---
name: "PDF::API2::Basic::TTF::Vhea"
section: "3pm"
platform: "linux"
package: "libpdf-api2-perl"
version: "0.73-1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/PDF::API2::Basic::TTF::Vhea"
---

# PDF::API2::Basic::TTF::Vhea(3pm)

Vertical Header table

## NAME

PDF::API2::Basic::TTF::Vhea - Vertical Header table

## DESCRIPTION

This is a simple table with just standards specified instance variables

## INSTANCE VARIABLES

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

## METHODS

### $t-\>read

Reads the table into memory as instance variables

### $t-\>out($fh)

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

### $t-\>update

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

## BUGS

None known

## AUTHOR

Martin Hosken Martin\_Hosken@sil.org. See PDF::API2::Basic::TTF::Font for copyright and licensing.