ImagickDraw::setTextUnderColor

    (PECL imagick 2, PECL imagick 3)

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

    Description

    public ImagickDraw::setTextUnderColor(ImagickPixel $under_color): bool
    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.

    Examples

    Example #1 ImagickDraw::setTextUnderColor() example

    <?php
    function setTextUnderColor($strokeColor, $fillColor, $backgroundColor, $textUnderColor) {
    $draw = new \ImagickDraw();

    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(2);
    $draw->setFontSize(72);
    $draw->annotation(50, 75, "Lorem Ipsum!");
    $draw->setTextUnderColor($textUnderColor);
    $draw->annotation(50, 175, "Lorem Ipsum!");

    $imagick = new \Imagick();
    $imagick->newImage(500, 500, $backgroundColor);
    $imagick->setImageFormat("png");

    $imagick->drawImage($draw);

    header("Content-Type: image/png");
    echo     $imagick->getImageBlob();
    }

    ?>

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    User Contributed Notes 1 note

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    www dot query at gmail dot com
    12 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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