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ImagickDraw::setGravity

(PECL imagick 2, PECL imagick 3)

ImagickDraw::setGravityMetnin 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
16 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
10 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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