From a57442284e4d7ea5c4a9314ada9d5fff3997d556 Mon Sep 17 00:00:00 2001
From: Ryan Wang <i@ryanc.cc>
Date: Thu, 13 Jan 2022 13:56:36 +0800
Subject: [PATCH] feat: post tags support color settings (halo-dev/console#395)

* feat: post tags support color settings

* feat: add tag color picker

* feat: support choose tag color

Co-authored-by: guqing <1484563614@qq.com>
---
 src/components/Post/PostTag.vue | 28 ++++++++++++++++++++
 src/components/index.js         |  4 ++-
 src/utils/colorUtil.js          | 47 +++++++++++++++++++++++++++++++++
 src/views/post/PostList.vue     |  4 +--
 src/views/post/TagList.vue      | 39 ++++++++++++++++++---------
 5 files changed, 107 insertions(+), 15 deletions(-)
 create mode 100644 src/components/Post/PostTag.vue
 create mode 100644 src/utils/colorUtil.js

diff --git a/src/components/Post/PostTag.vue b/src/components/Post/PostTag.vue
new file mode 100644
index 000000000..c6254626e
--- /dev/null
+++ b/src/components/Post/PostTag.vue
@@ -0,0 +1,28 @@
+<template>
+  <a-tag :color="tag.color" :style="{ color: labelColor }">
+    {{ tag.name }}
+  </a-tag>
+</template>
+<script>
+import { isHex, isLight } from '@/utils/colorUtil'
+
+export default {
+  name: 'PostTag',
+  props: {
+    tag: {
+      type: Object,
+      default: () => {}
+    }
+  },
+  computed: {
+    labelColor() {
+      const { color } = this.tag || {}
+      if (!color) return 'inherit'
+      if (!isHex(color)) {
+        return 'inherit'
+      }
+      return !isLight(color) ? '#fff' : 'inherit'
+    }
+  }
+}
+</script>
diff --git a/src/components/index.js b/src/components/index.js
index 7c4c065d1..8c171da05 100644
--- a/src/components/index.js
+++ b/src/components/index.js
@@ -6,6 +6,7 @@ import FilePondUpload from '@/components/Upload/FilePondUpload'
 import AttachmentSelectDrawer from './Attachment/AttachmentSelectDrawer'
 import AttachmentUploadModal from './Attachment/AttachmentUploadModal'
 import ReactiveButton from './Button/ReactiveButton'
+import PostTag from './Post/PostTag'
 
 const _components = {
   Ellipsis,
@@ -13,7 +14,8 @@ const _components = {
   FilePondUpload,
   AttachmentSelectDrawer,
   AttachmentUploadModal,
-  ReactiveButton
+  ReactiveButton,
+  PostTag
 }
 
 const components = {}
diff --git a/src/utils/colorUtil.js b/src/utils/colorUtil.js
new file mode 100644
index 000000000..260805118
--- /dev/null
+++ b/src/utils/colorUtil.js
@@ -0,0 +1,47 @@
+const isLight = color => {
+  if (!isHex(color)) {
+    return false
+  }
+
+  // Check the format of the color, HEX or RGB?
+  let r, g, b, hsp
+  if (color.match(/^rgb/)) {
+    // If HEX --> store the red, green, blue values in separate variables
+    color = color.match(/^rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*(\d+(?:\.\d+)?))?\)$/)
+
+    r = color[1]
+    g = color[2]
+    b = color[3]
+  } else {
+    // If RGB --> Convert it to HEX: http://gist.github.com/983661
+    color = +('0x' + color.slice(1).replace(color.length < 5 && /./g, '$&$&'))
+
+    r = color >> 16
+    g = (color >> 8) & 255
+    b = color & 255
+  }
+
+  // HSP (Highly Sensitive Poo) equation from http://alienryderflex.com/hsp.html
+  hsp = Math.sqrt(0.299 * (r * r) + 0.587 * (g * g) + 0.114 * (b * b))
+
+  // Using the HSP value, determine whether the color is light or dark
+  return hsp > 127.5
+}
+
+const randomHex = () => {
+  return '#' + Math.floor(Math.random() * 16777215).toString(16)
+}
+const hexRegExp = /(^#[0-9A-F])/i
+
+const isHex = color => {
+  return hexRegExp.test(color)
+}
+
+const isRgb = color => {
+  return /^rgb/.test(color)
+}
+const isHsl = color => {
+  return /^hsl/.test(color)
+}
+
+export { isLight, randomHex, isHex, hexRegExp, isRgb, isHsl }
diff --git a/src/views/post/PostList.vue b/src/views/post/PostList.vue
index 7aadf3f08..72fb6cb09 100644
--- a/src/views/post/PostList.vue
+++ b/src/views/post/PostList.vue
@@ -201,7 +201,7 @@
             <a-tag
               v-for="(tag, tagIndex) in item.tags"
               :key="'tag_' + tagIndex"
-              color="green"
+              :color="tag.color"
               style="margin-bottom: 8px"
               >{{ tag.name }}
             </a-tag>
@@ -268,7 +268,7 @@
           </span>
 
           <span slot="tags" slot-scope="tags">
-            <a-tag v-for="(tag, index) in tags" :key="index" color="green" style="margin-bottom: 8px">
+            <a-tag v-for="(tag, index) in tags" :key="index" :color="tag.color" style="margin-bottom: 8px">
               {{ tag.name }}
             </a-tag>
           </span>
diff --git a/src/views/post/TagList.vue b/src/views/post/TagList.vue
index 325f30de1..a9f075b04 100644
--- a/src/views/post/TagList.vue
+++ b/src/views/post/TagList.vue
@@ -10,6 +10,13 @@
             <a-form-model-item help="* 一般为单个标签页面的标识，最好为英文" label="别名：" prop="slug">
               <a-input v-model="form.model.slug" />
             </a-form-model-item>
+            <a-form-model-item label="颜色：" prop="color">
+              <a-input v-model="form.model.color">
+                <template #addonAfter>
+                  <verte v-model="form.model.color" model="hex" picker="square" style="cursor: pointer"></verte>
+                </template>
+              </a-input>
+            </a-form-model-item>
             <a-form-model-item help="* 在标签页面可展示，需要主题支持" label="封面图：" prop="thumbnail">
               <a-input v-model="form.model.thumbnail">
                 <a slot="addonAfter" href="javascript:void(0);" @click="thumbnailDrawer.visible = true">
@@ -63,9 +70,7 @@
               <template slot="title">
                 <span>{{ tag.postCount }} 篇文章</span>
               </template>
-              <a-tag color="blue" style="margin-bottom: 8px;cursor:pointer;" @click="form.model = tag"
-                >{{ tag.name }}
-              </a-tag>
+              <post-tag :tag="tag" style="margin-bottom: 8px;cursor:pointer;" @click.native="form.model = tag" />
             </a-tooltip>
           </a-spin>
         </a-card>
@@ -83,9 +88,15 @@
 <script>
 import { PageView } from '@/layouts'
 import apiClient from '@/utils/api-client'
+import { hexRegExp } from '@/utils/colorUtil'
+import Verte from 'verte'
+import 'verte/dist/verte.css'
 
 export default {
-  components: { PageView },
+  components: {
+    PageView,
+    Verte
+  },
   data() {
     return {
       list: {
@@ -93,7 +104,9 @@ export default {
         loading: false
       },
       form: {
-        model: {},
+        model: {
+          color: '#cfd3d7'
+        },
         saving: false,
         errored: false,
         rules: {
@@ -102,7 +115,8 @@ export default {
             { max: 255, message: '* 标签名称的字符长度不能超过 255', trigger: ['change'] }
           ],
           slug: [{ max: 255, message: '* 标签别名的字符长度不能超过 255', trigger: ['change'] }],
-          thumbnail: [{ max: 1023, message: '* 封面图链接的字符长度不能超过 1023', trigger: ['change'] }]
+          thumbnail: [{ max: 1023, message: '* 封面图链接的字符长度不能超过 1023', trigger: ['change'] }],
+          color: [{ max: 7, pattern: hexRegExp, message: '仅支持 hex 颜色值' }]
         }
       },
       thumbnailDrawer: {
@@ -112,10 +126,7 @@ export default {
   },
   computed: {
     title() {
-      if (this.isUpdateMode) {
-        return '修改标签'
-      }
-      return '添加标签'
+      return this.isUpdateMode ? '修改标签' : '添加标签'
     },
     isUpdateMode() {
       return !!this.form.model.id
@@ -138,7 +149,9 @@ export default {
     },
     handleDeleteTag(tagId) {
       apiClient.tag.delete(tagId).finally(() => {
-        this.form.model = {}
+        this.form.model = {
+          color: '#cfd3d7'
+        }
         this.handleListTags()
       })
     },
@@ -178,7 +191,9 @@ export default {
       if (_this.form.errored) {
         _this.form.errored = false
       } else {
-        _this.form.model = {}
+        _this.form.model = {
+          color: '#cfd3d7'
+        }
         _this.handleListTags()
       }
     },