---
name: "Prima::Image::TransparencyControl"
section: "3"
platform: "linux"
package: "libprima-perl"
version: "1.28-1.3+b3"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/Prima::Image::TransparencyControl"
---

# Prima::Image::TransparencyControl(3)

standard dialog for transparent color index selection.

## NAME

Prima::Image::TransparencyControl - standard dialog for transparent color index selection.

## DESCRIPTION

The module contains two classes - `"Prima::Image::BasicTransparencyDialog"` and `"Prima::Image::TransparencyControl"`. The former provides a dialog, used by image codec-specific save options dialogs to select a transparent color index when saving an image to a file. `"Prima::Image::TransparencyControl"` is a widget class that displays the image palette and allow color rather than index selection.

## Prima::Image::TransparencyControl

### Properties

- index INTEGER

  Selects the palette index.

- image IMAGE

  Selects image which palette is displayed, and the color  index can be selected from.

### Events

- Change

  Triggered when the user changes `"index"` property.

## Prima::Image::BasicTransparencyDialog

### Methods

- transparent BOOLEAN

  If 1, the transparent selection widgets are enabled, and the user can select the palette index. If 0, the widgets are disabled; the image file is saved with no transparent color index.

  The property can be toggled interactively by a checkbox.

## AUTHOR

Dmitry Karasik, \<dmitry@karasik.eu.org\>.

## SEE ALSO

Prima::ImageDialog.