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feat(splitter): update splitter styles #16909

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add746e
feat(splitter): update splitter styles
didimmova Feb 16, 2026
2e3bd37
styles(splitter): use background transiton, not opacity
didimmova Feb 17, 2026
4896899
Merge branch 'master' into didimmova/update-splitter
didimmova Feb 19, 2026
21b32cf
Merge branch 'master' into didimmova/update-splitter
kacheshmarova Feb 20, 2026
363e751
Merge branch 'master' into didimmova/update-splitter
desig9stein Feb 20, 2026
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28 changes: 27 additions & 1 deletion projects/igniteui-angular/core/src/core/styles/components/splitter/_splitter-component.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@
@extend %igx-splitter-base !optional;

@include b(#{$this}-bar-host) {
&:focus {
&:focus-visible {
@extend %igx-splitter-bar--focus !optional;
}
}
Expand All @@ -39,9 +39,35 @@
@extend %igx-splitter-expander--end !optional;
}

&:active {
@extend %igx-splitter-bar--active !optional;

@include e(handle) {
@extend %igx-splitter-handle--active !optional;
}

@include e(expander, 'start') {
@extend %igx-splitter-expander--start--active !optional;
}

@include e(expander, 'end') {
@extend %igx-splitter-expander--end--active !optional;
}
}

@include m('vertical') {
@extend %igx-splitter-bar--vertical !optional;

&:active {
@include e(expander, 'start') {
@extend %igx-splitter-expander--start-vertical--active !optional;
}

@include e(expander, 'end') {
@extend %igx-splitter-expander--end-vertical--active !optional;
}
}

@include e(handle) {
@extend %igx-splitter-handle !optional;
@extend %igx-splitter-handle--vertical !optional;
Expand Down
80 changes: 54 additions & 26 deletions projects/igniteui-angular/core/src/core/styles/components/splitter/_splitter-theme.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -15,14 +15,18 @@

$variant: map.get($theme, '_meta', 'theme');

//splitter-size + borders
$splitter-size: unitless(map.get($theme, 'size')) + 2;
$base-font-size: 16;

//splitter-size (convert rem to px) + padding
$splitter-size: unitless(map.get($theme, 'size')) * $base-font-size + 2;

//calculate the value for the slim(indigo) splitter
$slim-splitter: calc( 1 / $splitter-size);

%igx-splitter-base {
&[aria-orientation='horizontal'] {
padding-block: rem(1px);

[dir='rtl'] & {
flex-direction: row-reverse !important;
}
Expand Down Expand Up @@ -126,11 +130,9 @@
flex-grow: 1;
justify-content: center;
align-items: center;
background: $splitter-color;
border: rem(1px) solid $splitter-color;
background: hsla(from $splitter-color h s l / 0.68);
z-index: 99;
opacity: .68;
transition: opacity .15s $out-quad !important;
transition: background .15s $out-quad !important;

@if $variant != 'indigo' {
@extend %hide-controls;
Expand All @@ -156,31 +158,36 @@

&:hover {
transition: all .25s ease-out;
opacity: 1;
background: $splitter-color;
}
}

%igx-splitter-bar--focus {
// Remove the default browser outline styles
outline: transparent solid rem(1px);
box-shadow: inset 0 0 0 rem(1px) var-get($theme, 'focus-color');
outline: none;
box-shadow: 0 0 0 rem(2px) var-get($theme, 'focus-color');
transition: box-shadow .15s ease-in;
z-index: 100;

@if $variant == 'indigo' {
box-shadow: none;

%indigo-splitter-bar {
background: var-get($theme, 'focus-color');
border-color: var-get($theme, 'focus-color');

&.igx-splitter-bar--collapsible {
@extend %show-controls;
@extend %expand-bars;
}
%indigo-splitter-bar.igx-splitter-bar--collapsible {
@extend %show-controls;
@extend %expand-bars;
}
}

&:hover {
box-shadow: none;
transition: box-shadow .25s ease-out;
}
}

%igx-splitter-bar--active {
background: var-get($theme, 'bar-color-active');
}

%igx-splitter-bar--vertical {
padding-inline: rem(1px);
flex-direction: column;
height: 100%;

Expand All @@ -202,6 +209,10 @@
border-radius: var-get($theme, 'border-radius');
}

%igx-splitter-handle--active {
background: var-get($theme, 'handle-color-active');
}

%igx-splitter-handle--horizontal {
width: 25%;
height: var-get($theme, 'size');
Expand Down Expand Up @@ -231,7 +242,7 @@
}

%igx-splitter-expander--start {
border-bottom: var-get($theme, 'size') solid var-get($theme, 'expander-color');
border-block-end: var-get($theme, 'size') solid var-get($theme, 'expander-color');

&::before {
@extend %igx-splitter-hitbox;
Expand All @@ -242,9 +253,12 @@
}
}

%igx-splitter-expander--start--active {
border-block-end-color: var-get($theme, 'expander-color-active');
}

%igx-splitter-expander--end {
border-bottom: unset;
border-top: var-get($theme, 'size') solid var-get($theme, 'expander-color');
border-block-start: var-get($theme, 'size') solid var-get($theme, 'expander-color');

&::before {
@extend %igx-splitter-hitbox;
Expand All @@ -255,10 +269,14 @@
}
}

%igx-splitter-expander--end--active {
border-block-start-color: var-get($theme, 'expander-color-active');
}

%igx-splitter-expander--start-vertical {
border-top: var-get($theme, 'size') solid transparent;
border-block-start: var-get($theme, 'size') solid transparent;
border-inline-end: var-get($theme, 'size') solid var-get($theme, 'expander-color');
border-bottom: var-get($theme, 'size') solid transparent;
border-block-end: var-get($theme, 'size') solid transparent;
border-inline-start: unset;

&::before {
Expand All @@ -270,10 +288,15 @@
}
}

%igx-splitter-expander--start-vertical--active {
border-block-end-color: transparent;
border-inline-end-color: var-get($theme, 'expander-color-active');
}

%igx-splitter-expander--end-vertical {
border-top: var-get($theme, 'size') solid transparent;
border-block-start: var-get($theme, 'size') solid transparent;
border-inline-end: unset;
border-bottom: var-get($theme, 'size') solid transparent;
border-block-end: var-get($theme, 'size') solid transparent;
border-inline-start: var-get($theme, 'size') solid var-get($theme, 'expander-color');

&::before {
Expand All @@ -284,4 +307,9 @@
width: calc(#{map.get($theme, 'size')} * 3);
}
}

%igx-splitter-expander--end-vertical--active {
border-block-start-color: transparent;
border-inline-start-color: var-get($theme, 'expander-color-active');
}
}
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