The image dimensions remain unchanged even after resizing the toolbar

Within my mat-toolbar element, I initially set the size to 150px. However, upon transitioning to a different component, I adjust the size to 70px using the following code snippet:

<mat-toolbar style="position: sticky;" [style.height.px]="appWideService.toolbarHeight" color="primary">
<img/>
</mat-toolbar>
<router-outlet></router-outlet>

Within the different component:

ngOnInit() {
    this.appWideService.toolbarHeight = 70;
}

The issue arises with the image within the toolbar not updating its size when the toolbar size changes. The CSS styling for the image is as follows:

img {
    height: 80%;
    width: auto;
    max-width: 70%;
    object-fit: cover;
}

The image remains the same size, and seems to be a refreshing problem as adjusting the browser zoom triggers the image size update. What steps can I take to resolve this?

Answer №1

This is a straightforward explanation.

Consider the following CSS code:

object-fit: cover;

Instead, you can try:

object-fit: fill;

Cover
When using cover, the content will maintain its aspect ratio while filing the entire element's content box. In case the object's aspect ratio doesn't match the box, it may get clipped.

Fill
With fill, the content fits the element's content box entirely. The entire object fills the box without any clipping, but if the aspect ratios don't match, the object gets stretched to fit.

Helpful resource on object-fit property by Mozilla Developer Network

Answer №2

If you want your image to be automatically resized, don't forget to utilize the object-fit: cover; property

Answer №3

UPDATE: Is the code provided the one you are currently using? It appears that...

<mat-toolbar style="position: sticky;" [style.height.px]="appWideService.toolbarHeight" color="primary">

...will result in

<div style="position: sticky;" style="height=70px;" color="primary">
?

It seems like only one style attribute is allowed per HTML element

end UPDATE

The max-width is set at 70%, so adjusting the height won't have any effect if the width is already constrained to 70% as it will maintain its aspect ratio.

Try removing the max-width and see if the updates reflect correctly when altering the height.

Answer №4

Consider including position : relative; along with object-fit: fill; styling in your CSS

                          or

If you're experiencing issues, try refreshing your toolbar using the ChangeDetectorRef package (whenever you update the toolbar container)

import {ChangeDetectorRef} from '@angular/core';

constructor(private cd: ChangeDetectorRef) {}

this.cd.detectChanges();

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