feat: add ribbon

components/badge/Badge.tsx

@@ -7,8 +7,9 @@ import { cloneElement } from '../_util/vnode';
 import { getTransitionProps, Transition } from '../_util/transition';
 import isNumeric from '../_util/isNumeric';
 import { defaultConfigProvider } from '../config-provider';
-import { inject, defineComponent, CSSProperties, VNode } from 'vue';
+import { inject, defineComponent, CSSProperties, VNode, App, Plugin } from 'vue';
 import { tuple } from '../_util/type';
+import Ribbon from './Ribbon';
 
 const BadgeProps = {
   /** Number to show in badge */
@@ -30,8 +31,10 @@ const BadgeProps = {
 function isPresetColor(color?: string): boolean {
   return (PresetColorTypes as string[]).indexOf(color) !== -1;
 }
-export default defineComponent({
+
+const Badge = defineComponent({
   name: 'ABadge',
+  Ribbon: Ribbon,
   props: initDefaultProps(BadgeProps, {
     showZero: false,
     dot: false,
@@ -225,3 +228,14 @@ export default defineComponent({
     );
   },
 });
+
+Badge.install = function(app: App) {
+  app.component(Badge.name, Badge);
+  app.component(Badge.Ribbon.displayName, Badge.Ribbon);
+  return app;
+};
+
+export default Badge as typeof Badge &
+  Plugin & {
+    readonly Ribbon: typeof Ribbon;
+  };

components/badge/Ribbon.tsx

@@ -0,0 +1,52 @@
+import { LiteralUnion } from '../_util/type';
+import { PresetColorType } from '../_util/colors';
+import { isPresetColor } from './utils';
+import { defaultConfigProvider } from '../config-provider';
+import { HTMLAttributes, FunctionalComponent, VNodeTypes, inject, CSSProperties } from 'vue';
+
+type RibbonPlacement = 'start' | 'end';
+
+export interface RibbonProps extends HTMLAttributes {
+  prefixCls?: string;
+  text?: VNodeTypes;
+  color?: LiteralUnion<PresetColorType, string>;
+  placement?: RibbonPlacement;
+}
+
+const Ribbon: FunctionalComponent<RibbonProps> = (props, { attrs, slots }) => {
+  const { prefixCls: customizePrefixCls, color, text, placement = 'end' } = props;
+  const { class: className, style } = attrs;
+  const children = slots.default?.();
+  const { getPrefixCls, direction } = inject('configProvider', defaultConfigProvider);
+
+  const prefixCls = getPrefixCls('ribbon', customizePrefixCls);
+  const colorInPreset = isPresetColor(color);
+  const ribbonCls = [
+    prefixCls,
+    `${prefixCls}-placement-${placement}`,
+    {
+      [`${prefixCls}-rtl`]: direction === 'rtl',
+      [`${prefixCls}-color-${color}`]: colorInPreset,
+    },
+    className,
+  ];
+  const colorStyle: CSSProperties = {};
+  const cornerColorStyle: CSSProperties = {};
+  if (color && !colorInPreset) {
+    colorStyle.background = color;
+    cornerColorStyle.color = color;
+  }
+  return (
+    <div class={`${prefixCls}-wrapper`}>
+      {children}
+      <div class={ribbonCls} style={{ ...colorStyle, ...(style as CSSProperties) }}>
+        <span class={`${prefixCls}-text`}>{text}</span>
+        <div class={`${prefixCls}-corner`} style={cornerColorStyle} />
+      </div>
+    </div>
+  );
+};
+
+Ribbon.displayName = 'ABadgeRibbon';
+
+export default Ribbon;

components/badge/index.ts

@@ -1,4 +1,3 @@
 import Badge from './Badge';
-import { withInstall } from '../_util/type';
 
-export default withInstall(Badge);
+export default Badge;

components/badge/style/index.less

@@ -188,3 +188,5 @@
     opacity: 0;
   }
 }
+
+@import './ribbon';

components/badge/style/ribbon.less

@@ -0,0 +1,81 @@
+@import '../../style/themes/index';
+@import '../../style/mixins/index';
+
+@ribbon-prefix-cls: ~'@{ant-prefix}-ribbon';
+@ribbon-wrapper-prefix-cls: ~'@{ant-prefix}-ribbon-wrapper';
+
+.@{ribbon-wrapper-prefix-cls} {
+  position: relative;
+}
+
+.@{ribbon-prefix-cls} {
+  .reset-component();
+
+  position: absolute;
+  top: 8px;
+  height: 22px;
+  padding: 0 8px;
+  color: @badge-text-color;
+  line-height: 22px;
+  white-space: nowrap;
+  background-color: @primary-color;
+  border-radius: @border-radius-sm;
+
+  &-text {
+    color: @white;
+  }
+
+  &-corner {
+    position: absolute;
+    top: 100%;
+    width: 8px;
+    height: 8px;
+    color: currentColor;
+    border: 4px solid;
+    transform: scaleY(0.75);
+    transform-origin: top;
+    // If not support IE 11, use filter: brightness(75%) instead
+    &::after {
+      position: absolute;
+      top: -4px;
+      left: -4px;
+      width: inherit;
+      height: inherit;
+      color: rgba(0, 0, 0, 0.25);
+      border: inherit;
+      content: '';
+    }
+  }
+
+  // colors
+  // mixin to iterate over colors and create CSS class for each one
+  .make-color-classes(@i: length(@preset-colors)) when (@i > 0) {
+    .make-color-classes(@i - 1);
+    @color: extract(@preset-colors, @i);
+    @darkColor: '@{color}-6';
+    &-color-@{color} {
+      color: @@darkColor;
+      background: @@darkColor;
+    }
+  }
+  .make-color-classes();
+
+  // placement
+  &.@{ribbon-prefix-cls}-placement-end {
+    right: -8px;
+    border-bottom-right-radius: 0;
+    .@{ribbon-prefix-cls}-corner {
+      right: 0;
+      border-color: currentColor transparent transparent currentColor;
+    }
+  }
+
+  &.@{ribbon-prefix-cls}-placement-start {
+    left: -8px;
+    border-bottom-left-radius: 0;
+    .@{ribbon-prefix-cls}-corner {
+      left: 0;
+      border-color: currentColor currentColor transparent transparent;
+    }
+  }
+}

components/badge/utils.ts

@@ -0,0 +1,5 @@
+import { PresetColorTypes } from '../_util/colors';
+
+export function isPresetColor(color?: string): boolean {
+  return (PresetColorTypes as any[]).indexOf(color) !== -1;
+}