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Support complex text layout (bidi, shaping, ordering) #2619

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18 tasks
bsweeney opened this issue Oct 27, 2021 · 2 comments · May be fixed by #2107
Open
18 tasks

Support complex text layout (bidi, shaping, ordering) #2619

bsweeney opened this issue Oct 27, 2021 · 2 comments · May be fixed by #2107
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enhancement i18n
Milestone
3.1.0

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@bsweeney
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bsweeney commented Oct 27, 2021 •
edited

In order to correctly render text from some writing system (Arabic, Brahmic) the text must be processed for bidirectionality, shaping, and ordering. Because Dompdf lacks this functionality users must pre-process their text before feeding to Dompdf. In order to better support rendering in these writing systems Dompdf should come with support for this type of functionality baked in.

The totality of functionality required to fully support rendering in various languages is complex so this will be a parent ticket. Checklist items and child tickets will be added as we go.

Functional support:

Language support (when font with supporting glyphs is available):
@bsweeney bsweeney added this to the 2.0.0 milestone Oct 27, 2021
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The current library we're looking at utilizing for underlying functionality is tc-lib-unicode.

@bsweeney bsweeney linked a pull request Oct 27, 2021 that will close this issue
RTL Language Support #2107
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This was referenced Oct 27, 2021
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@bsweeney bsweeney modified the milestones: 2.0.0, 2.1.0 Nov 8, 2021
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@bsweeney bsweeney mentioned this issue Feb 7, 2022
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Microsoft has decent reference documentation on features required for various languages: https://docs.microsoft.com/en-us/typography/script-development/use

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enhancement i18n
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3.1.0
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RTL Language Support simonberger/dompdf
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@bsweeney