JpGraph

cmate · #1 (**permalink**) 01-18-2009, 07:09 PM

Hi.
How can I render a GD or JpGraph image in a Zend Framework view ?
I'd like to do something thike this:
public function indexAction()
{

$im = imagecreatetruecolor ( 300, 200);
$black = imagecolorallocate ($im, 0, 0, 0 );
$white = imagecolorallocate ($im, 255, 255, 255 );

imagefilledrectangle ($im,0, 0,399,99 ,$white);
imagerectangle ($im,20, 20,250,190 ,$black);

header ("Content-type: image/png" );
$this->view->imagen=$im;
}

Thanks.

Tekerson · #2 (**permalink**) 01-18-2009, 09:27 PM

Yep, pretty close.

You can either add a view with
[php]
<?php echo $this->imagen; ?>
[/php]
in it to output the contents of the image, or disable view rendering with
[php]
$this->_helper->viewRenderer->setNoRender();
[/php]
and echo from the controller.

or moving everything you have there into the view (leaving the controller empty) would be another (possibly better?) option.

cmate · #3 (**permalink**) 01-19-2009, 08:31 AM

Ok.
Then I try with this controller:

public function indexAction()
{

}

And In the script view:
<?
$im = imagecreatetruecolor ( 300, 200);
$black = imagecolorallocate ($im, 0, 0, 0 );
$white = imagecolorallocate ($im, 255, 255, 255 );

imagefilledrectangle ($im,0, 0,399,99 ,$white);
imagerectangle ($im,20, 20,250,190 ,$black);

header ("Content-type: image/png" );
imagepng ($im);
?>

But the browser outputs somethig like
�PNG IHDR,�ݽK�IDATx��1� A1��+��q�'�+6P1��D1BL�!�D1BL�!�D 1BL�!�D1BL�!�D1B�sx��?U��Jpe�k�sb "��!&B��b"��!&B��b"��!&B��b"��!&B��b"��!& B��b"��!&B��b"��!&B��b"��!&B��b"��!&B��b" ��!&B��b"��!&B��b"��!&B��b"��!&B��b"��!&B ��b"��!&B��b"��!&B��b"��!&B��b"��!&B��b"� �!&B��b">�� ɬ?��IEND�B`�

If I run the view script separately (without Zend framewor) it's Ok.
Any suggestions?
Thanks.

Eugen · #4 (**permalink**) 01-19-2009, 09:04 AM

did you check header?
it looks like header ("Content-type: image/png" ); has been overwriten somewhere..

cmate · #5 (**permalink**) 01-19-2009, 09:29 AM

Quote:

Originally Posted by Eugen

did you check header?
it looks like header ("Content-type: image/png" ); has been overwriten somewhere..

Yes. I've found that the problem is the layout.
If I don't use layout it's ok.
I have In my bootstrap

$view = Zend_Layout::getMvcInstance()->getView();
$view->doctype('XHTML1_STRICT');

And the layot script is very simple
<html>
<head>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Zend Framework Application</title>
</head>
<body>
<?= $this->layout()->content ?>
</body>
</html>

I want to use my layout. What's wrong?

cmate · #6 (**permalink**) 01-19-2009, 10:14 AM

I must disable layout
$this->_helper->viewRenderer->setNoRender();
$this->_helper->layout->disableLayout();
I can render images correctly..

Thanks.

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