ImagickDraw::setGravity

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::setGravity — Metnin çekim yönünü belirler

    Açıklama

    public ImagickDraw::setGravity(int $çekimYönü): bool
    Uyarı

    Bu işlev hala belgelendirilmemiştir; sadece bağımsız değişken listesi mevcuttur.

    Metin yerleştirilirken kullanılacak çekim yönünü belirler.

    Bağımsız Değişkenler

    çekimYönü

    Çekim yönü sabitlerinden biri (imagick::GRAVITY_*).

    Dönen Değerler

    Hiçbir değer dönmez.

    Örnekler

    Örnek 1 - ImagickDraw::setGravity() örneği

    <?php
    function setGravity($fillColor, $strokeColor, $backgroundColor) {

    $draw = new \ImagickDraw();
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(1);
    $draw->setFontSize(24);

    $gravitySettings = array(
    \Imagick::GRAVITY_NORTHWEST => 'NorthWest',
    \Imagick::GRAVITY_NORTH => 'North',
    \Imagick::GRAVITY_NORTHEAST => 'NorthEast',
    \Imagick::GRAVITY_WEST => 'West',
    \Imagick::GRAVITY_CENTER => 'Centre',
    \Imagick::GRAVITY_SOUTHWEST => 'SouthWest',
    \Imagick::GRAVITY_SOUTH => 'South',
    \Imagick::GRAVITY_SOUTHEAST => 'SouthEast',
    \Imagick::GRAVITY_EAST => 'East'
    );

    $draw->setFont("../fonts/Arial.ttf");

    foreach (    $gravitySettings as $type => $description) {
    $draw->setGravity($type);
    $draw->annotation(50, 50, '"' . $description . '"');
    }

    $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 2 notes

    up
    5
    alan at ridersite dot org
    17 years ago
    Gravity constants are very useful as they can save having to calculate the placement of variable text strings and font sizes.

    For example:
    $draw->setGravity (Imagick::GRAVITY_CENTER);
    $image->annotateImage($draw, 0, 0, 0, 'The quick brown fox jumps over the lazy dog');

    Will horizontally and vertically center the text string.

    Note, there are several gravity constants available. See, Constants — Imagick class constants
    up
    -2
    bcre8ve at gmail dot com
    11 years ago
    It appears that the GRAVITY constants have an integer equivalent:
    NORTHWEST = 1
    NORTH = 2
    NORTHEAST = 3
    WEST = 4
    CENTER = 5
    EAST = 6
    SOUTHWEST = 7
    SOUTH = 8
    SOUTHEAST = 9
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