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.pdf.PDFShading extends org.apache.fop.pdf.PDFObject
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.pdf.PDFShading
  super_class: org.apache.fop.pdf.PDFObject
{
  protected java.lang.String shadingName;
    descriptor: Ljava/lang/String;
    flags: (0x0004) ACC_PROTECTED

  private final org.apache.fop.render.gradient.Shading shading;
    descriptor: Lorg/apache/fop/render/gradient/Shading;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final org.apache.fop.pdf.PDFFunction pdfFunction;
    descriptor: Lorg/apache/fop/pdf/PDFFunction;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(int, org.apache.fop.pdf.PDFDeviceColorSpace, java.util.List, org.apache.fop.pdf.PDFFunction);
    descriptor: (ILorg/apache/fop/pdf/PDFDeviceColorSpace;Ljava/util/List;Lorg/apache/fop/pdf/PDFFunction;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=5, args_size=5
        start local 0 // org.apache.fop.pdf.PDFShading this
        start local 1 // int shadingType
        start local 2 // org.apache.fop.pdf.PDFDeviceColorSpace colorSpace
        start local 3 // java.util.List coords
        start local 4 // org.apache.fop.pdf.PDFFunction pdfFunction
         0: .line 60
            aload 0 /* this */
            invokespecial org.apache.fop.pdf.PDFObject.<init>:()V
         1: .line 62
            aload 0 /* this */
            new org.apache.fop.render.gradient.Shading
            dup
            iload 1 /* shadingType */
            aload 2 /* colorSpace */
            aload 3 /* coords */
            aload 4 /* pdfFunction */
            invokevirtual org.apache.fop.pdf.PDFFunction.getFunction:()Lorg/apache/fop/render/gradient/Function;
            invokespecial org.apache.fop.render.gradient.Shading.<init>:(ILorg/apache/fop/pdf/PDFDeviceColorSpace;Ljava/util/List;Lorg/apache/fop/render/gradient/Function;)V
            putfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
         2: .line 63
            aload 0 /* this */
            aload 4 /* pdfFunction */
            putfield org.apache.fop.pdf.PDFShading.pdfFunction:Lorg/apache/fop/pdf/PDFFunction;
         3: .line 64
            return
        end local 4 // org.apache.fop.pdf.PDFFunction pdfFunction
        end local 3 // java.util.List coords
        end local 2 // org.apache.fop.pdf.PDFDeviceColorSpace colorSpace
        end local 1 // int shadingType
        end local 0 // org.apache.fop.pdf.PDFShading this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    4     0         this  Lorg/apache/fop/pdf/PDFShading;
            0    4     1  shadingType  I
            0    4     2   colorSpace  Lorg/apache/fop/pdf/PDFDeviceColorSpace;
            0    4     3       coords  Ljava/util/List;
            0    4     4  pdfFunction  Lorg/apache/fop/pdf/PDFFunction;
    MethodParameters:
             Name  Flags
      shadingType  
      colorSpace   
      coords       
      pdfFunction  

  public java.lang.String getName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.PDFShading this
         0: .line 72
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shadingName:Ljava/lang/String;
            areturn
        end local 0 // org.apache.fop.pdf.PDFShading this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/PDFShading;

  public void setName(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.pdf.PDFShading this
        start local 1 // java.lang.String name
         0: .line 81
            aload 1 /* name */
            ldc " "
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            iflt 4
         1: .line 82
            new java.lang.IllegalArgumentException
            dup
         2: .line 83
            ldc "Shading name must not contain any spaces"
         3: .line 82
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 85
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* name */
            putfield org.apache.fop.pdf.PDFShading.shadingName:Ljava/lang/String;
         5: .line 86
            return
        end local 1 // java.lang.String name
        end local 0 // org.apache.fop.pdf.PDFShading this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/apache/fop/pdf/PDFShading;
            0    6     1  name  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      name  

  public java.lang.String toPDFString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=1
        start local 0 // org.apache.fop.pdf.PDFShading this
         0: .line 100
            new org.apache.fop.pdf.PDFShading$1
            dup
            aload 0 /* this */
            invokespecial org.apache.fop.pdf.PDFShading$1.<init>:(Lorg/apache/fop/pdf/PDFShading;)V
            astore 1 /* functionRenderer */
        start local 1 // org.apache.fop.render.gradient.Shading$FunctionRenderer functionRenderer
         1: .line 106
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            astore 2 /* out */
        start local 2 // java.lang.StringBuilder out
         2: .line 107
            new org.apache.fop.pdf.PDFShading$2
            dup
            aload 0 /* this */
            invokespecial org.apache.fop.pdf.PDFShading$2.<init>:(Lorg/apache/fop/pdf/PDFShading;)V
            astore 3 /* doubleFormatter */
        start local 3 // org.apache.fop.render.gradient.GradientMaker$DoubleFormatter doubleFormatter
         3: .line 113
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            aload 2 /* out */
            aload 3 /* doubleFormatter */
            aload 1 /* functionRenderer */
            invokevirtual org.apache.fop.render.gradient.Shading.output:(Ljava/lang/StringBuilder;Lorg/apache/fop/render/gradient/GradientMaker$DoubleFormatter;Lorg/apache/fop/render/gradient/Shading$FunctionRenderer;)V
         4: .line 114
            aload 2 /* out */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 3 // org.apache.fop.render.gradient.GradientMaker$DoubleFormatter doubleFormatter
        end local 2 // java.lang.StringBuilder out
        end local 1 // org.apache.fop.render.gradient.Shading$FunctionRenderer functionRenderer
        end local 0 // org.apache.fop.pdf.PDFShading this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    5     0              this  Lorg/apache/fop/pdf/PDFShading;
            1    5     1  functionRenderer  Lorg/apache/fop/render/gradient/Shading$FunctionRenderer;
            2    5     2               out  Ljava/lang/StringBuilder;
            3    5     3   doubleFormatter  Lorg/apache/fop/render/gradient/GradientMaker$DoubleFormatter;

  protected boolean contentEquals(org.apache.fop.pdf.PDFObject);
    descriptor: (Lorg/apache/fop/pdf/PDFObject;)Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.apache.fop.pdf.PDFShading this
        start local 1 // org.apache.fop.pdf.PDFObject obj
         0: .line 119
            aload 1 /* obj */
            ifnonnull 2
         1: .line 120
            iconst_0
            ireturn
         2: .line 122
      StackMap locals:
      StackMap stack:
            aload 1 /* obj */
            aload 0 /* this */
            if_acmpne 4
         3: .line 123
            iconst_1
            ireturn
         4: .line 125
      StackMap locals:
      StackMap stack:
            aload 1 /* obj */
            instanceof org.apache.fop.pdf.PDFShading
            ifne 6
         5: .line 126
            iconst_0
            ireturn
         6: .line 128
      StackMap locals:
      StackMap stack:
            aload 1 /* obj */
            checkcast org.apache.fop.pdf.PDFShading
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            astore 2 /* other */
        start local 2 // org.apache.fop.render.gradient.Shading other
         7: .line 129
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getShadingType:()I
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getShadingType:()I
            if_icmpeq 9
         8: .line 130
            iconst_0
            ireturn
         9: .line 132
      StackMap locals: org.apache.fop.render.gradient.Shading
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.isAntiAlias:()Z
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.isAntiAlias:()Z
            if_icmpeq 11
        10: .line 133
            iconst_0
            ireturn
        11: .line 135
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerCoordinate:()I
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerCoordinate:()I
            if_icmpeq 13
        12: .line 136
            iconst_0
            ireturn
        13: .line 138
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerFlag:()I
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerFlag:()I
            if_icmpeq 15
        14: .line 139
            iconst_0
            ireturn
        15: .line 141
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerComponent:()I
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getBitsPerComponent:()I
            if_icmpeq 17
        16: .line 142
            iconst_0
            ireturn
        17: .line 144
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getVerticesPerRow:()I
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getVerticesPerRow:()I
            if_icmpeq 19
        18: .line 145
            iconst_0
            ireturn
        19: .line 147
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getColorSpace:()Lorg/apache/fop/pdf/PDFDeviceColorSpace;
            ifnull 22
        20: .line 148
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getColorSpace:()Lorg/apache/fop/pdf/PDFDeviceColorSpace;
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getColorSpace:()Lorg/apache/fop/pdf/PDFDeviceColorSpace;
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifne 24
        21: .line 149
            iconst_0
            ireturn
        22: .line 151
      StackMap locals:
      StackMap stack:
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getColorSpace:()Lorg/apache/fop/pdf/PDFDeviceColorSpace;
            ifnull 24
        23: .line 152
            iconst_0
            ireturn
        24: .line 154
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getCoords:()Ljava/util/List;
            ifnull 27
        25: .line 155
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getCoords:()Ljava/util/List;
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getCoords:()Ljava/util/List;
            invokeinterface java.util.List.equals:(Ljava/lang/Object;)Z
            ifne 29
        26: .line 156
            iconst_0
            ireturn
        27: .line 158
      StackMap locals:
      StackMap stack:
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getCoords:()Ljava/util/List;
            ifnull 29
        28: .line 159
            iconst_0
            ireturn
        29: .line 161
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getExtend:()Ljava/util/List;
            ifnull 32
        30: .line 162
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getExtend:()Ljava/util/List;
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getExtend:()Ljava/util/List;
            invokeinterface java.util.List.equals:(Ljava/lang/Object;)Z
            ifne 34
        31: .line 163
            iconst_0
            ireturn
        32: .line 165
      StackMap locals:
      StackMap stack:
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getExtend:()Ljava/util/List;
            ifnull 34
        33: .line 166
            iconst_0
            ireturn
        34: .line 168
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getFunction:()Lorg/apache/fop/render/gradient/Function;
            ifnull 37
        35: .line 169
            aload 0 /* this */
            getfield org.apache.fop.pdf.PDFShading.shading:Lorg/apache/fop/render/gradient/Shading;
            invokevirtual org.apache.fop.render.gradient.Shading.getFunction:()Lorg/apache/fop/render/gradient/Function;
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getFunction:()Lorg/apache/fop/render/gradient/Function;
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifne 39
        36: .line 170
            iconst_0
            ireturn
        37: .line 172
      StackMap locals:
      StackMap stack:
            aload 2 /* other */
            invokevirtual org.apache.fop.render.gradient.Shading.getFunction:()Lorg/apache/fop/render/gradient/Function;
            ifnull 39
        38: .line 173
            iconst_0
            ireturn
        39: .line 175
      StackMap locals:
      StackMap stack:
            iconst_1
            ireturn
        end local 2 // org.apache.fop.render.gradient.Shading other
        end local 1 // org.apache.fop.pdf.PDFObject obj
        end local 0 // org.apache.fop.pdf.PDFShading this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   40     0   this  Lorg/apache/fop/pdf/PDFShading;
            0   40     1    obj  Lorg/apache/fop/pdf/PDFObject;
            7   40     2  other  Lorg/apache/fop/render/gradient/Shading;
    MethodParameters:
      Name  Flags
      obj   
}
SourceFile: "PDFShading.java"
NestMembers:
  org.apache.fop.pdf.PDFShading$1  org.apache.fop.pdf.PDFShading$2
InnerClasses:
  org.apache.fop.pdf.PDFShading$1
  org.apache.fop.pdf.PDFShading$2
  public abstract DoubleFormatter = org.apache.fop.render.gradient.GradientMaker$DoubleFormatter of org.apache.fop.render.gradient.GradientMaker
  public abstract FunctionRenderer = org.apache.fop.render.gradient.Shading$FunctionRenderer of org.apache.fop.render.gradient.Shading