[edit] Last updated: Fri, 17 May 2013

ImagickDraw::setTextUnderColor

(PECL imagick 2.0.0)

ImagickDraw::setTextUnderColor — Specifies the color of a background rectangle

Description

bool ImagickDraw::setTextUnderColor ( ImagickPixel $under_color )

Warning

This function is currently not documented; only its argument list is available.

Specifies the color of a background rectangle to place under text annotations.

Parameters

under_color: the under color

Return Values

No value is returned.

add a note User Contributed Notes ImagickDraw::setTextUnderColor - [1 notes]

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www dot query at gmail dot com ¶

1 year ago


When wishing to print some text on a photograph and make that text sufficiently contrasting to the background image, use a 4 byte code for colour and transparency.



It is the same 4 byte code using by the parameter '-undercolor' in ImageMagick's command lime instruction 'convert'.



The first 3 bytes are the RGB colour code and the fourth byte is the transparency byte.



<?php



    $draw = new ImagickDraw();

    $draw->setFillColor('#ffff00');

    $draw->setFont('Eurostile');

    $draw->setFontSize(21);

    $draw->setTextUnderColor('#ff000088');

    $picin->annotateImage($draw,40,$height-10,0,"Hallo");



?>



The example code produces yellow text on a semi-transparent red background.

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