feat: add wave

components/_util/wave/style.ts

@@ -0,0 +1,34 @@
+import { genComponentStyleHook } from '../../theme/internal'
+import type { FullToken, GenerateStyle } from '../../theme/internal'
+
+export interface ComponentToken {}
+
+export interface WaveToken extends FullToken<'Wave'> {}
+
+const genWaveStyle: GenerateStyle<WaveToken> = token => {
+  const { componentCls, colorPrimary } = token
+  return {
+    [componentCls]: {
+      position: 'absolute',
+      background: 'transparent',
+      pointerEvents: 'none',
+      boxSizing: 'border-box',
+      color: `var(--wave-color, ${colorPrimary})`,
+
+      boxShadow: `0 0 0 0 currentcolor`,
+      opacity: 0.2,
+
+      // =================== Motion ===================
+      '&.wave-motion-appear': {
+        transition: [`box-shadow 0.4s ${token.motionEaseOutCirc}`, `opacity 2s ${token.motionEaseOutCirc}`].join(','),
+
+        '&-active': {
+          boxShadow: `0 0 0 6px currentcolor`,
+          opacity: 0
+        }
+      }
+    }
+  }
+}
+
+export default genComponentStyleHook('Wave', token => [genWaveStyle(token)])