oxutilspic.php

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<?php

require_once getShopBasePath() . "core/utils/oxpicgenerator.php";

class oxUtilsPic extends oxSuperCfg
{
    protected $_aImageTypes = array("GIF" => IMAGETYPE_GIF, "JPG" => IMAGETYPE_JPEG, "PNG" => IMAGETYPE_PNG, "JPEG" => IMAGETYPE_JPEG);

    private static $_instance = null;

    public static function getInstance()
    {
        // disable caching for test modules
        if ( defined( 'OXID_PHP_UNIT' ) ) {
            self::$_instance = modInstances::getMod( __CLASS__ );
        }

        if ( !self::$_instance instanceof oxUtilsPic ) {


            self::$_instance = oxNew( 'oxUtilsPic' );

            if ( defined( 'OXID_PHP_UNIT' ) ) {
                modInstances::addMod( __CLASS__, self::$_instance);
            }
        }
        return self::$_instance;
    }


    public function resizeImage( $sSrc, $sTarget, $iDesiredWidth, $iDesiredHeight )
    {
        $blResize = false;

        // use this GD Version
        if ( ( $iUseGDVersion = getGdVersion() ) && function_exists( 'imagecreate' ) &&
             file_exists( $sSrc ) && ( $aImageInfo = @getimagesize( $sSrc ) ) ) {

            $myConfig = $this->getConfig();
            list( $iWidth, $iHeight ) = calcImageSize( $iDesiredWidth, $iDesiredHeight, $aImageInfo[0], $aImageInfo[1] );
            $blResize = $this->_resize( $aImageInfo, $sSrc, null, $sTarget, $iWidth, $iHeight, $iUseGDVersion, $myConfig->getConfigParam( 'blDisableTouch' ), $myConfig->getConfigParam( 'sDefaultImageQuality' ) );
        }
        return $blResize;
    }


    public function safePictureDelete( $sPicName, $sAbsDynImageDir, $sTable, $sField )
    {
        $blDelete = false;
        if ( $this->_isPicDeletable( $sPicName, $sTable, $sField ) ) {
            $blDelete = $this->_deletePicture( $sPicName, $sAbsDynImageDir );
        }
        return $blDelete;
    }

    protected function _deletePicture( $sPicName, $sAbsDynImageDir )
    {
        $blDeleted = false;
        $myConfig  = $this->getConfig();

        if ( !$myConfig->isDemoShop() && ( strpos( $sPicName, 'nopic.jpg' ) === false ||
             strpos( $sPicName, 'nopic_ico.jpg' ) === false ) ) {

            $sFile = "$sAbsDynImageDir/$sPicName";

            if ( file_exists( $sFile ) && is_file( $sFile ) ) {
                $blDeleted = unlink( $sFile );
            }

            if ( !$myConfig->getConfigParam( 'sAltImageUrl' ) ) {
                // deleting various size generated images
                $sGenPath = str_replace( '/master/', '/generated/', $sAbsDynImageDir );
                $aFiles = glob( "{$sGenPath}*/{$sPicName}" );
                if ( is_array($aFiles) ) {
                    foreach ( $aFiles as $sFile ) {
                        $blDeleted = unlink( $sFile );
                    }
                }
            }
        }
        return $blDeleted;
    }


    protected function _isPicDeletable( $sPicName, $sTable, $sField )
    {
        if ( !$sPicName || strpos( $sPicName, 'nopic.jpg' ) !== false || strpos( $sPicName, 'nopic_ico.jpg' ) !== false ) {
            return false;
        }

        $oDb = oxDb::getDb();
        $iCountUsed = $oDb->getOne( "select count(*) from $sTable where $sField = ".$oDb->quote( $sPicName ). " group by $sField ", false, false);
        return $iCountUsed > 1 ? false : true;
    }

    public function overwritePic( $oObject, $sPicTable, $sPicField, $sPicType, $sPicDir, $aParams, $sAbsDynImageDir )
    {
        $blDelete = false;
        $sPic = $sPicTable.'__'.$sPicField;
        if ( isset( $oObject->{$sPic} ) &&
             ( $_FILES['myfile']['size'][$sPicType.'@'.$sPic] > 0 || $aParams[$sPic] != $oObject->{$sPic}->value ) ) {

            $sImgDir = $sAbsDynImageDir . oxUtilsFile::getInstance()->getImageDirByType($sPicType);
            $blDelete = $this->safePictureDelete($oObject->{$sPic}->value, $sImgDir, $sPicTable, $sPicField );
        }

        return $blDelete;
    }

    protected function _resizeGif( $sSrc, $sTarget, $iNewWidth, $iNewHeight, $iOriginalWidth, $iOriginalHeigth, $iGDVer, $blDisableTouch )
    {
        return resizeGif( $sSrc, $sTarget, $iNewWidth, $iNewHeight, $iOriginalWidth, $iOriginalHeigth, $iGDVer, $blDisableTouch );
    }

    protected function _resize( $aImageInfo, $sSrc, $hDestinationImage, $sTarget, $iNewWidth, $iNewHeight, $iGdVer, $blDisableTouch, $iDefQuality )
    {
        startProfile("PICTURE_RESIZE");

        $blSuccess = false;
        switch ( $aImageInfo[2] ) { //Image type
            case ( $this->_aImageTypes["GIF"] ):
                //php does not process gifs until 7th July 2004 (see lzh licensing)
                if ( function_exists( "imagegif" ) ) {
                    $blSuccess = resizeGif( $sSrc, $sTarget, $iNewWidth, $iNewHeight, $aImageInfo[0], $aImageInfo[1], $iGdVer );
                }
                break;
            case ( $this->_aImageTypes["JPEG"] ):
            case ( $this->_aImageTypes["JPG"] ):
                $blSuccess = resizeJpeg( $sSrc, $sTarget, $iNewWidth, $iNewHeight, $aImageInfo, $iGdVer, $hDestinationImage, $iDefQuality );
                break;
            case ( $this->_aImageTypes["PNG"] ):
                $blSuccess = resizePng( $sSrc, $sTarget, $iNewWidth, $iNewHeight, $aImageInfo, $iGdVer, $hDestinationImage );
                break;
        }

        if ( $blSuccess && !$blDisableTouch ) {
            @touch( $sTarget );
        }

        stopProfile("PICTURE_RESIZE");

        return $blSuccess;
    }

    protected function _copyAlteredImage( $sDestinationImage, $sSourceImage, $iNewWidth, $iNewHeight, $aImageInfo, $sTarget, $iGdVer, $blDisableTouch )
    {
        $blSuccess = copyAlteredImage( $sDestinationImage, $sSourceImage, $iNewWidth, $iNewHeight, $aImageInfo, $sTarget, $iGdVer );
        if ( !$blDisableTouch && $blSuccess ) {
            @touch( $sTarget );
        }
        return $blSuccess;
    }

}