Files
bm/public_html/public/cms/modules/imageblock.class.php
2025-09-24 13:26:28 +02:00

475 lines
13 KiB
PHP

<?php
/** Image Block
*
* @version 1.9.0
* @since 2007-04-16
* @author martin lenzelbauer
*/
class ImageBlock extends BuildingBlock{
var $file; //file name
var $caption; //caption
var $hyperlink; //hyperlink
var $thumb; //true, if a thumbnail should be generated
var $imgDir; //output directory for images
var $thumbDir; //output directory for thumbs
var $maxWidth;
var $maxHeight;
var $thumbWidth;
var $thumbHeight;
var $stretchThumb;//true: stretch thumb to fit size
//false: keep aspect ratio and clip original image
var $displayWidth;//max width to display image in cms
var $absoluteUrl;
/** C'tor
*/
//------------------------------------------------
function ImageBlock($id=0){
//------------------------------------------------
parent::BuildingBlock($id);
$this->displayWidth = 640;
$this->caption = "";
$this->hyperlink = "";
$this->setDirectories(IMG_DIR, THUMB_DIR);
$this->setSize();
$this->useThumbs(false);
$this->useAbsoluteUrl(false);
}
/** @see BuildingBlock::install()
*/
//-----------------------------------------------
function install(){
//-----------------------------------------------
$query = sprintf("CREATE TABLE IF NOT EXISTS bruckm_imageblock (
id INT not null AUTO_INCREMENT,
file VARCHAR(128) not null,
caption TEXT not null,
hyperlink TEXT not null,
PRIMARY KEY(id)
)");
$result = dbQuery($query);
}
/** @see BuildingBlock::load()
*/
//-------------------------------------------------
function load(){
//-------------------------------------------------
$query = sprintf("SELECT * FROM bruckm_imageblock WHERE id = %d", $this->id);
$result = dbQuery($query);
$line = mysqli_fetch_array($result, MYSQLI_ASSOC);
$this->file = $line['file'];
$this->caption = $line['caption'];
$this->hyperlink = $line['hyperlink'];
}
/** @see BuildingBlock::doSave()
*/
//-----------------------------------------------
function doSave(){
//-----------------------------------------------
$query = sprintf("UPDATE bruckm_imageblock SET file = %s, caption = %s, hyperlink = %s WHERE id = %d",
sqlstring($this->file),
sqlstring($this->caption),
sqlstring($this->hyperlink),
$this->id);
dbQuery($query);
}
/** @see BuildingBlock::doCreate()
*/
//-----------------------------------------------
function doCreate(){
//-----------------------------------------------
$query = sprintf("INSERT INTO bruckm_imageblock (file, caption, hyperlink) VALUES (%s, %s, %s)",
sqlstring($this->file),
sqlstring($this->caption),
sqlstring($this->hyperlink));
dbQuery($query);
return mysql_insert_id();
}
/** @see BuildingBlock::delete()
*/
//-------------------------------------------------
function delete(){
//-------------------------------------------------
$query = sprintf("DELETE FROM bruckm_imageblock WHERE id = %d", $this->id);
dbQuery($query);
@unlink($this->imgDir.$this->file);
@unlink($this->thumbDir.$this->file);
}
/** @see BuildingBlock::update()
*/
//-----------------------------------------------
function update(){
//-----------------------------------------------
if(isset($_FILES["imageblock_file".$this->id]) && $_FILES["imageblock_file".$this->id]['error'] == UPLOAD_ERR_OK){
$this->file = $this->findName($this->imgDir, $_FILES["imageblock_file".$this->id]['name']);
$this->uploadImage($_FILES["imageblock_file".$this->id]);
if($this->thumb){
$this->createThumbnail();
}
}
$this->caption = trim($_POST["imageblock_caption".$this->id]);
$this->hyperlink = trim($_POST["imageblock_hyperlink".$this->id]);
}
/** @see BuildingBlock::printContent()
*/
//-----------------------------------------------
function printContent($position){
//-----------------------------------------------
$t = new Template(CMS_TEMPLATE_DIR."imageblock.html");
$t->setVar("ID", $this->id);
$t->setVar("POSITION", $position);
$t->setVar("CAPTION", htmlspecialchars($this->caption));
$t->setVar("HYPERLINK", htmlspecialchars($this->hyperlink));
if(!empty($this->file) && file_exists($this->imgDir.$this->file)){
$t->setVar("PATH", $this->imgDir.$this->file);
$imgSize = getImageSize($this->imgDir.$this->file);
$width = $imgSize[0];
$height = $imgSize[1];
if($width > $this->displayWidth){
$height = round($height * ($this->displayWidth/$width));
$width = $this->displayWidth;
}
$t->setVar("WIDTH", $width);
$t->setVar("HEIGHT", $height);
$t->removeBlock("UPLOAD");
}
else{
$t->removeBlock("IMAGE");
}
return $t->toString();
}
/** @see BuildingBlock::publish()
*/
//----------------------------------------------
function publish(){
//----------------------------------------------
/*if(!file_exists($this->imgDir.$this->file)){
logError(3, "Image ".$this->imgDir.$this->file." doesn't exist", __FILE__, __LINE__);
return "";
}*/
$alt = htmlspecialchars($this->caption);
if(empty($alt)){
$alt = "unbenanntes Bild";
}
if($this->absoluteUrl){
$img = "<div><img src=\"http://www.bruckmuehle.at/newsletter/".$this->file."\" alt=\"$alt\" />";
}
else{
$img = "<div><img src=\"images/".$this->file."\" alt=\"$alt\" />";
}
if(empty($this->hyperlink)){
return $img."</div>";
}
else{
return "<a href=\"".$this->hyperlink."\" target=\"_blank\">$img</a></div>\n";
}
}
/** @see BuildingBlock::publishForNewsletter()
*/
//----------------------------------------------
function publishForNewsletter(){
//----------------------------------------------
$content = bbcode2html($this->content);
$p = new Template(NEWSLETTER_DIR . "subparts/image.html");
$p->setVar("SRC", $this->file);
$p->setVar("ALT", htmlspecialchars($this->caption));
return $p->toString();
}
// === ADDITIONAL METHODS ======================================================== //
/** uploads an image file
* @param file $_FILES file data
*/
//------------------------------------------------
function uploadImage($file){
//------------------------------------------------
$path = $this->imgDir.$this->file;
if(file_exists($path)){
@unlink($path);
}
//resize image
$imgSize = getImageSize($file['tmp_name']);
if($imgSize[0] > $this->maxWidth || $imgSize[1] > $this->maxHeight){
switch($imgSize[2]){
case 1: //gif
$original = imageCreateFromGif($file['tmp_name']);
break;
case 2: //jpg
$original = imageCreateFromJpeg($file['tmp_name']);
break;
case 3: //png
$original = imageCreateFromPng($file['tmp_name']);
break;
}
$origWidth = $imgSize[0];
$origHeight = $imgSize[1];
$width = $origWidth;
$height = $origHeight;
if($width > $this->maxWidth){
$fact = $this->maxWidth/$origWidth;
$width *= $fact;
$height *= $fact;
}
if($height > $this->maxHeight){
$fact = $this->maxHeight/$height;
$width *= $fact;
$height *= $fact;
}
$small = imageCreateTrueColor($width,$height);
imageCopyResampled($small, $original, 0, 0, 0, 0, $width, $height, $origWidth, $origHeight);
switch($imgSize[2]){
case 1:
if(!@imageGif($small, $path)){
logError(4, "Could not create gif image: $path", __FILE__, __LINE__);
return "";
}
break;
case 2:
if(!@imageJpeg($small, $path, 100)){
logError(4, "Could not create jpg image: $path", __FILE__, __LINE__);
return "";
}
break;
case 3:
if(!@imagePng($small, $path)){
logError(4, "Could not create png image: $path", __FILE__, __LINE__);
return "";
}
break;
}
imageDestroy($small);
imageDestroy($original);
@chmod($path, 0777);
}
else{
move_uploaded_file($file['tmp_name'], $path);
//copy($file['tmp_name'], $path);
@chmod($path, 0777);
}
}
/** creates a thumbnail from an existing imag
*/
//------------------------------------------------
function createThumbnail(){
//------------------------------------------------
$path = $this->thumbDir.$this->file;
$source = $this->imgDir.$this->file;
if(!file_exists($source)){
$this->addError("Thumbnail kann nicht erzeugt werden!");
return false;
}
$imgSize = getImageSize($source);
switch($imgSize[2]){
case 1: //gif
$original = imageCreateFromGif($source);
break;
case 2: //jpg
$original = imageCreateFromJpeg($source);
break;
case 3: //png
$original = imageCreateFromPng($source);
break;
}
$origWidth = $imgSize[0];
$origHeight = $imgSize[1];
$width = $this->thumbWidth;
$height = $this->thumbHeight;
$origX = 0;
$origY = 0;
//clip image
if(!$this->stretchThumb){
if($origWidth > $origHeight){
$origX = ($origWidth - $origHeight)/2;
$origWidth = $origHeight;
}
else{
$origY = ($origHeight - $origWidth)/2;
$origHeight = $origWidth;
}
}
$small = imageCreateTrueColor($width, $height);
imageCopyResampled($small, $original, 0, 0, $origX, $origY, $width, $height, $origWidth, $origHeight);
switch($imgSize[2]){
case 1:
imageGif($small, $path);
break;
case 2:
imageJpeg($small, $path, 100);
break;
case 3:
imagePng($small, $path);
break;
}
imageDestroy($small);
imageDestroy($original);
@chmod($path, 0777);
}
/** sets the image and thumb size
*/
//-----------------------------------------------
function setSize($maxW=580, $maxH=1000, $thumbW=50, $thumbH=50, $stretch=false){
//-----------------------------------------------
$this->maxWidth = $maxW;
$this->maxHeight = $maxH;
$this->thumbWidth = $thumbW;
$this->thumbHeight = $thumbH;
$this->stretchThumb = $stretch;
}
/** sets the output directories
*/
//-----------------------------------------------
function setDirectories($imgDir, $thumbDir){
//-----------------------------------------------
$this->imgDir = $imgDir;
$this->thumbDir = $thumbDir;
}
/** sets flag for creating thumbs
* @param useThumbs true to enable thumbs
* false to disable thumbs
*/
//----------------------------------------------
function useThumbs($useThumbs=true){
//----------------------------------------------
$this->thumb = $useThumbs;
}
/** sets flag for switching between relative paths and absolute url
* @param useAbsoluteUrl true to use absolute url
* false to use relative paths
*/
//---------------------------------------------
function useAbsoluteUrl($useAbsoluteUrl){
//---------------------------------------------
$this->absoluteUrl = $useAbsoluteUrl;
}
/** finds a path that does not exist
* @param dir target directory
* @param name name of the source image
* @return filename in the target directory that does not exist
*/
//-----------------------------------------------
function findName($dir, $name){
//-----------------------------------------------
$name = strtolower($name);
$name = str_replace("ä", "ae", $name);
$name = str_replace("ö", "oe", $name);
$name = str_replace("ü", "ue", $name);
$name = str_replace("ß", "sz", $name);
$name = ereg_replace("[^A-Za-z0-9\.-_]", "", $name);
if(!file_exists($dir.$name)){
return $name;
}
//extract file extension
$dot = strrpos($name, ".");
$ext = substr($name, $dot+1);
$name = substr($name, 0, $dot);
//add 3-digit number
$count = 1;
while(file_exists(sprintf("%s%s%03d.%s", $dir, $name, $count, $ext))){
$count++;
}
return sprintf("%s%03d.%s", $name, $count, $ext);
}
/** prints a thumbnail version of the image
* @return string
*/
//----------------------------------------------------
function printThumb(){
//----------------------------------------------------
$out = "";
if(!empty($this->file)){
if($this->thumb){
$out = "<img src=\"".$this->thumbDir.$this->file."\" alt=\"thumbnail\" ";
}
else{
$out = "<img src=\"".$this->imgDir.$this->file."\" alt=\"preview\" ";
}
$out .= "width=\"".$this->thumbWidth."\" height=\"".$this->thumbHeight."\" /> ";
}
return $out;
}
/** returns image description as xml
* @return xml string
*/
//---------------------------------------------------
function toXml(){
//---------------------------------------------------
$xml = sprintf("<image file=\"%s\" hyperlink=\"%s\"><![CDATA[%s]]></image>",
$this->file,
$this->hyperlink,
$this->caption);
return $xml;
}
/** @see BuildingBlock::publishForPdf()
*/
//----------------------------------------------
function publishForPdf($pdf){
//----------------------------------------------
$img = getImageSize(IMG_DIR.$this->file);
$mm = $img[0] / 72 * 25.4;
if ($mm > 190) {
$pdf->Image(IMG_DIR.$this->file, NULL, NULL, 190);
}
else {
$pdf->Image(IMG_DIR.$this->file);
}
$pdf->Ln();
$pdf->Ln();
}
};
?>