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    This version of the module is deprecated: Use moonbitlang/pdflite instead

    bobzhang/pdflite/addtext does not have a README file

    PdfBytes

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    type PdfBytes = Bytes

    PDF byte strings and byte streams.

    This is an alias for MoonBit Bytes because PDF strings and streams are byte sequences, not Unicode text. Use String only after an explicit PDF text decoding step.

    PdfName

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    A PDF name token stored as its raw bytes without the leading slash.

    Names are byte-oriented in the PDF file format. Keeping the original bytes avoids accidental UTF-16 or UTF-8 interpretation while still allowing explicit views and owned-byte access.

    PdfObject

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    The core in-memory representation of a parsed PDF object.

    Strings and names are byte-oriented PDF values, not MoonBit Unicode strings. PdfIndirect(number) is an unresolved reference by object number; callers that need the referenced object should resolve it through a PdfDocument.

    PdfRectangle

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    A normalized rectangle in PDF user-space coordinates.

    min_x and min_y are always the lower bounds, and max_x and max_y are always the upper bounds. Parsers normalize PDF rectangle arrays whose coordinates are written in the opposite order.

    Point2

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    A two-dimensional point in PDF user-space coordinates.

    PdfAddTextJustification

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    pub(all) enum PdfAddTextJustification {
      PdfAddTextLeftJustify
      PdfAddTextCentreJustify
      PdfAddTextRightJustify
    } derive(Eq, ToJson, 
    Debug    )

    Text justification values used by cpdf's add-text positioning helpers.

    PdfAddTextLinePlacement

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    pub(all) struct PdfAddTextLinePlacement {
      origin : 
    Point2
      base_rotation : Double
      text_rotation : Double
      rotation_offset : 
    Point2
      horizontal_offset : Double
      vertical_offset : Double
      justification_offset : Double
    } derive(Eq, ToJson, 
    Debug    )

    Resolved placement values for one cpdf add-text line.

    PdfAddTextLineWidths

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    pub(all) struct PdfAddTextLineWidths {
      text_width : Double
      widths : Array[Double]
      longest_width : Double
    } derive(Eq, ToJson, 
    Debug    )

    Width measurements for one cpdf add-text line and its expanded paragraph.

    PdfAddTextPreparedLine

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    pub(all) struct PdfAddTextPreparedLine {
      text : String
      text_bytes : Bytes
      urls : Array[PdfAddTextUrl]
      expanded_lines : Array[String]
      expanded_line_bytes : Array[Bytes]
      widths : PdfAddTextLineWidths
      placement : PdfAddTextLinePlacement
    } derive(Eq, ToJson, 
    Debug    )

    One cpdf add-text line after replacement expansion, URL stripping, width measurement, and placement resolution.

    PdfAddTextReplacementValues

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    pub(all) struct PdfAddTextReplacementValues {
      page_number : Int
      end_page : Int
      filename : String
      page_label : String
      end_label : String
      bates : Int
      bates_pad : Int?
      bookmarks : Array[String]
    } derive(Eq, ToJson, 
    Debug    )

    Values used to build cpdf add-text replacement callbacks.

    PdfAddTextResourceSetup

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    Page resources prepared for one cpdf add-text line.

    PdfAddTextRotation

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    pub(all) enum PdfAddTextRotation {
      PdfAddTextRot0
      PdfAddTextRot90
      PdfAddTextRot180
      PdfAddTextRot270
    } derive(Eq, ToJson, 
    Debug    )

    Text rotation values used by cpdf's add-text positioning helpers.

    PdfAddTextUrl

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    pub(all) struct PdfAddTextUrl {
      url : String
      start : Int
      end : Int
    } derive(Eq, ToJson, 
    Debug    )

    A URL span parsed from cpdf add-text %URL[text|url] markup.

    start and end are byte offsets in the visible output line, matching OCaml cpdf's String.length accounting.

    PdfAddTextUrlAnnotationGeometry

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    Transformed geometry for one add-text URL annotation.

    PdfAddTextUrlLine

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    pub(all) struct PdfAddTextUrlLine {
      text : String
      urls : Array[PdfAddTextUrl]
    } derive(Eq, ToJson, 
    Debug    )

    One add-text line after stripping %URL[text|url] markup.

    pdf_addtext_apply_justification_offset

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    fn pdf_addtext_apply_justification_offset(rotation : PdfAddTextRotation, horizontal_offset : Double, vertical_offset : Double, justification_offset : Double) -> (Double, Double)

    Apply cpdf's scalar justification offset to (horizontal, vertical).

    pdf_addtext_diagonal_offsets

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    fn pdf_addtext_diagonal_offsets(bounds : 
    PdfRectangle    , position : 
    PdfPosition    , rotation : PdfAddTextRotation, text_width : Double, horizontal_offset : Double, vertical_offset : Double, base_rotation : Double) -> (Double, Double)

    Adjust cpdf add-text offsets for diagonal and reverse-diagonal placement.

    pdf_addtext_get_urls_line

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    fn pdf_addtext_get_urls_line(line : String) -> PdfAddTextUrlLine raise 
    PdfError

    Strip cpdf add-text %URL[text|url] markup from one line.

    The returned URL spans use byte offsets in the stripped visible text, as in cpdf's get_urls_line helper.

    pdf_addtext_initial_line_offsets

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    fn pdf_addtext_initial_line_offsets(position : 
    PdfPosition    , line_count : Int, line_spacing : Double, font_size : Double) -> (Double, Double)

    Return cpdf's initial (horizontal, vertical) offset for a multi-line add-text paragraph.

    pdf_addtext_justification_offset

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    fn pdf_addtext_justification_offset(rotation : PdfAddTextRotation, longest_width : Double, width : Double, position : 
    PdfPosition    , justification : PdfAddTextJustification) -> Double

    Return cpdf's add-text justification offset for the current line.

    longest_width is the maximum rendered width among the expanded text lines, and width is the current line width.

    pdf_addtext_line_advance

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    fn pdf_addtext_line_advance(rotation : PdfAddTextRotation, line_spacing : Double, font_size : Double) -> (Double, Double)

    Return cpdf's per-line (horizontal, vertical) advance for add-text.

    pdf_addtext_line_placement

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    fn pdf_addtext_line_placement(bounds : 
    PdfRectangle    , position : 
    PdfPosition    , rotation : PdfAddTextRotation, text_width : Double, longest_width : Double, horizontal_offset : Double, vertical_offset : Double, justification : PdfAddTextJustification) -> PdfAddTextLinePlacement

    Resolve cpdf add-text placement values for one line.

    This combines cpdf's calculate_position, diagonal offset correction, justification offset application, explicit text rotation, and rotation-origin offset selection.

    pdf_addtext_rotation_offsets

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    fn pdf_addtext_rotation_offsets(position : 
    PdfPosition    , rotation : PdfAddTextRotation, text_width : Double) -> (Double, Double)

    Return cpdf's rotation-dependent text origin offset.

    pdf_addtext_rotation_radians

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    fn pdf_addtext_rotation_radians(rotation : PdfAddTextRotation) -> Double

    Convert cpdf add-text's explicit rotation enum to content rotation radians.

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