From c7b51025d0899f59436fd3bd6d1b188066738357 Mon Sep 17 00:00:00 2001
From: braks <78412429+bcakmakoglu@users.noreply.github.com>
Date: Tue, 13 Dec 2022 14:39:02 +0100
Subject: [PATCH] refactor(background): move background into separate package

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>
---
 packages/background/.eslintrc.js        |  8 +++
 packages/background/README.md           | 34 +++++++++
 packages/background/package.json        | 48 +++++++++++++
 packages/background/src/Background.vue  | 92 +++++++++++++++++++++++++
 packages/background/src/NodeToolbar.vue | 91 ++++++++++++++++++++++++
 packages/background/src/index.ts        |  2 +
 packages/background/src/types.ts        | 25 +++++++
 packages/background/tsconfig.json       | 31 +++++++++
 packages/background/vite.config.ts      | 45 ++++++++++++
 pnpm-lock.yaml                          | 19 +++++
 10 files changed, 395 insertions(+)
 create mode 100644 packages/background/.eslintrc.js
 create mode 100644 packages/background/README.md
 create mode 100644 packages/background/package.json
 create mode 100644 packages/background/src/Background.vue
 create mode 100644 packages/background/src/NodeToolbar.vue
 create mode 100644 packages/background/src/index.ts
 create mode 100644 packages/background/src/types.ts
 create mode 100644 packages/background/tsconfig.json
 create mode 100644 packages/background/vite.config.ts

diff --git a/packages/background/.eslintrc.js b/packages/background/.eslintrc.js
new file mode 100644
index 00000000..98c0e4cb
--- /dev/null
+++ b/packages/background/.eslintrc.js
@@ -0,0 +1,8 @@
+module.exports = {
+  rules: {
+    'no-use-before-define': 0,
+    'vue/no-setup-props-destructure': 0,
+  },
+  extends: ['../../.eslintrc.js'],
+  ignorePatterns: ['!**/*'],
+}
diff --git a/packages/background/README.md b/packages/background/README.md
new file mode 100644
index 00000000..82251afb
--- /dev/null
+++ b/packages/background/README.md
@@ -0,0 +1,34 @@
+# Vue Flow: Background Component
+
+This is a background component for Vue Flow.
+It can be used to create a background in your canvas.
+
+## 🛠 Setup
+
+```bash
+# install
+$ yarn add @vue-flow/background
+
+# or
+$ npm i --save @vue-flow/background
+```
+
+## 🎮 Quickstart
+
+```vue
+
+<script setup>
+import { VueFlow } from '@vue-flow/core'
+import { Background } from '@vue-flow/background'
+import initialElements from './initial-elements'
+
+// some nodes and edges
+const elements = ref(initialElements)
+</script>
+
+<template>
+  <VueFlow v-model="elements" fit-view-on-init class="vue-flow-basic-example">
+    <Background />
+  </VueFlow>
+</template>
+```
diff --git a/packages/background/package.json b/packages/background/package.json
new file mode 100644
index 00000000..e79c4c8f
--- /dev/null
+++ b/packages/background/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "@vue-flow/background",
+  "version": "1.0.0",
+  "private": false,
+  "license": "MIT",
+  "author": "Burak Cakmakoglu<78412429+bcakmakoglu@users.noreply.github.com>",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/bcakmakoglu/vue-flow/packages/plugins/background"
+  },
+  "homepage": "https://github.com/bcakmakoglu/vue-flow#readme",
+  "bugs": {
+    "url": "https://github.com/bcakmakoglu/vue-flow/issues"
+  },
+  "main": "./dist/vue-flow-plugin-background.js",
+  "module": "./dist/vue-flow-background.mjs",
+  "types": "./dist/index.d.ts",
+  "unpkg": "./dist/vue-flow-background.iife.js",
+  "jsdelivr": "./dist/vue-flow-background.iife.js",
+  "files": [
+    "dist"
+  ],
+  "sideEffects": false,
+  "scripts": {
+    "build": "vite build",
+    "types": "vue-tsc --declaration --emitDeclarationOnly && pnpm lint:dist",
+    "lint": "eslint --ext \".js,.jsx,.ts,.tsx\" --fix --ignore-path ../../.gitignore .",
+    "lint:dist": "eslint --ext \".ts,.tsx\" -c .eslintrc.js --fix ./dist",
+    "test": "exit 0"
+  },
+  "peerDependencies": {
+    "@vue-flow/core": "^1.0.0",
+    "vue": "^3.2.37"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@vue-flow/core": "workspace:*",
+    "@vitejs/plugin-vue": "^3.2.0",
+    "unplugin-auto-import": "^0.12.0",
+    "vite": "^3.2.5",
+    "vite-plugin-vue-type-imports": "0.2.0",
+    "vue-tsc": "^1.0.11"
+  },
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org/"
+  }
+}
diff --git a/packages/background/src/Background.vue b/packages/background/src/Background.vue
new file mode 100644
index 00000000..8a04ff20
--- /dev/null
+++ b/packages/background/src/Background.vue
@@ -0,0 +1,92 @@
+<script lang="ts" setup>
+import { useVueFlow } from '@vue-flow/core'
+import { BackgroundVariant } from './types'
+import type { BackgroundProps } from './types'
+
+const {
+  variant = 'dots' as BackgroundVariant,
+  gap = 10,
+  size = 0.4,
+  height = 100,
+  width = 100,
+  x = 0,
+  y = 0,
+  bgColor,
+  patternColor: initialPatternColor,
+} = defineProps<BackgroundProps>()
+
+const defaultColors: Record<BackgroundVariant, string> = {
+  [BackgroundVariant.Dots]: '#81818a',
+  [BackgroundVariant.Lines]: '#eee',
+}
+
+const { id, viewport } = useVueFlow()
+
+const background = $computed(() => {
+  const scaledGap = gap && gap * viewport.value.zoom
+  const xOffset = scaledGap && viewport.value.x % scaledGap
+  const yOffset = scaledGap && viewport.value.y % scaledGap
+  const bgSize = size * viewport.value.zoom
+
+  return {
+    scaledGap,
+    xOffset,
+    yOffset,
+    size: bgSize,
+  }
+})
+
+// when there are multiple flows on a page we need to make sure that every background gets its own pattern.
+const patternId = `pattern-${id}`
+
+const patternColor = computed(() => initialPatternColor || defaultColors[variant || BackgroundVariant.Dots])
+
+const d = computed(
+  () => `M${background.scaledGap / 2} 0 V${background.scaledGap} M0 ${background.scaledGap / 2} H${background.scaledGap}`,
+)
+</script>
+
+<script lang="ts">
+export default {
+  name: 'Background',
+}
+</script>
+
+<template>
+  <svg
+    class="vue-flow__background"
+    :style="{
+      height: `${height > 100 ? 100 : height}%`,
+      width: `${width > 100 ? 100 : width}%`,
+    }"
+  >
+    <slot :id="patternId" name="pattern-container">
+      <pattern
+        :id="patternId"
+        :x="background.xOffset"
+        :y="background.yOffset"
+        :width="background.scaledGap"
+        :height="background.scaledGap"
+        patternUnits="userSpaceOnUse"
+      >
+        <slot name="pattern">
+          <template v-if="variant === BackgroundVariant.Lines">
+            <path :stroke="patternColor" :stroke-width="size" :d="d" />
+          </template>
+
+          <template v-else-if="variant === BackgroundVariant.Dots">
+            <circle :cx="background.size" :cy="background.size" :r="background.size" :fill="patternColor" />
+          </template>
+
+          <svg v-if="bgColor" height="100" width="100">
+            <rect width="100%" height="100%" :fill="bgColor" />
+          </svg>
+        </slot>
+      </pattern>
+    </slot>
+
+    <rect :x="x" :y="y" width="100%" height="100%" :fill="`url(#${patternId})`" />
+
+    <slot :id="patternId" />
+  </svg>
+</template>
diff --git a/packages/background/src/NodeToolbar.vue b/packages/background/src/NodeToolbar.vue
new file mode 100644
index 00000000..b42b7377
--- /dev/null
+++ b/packages/background/src/NodeToolbar.vue
@@ -0,0 +1,91 @@
+<script lang="ts" setup>
+import { computed, inject } from 'vue'
+import type { GraphNode, Rect, ViewpaneTransform } from '@vue-flow/core'
+import { NodeIdInjection, Position, getRectOfNodes, useVueFlow } from '@vue-flow/core'
+
+import type { CSSProperties } from 'vue'
+import type { NodeToolbarProps } from './types'
+
+const props = withDefaults(defineProps<NodeToolbarProps>(), {
+  position: Position.Top,
+  offset: 10,
+})
+
+const contextNodeId = inject(NodeIdInjection, null)
+
+const { viewportRef, viewport, getSelectedNodes, findNode } = useVueFlow()
+
+function getTransform(nodeRect: Rect, transform: ViewpaneTransform, position: Position, offset: number): string {
+  // position === Position.Top
+  let xPos = (nodeRect.x + nodeRect.width / 2) * transform.zoom + transform.x
+  let yPos = nodeRect.y * transform.zoom + transform.y - offset
+  let xShift = -50
+  let yShift = -100
+
+  switch (position) {
+    case Position.Right:
+      xPos = (nodeRect.x + nodeRect.width) * transform.zoom + transform.x + offset
+      yPos = (nodeRect.y + nodeRect.height / 2) * transform.zoom + transform.y
+      xShift = 0
+      yShift = -50
+      break
+    case Position.Bottom:
+      yPos = (nodeRect.y + nodeRect.height) * transform.zoom + transform.y + offset
+      yShift = 0
+      break
+    case Position.Left:
+      xPos = nodeRect.x * transform.zoom + transform.x - offset
+      yPos = (nodeRect.y + nodeRect.height / 2) * transform.zoom + transform.y
+      xShift = -100
+      yShift = -50
+      break
+  }
+
+  return `translate(${xPos}px, ${yPos}px) translate(${xShift}%, ${yShift}%)`
+}
+
+const nodes = computed(() => {
+  const nodeIds = Array.isArray(props.nodeId) ? props.nodeId : [props.nodeId || contextNodeId || '']
+
+  return nodeIds.reduce<GraphNode[]>((acc, id) => {
+    const node = findNode(id)
+
+    if (node) {
+      acc.push(node)
+    }
+
+    return acc
+  }, [] as GraphNode[])
+})
+
+const isActive = computed(() =>
+  typeof props.isVisible === 'boolean'
+    ? props.isVisible
+    : nodes.value.length === 1 && nodes.value[0].selected && getSelectedNodes.value.length === 1,
+)
+
+const nodeRect = computed<Rect>(() => getRectOfNodes(nodes.value))
+
+const zIndex = computed<number>(() => Math.max(...nodes.value.map((node) => (node.computedPosition.z || 1) + 1)))
+
+const wrapperStyle = computed<CSSProperties>(() => ({
+  position: 'absolute',
+  transform: getTransform(nodeRect.value, viewport.value, props.position, props.offset),
+  zIndex: zIndex.value,
+}))
+</script>
+
+<script lang="ts">
+export default {
+  name: 'NodeToolbar',
+  inheritAttrs: false,
+}
+</script>
+
+<template>
+  <Teleport :to="viewportRef">
+    <div v-if="isActive && nodes.length" v-bind="$attrs" :style="wrapperStyle" class="vue-flow__node-toolbar">
+      <slot />
+    </div>
+  </Teleport>
+</template>
diff --git a/packages/background/src/index.ts b/packages/background/src/index.ts
new file mode 100644
index 00000000..e7aaa4b7
--- /dev/null
+++ b/packages/background/src/index.ts
@@ -0,0 +1,2 @@
+export { default as Background } from './Background.vue'
+export * from './types'
diff --git a/packages/background/src/types.ts b/packages/background/src/types.ts
new file mode 100644
index 00000000..487583ca
--- /dev/null
+++ b/packages/background/src/types.ts
@@ -0,0 +1,25 @@
+export enum BackgroundVariant {
+  Lines = 'lines',
+  Dots = 'dots',
+}
+
+export interface BackgroundProps {
+  /** The background pattern variant, {@link BackgroundVariant} */
+  variant?: BackgroundVariant
+  /** Background pattern gap */
+  gap?: number
+  /** Background pattern size */
+  size?: number
+  /** Background pattern color */
+  patternColor?: string
+  /** Background color */
+  bgColor?: string
+  /** Background height */
+  height?: number
+  /** Background width */
+  width?: number
+  /** Background x-coordinate (offset x) */
+  x?: number
+  /** Background y-coordinate (offset y) */
+  y?: number
+}
diff --git a/packages/background/tsconfig.json b/packages/background/tsconfig.json
new file mode 100644
index 00000000..e9fd0ac1
--- /dev/null
+++ b/packages/background/tsconfig.json
@@ -0,0 +1,31 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "module": "ESNext",
+    "target": "es2017",
+    "lib": [
+      "DOM",
+      "ESNext"
+    ],
+    "strict": true,
+    "esModuleInterop": true,
+    "incremental": false,
+    "skipLibCheck": true,
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "noUnusedLocals": false,
+    "strictNullChecks": true,
+    "forceConsistentCasingInFileNames": true,
+    "declaration": true,
+    "declarationDir": "./dist",
+    "emitDeclarationOnly": true,
+    "types": [],
+  },
+  "include": [
+    "./src",
+  ],
+  "exclude": [
+    "node_modules",
+    "dist"
+  ]
+}
diff --git a/packages/background/vite.config.ts b/packages/background/vite.config.ts
new file mode 100644
index 00000000..5789c6c5
--- /dev/null
+++ b/packages/background/vite.config.ts
@@ -0,0 +1,45 @@
+import { resolve } from 'path'
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import AutoImport from 'unplugin-auto-import/vite'
+import vueTypes from 'vite-plugin-vue-type-imports'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  resolve: {
+    extensions: ['.ts', '.vue'],
+  },
+  build: {
+    emptyOutDir: false,
+    lib: {
+      formats: ['es', 'cjs', 'iife'],
+      entry: resolve(__dirname, 'src/index.ts'),
+      fileName: 'vue-flow-background',
+      name: 'vueFlowBackground',
+    },
+    rollupOptions: {
+      // make sure to externalize deps that shouldn't be bundled
+      // into your library
+      external: ['vue', '@vue-flow/core'],
+      output: {
+        dir: './dist',
+        // Provide global variables to use in the UMD build
+        // for externalized deps
+        globals: {
+          'vue': 'Vue',
+          '@vue-flow/core': 'VueFlow',
+        },
+      },
+    },
+  },
+  plugins: [
+    vue({
+      reactivityTransform: true,
+    }),
+    vueTypes(),
+    AutoImport({
+      imports: ['vue', 'vue/macros'],
+      dts: 'src/auto-imports.d.ts',
+    }),
+  ],
+})
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index afdaf329..17530db8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -200,6 +200,25 @@ importers:
       vite-svg-loader: 3.6.0
       vue-tsc: 1.0.11_typescript@4.8.4
 
+  packages/background:
+    specifiers:
+      '@vitejs/plugin-vue': ^3.2.0
+      '@vue-flow/core': workspace:*
+      unplugin-auto-import: ^0.12.0
+      vite: ^3.2.5
+      vite-plugin-vue-type-imports: 0.2.0
+      vue: ^3.2.37
+      vue-tsc: ^1.0.11
+    dependencies:
+      vue: 3.2.40
+    devDependencies:
+      '@vitejs/plugin-vue': 3.2.0_vite@3.2.5+vue@3.2.40
+      '@vue-flow/core': link:../core
+      unplugin-auto-import: 0.12.0
+      vite: 3.2.5
+      vite-plugin-vue-type-imports: 0.2.0_ek75d3noihdfv6qzog663yntom
+      vue-tsc: 1.0.11_typescript@4.8.4
+
   packages/core:
     specifiers:
       '@rollup/plugin-replace': ^5.0.1