Package org.apache.pdfbox.pdmodel

Class PDAbstractContentStream

java.lang.Object
org.apache.pdfbox.pdmodel.PDAbstractContentStream
All Implemented Interfaces:
Closeable, AutoCloseable
Direct Known Subclasses:
PDAppearanceContentStream, PDFormContentStream, PDPageContentStream, PDPatternContentStream
abstract class PDAbstractContentStream extends Object implements Closeable
Provides the ability to write to a content stream.

  • Field Details

    • LOG

      private static final org.apache.commons.logging.Log LOG

    • document

      protected final PDDocument document

    • outputStream

      protected final OutputStream outputStream

    • resources

      protected final PDResources resources

    • inTextMode

      protected boolean inTextMode

    • fontStack

      protected final Deque<PDFont> fontStack

    • nonStrokingColorSpaceStack

      protected final Deque<PDColorSpace> nonStrokingColorSpaceStack

    • strokingColorSpaceStack

      protected final Deque<PDColorSpace> strokingColorSpaceStack

    • formatDecimal

      private final NumberFormat formatDecimal

    • formatBuffer

      private final byte[] formatBuffer

    • gsubWorkers

      private final Map<PDType0Font,GsubWorker> gsubWorkers

    • gsubWorkerFactory

      private final GsubWorkerFactory gsubWorkerFactory

  • Constructor Details

    • PDAbstractContentStream

      PDAbstractContentStream(PDDocument document, OutputStream outputStream, PDResources resources)
      Create a new appearance stream.
      Parameters:
      document - may be null
      outputStream - The appearances output stream to write to.
      resources - The resources to use

  • Method Details

    • setMaximumFractionDigits

      protected void setMaximumFractionDigits(int fractionDigitsNumber)
      Sets the maximum number of digits allowed for fractional numbers.
      Parameters:
      fractionDigitsNumber - the maximum number of digits allowed for fractional numbers
      See Also:

    • beginText

      public void beginText() throws IOException
      Begin some text operations.
      Throws:
      IOException - If there is an error writing to the stream or if you attempt to nest beginText calls.
      IllegalStateException - If the method was not allowed to be called at this time.

    • endText

      public void endText() throws IOException
      End some text operations.
      Throws:
      IOException - If there is an error writing to the stream or if you attempt to nest endText calls.
      IllegalStateException - If the method was not allowed to be called at this time.

    • setFont

      public void setFont(PDFont font, float fontSize) throws IOException
      Set the font and font size to draw text with.
      Parameters:
      font - The font to use.
      fontSize - The font size to draw the text.
      Throws:
      IOException - If there is an error writing the font information.

    • showTextWithPositioning

      public void showTextWithPositioning(Object[] textWithPositioningArray) throws IOException
      Shows the given text at the location specified by the current text matrix with the given interspersed positioning. This allows the user to efficiently position each glyph or sequence of glyphs.
      Parameters:
      textWithPositioningArray - An array consisting of String and Float types. Each String is output to the page using the current text matrix. Using the default coordinate system, each interspersed number adjusts the current text matrix by translating to the left or down for horizontal and vertical text respectively. The number is expressed in thousands of a text space unit, and may be negative.
      Throws:
      IOException - if an io exception occurs.

    • showText

      public void showText(String text) throws IOException
      Shows the given text at the location specified by the current text matrix.
      Parameters:
      text - The Unicode text to show.
      Throws:
      IOException - If an io exception occurs.
      IllegalArgumentException - if a character isn't supported by the current font

    • showTextInternal

      protected void showTextInternal(String text) throws IOException
      Outputs a string using the correct encoding and subsetting as required.
      Parameters:
      text - The Unicode text to show.
      Throws:
      IOException - If an io exception occurs.

    • setLeading

      public void setLeading(float leading) throws IOException
      Sets the text leading.
      Parameters:
      leading - The leading in unscaled text units.
      Throws:
      IOException - If there is an error writing to the stream.

    • newLine

      public void newLine() throws IOException
      Move to the start of the next line of text. Requires the leading (see setLeading(float)) to have been set.
      Throws:
      IOException - If there is an error writing to the stream.

    • newLineAtOffset

      public void newLineAtOffset(float tx, float ty) throws IOException
      The Td operator. Move to the start of the next line, offset from the start of the current line by (tx, ty).
      Parameters:
      tx - The x translation.
      ty - The y translation.
      Throws:
      IOException - If there is an error writing to the stream.
      IllegalStateException - If the method was not allowed to be called at this time.

    • setTextMatrix

      public void setTextMatrix(Matrix matrix) throws IOException
      The Tm operator. Sets the text matrix to the given values. A current text matrix will be replaced with the new one.
      Parameters:
      matrix - the transformation matrix
      Throws:
      IOException - If there is an error writing to the stream.
      IllegalStateException - If the method was not allowed to be called at this time.

    • drawImage

      public void drawImage(PDImageXObject image, float x, float y) throws IOException
      Draw an image at the x,y coordinates, with the default size of the image.
      Parameters:
      image - The image to draw.
      x - The x-coordinate to draw the image.
      y - The y-coordinate to draw the image.
      Throws:
      IOException - If there is an error writing to the stream.

    • drawImage

      public void drawImage(PDImageXObject image, float x, float y, float width, float height) throws IOException
      Draw an image at the x,y coordinates, with the given size.
      Parameters:
      image - The image to draw.
      x - The x-coordinate to draw the image.
      y - The y-coordinate to draw the image.
      width - The width to draw the image.
      height - The height to draw the image.
      Throws:
      IOException - If there is an error writing to the stream.
      IllegalStateException - If the method was called within a text block.

    • drawImage

      public void drawImage(PDImageXObject image, Matrix matrix) throws IOException
      Draw an image at the origin with the given transformation matrix.
      Parameters:
      image - The image to draw.
      matrix - The transformation matrix to apply to the image.
      Throws:
      IOException - If there is an error writing to the stream.
      IllegalStateException - If the method was called within a text block.

    • drawImage

      public void drawImage(PDInlineImage inlineImage, float x, float y) throws IOException
      Draw an inline image at the x,y coordinates, with the default size of the image.
      Parameters:
      inlineImage - The inline image to draw.
      x - The x-coordinate to draw the inline image.
      y - The y-coordinate to draw the inline image.
      Throws:
      IOException - If there is an error writing to the stream.

    • drawImage

      public void drawImage(PDInlineImage inlineImage, float x, float y, float width, float height) throws IOException
      Draw an inline image at the x,y coordinates and a certain width and height.
      Parameters:
      inlineImage - The inline image to draw.
      x - The x-coordinate to draw the inline image.
      y - The y-coordinate to draw the inline image.
      width - The width of the inline image to draw.
      height - The height of the inline image to draw.
      Throws:
      IOException - If there is an error writing to the stream.
      IllegalStateException - If the method was called within a text block.

    • drawForm

      public void drawForm(PDFormXObject form) throws IOException
      Draws the given Form XObject at the current location.
      Parameters:
      form - Form XObject
      Throws:
      IOException - if the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • transform

      public void transform(Matrix matrix) throws IOException
      The cm operator. Concatenates the given matrix with the current transformation matrix (CTM), which maps user space coordinates used within a PDF content stream into output device coordinates. More details on coordinates can be found in the PDF 32000 specification, 8.3.2 Coordinate Spaces.
      Parameters:
      matrix - the transformation matrix
      Throws:
      IOException - If there is an error writing to the stream.

    • saveGraphicsState

      public void saveGraphicsState() throws IOException
      q operator. Saves the current graphics state.
      Throws:
      IOException - If an error occurs while writing to the stream.

    • restoreGraphicsState

      public void restoreGraphicsState() throws IOException
      Q operator. Restores the current graphics state.
      Throws:
      IOException - If an error occurs while writing to the stream.

    • getName

      protected COSName getName(PDColorSpace colorSpace)

    • setStrokingColor

      public void setStrokingColor(PDColor color) throws IOException
      Sets the stroking color and, if necessary, the stroking color space.
      Parameters:
      color - Color in a specific color space.
      Throws:
      IOException - If an IO error occurs while writing to the stream.

    • setStrokingColor

      public void setStrokingColor(Color color) throws IOException
      Set the stroking color using an AWT color. Conversion uses the default sRGB color space.
      Parameters:
      color - The color to set.
      Throws:
      IOException - If an IO error occurs while writing to the stream.

    • setStrokingColor

      public void setStrokingColor(float r, float g, float b) throws IOException
      Set the stroking color in the DeviceRGB color space. Range is 0..1.
      Parameters:
      r - The red value.
      g - The green value.
      b - The blue value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.
      IllegalArgumentException - If the parameters are invalid.

    • setStrokingColor

      public void setStrokingColor(float c, float m, float y, float k) throws IOException
      Set the stroking color in the DeviceCMYK color space. Range is 0..1
      Parameters:
      c - The cyan value.
      m - The magenta value.
      y - The yellow value.
      k - The black value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.
      IllegalArgumentException - If the parameters are invalid.

    • setStrokingColor

      public void setStrokingColor(float g) throws IOException
      Set the stroking color in the DeviceGray color space. Range is 0..1.
      Parameters:
      g - The gray value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.
      IllegalArgumentException - If the parameter is invalid.

    • setNonStrokingColor

      public void setNonStrokingColor(PDColor color) throws IOException
      Sets the non-stroking color and, if necessary, the non-stroking color space.
      Parameters:
      color - Color in a specific color space.
      Throws:
      IOException - If an IO error occurs while writing to the stream.

    • setNonStrokingColor

      public void setNonStrokingColor(Color color) throws IOException
      Set the non-stroking color using an AWT color. Conversion uses the default sRGB color space.
      Parameters:
      color - The color to set.
      Throws:
      IOException - If an IO error occurs while writing to the stream.

    • setNonStrokingColor

      public void setNonStrokingColor(float r, float g, float b) throws IOException
      Set the non-stroking color in the DeviceRGB color space. Range is 0..1.
      Parameters:
      r - The red value.
      g - The green value.
      b - The blue value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.
      IllegalArgumentException - If the parameters are invalid.

    • setNonStrokingColor

      public void setNonStrokingColor(float c, float m, float y, float k) throws IOException
      Set the non-stroking color in the DeviceCMYK color space. Range is 0..1.
      Parameters:
      c - The cyan value.
      m - The magenta value.
      y - The yellow value.
      k - The black value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.

    • setNonStrokingColor

      public void setNonStrokingColor(float g) throws IOException
      Set the non-stroking color in the DeviceGray color space. Range is 0..1.
      Parameters:
      g - The gray value.
      Throws:
      IOException - If an IO error occurs while writing to the stream.
      IllegalArgumentException - If the parameter is invalid.

    • addRect

      public void addRect(float x, float y, float width, float height) throws IOException
      Add a rectangle to the current path.
      Parameters:
      x - The lower left x coordinate.
      y - The lower left y coordinate.
      width - The width of the rectangle.
      height - The height of the rectangle.
      Throws:
      IOException - If the content stream could not be written.
      IllegalStateException - If the method was called within a text block.

    • curveTo

      public void curveTo(float x1, float y1, float x2, float y2, float x3, float y3) throws IOException
      Append a cubic Bézier curve to the current path. The curve extends from the current point to the point (x3, y3), using (x1, y1) and (x2, y2) as the Bézier control points.
      Parameters:
      x1 - x coordinate of the point 1
      y1 - y coordinate of the point 1
      x2 - x coordinate of the point 2
      y2 - y coordinate of the point 2
      x3 - x coordinate of the point 3
      y3 - y coordinate of the point 3
      Throws:
      IOException - If the content stream could not be written.
      IllegalStateException - If the method was called within a text block.

    • curveTo2

      public void curveTo2(float x2, float y2, float x3, float y3) throws IOException
      Append a cubic Bézier curve to the current path. The curve extends from the current point to the point (x3, y3), using the current point and (x2, y2) as the Bézier control points.
      Parameters:
      x2 - x coordinate of the point 2
      y2 - y coordinate of the point 2
      x3 - x coordinate of the point 3
      y3 - y coordinate of the point 3
      Throws:
      IllegalStateException - If the method was called within a text block.
      IOException - If the content stream could not be written.

    • curveTo1

      public void curveTo1(float x1, float y1, float x3, float y3) throws IOException
      Append a cubic Bézier curve to the current path. The curve extends from the current point to the point (x3, y3), using (x1, y1) and (x3, y3) as the Bézier control points.
      Parameters:
      x1 - x coordinate of the point 1
      y1 - y coordinate of the point 1
      x3 - x coordinate of the point 3
      y3 - y coordinate of the point 3
      Throws:
      IOException - If the content stream could not be written.
      IllegalStateException - If the method was called within a text block.

    • moveTo

      public void moveTo(float x, float y) throws IOException
      Move the current position to the given coordinates.
      Parameters:
      x - The x coordinate.
      y - The y coordinate.
      Throws:
      IOException - If the content stream could not be written.
      IllegalStateException - If the method was called within a text block.

    • lineTo

      public void lineTo(float x, float y) throws IOException
      Draw a line from the current position to the given coordinates.
      Parameters:
      x - The x coordinate.
      y - The y coordinate.
      Throws:
      IOException - If the content stream could not be written.
      IllegalStateException - If the method was called within a text block.

    • stroke

      public void stroke() throws IOException
      Stroke the path.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • closeAndStroke

      public void closeAndStroke() throws IOException
      Close and stroke the path.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • fill

      public void fill() throws IOException
      Fills the path using the nonzero winding number rule.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • fillEvenOdd

      public void fillEvenOdd() throws IOException
      Fills the path using the even-odd winding rule.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • fillAndStroke

      public void fillAndStroke() throws IOException
      Fill and then stroke the path, using the nonzero winding number rule to determine the region to fill. This shall produce the same result as constructing two identical path objects, painting the first with fill() and the second with stroke().
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • fillAndStrokeEvenOdd

      public void fillAndStrokeEvenOdd() throws IOException
      Fill and then stroke the path, using the even-odd rule to determine the region to fill. This shall produce the same result as constructing two identical path objects, painting the first with fillEvenOdd() and the second with stroke().
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • closeAndFillAndStroke

      public void closeAndFillAndStroke() throws IOException
      Close, fill, and then stroke the path, using the nonzero winding number rule to determine the region to fill. This shall have the same effect as the sequence closePath() and then fillAndStroke().
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • closeAndFillAndStrokeEvenOdd

      public void closeAndFillAndStrokeEvenOdd() throws IOException
      Close, fill, and then stroke the path, using the even-odd rule to determine the region to fill. This shall have the same effect as the sequence closePath() and then fillAndStrokeEvenOdd().
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • shadingFill

      public void shadingFill(PDShading shading) throws IOException
      Fills the clipping area with the given shading.
      Parameters:
      shading - Shading resource
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • closePath

      public void closePath() throws IOException
      Closes the current subpath.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • clip

      public void clip() throws IOException
      Intersects the current clipping path with the current path, using the nonzero rule.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • clipEvenOdd

      public void clipEvenOdd() throws IOException
      Intersects the current clipping path with the current path, using the even-odd rule.
      Throws:
      IOException - If the content stream could not be written
      IllegalStateException - If the method was called within a text block.

    • setLineWidth

      public void setLineWidth(float lineWidth) throws IOException
      Set line width to the given value.
      Parameters:
      lineWidth - The width which is used for drawing.
      Throws:
      IOException - If the content stream could not be written

    • setLineJoinStyle

      public void setLineJoinStyle(int lineJoinStyle) throws IOException
      Set the line join style.
      Parameters:
      lineJoinStyle - 0 for miter join, 1 for round join, and 2 for bevel join.
      Throws:
      IOException - If the content stream could not be written.
      IllegalArgumentException - If the parameter is not a valid line join style.

    • setLineCapStyle

      public void setLineCapStyle(int lineCapStyle) throws IOException
      Set the line cap style.
      Parameters:
      lineCapStyle - 0 for butt cap, 1 for round cap, and 2 for projecting square cap.
      Throws:
      IOException - If the content stream could not be written.
      IllegalArgumentException - If the parameter is not a valid line cap style.

    • setLineDashPattern

      public void setLineDashPattern(float[] pattern, float phase) throws IOException
      Set the line dash pattern.
      Parameters:
      pattern - The pattern array
      phase - The phase of the pattern
      Throws:
      IOException - If the content stream could not be written.

    • setMiterLimit

      public void setMiterLimit(float miterLimit) throws IOException
      Set the miter limit.
      Parameters:
      miterLimit - the new miter limit.
      Throws:
      IOException - If the content stream could not be written.
      IllegalArgumentException - If the parameter is ≤ 0.

    • beginMarkedContent

      public void beginMarkedContent(COSName tag) throws IOException
      Begin a marked content sequence.
      Parameters:
      tag - the tag to be added to the content stream
      Throws:
      IOException - If the content stream could not be written

    • beginMarkedContent

      public void beginMarkedContent(COSName tag, int mcid) throws IOException
      Begin a marked content sequence with a reference to the marked content identifier (MCID).
      Parameters:
      tag - the tag to be added to the content stream
      mcid - the marked content identifier (MCID)
      Throws:
      IOException - If the content stream could not be written

    • beginMarkedContent

      public void beginMarkedContent(COSName tag, PDPropertyList propertyList) throws IOException
      Begin a marked content sequence with a reference to an entry in the page resources' Properties dictionary.
      Parameters:
      tag - the tag to be added to the content stream
      propertyList - property list to be added to the content stream
      Throws:
      IOException - If the content stream could not be written

    • endMarkedContent

      public void endMarkedContent() throws IOException
      End a marked content sequence.
      Throws:
      IOException - If the content stream could not be written

    • setMarkedContentPoint

      public void setMarkedContentPoint(COSName tag) throws IOException
      set a marked content point.
      Parameters:
      tag - the tag to be added to the content stream
      Throws:
      IOException - If the content stream could not be written

    • setMarkedContentPointWithProperties

      public void setMarkedContentPointWithProperties(COSName tag, PDPropertyList propertyList) throws IOException
      Set a marked content point with a reference to an entry in the page resources' Properties dictionary.
      Parameters:
      tag - the tag to be added to the content stream
      propertyList - property list to be added to the content stream
      Throws:
      IOException - If the content stream could not be written

    • setGraphicsStateParameters

      public void setGraphicsStateParameters(PDExtendedGraphicsState state) throws IOException
      Set an extended graphics state.
      Parameters:
      state - The extended graphics state to be added to the content stream
      Throws:
      IOException - If the content stream could not be written.

    • addComment

      public void addComment(String comment) throws IOException
      Write a comment line.
      Parameters:
      comment - the comment to be added to the content stream
      Throws:
      IOException - If the content stream could not be written.
      IllegalArgumentException - If the comment contains a newline. This is not allowed, because the next line could be ordinary PDF content.

    • writeOperand

      protected void writeOperand(float real) throws IOException
      Writes a real number to the content stream.
      Parameters:
      real - the real number to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.
      IllegalArgumentException - if the parameter is not a finite number

    • writeOperand

      protected void writeOperand(int integer) throws IOException
      Writes an integer number to the content stream.
      Parameters:
      integer - the integer to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • writeOperand

      protected void writeOperand(COSName name) throws IOException
      Writes a COSName to the content stream.
      Parameters:
      name - the name to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • writeOperator

      protected void writeOperator(String text) throws IOException
      Writes a string to the content stream as ASCII.
      Parameters:
      text - the text to be added to the content stream followed by a newline
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • write

      protected void write(String text) throws IOException
      Writes a string to the content stream as ASCII.
      Parameters:
      text - the text to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • writeLine

      protected void writeLine() throws IOException
      Writes a newline to the content stream as ASCII.
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • writeBytes

      protected void writeBytes(byte[] data) throws IOException
      Writes binary data to the content stream.
      Parameters:
      data - as byte formatted to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • writeAffineTransform

      private void writeAffineTransform(AffineTransform transform) throws IOException
      Writes an AffineTransform to the content stream as an array.
      Parameters:
      transform - AffineTransform to be added to the content stream
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • close

      public void close() throws IOException
      Close the content stream. This must be called when you are done with this object.
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Throws:
      IOException - If the underlying stream has a problem being written to.

    • isOutside255Interval

      protected boolean isOutside255Interval(int val)

    • isOutsideOneInterval

      private boolean isOutsideOneInterval(double val)

    • setStrokingColorSpaceStack

      protected void setStrokingColorSpaceStack(PDColorSpace colorSpace)

    • setNonStrokingColorSpaceStack

      protected void setNonStrokingColorSpaceStack(PDColorSpace colorSpace)

    • setCharacterSpacing

      public void setCharacterSpacing(float spacing) throws IOException
      Set the character spacing. The value shall be added to the horizontal or vertical component of the glyph's displacement, depending on the writing mode.
      Parameters:
      spacing - character spacing
      Throws:
      IOException - If the content stream could not be written.

    • setWordSpacing

      public void setWordSpacing(float spacing) throws IOException
      Set the word spacing. The value shall be added to the horizontal or vertical component of the ASCII SPACE character, depending on the writing mode.

      This will have an effect only with Type1 and TrueType fonts, not with Type0 fonts. The PDF specification tells why: "Word spacing shall be applied to every occurrence of the single-byte character code 32 in a string when using a simple font or a composite font that defines code 32 as a single-byte code. It shall not apply to occurrences of the byte value 32 in multiple-byte codes."

      Parameters:
      spacing - word spacing
      Throws:
      IOException - If the content stream could not be written.

    • setHorizontalScaling

      public void setHorizontalScaling(float scale) throws IOException
      Set the horizontal scaling to scale / 100.
      Parameters:
      scale - number specifying the percentage of the normal width. Default value: 100 (normal width).
      Throws:
      IOException - If the content stream could not be written.

    • setRenderingMode

      public void setRenderingMode(RenderingMode rm) throws IOException
      Set the text rendering mode. This determines whether showing text shall cause glyph outlines to be stroked, filled, used as a clipping boundary, or some combination of the three.
      Parameters:
      rm - The text rendering mode.
      Throws:
      IOException - If the content stream could not be written.

    • setTextRise

      public void setTextRise(float rise) throws IOException
      Set the text rise value, i.e. move the baseline up or down. This is useful for drawing superscripts or subscripts.
      Parameters:
      rise - Specifies the distance, in unscaled text space units, to move the baseline up or down from its default location. 0 restores the default location.
      Throws:
      IOException - If the content stream could not be written.

    • encodeForGsub

      private byte[] encodeForGsub(GsubWorker gsubWorker, Set<Integer> glyphIds, PDType0Font font, String text) throws IOException
      Retrieve the encoded glyph IDs for the characters in the specified text, after applying any relevant GSUB rules. The glyph IDs used are also added to the specified glyph ID set.
      Parameters:
      gsubWorker - The GSUB worker which defines the GSUB transformations to apply.
      glyphIds - The set of glyph IDs which is to be populated with the glyph IDs found in the text.
      font - The font whose cmap table will be used to map characters to glyph IDs.
      text - The text which is being converted from characters to glyph IDs.
      Returns:
      The encoded glyph IDs for the characters in the specified text, after applying any relevant GSUB rules.
      Throws:
      IOException - If there is an error during encoding.
      IllegalStateException - If we cannot find a glyph ID for any characters in the specified text.

    • applyGSUBRules

      private List<Integer> applyGSUBRules(GsubWorker gsubWorker, ByteArrayOutputStream out, PDType0Font font, String word) throws IOException
      Retrieve the glyph IDs for the characters in the specified word, after applying any relevant GSUB rules. The encoded glyph IDs are also written to the specified output stream.
      Parameters:
      gsubWorker - The GSUB worker which defines the GSUB transformations to apply.
      out - The output stream to write the glyph IDs to.
      font - The font whose cmap table will be used to map characters to glyph IDs.
      word - The word which is being converted from characters to glyph IDs.
      Returns:
      The glyph IDs for the characters in the specified word, after applying any relevant GSUB rules.
      Throws:
      IllegalStateException - If we cannot find a glyph ID for any characters in the specified word.
      IOException