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chamilo-lms
mirror of https://github.com/chamilo/chamilo-lms/tree/1.11.x
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Added new functions to manage images in backend

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1.10.x
José Loguercio 9 years ago
parent 59f16b1638
commit fb78d0e4ed
2 changed files with 115 additions and 18 deletions
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  1. 90
      main/inc/lib/course.lib.php
  2. 43
      main/inc/lib/usermanager.lib.php

90
main/inc/lib/course.lib.php
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@ -3114,9 +3114,10 @@ class CourseManager
* @param string Course code
* @param string File name
* @param string The full system name of the image from which course picture will be created.
* @param string $cropParameters Optional string that contents "x,y,width,height" of a cropped image format
* @return bool Returns the resulting. In case of internal error or negative validation returns FALSE.
*/
public static function update_course_picture($course_code, $filename, $source_file = null)
public static function update_course_picture($course_code, $filename, $source_file = null, $cropParameters = null)
{
$course_info = api_get_course_info($course_code);
// course path
@ -3132,18 +3133,20 @@ class CourseManager
unlink($course_medium_image);
}
$my_course_image = new Image($source_file);
$result = $my_course_image->send_image($course_image, -1, 'png');
// Resize image to 100x85 (should be 85x85 but 100x85 visually gives
// better results for most images people put as course icon)
if ($result) {
$medium = new Image($course_image);
//$picture_infos = $medium->get_image_size();
$medium->resize(100, 85, 0, false);
$medium->send_image($store_path . '/course-pic85x85.png', -1, 'png');
}
return $result;
//Crop the image to adjust 4:3 ratio
$croppedImage = self::crop_image($source_file, $cropParameters);
$croppedPath = $croppedImage->image_wrapper->path;
//Resize the images in two formats
$medium = self::resize_picture($croppedPath, 85);
$normal = self::resize_picture($croppedPath, 300);
$medium->send_image($course_medium_image, -1, 'png');
$result = $normal->send_image($course_image, -1, 'png');
$result = $medium && $medium->send_image($course_medium_image, -1, 'png') &&
$normal && $normal->send_image($course_image, -1, 'png');
return $result ? $result : false;
}
/**
@ -5375,6 +5378,67 @@ class CourseManager
return $send_to;
}
/**
* Resize a picture
*
* @param string file picture
* @param int size in pixels
* @todo move this function somewhere else image.lib?
* @return obj image object
*/
public static function resize_picture($file, $max_size_for_picture)
{
$temp = false;
if (file_exists($file)) {
$temp = new Image($file);
$image_size = $temp->get_image_size($file);
$width = $image_size['width'];
$height = $image_size['height'];
if ($width >= $height) {
if ($width >= $max_size_for_picture) {
// scale height
$new_height = round($height * ($max_size_for_picture / $width));
$temp->resize($max_size_for_picture, $new_height, 0);
}
} else { // height > $width
if ($height >= $max_size_for_picture) {
// scale width
$new_width = round($width * ($max_size_for_picture / $height));
$temp->resize($new_width, $max_size_for_picture, 0);
}
}
}
return $temp;
}
/**
* Crop a Image
*
* @author José Loguercio <jose.loguercio@beeznest.com>
* @param string file picture
* @param string crop Parameters (x, y, width, height)
* @return obj image object
*/
public static function crop_image($file, $cropParameters)
{
$image = false;
if (file_exists($file)) {
$image = new Image($file);
$image_size = $image->get_image_size($file);
$src_width = $image_size['width'];
$src_height = $image_size['height'];
$cropParameters = explode(",", $cropParameters);
$x = intval($cropParameters[0]);
$y = intval($cropParameters[1]);
$width = intval($cropParameters[2]);
$height = intval($cropParameters[3]);
$image->crop($x, $y, $width, $height, $src_width, $src_height);
}
return $image;
}
/**
* this function shows the form for sending a message to a specific group or user.

43
main/inc/lib/usermanager.lib.php
Unescape View File

@ -1547,10 +1547,11 @@ class UserManager
* If an empty name is provided, then old user photos are deleted only,
* @see UserManager::delete_user_picture() as the prefered way for deletion.
* @param string $source_file The full system name of the image from which user photos will be created.
* @param string $cropParameters Optional string that contents "x,y,width,height" of a cropped image format
* @return string/bool Returns the resulting common file name of created images which usually should be stored in database.
* When deletion is requested returns empty string. In case of internal error or negative validation returns FALSE.
*/
public static function update_user_picture($user_id, $file = null, $source_file = null)
public static function update_user_picture($user_id, $file = null, $source_file = null, $cropParameters)
{
if (empty($user_id)) {
return false;
@ -1618,13 +1619,17 @@ class UserManager
$filename = $user_id.'_'.$filename;
}
//Crop the image to adjust 1:1 ratio
$croppedImage = self::crop_image($source_file, $cropParameters);
$croppedPath = $croppedImage->image_wrapper->path;
// Storing the new photos in 4 versions with various sizes.
$small = self::resize_picture($source_file, 22);
$medium = self::resize_picture($source_file, 85);
$normal = self::resize_picture($source_file, 200);
$small = self::resize_picture($croppedPath, 22);
$medium = self::resize_picture($croppedPath, 85);
$normal = self::resize_picture($croppedPath, 200);
$big = new Image($source_file); // This is the original picture.
$big = new Image($croppedPath); // This is the original picture.
$ok = $small && $small->send_image($path.'small_'.$filename) &&
$medium && $medium->send_image($path.'medium_'.$filename) &&
@ -3057,6 +3062,34 @@ class UserManager
}
return $temp;
}
/**
* Crop a Image
*
* @author José Loguercio <jose.loguercio@beeznest.com>
* @param string file picture
* @param string crop Parameters (x, y, width, height)
* @return obj image object
*/
public static function crop_image($file, $cropParameters)
{
$image = false;
if (file_exists($file)) {
$image = new Image($file);
$image_size = $image->get_image_size($file);
$src_width = $image_size['width'];
$src_height = $image_size['height'];
$cropParameters = explode(",", $cropParameters);
$x = intval($cropParameters[0]);
$y = intval($cropParameters[1]);
$width = intval($cropParameters[2]);
$height = intval($cropParameters[3]);
$image->crop($x, $y, $width, $height, $src_width, $src_height);
}
return $image;
}
/**
* @author Isaac flores <isaac.flores@dokeos.com>

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