imageloadfont

(PHP 4, PHP 5)

imageloadfont — Carrega uma nova fonte

Descrição

int imageloadfont ( string $file )

imageloadfont() carrega uma fonte bitmap do usuário e retorna um identificador.

Parâmetros

file

O formato do arquivo de fonte é atualmente binário e dependente da arquitetura. Isto indica que você deverá gerar os arquivos de fonte no mesmo tipo de CPU no qual esta executando o PHP.

**Formato do arquivo de fonte**
Posição do byte	Tipo de dados C	Descrição
byte 0-3	int	Número de caracteres na fonte
byte 4-7	int	Valor do primeiro caractere na fonte (normalmente 32 para o espaço)
byte 8-11	int	A largura em pixel de cada caractere
byte 12-15	int	A altura em pixel de cada caractere
byte 16-	char	Matriz com os dados dos caracteres, um byte por pixel em cada caractere para um total de (caractereslarguraaltura).

Valor Retornado

The font identifier which is always bigger than 5 to avoid conflicts with built-in fonts or FALSE on errors.

Exemplos

Exemplo #1 Usando imageloadfont


<?php
header("Content-type: image/png");
$im = imagecreatetruecolor(50, 20);
$black = imagecolorallocate($im, 0, 0, 0);
$white = imagecolorallocate($im, 255, 255, 255);
imagefilledrectangle($im, 0, 0, 49, 19, $white);
$font = imageloadfont("04b.gdf");
imagestring($im, $font, 0, 0, "Hello", $black);
imagepng($im);
?>

Veja Também

imagepalettecopy

imageline

Last updated: Fri, 22 Aug 2008

add a note User Contributed Notes
imageloadfont

widget at oneblacksheep dot com
21-Nov-2007 12:07


The url for the gdf fonts page has now changed to http://www.devtrolls.com/gdf_fonts/ the old url will redirect for a short while.

dave [at] wedwick.com
08-Jan-2007 03:55


I created a Windows program to convert Windows fonts to PHP fonts.  It shows a preview as well as allows sample text to be entered.



http://www.wedwick.com/wftopf.exe

siker at norwinter dot com
29-Aug-2005 03:37


Working under the assumption that the only 'architecture dependant' part of the font files is endianness, I wrote a quick and dirty Python script to convert between the two. It has only been tested on a single font on a single machine so don't bet your life on it working. All it does is swap the byte order of the first four ints.



#!/usr/bin/env python



f = open("myfont.gdf", "rb");

d = open("myconvertedfont.gdf", "wb");



for i in xrange(4):

        b = [f.read(1) for j in xrange(4)];

        b.reverse();

        d.write(''.join(b));



d.write(f.read());



I successfully used this script to convert anonymous.gdf, from one of the font links below, into something useable on Mac OS X.

matthew at exanimo dot com
15-Aug-2005 07:28


Remember - GD fonts aren't antialiased.  If you're planning on using a pre-existing (TrueType) font, you may want to consider using imagettftext() instead of phillip's function.

alex at bestgames dot ro
02-Jul-2005 02:01


Confirmation code generation for preventing automated registrations on a website.



Function arguments are:

$code - the code that you shall random generate

$location - relative location of the image that shall be generated

$fonts_dir - relative location for the GDF fonts directory



This function will create an image with the code given by you and will save it in the directory specified with the name formed by MD5 hash of the code.



You may insert as many font types in the fonts directory as you wish, with random names.



<?php

function generate_image($code, $location, $fonts_dir)

{

     $image  = imagecreate(150, 60);           

     imagecolorallocate($image, rand(0, 100), rand(100, 150), rand(150, 250));

     $fonts = scandir($fonts_dir);

     

     $max = count($fonts) - 2;

     

     $width = 10;

     for ($i = 0; $i <= strlen($code); $i++)

     {     

         $textcolor = imagecolorallocate($image, 255, 255, 255);

         $rand = rand(2, $max);

         $font = imageloadfont($fonts_dir."/".$fonts[$rand]);

         

         $fh = imagefontheight($font);

         $fw = imagefontwidth($font);



         imagechar($image, $font, $width, rand(10, 50 - $fh), $code[$i], $textcolor);     

          $width = $width + $fw;

        

     }

             

     imagejpeg($image, $location."/".md5($code).".jpg", 100);

     imagedestroy($image);       

    

     return $code;

     

}



?>

puremango dot co dot uk at gmail dot com
22-Apr-2005 02:54


I've written an online tool in PHP that allows you to create GD fonts from PNG images.



much usefulness for custom font creation, I feel.



see the tool@

http://puremango.co.uk/cm_fontmaker_114.php

(source available online)

null at phpmix dot com
22-Dec-2004 06:59


Sometime ago I wrote a small tutorial on how to create dynamic signatures using gd_fonts. I also uploaded some gd_fonts...



You can check it out here, if you wish:

http://www.phpmix.com/phpBB2/viewtopic.php?t=328



Hope that helps

widget at oneblacksheep dot com
05-Jun-2004 02:41


After noting the gd fonts page from dryes58 above was down I contacted the him and have put the pages up at http://www.widgnet.com/gdf_fonts/ hows about that then =)

angryziber at mail dot com
23-Aug-2000 04:23


You all should look at the GD image library site for information on extra fonts, it can be found at http://www.boutell.com/gd/

add a note

imagepalettecopy

imageline

Last updated: Fri, 22 Aug 2008