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tgordon18
tgordon18

Reputation: 1849

Change Checkbox Size in Angular Material Selection List

Is it possible to change the size of the checkbox in an Angular Material Selection List? I've tried changing the size of the mat-pseudo-checkbox in CSS but that results in the checkmark not being placed properly:

mat-pseudo-checkbox {
  height: 10px;
  width: 10px;
}

Checkmark improperly placed

Is there another selector that I need to adjust to correct this?

Upvotes: 11

Views: 19300

Answers (5)

user14583508
user14583508

Reputation: 11

Setting those 2 variables in an scss file worked for me :

--mdc-checkbox-state-layer-size: 26px;
--mdc-checkbox-state-size: 16px;

Upvotes: 1

vadyaravadim
vadyaravadim

Reputation: 1

Works with 17.0.3

this affects the https://material.angular.io/components/checkbox

"* 2" - this is your value, how many times to increase

the value of how many times to increase should be the same for: /* from angular material: --mdc-checkbox-state-layer-size and --mdc-checkbox-state-size

/* from angular material: --mdc-checkbox-state-layer-size */
/* custom for your convenience: --mdc-checkbox-state-size */

:root {
    --mdc-checkbox-state-layer-size: calc(40px * 2);
    --mdc-checkbox-state-size: calc(18px * 2);
}

.mdc-checkbox {
    flex: 0 0 var(--mdc-checkbox-state-size) !important;
    width: var(--mdc-checkbox-state-size) !important;
    height: var(--mdc-checkbox-state-size) !important;
    padding: calc((var(--mdc-checkbox-state-layer-size) - var(--mdc-checkbox-state-size)) / 2) !important;
}

.mat-mdc-checkbox-touch-target {
    width: calc(var(--mdc-checkbox-state-layer-size) + 8) !important;
    height: calc(var(--mdc-checkbox-state-layer-size) + 8) !important;
}

.mdc-checkbox .mdc-checkbox__background {
    top: calc((var(--mdc-checkbox-state-layer-size) - var(--mdc-checkbox-state-size)) / 2) !important;
    left: calc((var(--mdc-checkbox-state-layer-size) - var(--mdc-checkbox-state-size)) / 2) !important;
    width: var(--mdc-checkbox-state-size) !important;
    height: var(--mdc-checkbox-state-size) !important;
}

Upvotes: 0

Kishor Shivane
Kishor Shivane

Reputation: 41

I was facing the similar issue and tried the below CSS, which seems to work in Angular 8:

::ng-deep .mat-checkbox .mat-checkbox-inner-container {
    width: 30px;
    height: 30px;
}

I have added a sample width and height; please customize these to what you need.

Upvotes: 4

bresleveloper
bresleveloper

Reputation: 6066

With Angular 7 I succeeded with:

mat-checkbox ::ng-deep .mat-checkbox-inner-container {width: 30px;height: 30px;}

Upvotes: 13

Richrd
Richrd

Reputation: 7132

Yes, the checkmark is just a pseudo element within the checkbox. You can override it's styles the same way as with the box itself.

For your case with the 10px box size the following CSS would work (for other sizes the values need to be adjusted):

.mat-pseudo-checkbox-checked::after {
    top: 0px;
    left: -1px;
    width: 6px;
    height: 2px;
}

Upvotes: 4

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