ImagickDraw::setFontSize

(PECL imagick 2, PECL imagick 3)

ImagickDraw::setFontSize — Sets the font pointsize to use when annotating with text

说明

public ImagickDraw::setFontSize ( float $pointsize ) : bool

Warning

本函数还未编写文档，仅有参数列表。

Sets the font pointsize to use when annotating with text.

参数

pointsize: the point size

返回值

没有返回值。

范例

Example #1 ImagickDraw::setFontSize()


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

    $draw = new \ImagickDraw();

    $draw->setStrokeOpacity(1);
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(2);
    $draw->setFont("../fonts/Arial.ttf");

    $sizes = [24, 36, 48, 60, 72];

    foreach ($sizes as $size) {
        $draw->setFontSize($size);
        $draw->annotation(50, ($size * $size / 16), "Lorem Ipsum!");
    }

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

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

?>

User Contributed Notes

hmkrox at gmail dot com 03-Aug-2009 07:10


The font size taken in parameter is not the size in point (1 point = 1/72 inch) but the font's height in pixel. 

Therefore you should do a conversion to have the correct font size if you want to modify a document destined to print.

For example, if your document's resolution is 300ppi, you should add a 25/6 multiplying factor to your fontsize in order to have a correct behaviour of the font.

jgsujith at in dot com 15-Jul-2009 06:23


<?php


$sourceFile='in.jpg';


$textWrite='God is Great';


$x=50;


$y=50;    


$fontColor='#000000';


$fontSize=34;


  


$colorPix=new ImagickPixel ($fontColor);


$image=new Imagick ($sourceFile);


$draw=new ImagickDraw();


        


$draw->setFontSize($fontSize);//Sets the font pointsize to use when annotating with text





$draw->setFillColor($colorPix);//Sets the fill color to be used for drawing filled objects


            


$image->annotateImage($draw,$x,$y,0,$textWrite);//Annotates an image with text





$image->writeImage('out.jpg');//Writes an image to the specified filename


?>