Font::TTF::Vhea(3) User Contributed Perl Documentation Font::TTF::Vhea(3)

# [NAME](#NAME)

Font::TTF::Vhea - Vertical Header table

# [DESCRIPTION](#DESCRIPTION)

This is a simple table with just standards specified instance variables

# [INSTANCE VARIABLES](#INSTANCE_VARIABLES)

```
    version
    Ascender
    Descender
    LineGap
    advanceHeightMax
    minTopSideBearing
    minBottomSideBearing
    yMaxExtent
    caretSlopeRise
    caretSlopeRun
    metricDataFormat
    numberOfVMetrics
```

# [METHODS](#METHODS)

## [$t->read](#$t)

Reads the table into memory as instance variables

## [$t->out($fh)](#$t~2)

Writes the table to a file either from memory or by copying.

## [$t->**minsize()**](#$t~3)

Returns the minimum size this table can be. If it is smaller than this, then the table must be bad and should be deleted or whatever.

## [$t->update](#$t~4)

Updates various parameters in the hhea table from the hmtx table, assuming the "hmtx" table is dirty.

# [BUGS](#BUGS)

None known

# [AUTHOR](#AUTHOR)

Martin Hosken <http://scripts.sil.org/FontUtils>.

# [LICENSING](#LICENSING)

Copyright (c) 1998-2016, SIL International (http://www.sil.org)

This module is released under the terms of the Artistic License 2.0. For details, see the full text of the license in the file LICENSE.

2026-09-25 perl v5.44.0

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Document: Font::TTF::Vhea(3pm) from perl-font-ttf 1.06-r0 (Chainguard OS)