fix(material/core): include alternative tokens (#30633)

Author: andrewseguin

src/material/core/tokens/m3/definitions/_md-comp-elevated-card.scss

@@ -13,6 +13,9 @@
 
 @use './md-sys-state';
 
+// Indicates whether alternative tokens should be used
+$_alternate-tokens: false;
+
 $_default: (
   'md-sys-color': md-sys-color.values-light(),
   'md-sys-elevation': md-sys-elevation.values(),
@@ -21,7 +24,7 @@ $_default: (
 );
 
 @function values($deps: $_default, $exclude-hardcoded-values: false) {
-  @return (
+  $values: (
     'container-color': map.get($deps, 'md-sys-color', 'surface-container-low'),
     'container-elevation': map.get($deps, 'md-sys-elevation', 'level1'),
     'container-shadow-color': map.get($deps, 'md-sys-color', 'shadow'),
@@ -50,4 +53,12 @@ $_default: (
     'pressed-state-layer-opacity':
       map.get($deps, 'md-sys-state', 'pressed-state-layer-opacity')
   );
+
+  @if ($_alternate-tokens) {
+    $values: map.merge($values, (
+      'container-color': map.get($deps, 'md-sys-color', 'surface'),
+    ));
+  }
+
+  @return $values;
 }

src/material/core/tokens/m3/definitions/_md-sys-color.scss

@@ -7,12 +7,15 @@
 
 @use './md-ref-palette';
 
+// Indicates whether alternative tokens should be used
+$_alternate-tokens: false;
+
 $_default-dark: (
   'md-ref-palette': md-ref-palette.values(),
 );
 
 @function values-dark($deps: $_default-dark) {
-  @return (
+  $values: (
     'background': map.get($deps, 'md-ref-palette', 'neutral6'),
     'error': map.get($deps, 'md-ref-palette', 'error80'),
     'error-container': map.get($deps, 'md-ref-palette', 'error30'),
@@ -64,14 +67,32 @@ $_default-dark: (
     'tertiary-fixed': map.get($deps, 'md-ref-palette', 'tertiary90'),
     'tertiary-fixed-dim': map.get($deps, 'md-ref-palette', 'tertiary80')
   );
+
+  @if ($_alternate-tokens) {
+    $values: map.merge($values, (
+      'background': map.get($deps, 'md-ref-palette', 'neutral10'),
+      'on-surface-variant': map.get($deps, 'md-ref-palette', 'neutral-variant80'),
+      'surface': map.get($deps, 'md-ref-palette', 'neutral10'),
+      'surface-bright': #37393b,
+      'surface-container': #1e1f20,
+      'surface-container-high': #282a2c,
+      'surface-container-highest': #333537,
+      'surface-container-low': #1b1b1b,
+      'surface-container-lowest': #0e0e0e,
+      'surface-dim': #131313,
+      'surface-tint': #d1e1ff,
+    ));
+  }
+
+  @return $values;
 }
 
 $_default-light: (
   'md-ref-palette': md-ref-palette.values(),
 );
 
 @function values-light($deps: $_default-light) {
-  @return (
+  $values: (
     'background': map.get($deps, 'md-ref-palette', 'neutral98'),
     'error': map.get($deps, 'md-ref-palette', 'error40'),
     'error-container': map.get($deps, 'md-ref-palette', 'error90'),
@@ -123,4 +144,25 @@ $_default-light: (
     'tertiary-fixed': map.get($deps, 'md-ref-palette', 'tertiary90'),
     'tertiary-fixed-dim': map.get($deps, 'md-ref-palette', 'tertiary80')
   );
+
+  @if ($_alternate-tokens) {
+    $values: map.merge($values, (
+      'background': map.get($deps, 'md-ref-palette', 'neutral100'),
+      'on-error-container': map.get($deps, 'md-ref-palette', 'error10'),
+      'on-primary-container': map.get($deps, 'md-ref-palette', 'primary10'),
+      'on-secondary-container': map.get($deps, 'md-ref-palette', 'secondary10'),
+      'on-tertiary-container': map.get($deps, 'md-ref-palette', 'tertiary10'),
+      'surface': map.get($deps, 'md-ref-palette', 'neutral100'),
+      'surface-bright': map.get($deps, 'md-ref-palette', 'neutral100'),
+      'surface-container': #f0f4f9,
+      'surface-container-high': #e9eef6,
+      'surface-container-highest': #dde3ea,
+      'surface-container-low': #f8fafd,
+      'surface-container-lowest': map.get($deps, 'md-ref-palette', 'primary100'),
+      'surface-dim': #d3dbe5,
+      'surface-tint': #6991d6,
+    ));
+  }
+
+  @return $values;
 }

src/material/core/tokens/m3/definitions/_md-sys-typescale.scss

@@ -7,12 +7,15 @@
 
 @use './md-ref-typeface';
 
+// Indicates whether alternative tokens should be used
+$_alternate-tokens: false;
+
 $_default: (
   'md-ref-typeface': md-ref-typeface.values(),
 );
 
 @function values($deps: $_default, $exclude-hardcoded-values: false) {
-  @return (
+  $values: (
     // Warning: risk of reduced fidelity from using this composite typography token.
     // Tokens md.sys.typescale.body-large.tracking cannot be represented in the "font"
     // property shorthand. Consider using the discrete properties instead.
@@ -305,4 +308,20 @@ $_default: (
     'title-small-tracking': if($exclude-hardcoded-values, null, 0.006rem),
     'title-small-weight': map.get($deps, 'md-ref-typeface', 'weight-medium')
   );
+
+  @if ($_alternate-tokens) {
+    $values: map.merge($values, (
+      'body-large-tracking': if($exclude-hardcoded-values, null, 0),
+      'body-medium-tracking': if($exclude-hardcoded-values, null, 0),
+      'body-small-tracking': if($exclude-hardcoded-values, null, 0.006rem),
+      'display-large-tracking': if($exclude-hardcoded-values, null, 0),
+      'label-large-tracking': if($exclude-hardcoded-values, null, 0),
+      'label-medium-tracking': if($exclude-hardcoded-values, null, 0.006rem),
+      'label-small-tracking': if($exclude-hardcoded-values, null, 0.006rem),
+      'title-medium-tracking': if($exclude-hardcoded-values, null, 0),
+      'title-small-tracking': if($exclude-hardcoded-values, null, 0),
+    ));
+  }
+
+  @return $values;
 }