Re: Q per adding text to png
| From: | David Robley | Date: | Wed, 07 Nov 2001 06:40:03 +0000 |
| Subject: | Re: Q per adding text to png | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-73676@lists.php.net to get a copy of this message | ||
On Wed, 7 Nov 2001 01:29, Joelmon2001@aol.com wrote:
> Hello, I know how to create an image via php but what if I have an
> image in the root
> called 'button.png' and I simply want to add text to it so button.png
> has the text I specify?
>
> When I *create* images, I can add text just fine. But to overwrite the
> blank image to have text? Do I have to have that freetype installed? I
> can't use those font commends on win 98 and when I install php 4+ on
> linux, I won't know how to call those font commands
>
> can I just use the same querystring method
> $string = urlencode("where");
>
> so
> ?where=Test
> would allow 'test' to be in button.png?
>
> or is this not allowed in php?
>
> Thanks
I do it regularly - hack around with this script which is originally
courtesy of Rasmus
<?php
Header("Content-type: image/png");
/* 645 x 77 image with background for headers. Background image and font
live in $home */
$home = '/usr/local/apache/htdocs/images/source/';
$bkgrd = $home . 'heading_bkgrd.png';
//$font = $home . 'arialbd.ttf';
$font = $home . 'ARIALBD.TTF';
$text = stripslashes($text);
/* Font size 24 points unless otherwise defined */
if(!isset($s)) $s=18;
if(!isset($text)) $text = "What's New??";
if(!isset($from_left)) $from_left = 10;
$size = imagettfbbox($s,0,$font,$text);
$dx = abs($size[2]-$size[0]);
$dy = abs($size[5]-$size[3]);
$im = ImageCreateFromPng($bkgrd);
$wide = ImageSX($im);
$high = ImageSY($im);
//echo "Width = $wide; Height = $high<BR>";
//echo "DX = $dx; DY = $dy<BR>";
//echo ($wide-$dx). '<BR>';
$black = ImageColorAllocate($im, 0,0,0);
/* This one centres the text horizontally and vertically */
//ImageTTFText($im, $s, 0, (int)(($wide - $dx)/2 + 1), (int)(($high +
$dy)/2), $black, $font, $text);
/* This one centres the text vertically and places it $from_left pixels
from the left
side of the background image */
ImageTTFText($im, $s, 0, $from_left, (int)(($high + $dy)/2 -3), $black,
$font, $text);
//ImageTTFText($im, $s, 0, (int)($xpad/2)+1, $dy+(int)($ypad/2), $black,
$font, $text);
ImagePng($im);
ImageDestroy($im);
?>$im);
ImageDestroy($im);
?>
--
David Robley Techno-JoaT, Web Maintainer, Mail List Admin, etc
CENTRE FOR INJURY STUDIES Flinders University, SOUTH AUSTRALIA
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