Aaron Madlon-Kay created PDFBOX-4106: ----------------------------------------
Summary: Vertical text creation Key: PDFBOX-4106 URL: https://issues.apache.org/jira/browse/PDFBOX-4106 Project: PDFBox Issue Type: New Feature Components: FontBox, Parsing, Writing Reporter: Aaron Madlon-Kay Attachments: 0001-Parse-GSUB-table.patch, 0002-Abstract-cmap-lookup-into-an-interface.patch, 0003-Implement-GSUB-substitution-on-TrueTypeFont.patch, 0004-Use-vhea-vmtx-to-fix-vertical-displacements-in-PCIDF.patch, 0005-Add-factory-methods-for-loading-TTF-as-vertical-font.patch, 0006-Implement-vertical-metrics-support-when-embedding-su.patch, sample_code.txt, vertical.pdf I needed to output vertical Japanese text, but was stymied by several limitations: * No API to load a TTF as Identity-V encoding * No support for 'vert' glyph substitution * No support for vertical metrics ('vhea' and 'vmtx' tables are parsed but not used at all) I have attached a series of patches that implement the above features. Highlights: * The GSUB glyph substitution table is parsed (limitation: type 1 lookups only; this is sufficient for many features including 'vert'/'vrt2' vertical glyph substitution) * Cmap lookup makes use of GSUB when features are enabled on a TTF * 'vhea' and 'vmtx' metrics are applied to PDCIDFont when appropriate, and are embedded/subsetted correctly through the DW2/W2 CIDFont dictionary * An API has been added for loading a TTF as a vertical font, setting Identity-V encoding and enabling 'vert'/'vrt2' substitution Each patch could approximately be split out into a separate ticket, if desired. Also attached is some sample code that exercises these patches and illustrates the effect of vertical glyph positioning. The sample output PDF is also attached. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org