@ -1,4 +1,4 @@
<?php // $Id: question.class.php 9665 2006-10-24 10:43:48Z elixir_inter $
<?php // $Id: question.class.php 10234 2006-11-28 13:43:34Z develop-it $
/*
==============================================================================
Dokeos - elearning and course management software
@ -80,15 +80,15 @@ class Question
*/
function read($id)
{
global $_course;
$TBL_EXERCICES = $_course['dbNameGlu'].'quiz';
$TBL_QUESTIONS = $_course['dbNameGlu'].'quiz_question';
$TBL_EXERCICE_QUESTION = $_course['dbNameGlu'].'quiz_rel_question';
$sql="SELECT question,description,ponderation,position,type,picture FROM `$TBL_QUESTIONS` WHERE id='$id'";
$result=api_sql_query($sql,__FILE__,__LINE__);
// if the question has been found
if($object=mysql_fetch_object($result))
{
@ -306,12 +306,100 @@ class Question
$Extension=$PictureName[sizeof($PictureName)-1];
$this->picture='quiz-'.$this->id.'.'.$Extension;
return move_uploaded_file($Picture,$picturePath.'/'.$this->picture);
return move_uploaded_file($Picture,$picturePath.'/'.$this->picture)?true:false ;
}
return false;
}
/**
* Resizes a picture || Warning!: can only be called after uploadPicture, or if picture is already available in object.
*
* @author - Toon Keppens
* @param - string $Dimension - Resizing happens proportional according to given dimension: height|width|any
* @param - integer $Max - Maximum size
* @return - boolean - true if success, false if failed
*/
function resizePicture($Dimension, $Max)
{
global $picturePath;
// if the question has an ID
if($this->id)
{
// Get dimensions from current image.
$current_img = imagecreatefromjpeg($picturePath.'/'.$this->picture);
$current_image_size = getimagesize($picturePath.'/'.$this->picture);
$current_height = imagesy($current_img);
$current_width = imagesx($current_img);
if($current_image_size[0] < $Max & & $current_image_size[1] < $Max)
return true;
elseif($current_height == "")
return false;
// Resize according to height.
if ($Dimension == "height")
{
$resize_scale = $current_height / $Max;
$new_height = $Max;
$new_width = ceil($current_width / $resize_scale);
}
// Resize according to width
if ($Dimension == "width")
{
$resize_scale = $current_width / $Max;
$new_width = $Max;
$new_height = ceil($current_height / $resize_scale);
}
// Resize according to height or width, both should not be larger than $Max after resizing.
if ($Dimension == "any")
{
if ($current_height > $current_width || $current_height == $current_width)
{
$resize_scale = $current_height / $Max;
$new_height = $Max;
$new_width = ceil($current_width / $resize_scale);
}
if ($current_height < $current_width)
{
$resize_scale = $current_width / $Max;
$new_width = $Max;
$new_height = ceil($current_height / $resize_scale);
}
}
// Create new image
$new_img = imagecreatetruecolor($new_width, $new_height);
$bgColor = imagecolorallocate($new_img, 255,255,255);
imagefill($new_img , 0,0 , $bgColor);
// Resize image
imagecopyresized($new_img, $current_img, 0, 0, 0, 0, $new_width, $new_height, $current_width, $current_height);
// Write image to file
$result = imagejpeg($new_img, $picturePath.'/'.$this->picture, 100);
// Delete temperory images, clear memory
imagedestroy($current_img);
imagedestroy($new_img);
if ($result)
{
return true;
}
else
{
return false;
}
}
}
/**
* deletes the picture
@ -427,7 +515,7 @@ class Question
*/
function save($exerciseId=0)
{
global $TBL_QUESTIONS;
global $TBL_QUESTIONS, $_course ;
$id=$this->id;
$question=addslashes($this->question);
@ -448,8 +536,16 @@ class Question
{
$sql="INSERT INTO `$TBL_QUESTIONS`(question,description,ponderation,position,type,picture) VALUES('$question','$description','$weighting','$position','$type','$picture')";
api_sql_query($sql,__FILE__,__LINE__);
$this->id=mysql_insert_id();
// If hotspot, create first answer
if ($type == HOT_SPOT || $type == HOT_SPOT_ORDER) {
$TBL_ANSWERS = $_course['dbNameGlu'].'quiz_answer';
$sql="INSERT INTO `$TBL_ANSWERS` (`id` , `question_id` , `answer` , `correct` , `comment` , `ponderation` , `position` , `hotspot_coordinates` , `hotspot_type` ) VALUES ('1', '$this->id', '', NULL , '', NULL , '1', '0;0|0|0', 'square')";
api_sql_query($sql,__FILE__,__LINE__);
}
}
// if the question is created in an exercise
Luk Vanlanduyt
18 years ago