Last commit: Sun Jan 29 00:20:21 2023 +0100	Jan Dankert	New node type "Script".


      <?php
      namespace cms\model;
      // OpenRat Content Management System
      // Copyright (C) 2002-2012 Jan Dankert, cms@jandankert.de
      //
      // This program is free software; you can redistribute it and/or
      // modify it under the terms of the GNU General Public License
      // as published by the Free Software Foundation; either version 2
      // of the License, or (at your option) any later version.
     //
     // This program is distributed in the hope that it will be useful,
     // but WITHOUT ANY WARRANTY; without even the implied warranty of
     // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     // GNU General Public License for more details.
     //
     // You should have received a copy of the GNU General Public License
     // along with this program; if not, write to the Free Software
     // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     use cms\base\Configuration;
     
     
     /**
      * Datei.
      *
      * @author Jan Dankert
      * @package openrat.objects
      */
     class Image extends File
     {
     	/**
     	 * Breite eines Bildes. Ist nur verfuegbar, wenn vorher
     	 * #getImageSize() aufgerufen wurde.
     	 */
     	var $width         = null;
     	
     	/**
     	 * Hoehe eines Bildes. Ist nur verfuegbar, wenn vorher
     	 * #getImageSize() aufgerufen wurde.
     	 */
     	var $height        = null;
     	
     
     	/**
     	 * Konstruktor
     	 *
     	 * @param Objekt-Id
     	 */
     	function __construct( $objectid='' )
     	{
     	    parent::__construct($objectid);
     
             $this->isImage = true;
             $this->isFile  = false;
     		$this->typeid = BaseObject::TYPEID_FILE;
     	}
     
     
     
     
     	/**
     	 * Ermittelt Breite und H�he des Bildes.<br>
     	 * Die Werte lassen sich anschlie�end �ber die Eigenschaften "width" und "height" ermitteln.
     	 */
     	function getImageSize()
     	{
     		if	( is_null($this->width) )
     		{
     			$this->write(); // Datei schreiben
     			
     			// Bildinformationen ermitteln
     			$size = getimagesize( $this->getCache()->getFilename() );
     	
     			// Breite und Hoehe des aktuellen Bildes	 
     			$this->width  = $size[0]; 
     			$this->height = $size[1];
     		}
     	}
     
     
     
     	/**
     	 * Veraendert die Bildgroesse eines Bildes
     	 *
     	 * Diese Methode sollte natuerlich nur bei Bildern ausgefuehrt werden.
     	 *
     	 * @param int Neue Breite
     	 * @param int Neue Hoehe
     	 * @param float Bildgr��enfaktor
     	 * @param int Altes Format als Integer-Konstante IMG_xxx
     	 * @param int Neues Format als Integer-Konstante IMG_xxx
     	 * @param int Jpeg-Qualitaet (sofern neues Format = Jpeg)
     	 */
     	function imageResize( $newWidth,$newHeight,$factor,$oldformat,$newformat,$jpegquality )
     	{
     		$this->write(); // Datei schreiben
     		
     		// Bildinformationen ermitteln
     		$size = getimagesize( $this->getCache()->getFilename() );
     
    		// Breite und Hoehe des aktuellen Bildes	 
    		$oldWidth  = $size[0]; 
    		$oldHeight = $size[1];
    		$aspectRatio = $oldHeight / $oldWidth; // Seitenverhaeltnis
    
    		// Wenn Breite und Hoehe fehlen, dann Bildgroesse beibehalten
    		if	( $newWidth == 0 && $newHeight == 0)
    		{
    			if	( $factor != 0 && $factor != 1 )
    			{
    				$newWidth  = $oldWidth  * $factor; 
    				$newHeight = $oldHeight * $factor;
    				$resizing = true;
    			}
    			else
    			{
    				$newWidth  = $oldWidth; 
    				$newHeight = $oldHeight;
    				$resizing = false;
    			}
    		}
    		else
    		{
    			$resizing = true;
    		}
    
    		// Wenn nur Breite oder Hoehe angegeben ist, dann
    		// das Seitenverhaeltnis beibehalten
    		if	( $newWidth == 0 )
    			$newWidth = $newHeight / $aspectRatio; 
    		
    		if	( $newHeight == 0 )
    			$newHeight = $newWidth * $aspectRatio; 
    
    
    		switch( $oldformat )
    		{
    			case IMG_GIF: // GIF
    
    				$oldImage = ImageCreateFromGIF( $this->tmpfile ); 
    				break;
    
    			case IMG_JPG: // JPEG
    
    				$oldImage = ImageCreateFromJPEG($this->tmpfile);
    				break;
    
    			case IMG_PNG: // PNG
    
    				$oldImage = imagecreatefrompng($this->tmpfile);
    				break;
    
    			default:
    				throw new \LogicException('unsupported image format "'.$this->extension.'", cannot load image. resize failed');
    		}
    
    		// Ab Version 2 der GD-Bibliothek sind TrueColor-Umwandlungen moeglich.
     		$hasTrueColor = Configuration::get(['image','truecolor']);
    
    		switch( $newformat )
    		{
    			case IMG_GIF: // GIF
    
    				if	( $resizing )
    				{
    					$newImage = ImageCreate($newWidth,$newHeight); 
    					ImageCopyResized($newImage,$oldImage,0,0,0,0,$newWidth,
    						$newHeight,$oldWidth,$oldHeight); 
    				}
    				else
    				{
    					$newImage = &$oldImage;
    				} 
    
    				ImageGIF($newImage, $this->getCache()->getFilename() );
    				$this->extension = 'gif';
    
    				break;
    
    			case IMG_JPG: // JPEG
    
    				if	( !$resizing )
    				{
    					$newImage = &$oldImage;
    				} 
    				elseif   ( $hasTrueColor )
    				{
    					// Verwende TrueColor (GD2)
    					$newImage = imageCreateTrueColor( $newWidth,$newHeight );
    					ImageCopyResampled($newImage,$oldImage,0,0,0,0,$newWidth,
    					$newHeight,$oldWidth,$oldHeight);
    				}
    				else
    				{
    					// GD Version 1.x unterstuetzt kein TrueColor
    					$newImage = ImageCreate($newWidth,$newHeight);
    	
    					ImageCopyResized($newImage,$oldImage,0,0,0,0,$newWidth,
    					$newHeight,$oldWidth,$oldHeight);
    				}
    	
    				ImageJPEG($newImage, $this->tmpfile,$jpegquality ); 
    				$this->extension = 'jpeg';
    
    				break;
    
    			case IMG_PNG: // PNG
    
    				if	( !$resizing )
    				{
    					$newImage = &$oldImage;
    				} 
    				elseif   ( $hasTrueColor )
    				{
    					// Verwende TrueColor (GD2)
    					$newImage = imageCreateTrueColor( $newWidth,$newHeight );
    		
    					ImageCopyResampled($newImage,$oldImage,0,0,0,0,$newWidth,
    					$newHeight,$oldWidth,$oldHeight); 
    				}
    				else
    				{
    					// GD Version 1.x unterstuetzt kein TrueColor
    					$newImage = ImageCreate($newWidth,$newHeight);
    		
    					ImageCopyResized($newImage,$oldImage,0,0,0,0,$newWidth,
    					$newHeight,$oldWidth,$oldHeight); 
    				}
    		
    				imagepng( $newImage,$this->getCache()->getFilename() );
    				$this->extension = 'png';
    				
    				break;
    				
    			default:
    				throw new \LogicException('unsupported image format "'.$newformat.'", cannot resize');
    		} 
    
    		$this->getCache()->invalidate();
    
    		imagedestroy( $oldImage );
    		//imagedestroy( $newImage );
    	}
    
    }


Download modules/cms/model/Image.class.php

History
Sun, 29 Jan 2023 00:20:21 +0100	Jan Dankert	New node type "Script".
Wed, 18 Nov 2020 01:46:36 +0100	Jan Dankert	Refactoring of model classes: New method persist() and some other cleanups.
Sun, 1 Nov 2020 03:08:55 +0100	Jan Dankert	Replaced the calls to "Configuration::rawConfig()" with the OO style calls; Cleanup LoginAction.
Sat, 26 Sep 2020 10:32:02 +0200	Jan Dankert	Refactoring: No global $conf array any more.
Sun, 23 Feb 2020 04:01:30 +0100	Jan Dankert	Refactoring with Namespaces for the cms modules, part 1: moving.