The component needs to span the entire width and height of its parent element

I'm currently working on creating a progress bar component in Angular, and everything seems to be functioning well except for covering the parent element.

If you'd like to see the code in action, check it out here:

Code Demo: Current Angular Code

CSS Styles:

:host {
  box-sizing: border-box;
  border: 1px solid green;
  display: flex;
  justify-content: center;
  align-items: center;
}

:host> .loader {
  border: 3px solid rgba(126, 132, 138, 0.1);
  border-radius: 50%;
  border-top: 3px solid red;
  width: 40px;
  height: 40px;
  -webkit-animation: spin 1s linear infinite; /* Safari */
  animation: spin 1s linear infinite;
  text-align: center;
  display: inline-block;
  z-index: 1010;
  opacity: 1;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

Basic HTML Structure:

<div class="loader"  *ngIf="isLoading"></div>

https://i.sstatic.net/N5niT.png

cssangularprogress-bar

Answer №1

To make the progress bar cover the parent div, you'll need to add some CSS:

<h3>
  Make sure this progress bar covers the entire parent div area <br />
  which is represented by the dotted area(page-section)
</h3>
<div id="page-section">
  <div class="example-loading">
    <app-loader></app-loader>
  </div>

  <h4>Form Controls</h4>
  ...
</div>


.example-loading {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 40px;
  right: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

Check out the StackBlitz here

Answer №2

An easy solution is to modify the parent's css behavior instead of the loading component.

Update your .page-section class in the app.component.css file like this:

#page-section {
  border: 3px dotted #bbb;
  position: relative;
}

Next, enclose the loader component within a tag with the following styling:

.loader-container {
  position: absolute;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
}

This adjustment allows the container to occupy all available space and center its content both vertically and horizontally.

Check out your updated code here.

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