
        start local 2 // org.apache.fop.area.RegionViewport rv
         1: .line 470
            aload 2 /* rv */
            ifnull 3
         2: .line 471
            new java.lang.IllegalStateException
            dup
            ldc "Current RegionViewport must be null"
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         3: .line 473
      StackMap locals: org.apache.fop.area.RegionViewport
      StackMap stack:
            aload 1 /* attributes */
            ldc "rect"
            invokestatic org.apache.fop.util.XMLUtil.getAttributeAsRectangle2D:(Lorg/xml/sax/Attributes;Ljava/lang/String;)Ljava/awt/geom/Rectangle2D;
            astore 3 /* viewArea */
        start local 3 // java.awt.geom.Rectangle2D viewArea
         4: .line 474
            new org.apache.fop.area.RegionViewport
            dup
            aload 3 /* viewArea */
            invokespecial org.apache.fop.area.RegionViewport.<init>:(Ljava/awt/geom/Rectangle2D;)V
            astore 2 /* rv */
         5: .line 475
            aload 1 /* attributes */
            aload 2 /* rv */
            invokestatic org.apache.fop.area.AreaTreeParser$Handler.transferForeignObjects:(Lorg/xml/sax/Attributes;Lorg/apache/fop/area/AreaTreeObject;)V
         6: .line 476
            aload 2 /* rv */
            aload 1 /* attributes */
            ldc "clipped"
            iconst_0
            invokestatic org.apache.fop.util.XMLUtil.getAttributeAsBoolean:(Lorg/xml/sax/Attributes;Ljava/lang/String;Z)Z
            invokevirtual org.apache.fop.area.RegionViewport.setClip:(Z)V
         7: .line 477
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 1 /* attributes */
            aload 2 /* rv */
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.setAreaAttributes:(Lorg/xml/sax/Attributes;Lorg/apache/fop/area/Area;)V
         8: .line 478
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 1 /* attributes */
            aload 2 /* rv */
            getstatic org.apache.fop.area.AreaTreeParser$Handler.SUBSET_COMMON:[Ljava/lang/Object;
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.setTraits:(Lorg/xml/sax/Attributes;Lorg/apache/fop/area/Area;[Ljava/lang/Object;)V
         9: .line 479
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 1 /* attributes */
            aload 2 /* rv */
            getstatic org.apache.fop.area.AreaTreeParser$Handler.SUBSET_BOX:[Ljava/lang/Object;
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.setTraits:(Lorg/xml/sax/Attributes;Lorg/apache/fop/area/Area;[Ljava/lang/Object;)V
        10: .line 480
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 1 /* attributes */
            aload 2 /* rv */
            getstatic org.apache.fop.area.AreaTreeParser$Handler.SUBSET_COLOR:[Ljava/lang/Object;
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.setTraits:(Lorg/xml/sax/Attributes;Lorg/apache/fop/area/Area;[Ljava/lang/Object;)V
        11: .line 481
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            getfield org.apache.fop.area.AreaTreeParser$Handler.areaStack:Ljava/util/Stack;
            aload 2 /* rv */
            invokevirtual java.util.Stack.push:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
        12: .line 482
            return
        end local 3 // java.awt.geom.Rectangle2D viewArea
        end local 2 // org.apache.fop.area.RegionViewport rv
        end local 1 // org.xml.sax.Attributes attributes
        end local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   13     0        this  Lorg/apache/fop/area/AreaTreeParser$Handler$RegionViewportMaker;
            0   13     1  attributes  Lorg/xml/sax/Attributes;
            1   13     2          rv  Lorg/apache/fop/area/RegionViewport;
            4   13     3    viewArea  Ljava/awt/geom/Rectangle2D;
    MethodParameters:
            Name  Flags
      attributes  

  public void endElement();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
         0: .line 485
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker.this$1:Lorg/apache/fop/area/AreaTreeParser$Handler;
            getfield org.apache.fop.area.AreaTreeParser$Handler.areaStack:Ljava/util/Stack;
            invokevirtual java.util.Stack.pop:()Ljava/lang/Object;
            ldc Lorg/apache/fop/area/RegionViewport;
            invokevirtual org.apache.fop.area.AreaTreeParser$Handler.assertObjectOfClass:(Ljava/lang/Object;Ljava/lang/Class;)V
         1: .line 486
            return
        end local 0 // org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/fop/area/AreaTreeParser$Handler$RegionViewportMaker;
}
SourceFile: "AreaTreeParser.java"
NestHost: org.apache.fop.area.AreaTreeParser
InnerClasses:
  private Handler = org.apache.fop.area.AreaTreeParser$Handler of org.apache.fop.area.AreaTreeParser
  private abstract AbstractMaker = org.apache.fop.area.AreaTreeParser$Handler$AbstractMaker of org.apache.fop.area.AreaTreeParser$Handler
  private RegionViewportMaker = org.apache.fop.area.AreaTreeParser$Handler$RegionViewportMaker of org.apache.fop.area.AreaTreeParser$Handler