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How can I access an image from index.html is created by NXG?

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I'm developing LabVIEW NXG Web Module application.

On index.html, I want to display "DF.png" located in local PC so, I wrote following code.

HTML Source

<div class="DF-bg">
    <div class="box">
    /*Do something */
    </div>        
</div>

 CSS Source

.DF-bg {
  background-image: url(../images/DF.png);
}

Folder Structure

Main.gcomp

  +--index.gviweb

  +--images
    +-- DF.png

Of course, I have already selected "Always Include" configuration on gcomp settings.

 

When I executed the application on local PC, the image was shown as I expected. But once I uploaded and executed the .nipkg on SystemLink Cloud, no image was shown.

 

I guessed my path settings was wrong so, I modified as below but any change was occurred.

.DF-bg {
  background-image: url(/images/DF.png);
}

 

.DF-bg {
  background-image: url(index.html/images/DF.png);
}

 

 

I have no idea to achieve my request. Does anyone have a suggestion?

 

Thanks a lot, Emboar

Emboar
Certified LabVIEW Developer
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Accepted by topic author Emboar

Hi Emboar,

 

The path should be relative to the html file location, so for the following example:

Main.gcomp

+--index.gviweb

+--images
+--+--DF.png

 

The relative url from index to DF.png is:

images/DF.png

Note that there is no preceding ../ or a preceding / in the url. Another valid representation would be ./images/DF.png (note the single period instead of a double period).

 

You can confirm relative path by using the URL Image control to select an image contained in your component and seeing the resulting Source URL in the configuration pane:

imagerelativepaths2.gif

 


Milan
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Hi MilanR, thanks for your comment. I tried both "images/DF.png" and "./images/DF.png" but the image didn't show up.

 

In this case, I'm not calling <img> tag in html. HTML code is below.

<div class="DF-bg">
            <div class="box">
                <h1 class="c-title white">
                    Discussion Forum
                </h1>
                <p class="des white">
                    Use Discussion Forum!
                </p>

            </div>
            <a class="button" href="https://forums.ni.com/">Discussion Forum</a>
        </div>

CSS code is below.

.DF-bg {
  background-image: url(./images/DF.png);
  background-size: cover;
  position: relative;
  height:500px;
  
}

.DF-bg::before{
 content: ' ';
 background-color: #333333;
 position: absolute;
 filter: blur(20px);
 opacity: 0.8;
 top: 0;
 right: 0;
 bottom: 0;
 left: 0;
}

.DF-bg a {
  position: absolute;
  top: 0;
  left: 0;
  top: 80%;
  left: 50%;
  -ms-transform: translate(-50%,-50%);
  -webkit-transform: translate(-50%,-50%);
  transform: translate(-50%,-50%);
}

.box{
 position: absolute;
 width: 100%;
 text-align: center;
 padding-top: 25px;
 height: 60%;
}

To access the image source from css, I guess following steps are required.

  1. move to upper folder (../)
  2. move to images folder (../images)
  3. specify the image (../images/DF.png)

Thanks to your explanation, I understood 1st "../" is not correct. But at local execution, the image was shown correctly by the way. If you have a chance to try to reproduce my problem, I'd like to know whether you can reproduce or not.

Emboar
Certified LabVIEW Developer
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I'm sorry for bothering you again...

I added new line into my html source as below.

 

I'm sorry, I had a small problem on my PC. Please ignore this post.

Emboar
Certified LabVIEW Developer
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Hi Emboar,

Can you provide a small project that shows the behavior?

 


Milan
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Hi MilanR, I tried to reproduce the issue with blank project but couldn't no matter what I did.

I guessed my existing project had a wrong code so compared to the blank one but couldn't find root cause.

 

I decided to change my web style not to use background-image.

My web site has been go-live. If you are interested in, I'll share URL via private message.

 

I'm sorry for bothering you many times and really appreciate your kind support.

Best, Emboar

Emboar
Certified LabVIEW Developer
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