(PECL imagick 2.0.0)

ImagickDraw::setTextUnderColorSpecifies the color of a background rectangle


bool ImagickDraw::setTextUnderColor ( ImagickPixel $under_color )

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


the under color

Valori restituiti

Nessun valore viene restituito.

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User Contributed Notes 1 note

www dot query at gmail dot com
4 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.


= new ImagickDraw();


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