ImagickDraw
在线手册：中文 英文
PHP手册

ImagickDraw::setGravity

(PECL imagick 2.0.0)

ImagickDraw::setGravity — Sets the text placement gravity

说明

bool ImagickDraw::setGravity ( int $gravity )
Warning

本函数还未编写文档，仅有参数列表。

Sets the text placement gravity to use when annotating with text.

参数

gravity

GRAVITY_ constant

返回值

没有返回值。

ImagickDraw
在线手册：中文 英文
PHP手册
PHP手册 - N: Sets the text placement gravity

用户评论:

alan at ridersite dot org (28-Aug-2007 03:51)

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