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) 
public class org.apache.fop.area.RegionViewport extends org.apache.fop.area.Area implements org.apache.fop.area.Viewport
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.area.RegionViewport
  super_class: org.apache.fop.area.Area
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 505781815165102572

  private org.apache.fop.area.RegionReference regionReference;
    descriptor: Lorg/apache/fop/area/RegionReference;
    flags: (0x0002) ACC_PRIVATE

  private java.awt.geom.Rectangle2D viewArea;
    descriptor: Ljava/awt/geom/Rectangle2D;
    flags: (0x0002) ACC_PRIVATE

  private boolean clip;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.awt.geom.Rectangle2D);
    descriptor: (Ljava/awt/geom/Rectangle2D;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // java.awt.geom.Rectangle2D viewArea
         0: .line 49
            aload 0 /* this */
            invokespecial org.apache.fop.area.Area.<init>:()V
         1: .line 50
            aload 0 /* this */
            aload 1 /* viewArea */
            putfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
         2: .line 51
            aload 0 /* this */
            getstatic org.apache.fop.area.Trait.IS_VIEWPORT_AREA:Ljava/lang/Integer;
            getstatic java.lang.Boolean.TRUE:Ljava/lang/Boolean;
            invokevirtual org.apache.fop.area.RegionViewport.addTrait:(Ljava/lang/Integer;Ljava/lang/Object;)V
         3: .line 52
            return
        end local 1 // java.awt.geom.Rectangle2D viewArea
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/apache/fop/area/RegionViewport;
            0    4     1  viewArea  Ljava/awt/geom/Rectangle2D;
    MethodParameters:
          Name  Flags
      viewArea  

  public void setRegionReference(org.apache.fop.area.RegionReference);
    descriptor: (Lorg/apache/fop/area/RegionReference;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // org.apache.fop.area.RegionReference reg
         0: .line 60
            aload 0 /* this */
            aload 1 /* reg */
            putfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
         1: .line 61
            return
        end local 1 // org.apache.fop.area.RegionReference reg
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/fop/area/RegionViewport;
            0    2     1   reg  Lorg/apache/fop/area/RegionReference;
    MethodParameters:
      Name  Flags
      reg   

  public org.apache.fop.area.RegionReference getRegionReference();
    descriptor: ()Lorg/apache/fop/area/RegionReference;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.RegionViewport this
         0: .line 69
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
            areturn
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/RegionViewport;

  public void setClip(boolean);
    descriptor: (Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // boolean c
         0: .line 78
            aload 0 /* this */
            iload 1 /* c */
            putfield org.apache.fop.area.RegionViewport.clip:Z
         1: .line 79
            return
        end local 1 // boolean c
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/fop/area/RegionViewport;
            0    2     1     c  Z
    MethodParameters:
      Name  Flags
      c     

  public boolean hasClip();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.RegionViewport this
         0: .line 83
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.clip:Z
            ireturn
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/RegionViewport;

  public java.awt.Rectangle getClipRectangle();
    descriptor: ()Ljava/awt/Rectangle;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // org.apache.fop.area.RegionViewport this
         0: .line 88
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.clip:Z
            ifeq 2
         1: .line 89
            new java.awt.Rectangle
            dup
            aload 0 /* this */
            invokevirtual org.apache.fop.area.RegionViewport.getIPD:()I
            aload 0 /* this */
            invokevirtual org.apache.fop.area.RegionViewport.getBPD:()I
            invokespecial java.awt.Rectangle.<init>:(II)V
            areturn
         2: .line 91
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/fop/area/RegionViewport;

  public java.awt.geom.Rectangle2D getViewArea();
    descriptor: ()Ljava/awt/geom/Rectangle2D;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.RegionViewport this
         0: .line 101
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            areturn
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/RegionViewport;

  private void writeObject(java.io.ObjectOutputStream);
    descriptor: (Ljava/io/ObjectOutputStream;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // java.io.ObjectOutputStream out
         0: .line 106
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            invokevirtual java.awt.geom.Rectangle2D.getX:()D
            d2f
            invokevirtual java.io.ObjectOutputStream.writeFloat:(F)V
         1: .line 107
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            invokevirtual java.awt.geom.Rectangle2D.getY:()D
            d2f
            invokevirtual java.io.ObjectOutputStream.writeFloat:(F)V
         2: .line 108
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            invokevirtual java.awt.geom.Rectangle2D.getWidth:()D
            d2f
            invokevirtual java.io.ObjectOutputStream.writeFloat:(F)V
         3: .line 109
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            invokevirtual java.awt.geom.Rectangle2D.getHeight:()D
            d2f
            invokevirtual java.io.ObjectOutputStream.writeFloat:(F)V
         4: .line 110
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.clip:Z
            invokevirtual java.io.ObjectOutputStream.writeBoolean:(Z)V
         5: .line 111
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.traits:Ljava/util/TreeMap;
            invokevirtual java.io.ObjectOutputStream.writeObject:(Ljava/lang/Object;)V
         6: .line 112
            aload 1 /* out */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
            invokevirtual java.io.ObjectOutputStream.writeObject:(Ljava/lang/Object;)V
         7: .line 113
            return
        end local 1 // java.io.ObjectOutputStream out
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/apache/fop/area/RegionViewport;
            0    8     1   out  Ljava/io/ObjectOutputStream;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      out   

  private void readObject(java.io.ObjectInputStream);
    descriptor: (Ljava/io/ObjectInputStream;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // java.io.ObjectInputStream in
         0: .line 117
            aload 0 /* this */
            new java.awt.geom.Rectangle2D$Float
            dup
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readFloat:()F
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readFloat:()F
         1: .line 118
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readFloat:()F
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readFloat:()F
            invokespecial java.awt.geom.Rectangle2D$Float.<init>:(FFFF)V
         2: .line 117
            putfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
         3: .line 119
            aload 0 /* this */
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readBoolean:()Z
            putfield org.apache.fop.area.RegionViewport.clip:Z
         4: .line 120
            aload 0 /* this */
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readObject:()Ljava/lang/Object;
            checkcast java.util.TreeMap
            putfield org.apache.fop.area.RegionViewport.traits:Ljava/util/TreeMap;
         5: .line 121
            aload 0 /* this */
            aload 1 /* in */
            invokevirtual java.io.ObjectInputStream.readObject:()Ljava/lang/Object;
            checkcast org.apache.fop.area.RegionReference
            invokevirtual org.apache.fop.area.RegionViewport.setRegionReference:(Lorg/apache/fop/area/RegionReference;)V
         6: .line 122
            return
        end local 1 // java.io.ObjectInputStream in
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lorg/apache/fop/area/RegionViewport;
            0    7     1    in  Ljava/io/ObjectInputStream;
    Exceptions:
      throws java.io.IOException, java.lang.ClassNotFoundException
    MethodParameters:
      Name  Flags
      in    

  public java.lang.Object clone();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // org.apache.fop.area.RegionViewport this
         0: .line 126
            aload 0 /* this */
            invokespecial org.apache.fop.area.Area.clone:()Ljava/lang/Object;
            checkcast org.apache.fop.area.RegionViewport
            astore 1 /* rv */
        start local 1 // org.apache.fop.area.RegionViewport rv
         1: .line 127
            aload 1 /* rv */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
            invokevirtual org.apache.fop.area.RegionReference.clone:()Ljava/lang/Object;
            checkcast org.apache.fop.area.RegionReference
            putfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
         2: .line 128
            aload 1 /* rv */
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
            invokevirtual java.awt.geom.Rectangle2D.clone:()Ljava/lang/Object;
            checkcast java.awt.geom.Rectangle2D
            putfield org.apache.fop.area.RegionViewport.viewArea:Ljava/awt/geom/Rectangle2D;
         3: .line 129
            aload 1 /* rv */
            areturn
        end local 1 // org.apache.fop.area.RegionViewport rv
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/apache/fop/area/RegionViewport;
            1    4     1    rv  Lorg/apache/fop/area/RegionViewport;
    Exceptions:
      throws java.lang.CloneNotSupportedException

  public void setWritingModeTraits(org.apache.fop.traits.WritingModeTraitsGetter);
    descriptor: (Lorg/apache/fop/traits/WritingModeTraitsGetter;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.area.RegionViewport this
        start local 1 // org.apache.fop.traits.WritingModeTraitsGetter wmtg
         0: .line 138
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
            ifnull 2
         1: .line 139
            aload 0 /* this */
            getfield org.apache.fop.area.RegionViewport.regionReference:Lorg/apache/fop/area/RegionReference;
            aload 1 /* wmtg */
            invokevirtual org.apache.fop.area.RegionReference.setWritingModeTraits:(Lorg/apache/fop/traits/WritingModeTraitsGetter;)V
         2: .line 141
      StackMap locals:
      StackMap stack:
            return
        end local 1 // org.apache.fop.traits.WritingModeTraitsGetter wmtg
        end local 0 // org.apache.fop.area.RegionViewport this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/fop/area/RegionViewport;
            0    3     1  wmtg  Lorg/apache/fop/traits/WritingModeTraitsGetter;
    MethodParameters:
      Name  Flags
      wmtg  
}
SourceFile: "RegionViewport.java"
InnerClasses:
  public Float = java.awt.geom.Rectangle2D$Float of java.awt.geom.Rectangle2D