ImagickDraw::setTextUnderColor

(PECL imagick 2.0.0)

ImagickDraw::setTextUnderColorSpecifies the color of a background rectangle

Descrizione

bool ImagickDraw::setTextUnderColor ( ImagickPixel $under_color )
Avviso

Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

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

Elenco dei parametri

under_color

the under color

Valori restituiti

Nessun valore viene restituito.

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www dot query at gmail dot com
2 years 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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