feat: add wave

components/_util/wave/index.tsx

@@ -0,0 +1,12 @@
+import { defineComponent } from 'vue'
+
+const Wave = defineComponent({
+  name: 'Wave',
+  setup(_, { slots }) {
+    return () => {
+      return slots.default?.()
+    }
+  }
+})
+
+export default 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)])

components/_util/wave/util.ts

@@ -0,0 +1,35 @@
+export function isNotGrey(color: string) {
+  // eslint-disable-next-line no-useless-escape
+  const match = (color || '').match(/rgba?\((\d*), (\d*), (\d*)(, [\d.]*)?\)/)
+  if (match && match[1] && match[2] && match[3]) {
+    return !(match[1] === match[2] && match[2] === match[3])
+  }
+  return true
+}
+
+export function isValidWaveColor(color: string) {
+  return (
+    color &&
+    color !== '#fff' &&
+    color !== '#ffffff' &&
+    color !== 'rgb(255, 255, 255)' &&
+    color !== 'rgba(255, 255, 255, 1)' &&
+    isNotGrey(color) &&
+    !/rgba\((?:\d*, ){3}0\)/.test(color) && // any transparent rgba color
+    color !== 'transparent'
+  )
+}
+
+export function getTargetWaveColor(node: HTMLElement) {
+  const { borderTopColor, borderColor, backgroundColor } = getComputedStyle(node)
+  if (isValidWaveColor(borderTopColor)) {
+    return borderTopColor
+  }
+  if (isValidWaveColor(borderColor)) {
+    return borderColor
+  }
+  if (isValidWaveColor(backgroundColor)) {
+    return backgroundColor
+  }
+  return null
+}

components/button/button.tsx

@@ -1,5 +1,6 @@
 import { computed, defineComponent } from 'vue'
 import { useProviderConfigState } from '../config-provider/context'
+import Wave from '../_util/wave'
 import useStyle from './style'
 
 const Button = defineComponent({
@@ -29,12 +30,14 @@ const Button = defineComponent({
 
     return () => {
       return wrapSSR(
-        <button
-          {...attrs}
-          class={[cls.value, attrs.class]}
-        >
-          {slots.default?.()}
-        </button>
+        <Wave>
+          <button
+            {...attrs}
+            class={[cls.value, attrs.class]}
+          >
+            {slots.default?.()}
+          </button>
+        </Wave>
       )
     }
   }

components/theme/interface/components.ts

@@ -48,7 +48,7 @@ import type { ComponentToken as ButtonComponentToken } from '../../button/style'
 // import type { ComponentToken as TourComponentToken } from '../../tour/style'
 // import type { ComponentToken as QRCodeComponentToken } from '../../qrcode/style'
 // import type { ComponentToken as AppComponentToken } from '../../app/style'
-// import type { ComponentToken as WaveToken } from '../../_util/wave/style'
+import type { ComponentToken as WaveToken } from '../../_util/wave/style'
 
 export interface ComponentTokenMap {
   Affix?: {}
@@ -115,5 +115,5 @@ export interface ComponentTokenMap {
   // App?: AppComponentToken
   //
   // /** @private Internal TS definition. Do not use. */
-  // Wave?: WaveToken
+  Wave?: WaveToken
 }