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+--- Thread: The problem with image_lib (/showthread.php?tid=14542)
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The problem with image_lib - El Forum - 01-06-2009
[eluser]codeDeveloper[/eluser]
Hi,
I use image_lib to create preview image.
Code:
$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = 'path';
$config['width'] = 640;
$config['height'] = 480;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
$this->image_lib->clear();If the image is less than 640 * 480, it stretches to 640 * 480, how fix this problem?
Unfortunately, the solutions are not found in the documentation.
The problem with image_lib - El Forum - 01-06-2009
[eluser]dmorin[/eluser]
If you have $config['maintain_ratio'] = TRUE; then the image library should never stretch the original image to fit a new aspect ratio. Can you also post the actual full code you're using so we can attempt to recreate the problem.
The problem with image_lib - El Forum - 01-07-2009
[eluser]codeDeveloper[/eluser]
Spread full code
Controller
Code:
<?php
class resize extends Controller {
function __construct() {
parent::Controller();
}
function index() {
$this->load->view ('resize/index');
}
function create () {
$this->load->model ('resizemodel', 'model');
$this->model->createAvatar('/dev.icq-mobi.ru/www/i/download.jpg');
$this->load->view('resize/create');
}
}
?>Model
Code:
<?php
class resizemodel extends Model {
public function __construct() {
parent::Model();
}
public function createAvatar ($fileName) {
$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = '/dev.icq-mobi.ru/www/upload/big.jpg';
$config['width'] = 640;
$config['height'] = 480;
$this->load->library('image_lib', $config);
$this->image_lib->resize();
$this->image_lib->clear();
$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = '/dev.icq-mobi.ru/www/upload/small.jpg';
$config['width'] = 120;
$config['height'] = 80;
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
}
?>Views think you do not need to spread
Example: http://dev.icq-mobi.ru/resize/
The problem with image_lib - El Forum - 01-07-2009
[eluser]dmorin[/eluser]
Thanks. What are the dimensions of the original image you're using and what version of CI?
The problem with image_lib - El Forum - 01-07-2009
[eluser]codeDeveloper[/eluser]
Please see the example that I gave http://dev.icq-mobi.ru/resize/ there is an image 16 * 16 and you can see that it stretches.
Using CodeIgniter 1.7
The problem with image_lib - El Forum - 01-07-2009
[eluser]srisa[/eluser]
From what I understand of Image_lib library, images do stretch. And link provided by you is a working example of that. If you have access to the dimensions of the image beforehand , ensure that they are not less than 640/480. Or you can tinker with Image_lib library, orig_width and orig_height variables store the width and height of the original image.
The problem with image_lib - El Forum - 01-07-2009
[eluser]dmorin[/eluser]
Not sure I understand. It get's larger, but it's not stretching it to 640 * 480 as you originally said. If you're resizing it, of course it's going to be larger!
Are you just wondering how to prevent the image from being enlarged?
The problem with image_lib - El Forum - 01-07-2009
[eluser]dmorin[/eluser]
try
Code:
<?php
class resizemodel extends Model {
public function __construct() {
parent::Model();
}
public function createAvatar ($fileName) {
$this->load->library('image_lib');
$big_img = '/dev.icq-mobi.ru/www/upload/big.jpg';
$small_img = '/dev.icq-mobi.ru/www/upload/small.jpg';
list($width, $height, $type, $attr) = getimagesize($fileName);
if ($width > 640 OR $height > 480)
{
$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = $big_img;
$config['width'] = 640;
$config['height'] = 480;
$this->image_lib->initialize($config);
$this->image_lib->resize();
$this->image_lib->clear();
}
else
{
copy($fileName, $big_img);
}
if ($width > 120 OR $height > 80)
{
$config['image_library'] = 'gd2';
$config['source_image'] = $fileName;
$config['maintain_ratio'] = TRUE;
$config['new_image'] = $small_img;
$config['width'] = 120;
$config['height'] = 80;
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
else
{
copy($fileName, $small_img);
}
}
}
?>Edit: Moved the load image library out of the first if statement...oops. Also, I haven't actually tested this...there may be other errors. This is just a guide.
The problem with image_lib - El Forum - 01-07-2009
[eluser]codeDeveloper[/eluser]
Thanks. I think there is any option which is responsible for such behavior, as well as changing the size of the big party is usually not used.
The problem with image_lib - El Forum - 01-24-2009
[eluser]BaRzO[/eluser]
bump