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<?php
namespace Bitweaver\Liberty;
use Bitweaver\KernelTools;
/**
* $Header$
*
* Image processor - extension: php-gd
* @package liberty
* @subpackage plugins_processor
* @author spider <spider@steelsun.com>
*/
/**
* liberty_gd_resize_image
*
* @param array $pFileHash
* @access public
* @return bool true on success, false on failure - mErrors will contain reason for failure
*/
function liberty_gd_resize_image( &$pFileHash ) {
global $gBitSystem;
$ret = null;
list($iwidth, $iheight, $itype, $iattr) = @getimagesize( $pFileHash['source_file'] );
list($type, $ext) = explode( '/', strtolower( $pFileHash['type'] ) );
if( ( empty( $pFileHash['max_width'] ) || empty( $pFileHash['max_height'] ) ) || ( $iwidth <= $pFileHash['max_width'] && $iheight <= $pFileHash['max_height'] && ( $ext == 'gif' || $ext == 'png' || $ext == 'jpg' || $ext == 'jpeg' ) ) ) {
// Keep the same dimensions as input file
$pFileHash['max_width'] = $iwidth;
$pFileHash['max_height'] = $iheight;
} elseif( $iheight && (($iwidth / $iheight) > 0) && !empty( $pFileHash['max_width'] ) && !empty( $pFileHash['max_height'] ) ) {
// we have a portrait image, flip everything
$temp = $pFileHash['max_width'];
$pFileHash['max_height'] = $pFileHash['max_width'];
$pFileHash['max_width'] = $temp;
}
// we need to scale and/or reformat
$fp = fopen( $pFileHash['source_file'], "rb" );
$data = fread( $fp, filesize( $pFileHash['source_file'] ) );
fclose ($fp);
if( function_exists( "ImageCreateFromString" ) ) {
$img = @imagecreatefromstring($data);
}
if( !empty( $img ) ) {
$size_x = imagesx($img);
$size_y = imagesy($img);
}
if( !empty( $img ) && $size_x && $size_y ) {
if( $size_x > $size_y && !empty( $pFileHash['max_width'] ) ) {
$tscale = (int)$size_x / $pFileHash['max_width'];
} elseif( !empty( $pFileHash['max_height'] ) ) {
$tscale = (int)$size_y / $pFileHash['max_height'];
} else {
$tscale = 1;
}
$tw = (int)( $size_x / $tscale );
$ty = (int)( $size_y / $tscale );
if( get_gd_version() > 1 ) {
$t = imagecreatetruecolor( $tw, $ty );
imagesavealpha( $t, true );
imagealphablending( $t, false );
imagecopyresampled( $t, $img, 0, 0, 0, 0, $tw, $ty, $size_x, $size_y );
} else {
$t = imagecreate( $tw, $ty );
//$imagegallib->ImageCopyResampleBicubic($t, $img, 0, 0, 0, 0, $tw, $ty, $size_x, $size_y);
}
// override $mimeExt if we have a custom setting for it
if( $gBitSystem->isFeatureActive( 'liberty_thumbnail_format' )) {
$mimeExt = $gBitSystem->getConfig( 'liberty_thumbnail_format' );
} else {
list( $type, $mimeExt ) = explode( '/', strtolower( image_type_to_mime_type( $itype )));
}
if( $mimeExt = preg_replace( "!^(x-)?(jpeg|png|gif)$!", "$2", $mimeExt )) {
$targetType = $mimeExt;
$destExt = '.'.$mimeExt;
}
if( !$mimeExt || $mimeExt == 'jpeg' ) {
$targetType = 'jpeg';
$destExt = '.jpg';
}
$destFile = !empty( $pFileHash['dest_file'] )
? $pFileHash['dest_file']
: STORAGE_PKG_PATH.$pFileHash['dest_branch'].$pFileHash['dest_base_name'].$destExt;
switch( $targetType ) {
case 'png':
if( imagetypes() & IMG_PNG ) {
// png alpha stuff - needs more testing - spider
// imagecolorallocatealpha ( $t, 0, 0, 0, 127 );
// $ImgWhite = imagecolorallocate($t, 255, 255, 255);
// imagefill($t, 0, 0, $ImgWhite);
// imagecolortransparent($t, $ImgWhite);
imagepng( $t, $destFile );
break;
}
case 'gif':
// This must go immediately before default so default will be hit for PHP's without gif support
if( imagetypes() & IMG_GIF ) {
imagecolortransparent( $t );
imagegif( $t, $destFile );
break;
}
default:
imagejpeg( $t, $destFile );
break;
}
// set permissions if possible - necessary for some wonky shared hosting environments
if( chmod( $pFileHash['source_file'], 0644 )){
// does nothing, but fails elegantly
}
$pFileHash['name'] = $pFileHash['dest_base_name'].$destExt;
$pFileHash['size'] = filesize( $destFile );
$ret = $destFile;
} elseif( $iwidth && $iheight ) {
$ret = liberty_process_generic( $pFileHash, false );
}
return $ret;
}
/**
* liberty_gd_rotate_image
*
* @param array $pFileHash
* @param array $pFormat
* @access public
* @return bool true on success, false on failure - mErrors will contain reason for failure
*/
function liberty_gd_rotate_image( &$pFileHash, $pFormat = null ) {
if( !function_exists( 'imagerotate' ) ) {
$pFileHash['error'] = "Rotate is not available on this webserver.";
} elseif( empty( $pFileHash['degrees'] ) || !is_numeric( $pFileHash['degrees'] ) ) {
$pFileHash['error'] = KernelTools::tra( 'Invalid rotation amount' );
} else {
// we need to scale and/or reformat
$fp = fopen( $pFileHash['source_file'], "rb" );
$data = fread( $fp, filesize( $pFileHash['source_file'] ) );
fclose ($fp);
if( function_exists("ImageCreateFromString") ) {
$img = @imagecreatefromstring($data);
}
if( !empty( $img ) ) {
// image rotate degrees seems back ass words.
$rotateImg = imagerotate ( $img, -1 * $pFileHash['degrees'], 0 );
if( !empty( $rotateImg ) ) {
imagejpeg( $rotateImg, $pFileHash['source_file'] );
} else {
$pFileHash['error'] = "Image rotation failed.";
}
} else {
$pFileHash['error'] = "Image could not be opened for rotation.";
}
}
return empty( $pFileHash['error'] );
}
/**
* liberty_gd_can_thumbnail_image
*
* @param string $pMimeType
* @access public
* @return string|bool true on success, false on failure
*/
function liberty_gd_can_thumbnail_image( $pMimeType ) {
$ret = false;
if( !empty( $pMimeType )) {
$ret = preg_match( '/^image/i', $pMimeType );
}
return $ret;
}
/**
* get_gd_version
*
* @access public
* @return string
*/
function get_gd_version( $pFullVersion = false ) {
if( empty( $_SESSION['gd_version'] )) {
$gd = gd_info();
$_SESSION['gd_version'] = preg_replace( "!\D*([\d|\.]*)!", "$1", $gd['GD Version'] );
}
if( $pFullVersion ) {
return $_SESSION['gd_version'];
}
return preg_replace( "!^(\d)+.*$!", "$1", $_SESSION['gd_version'] );
}
// nicked from http://at2.php.net/manual/en/function.gd-info.php
if( !function_exists( 'gd_info' )) {
function gd_info() {
$array = [
"GD Version" => "",
"FreeType Support" => 0,
"FreeType Linkage" => "",
"T1Lib Support" => 0,
"GIF Read Support" => 0,
"GIF Create Support" => 0,
"JPG Support" => 0,
"PNG Support" => 0,
"WBMP Support" => 0,
"XBM Support" => 0,
];
$gif_support = 0;
ob_start();
eval("phpinfo();");
$info = ob_get_contents();
ob_end_clean();
foreach(explode("\n", $info) as $line) {
if(strpos($line, "GD Version")!==false)
$array["GD Version"] = trim(str_replace("GD Version", "", strip_tags($line)));
if(strpos($line, "FreeType Support")!==false)
$array["FreeType Support"] = trim(str_replace("FreeType Support", "", strip_tags($line)));
if(strpos($line, "FreeType Linkage")!==false)
$array["FreeType Linkage"] = trim(str_replace("FreeType Linkage", "", strip_tags($line)));
if(strpos($line, "T1Lib Support")!==false)
$array["T1Lib Support"] = trim(str_replace("T1Lib Support", "", strip_tags($line)));
if(strpos($line, "GIF Read Support")!==false)
$array["GIF Read Support"] = trim(str_replace("GIF Read Support", "", strip_tags($line)));
if(strpos($line, "GIF Create Support")!==false)
$array["GIF Create Support"] = trim(str_replace("GIF Create Support", "", strip_tags($line)));
if(strpos($line, "GIF Support")!==false)
$gif_support = trim(str_replace("GIF Support", "", strip_tags($line)));
if(strpos($line, "JPG Support")!==false)
$array["JPG Support"] = trim(str_replace("JPG Support", "", strip_tags($line)));
if(strpos($line, "PNG Support")!==false)
$array["PNG Support"] = trim(str_replace("PNG Support", "", strip_tags($line)));
if(strpos($line, "WBMP Support")!==false)
$array["WBMP Support"] = trim(str_replace("WBMP Support", "", strip_tags($line)));
if(strpos($line, "XBM Support")!==false)
$array["XBM Support"] = trim(str_replace("XBM Support", "", strip_tags($line)));
}
if($gif_support==="enabled") {
$array["GIF Read Support"] = 1;
$array["GIF Create Support"] = 1;
}
if($array["FreeType Support"]==="enabled")
$array["FreeType Support"] = 1;
if($array["T1Lib Support"]==="enabled")
$array["T1Lib Support"] = 1;
if($array["GIF Read Support"]==="enabled")
$array["GIF Read Support"] = 1;
if($array["GIF Create Support"]==="enabled")
$array["GIF Create Support"] = 1;
if($array["JPG Support"]==="enabled")
$array["JPG Support"] = 1;
if($array["PNG Support"]==="enabled")
$array["PNG Support"] = 1;
if($array["WBMP Support"]==="enabled")
$array["WBMP Support"] = 1;
if($array["XBM Support"]==="enabled")
$array["XBM Support"] = 1;
return $array;
}
}
|
