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* new textgen.php script (create dynamic texture from url)

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Gudule Lapointe
2025-01-05 19:05:08 -04:00
parent 6141b37d2f
commit b552ff2ef1
1 changed files with 93 additions and 0 deletions
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textgen.php
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<?php
/**
* textgen.php
*
* This script generates an image with the specified text.
* Main purpose is to generate images for prim textures in Second Life or OpenSimulator.
* OpenSimulator now allows dynamic textures, which deprecated the need for this script.
* However it is still usefull
* - for simulator/grids that do not allow dynamic textures functionality
* - to lighten the load on the simulator by pre-generating the textures
* - to ensure texture consistency (dynamic textures tend to disappear sometimes)
*
* Version 2.0 use Imagick instead of GD, but is functionally equivalent to the previous versions.
*
* Usage :
* - http://example.com/textgen.php?string=Hello%20World
* - http://example.com/textgen.php?string=Hello%20World&font=Impact&size=120&color=white&background=black&download=true
*
* The fonts available on your server can be listed by calling the script with the parameter 'json' or 'list'
*
* URL parameters :
*
* @param string $list If set, the script will output a text list of available fonts and exit
* @param string $json If set, the script will output a JSON-formatted list of available fonts and exit
* @param string $string The text to be rendered
* @param string $font The font to be used
* @param int $fontsize The font size
* @param string $textcolor The text color
* @param string $backgroundcolor The background color
* @param bool $download If set, the image will be downloaded, otherwise it will be displayed in the browser
* @param bool $inpage (deprecated) If set, the image will be displayed in the browser, otherwise it will be downloaded
*
* @version 2.0
**/
$fontsize = isset( $_REQUEST['fontsize'] ) ? $_REQUEST['size'] : 120;
$textcolor = isset( $_REQUEST['color'] ) ? $_REQUEST['color'] : 'white';
$backgroundcolor = isset( $_REQUEST['background'] ) ? $_REQUEST['background'] : 'black';
$font = isset( $_REQUEST['font'] ) ? $_REQUEST['font'] : 'Impact';
$download = isset( $_REQUEST['inpage'] ) ? false : true;
$download = isset( $_REQUEST['download'] ) ? true : false;
$string = isset( $_REQUEST['string'] ) ? urldecode( preg_replace( ":\\\':", '\'', $_REQUEST['string'] ) ) : $font;
$finalwidth = 1024;
$finalheight = 1024;
$workheight = 1024;
$workwidth = 1024;
$queryFonts = \Imagick::queryFonts( '*' );
if ( isset( $_REQUEST['json'] ) ) {
header( 'Content-Type: application/json' );
echo json_encode( $queryFonts );
exit;
} elseif ( isset( $_REQUEST['list'] ) ) {
header( 'Content-Type: text/plain' );
echo implode( "\n", $queryFonts );
exit;
}
if ( ! in_array( $font, $queryFonts ) ) {
$font = 'DejaVu-Sans'; // Use a default font if the specified font is not available
}
$draw = new ImagickDraw();
$draw->setFont( $font );
$draw->setFontSize( $fontsize );
$draw->setFillColor( $textcolor );
$draw->setTextAlignment( Imagick::ALIGN_CENTER );
$imagick = new Imagick();
$imagick->newImage( $workwidth, $workheight, $backgroundcolor );
$imagick->setImageFormat( 'png' );
$metrics = $imagick->queryFontMetrics( $draw, $string );
$textwidth = $metrics['textWidth'];
$textheight = $metrics['textHeight'];
$xcord = ( $workwidth / 2 );
$ycord = ( $workheight / 2 ) + ( $textheight / 4 );
$imagick->annotateImage( $draw, $xcord, $ycord, 0, $string );
$imagick->resizeImage( $finalwidth, $finalheight, Imagick::FILTER_LANCZOS, 1 );
header( 'Content-type: image/png' );
if ( $download ) {
header( "Content-Disposition: attachment; filename=\"${string}.png\"" );
}
echo $imagick;
$imagick->clear();
$imagick->destroy();