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balkon: Text layout engine built on top of HarfBuzz.

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Given an input text and formatting options, Balkón produces an inline layout with defined glyph positions and box coordinates, all within a containing unit called a paragraph. See Data.Text.ParagraphLayout.Rich.

Internally, HarfBuzz is used to shape individual runs of text, each of which fits within one line and has a constant script, direction, language, and formatting. Balkón abstracts this so that you can provide text with any mix of these attributes and a desired line width for line breaking.

Additionally, Balkón can be used for breaking an inline layout into pages. See Data.Text.ParagraphLayout.

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library balkon

Modules

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library balkon:balkon-internal

Modules

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  • Data
    • Text
      • ParagraphLayout
        • Internal
          • Data.Text.ParagraphLayout.Internal.AncestorBox
          • Data.Text.ParagraphLayout.Internal.ApplyBoxes
          • Data.Text.ParagraphLayout.Internal.BiDiLevels
          • Data.Text.ParagraphLayout.Internal.BiDiReorder
          • Data.Text.ParagraphLayout.Internal.BoxOptions
          • Data.Text.ParagraphLayout.Internal.Break
          • Data.Text.ParagraphLayout.Internal.Fragment
          • Data.Text.ParagraphLayout.Internal.LineHeight
          • Data.Text.ParagraphLayout.Internal.LinePagination
          • Data.Text.ParagraphLayout.Internal.Paginable
          • Data.Text.ParagraphLayout.Internal.ParagraphConstruction
          • Data.Text.ParagraphLayout.Internal.ParagraphOptions
          • Data.Text.ParagraphLayout.Internal.Plain
            • Data.Text.ParagraphLayout.Internal.Plain.Paragraph
            • Data.Text.ParagraphLayout.Internal.Plain.ParagraphLayout
          • Data.Text.ParagraphLayout.Internal.Rect
          • Data.Text.ParagraphLayout.Internal.ResolvedBox
          • Data.Text.ParagraphLayout.Internal.ResolvedSpan
          • Data.Text.ParagraphLayout.Internal.Rich
            • Data.Text.ParagraphLayout.Internal.Rich.Paragraph
            • Data.Text.ParagraphLayout.Internal.Rich.ParagraphLayout
          • Data.Text.ParagraphLayout.Internal.Run
          • Data.Text.ParagraphLayout.Internal.Span
          • Data.Text.ParagraphLayout.Internal.TextContainer
          • Data.Text.ParagraphLayout.Internal.TextOptions
          • Data.Text.ParagraphLayout.Internal.Tree
          • Data.Text.ParagraphLayout.Internal.WithSpan
          • Data.Text.ParagraphLayout.Internal.Zipper

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Versions [RSS] 0.1.0.0, 0.2.0.0, 0.2.1.0, 0.3.0.0, 1.0.0.0, 1.0.0.1, 1.1.0.0, 1.2.0.0, 1.3.0.0
Change log CHANGELOG.md
Dependencies balkon, base (>=4.12 && <4.16), harfbuzz-pure (>=1.0.3.2 && <1.1), text (>=2.0.2 && <3), text-icu (>=0.8.0.2 && <0.9), unicode-data-scripts (>=0.2.0.1 && <0.3) [details]
License GPL-3.0-only
Author Jaro
Maintainer jaro@argonaut-constellation.org
Category Text
Home page https://argonaut-constellation.org/
Bug tracker https://todo.argonaut-constellation.org/~jaro/balkon
Source repo head: git clone https://git.argonaut-constellation.org/~jaro/balkon -b main
Uploaded by alcinnz at 2023-05-31T06:37:42Z
Distributions
Reverse Dependencies 1 direct, 0 indirect [details]
Downloads 484 total (11 in the last 30 days)
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Status Docs uploaded by user [build log]
All reported builds failed as of 2023-05-31 [all 2 reports]

Readme for balkon-1.1.0.0

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Balkón

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Haskell library built on top of HarfBuzz to lay out text within a paragraph.

Just like flowers on a balcony, text must be arranged carefully within a limited space and put into neat little boxes.

Intended to be the inline layout engine for The Argonaut Stack.