ImagickDraw::setTextUnderColor
(PECL imagick 2.0.0)
ImagickDraw::setTextUnderColor — Specifies the color of a background rectangle
说明
$under_color
)本函数还未编写文档，仅有参数列表。
Specifies the color of a background rectangle to place under text annotations.
参数
-
under_color -
the under color
返回值
没有返回值。
范例
Example #1 ImagickDraw::setTextUnderColor()
<?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 ();
}
?> 用户评论:
[#1] www dot query at gmail dot com [2011-09-08 09:01:08]
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.