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  Classes of Thomas Uttenthaler  >  phpRealGallery  >  class.gallery.php  >  Download  
File: class.gallery.php
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Description: The Main Class with Documentation
Class: phpRealGallery
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Date: 13 years ago
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<?php 

/*
	phpRealGallery - A class for displaying images sorted in galleries
	Version 0.1 - 14/07/2001
	Thomas Uttenthaler (tom@uttenthaler.at || IRCnet->#webmasters.at->z3non)
	
    Requirements:
	HTTP-Server (tested with Apache)
	PHP (tested with PHP 4)
    SQL-Server (tested with Postgre 7.0)
    a browser with graphic-capalities :-)
	
	Credits:
	PHPLib by Boris Erdmann, boris@erdmann.com, Kristian Köhntopp, kk@netuse.de and Sascha Schumann, sascha@schumann.cx
	PHP_Thumbnail by Ryan Flynn (ryan@ryanflynn)
	Form class (forms.php) by Manuel Lemos (mlemos@acm.org)
	
	Download:
	You can get the latest version from 
	http://www.uttenthaler.at
	http://phpclasses.upperdesign.com
	
	ChangeLog:
	Version 0.1 - 14/07/2001 + Initial release
	
	License:
	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
	
	Installation:
		
		1) Unpack the package and create a database
		2) Create a Database-User (e.g. phpRealGallery)
		3) Create the tables "galleries" and "images". I have included a dump-file for Postgre (pg.sql).
		   
		   galleries(gid(pkey), title, text)
		   images(iid(pkey), gid, file, title, text, tech, size, date, price)
		   
		4) Grant the select-right for these tables to the DB-User (the pg-dump-file does it for phpRealGallery)
		5) Put data into the tables and upload the images
		6) Set the appropriate values for the DB-Connection in prepend.php3 (I have included db_pgsql.inc, db_mysql.inc and db_odbc.inc,
			if you have nstallled the PHP Base Library on your Server, you also can use this one. Therefore copy the prepend.php3 and 
			local inc into your directory, set the right include-path and db_* file in prepend.php3 and configure your database-connection
			in local.inc.
			
		6) Read the Documentation
		
	Documentation:
		
		Description:
		phpRealGallery is a gallery-tool with a Database-Backend wich can display several galleries, 
		thumbnails of each gallery and the images in real-size with several information-fields (title, text, size, tech, date, price).
		The class should be embedded in the body-tag of an HTML-File. It produces valid XHTML 1.0 code.
		
		Methods:
			
			main
				Synopsis
				$error=$gallery-object->main()
				
				Purpose
				Show overview of galleries
			
			show_gallery
				Synopsis
				$error=$gallery-object->show_gallery($gid)
				
				Purpose
				Show thumbnails of specified gallery
				
				Arguments
				$gid
				The ID of the selected gallery
			
			show_image
				Synopsis
				$error=$gallery-object->show_image($iid)
				
				Purpose
				Show specified image in real-size with additional information
				
				Arguments
				$iid
				The ID of the selected image
			
		Properties:
			img_path
				Synopsis
				$gallery_object->img_path=string
				
				Purpose
				Specifies the directory where the images are stored
				
			thumbnails_per_row
				Synopsis
				$gallery_object->thumbnails_per_row=int
				
				Purpose
				Specifies the number of thumbnails per row
				
			file_name
				Synopsis
				$gallery_object->file_name=basename($PHP_SELF);
				
				Purpose
				Specifies the Name of the gallery file
				
			thumbnail_size
				Synopsis
				$gallery_object->thumbnail_size=int
				
				Purpose
				Specifies the Thumbnail-Size in percent of the original size
				
		Example Usage:
		
		require("./class.gallery.php");
		$g=new Gallery;
		
		$g->img_path="./img/gallery/"; (can also be an absolute path, or a ftp- or http-server)
		$g->thumbnails_per_row=3;
		$g->file_name=basename($PHP_SELF);
		$g->thumbnail_size=25;
		IF($show_gallery) $g->show_gallery($show_gallery);
		ELSEIF($show_image) $g->show_image($show_image);
		ELSE $g->main();
		
		The Design can be changed by CSS with the following classes:
		
		a.thumbnail
		a.nav_button
		table.thumbnail
		tr.thumbnail
		td.thumbnail
		img.nav_button
		img.thumbnail
		img.gallery
		
		Graphic-Navigation-Buttons:
		Put the following files in the image-directory:
		left.gif	// for link-arrows
		left2.gif // for non-link-arrows
		right.gif
		right2.gif
		up.gif
		
	Todo:
	+ Storage of Images in Database ?
	+ Admin-Interface with File-Upload
	+ Real Thumbnail-Generation for jpg, gif and png (Either gif or png, depends on GD-Version)
	+ Multi-Language Support
*/

require('./include/prepend.php3');

require("./include/class.thumbnail.php");

class Gallery extends DB_gallery{
    var $img_path;
	var $thumbnails_per_row;
	var $thumbnail_size; //in percent of the original size
	var $file_name;
	
	function gallery() { //Konstruktor
		$db=new DB_Gallery;
		
		if($db->Error!="") {
			echo "<p style='color:red;'>Keine Verbindung zur Datenbank!<br />
			FEHLER!<br />".$error."</p>";
		exit;
		}
	}
	
	function show_gallery($show_gallery){ //Shows thumbnails of a gallery
		
		$db=new DB_Gallery;
		$db2=new DB_Gallery;
		
		
		$t=new PHP_Thumbnail($this->thumbnail_size, $this->thumbnail_size, '%');  //set to 25% of default size
		
		$query="SELECT * from galleries WHERE gid='".$show_gallery."'";
		$result=$db->query($query);
		$db->next_record();
		$title=$db->f("title");
		$text=$db->f("text");
		
		if(file_exists($this->img_path."up.gif")):
			$size_up=GetImageSize($this->img_path."up.gif");
			$up="<img class='nav_button' src='".$this->img_path."up.gif' ".$size_up[3]." alt='Up' border='0' />";
		else:
			$up="Up";
		endif;
		
		echo "<a class='nav_button' href='./".$this->file_name."'>".$up."</a><br /><br />\n";
		echo "<h2>".$title."</h2>\n";
		
		IF($text) echo $text."<br />\n";
		echo "<table class='thumbnail'><tr class='thumbnail'>\n";
		
		$query="SELECT * FROM images WHERE gid='".$show_gallery."' ORDER BY iid";
		$result=$db->query($query);
		$i=0;
		WHILE($db->next_record()):
		    #$dir=opendir($img_path);
			$iid=$db->f("iid");
			$file=$db->f("file");
			$img=$this->img_path.$file;
			$title=$db->f("title");
			
			if(file_exists($this->img_path.$file)):
				$size=GetImageSize($this->img_path.$file);
				$file_size=filesize($this->img_path.$file);
				$file_size=round($file_size/1024);
			endif;
			
			if($title) $alt_string=$title;
			$alt_string=$alt_sting.$title.", ".$size[0]." x ".$size[1].", ".$file_size." kb";
			
			echo "<td class='thumbnail'><a  class='thumbnail' href='./".$this->file_name."?show_image=".$iid."' title='".$alt_string."'>";
	        $t->show($img, "class='thumbnail' alt='".$alt_string."'");
            echo "</a></td>\n";
			
			$i++;
			
			if($i==$this->thumbnails_per_row):
				echo "</tr>\n<tr>\n";
				$i=0;
			endif;
	    ENDWHILE;
		
		echo "</tr></table>\n";
	} //end of function show_gallery
	
	function show_image($show_image){ //Shows a picture in real-size and data
		
		$db=new DB_Gallery;
		$db2=new DB_Gallery;
		
		$query="SELECT * FROM images WHERE iid='".$show_image."'";
		$result=$db->query($query);
		$db->next_record();
		
		$file=$db->f("file");
		$title=$db->f("title");
		$text=$db->f("text");
		$gid=$db->f("gid");
		
		$tech=$db->f("tech");
		$size=$db->f("size");
		$price=$db->f("price");
		$date=$db->f("date");
		
		$img=$this->img_path.$file;
		
		$query="SELECT iid FROM images WHERE gid='".$gid."' ORDER BY iid";
		$result=$db->query($query);
		WHILE($db->next_record()):
			$prev_iid_tmp=$iid;
			$iid=$db->f("iid");
			
			IF($next_id==1) BREAK;
			IF($iid==$show_image):
				$next_id=1;
				$prev_iid=$prev_iid_tmp;
			ENDIF;
			IF(!$prev_iid AND $iid==$show_image) $first=1;
		ENDWHILE;
		
		IF($iid!=$show_image) $next_iid=$iid; //IF $show_image is not the last in the gallery ..
		
		if(file_exists($this->img_path."left.gif")):
			$size_left=GetImageSize($this->img_path."left.gif");
			$left="<img class='nav_button' src='".$this->img_path."left.gif' ".$size_left[3]." alt='&lt;&lt;' border='0' />";
		else:
			$left="<<";
		endif;
		
		if(file_exists($this->img_path."left2.gif")):
			$size_left2=GetImageSize($this->img_path."left2.gif");
			$left2="<img class='nav_button' src='".$this->img_path."left2.gif' ".$size_left2[3]." alt='' border='0' />";
		else:
			$left2="&nbsp;&nbsp;";
		endif;
		
		if(file_exists($this->img_path."right.gif")):
			$size_right=GetImageSize($this->img_path."right.gif");
			$right="<img class='nav_button' src='".$this->img_path."right.gif' ".$size_right[3]." alt='&gt;&gt;' border='0' />";
		else:
			$right=">>";
		endif;
		
		if(file_exists($this->img_path."right2.gif")):
			$size_right2=GetImageSize($this->img_path."right2.gif");
			$right2="<img class='nav_button' src='".$this->img_path."right2.gif' ".$size_right2[3]." alt='' border='0' />";
		else:
			$right2="&nbsp;&nbsp;&nbsp;";
		endif;
		
		if(file_exists($this->img_path."up.gif")):
			$size_up=GetImageSize($this->img_path."up.gif");
			$up="<img src='".$this->img_path."up.gif' ".$size_up[3]." alt='Up' border='0' />";
		else:
			$up="Up";
		endif;
		
		IF(!$first)	$nav_code="<a class='nav_button' href='./".$this->file_name."?show_image=".$prev_iid."'>".$left."</a>&nbsp;\n";
		ELSE $nav_code=$left2."&nbsp;\n";
		IF($next_iid) $nav_code=$nav_code."<a class='nav_button' href='./".$this->file_name."?show_image=".$next_iid."'>".$right."</a>&nbsp;\n";
		ELSE $nav_code=$nav_code.$right2."&nbsp;\n";
		$nav_code=$nav_code."<a class='nav_button' href='./".$this->file_name."?show_gallery=".$gid."'>".$up."</a>\n";
		
		echo $nav_code;
		
		echo "<br /><br /><h2>".$title."</h2>\n";
		
		echo "<img src='".$img."' class='gallery' alt='".$title."'><br />\n";
		
		if($tech) echo "<p><i>Technik:</i><br />".$tech."</p>\n";
		if($size) echo "<p><i>Größe:</i><br />".$size."</p>\n"
		;
		if($text) echo "<p>".$text."</p>\n";
		if($date) echo "<p><i>Datum:</i><br />".$date."</p>\n";
		if($price) echo "<p><i>Preis:</i><br />".$price."</p>\n";
		
		echo "<br />";
		echo $nav_code;
		echo "<br />";
		
	} //end of function show_image
	
	function main() { //shows gallery-overview
		
		$db=new DB_Gallery;
		$db2=new DB_Gallery;
		echo "<h2>Bildergalerien</h2>";
		
		$query="SELECT * from galleries";
		$result=$db->query($query);
		WHILE($db->next_record()):
			$gid=$db->f("gid");
			$title=$db->f("title");
			
			$query="SELECT count(iid) as count FROM images WHERE gid='".$gid."'";
			$result=$db2->query($query);
			$db2->next_record();
			$pcount=$db2->f("count");
			
			echo "<h3><a href='./".$this->file_name."?show_gallery=".$gid."'>".$title."</a></h3>\n
				  <p>".$pcount." Bilder</p>\n<hr />\n";
		ENDWHILE;
	} //end of function main
	
} //end of class gallery



?>