npm package: @piggaycheng/vue3-drr-grid-layout
Description: Vue3 grid layout with resize, drag and responsive
Author: piggaycheng
Latest version: 1.9.9

# vue3-drr-grid-layout
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Grid layout for vue 3 with draggable, resize, responsive events

Module use source code from [VueGridLayout](https://www.npmjs.com/package/vue-grid-layout)

Rewrote to TypeScript, Composition API and migrated to Vue3


### Usage
```js
  import { createApp } from 'vue'
  import App from './App.vue'
  import GridLayout from 'vue3-drr-grid-layout'
  import 'vue3-drr-grid-layout/dist/style.css'

  const app = createApp(App)

  app.use(GridLayout)

  app.mount('#app')
```
```vue
  <template>
    <grid-layout
      v-model:layout="layout"
      :col-num="12"
      :row-height="30"
      @resize="resize"
      @move="move"
      @moved="moved"
    >
      <template #item="{ item }">
        {{ item.i }}
      </template>
    </grid-layout>
  </template>
  <script>
    export default {
      name: 'App',
      data () {
        return {
          layout: [
            { x: 0, y: 0, w: 2, h: 2, i: 0 },
            { x: 2, y: 0, w: 2, h: 4, i: 1 },
            { x: 4, y: 0, w: 2, h: 5, i: 2 },
            { x: 6, y: 0, w: 2, h: 3, i: 3 },
            { x: 8, y: 0, w: 2, h: 3, i: 4 },
            { x: 8, y: 0, w: 2, h: 3, i: 5 },
            { x: 0, y: 5, w: 2, h: 5, i: 6 },
            { x: 2, y: 5, w: 2, h: 5, i: 7 },
            { x: 4, y: 5, w: 2, h: 5, i: 8 },
            { x: 6, y: 3, w: 2, h: 4, i: 9 }
          ]
        }
      }
    }
  </script>
```
or
```vue
  <template>
    <grid-layout
            v-model:layout="layout"
            :col-num="12"
            :row-height="30"
    >
      <template #default="{ gridItemProps }">
        <!-- | gridItemProps props from GridLayout | -->
        <!--breakpointCols: props.cols-->
        <!--colNum: props.colNum-->
        <!--containerWidth: width.value-->
        <!--isDraggable: props.isDraggable-->
        <!--isResizable: props.isResizable-->
        <!--lastBreakpoint: lastBreakpoint.value-->
        <!--margin: props.margin-->
        <!--maxRows: props.maxRows-->
        <!--responsive: props.responsive-->
        <!--rowHeight: props.rowHeight-->
        <!--useCssTransforms: props.useCssTransforms-->
        <!--width: width.value-->
        <grid-item
          v-for="item in layout"
          :key="item.i"
          v-bind="gridItemProps"
          :x="item.x"
          :y="item.y"
          :w="item.w"
          :h="item.h"
          :i="item.i"
          @resize="resize"
          @move="move"
          @moved="moved"
        >
          {{ item.i }}
        </grid-item>
      </template>
    </grid-layout>
  </template>
  <script>
  export default {
    name: 'App',
    data () {
      return {
        layout: [
          { x: 0, y: 0, w: 2, h: 2, i: 0 },
          { x: 2, y: 0, w: 2, h: 4, i: 1 },
          { x: 4, y: 0, w: 2, h: 5, i: 2 },
          { x: 6, y: 0, w: 2, h: 3, i: 3 },
          { x: 8, y: 0, w: 2, h: 3, i: 4 },
          { x: 8, y: 0, w: 2, h: 3, i: 5 },
          { x: 0, y: 5, w: 2, h: 5, i: 6 },
          { x: 2, y: 5, w: 2, h: 5, i: 7 },
          { x: 4, y: 5, w: 2, h: 5, i: 8 },
          { x: 6, y: 3, w: 2, h: 4, i: 9 }
        ]
      }
    }
  }
  </script>
```

### Grid Layout Props

```js
//
// Required props
//
// This is grid layout for not responsive pages
layout: {
    x: number
    y: number
    w: number
    h: number
    i: number
    isDraggable?: boolean
    isResizable?: boolean
    maxH?: number
    maxW?: number
    minH?: number
    minW?: number
    moved?: boolean
    static?: boolea
}
// Number of columns
colNum: number

//
// Optional props
//
autoSize: boolean = true
isDraggable: boolean = true
isDraggable: boolean = true
margin: [number, number] = [10, 10]
maxRows: number = Infinity
preventCollision: boolean = true
rowHeight: number = 150
useCssTransforms: boolean = true
verticalCompact: boolean = true
// swaps grid items standing next to each other when moving horizontally
horizontalShift: boolean = false
```

### Responsive grid layout props
```js
// To enable responsive mode, the responsive prop must be true.
responsive: boolean = false
// 6 display widths
// Window witch > lg component use layout prop
breakpoints: object = { lg: 1200, md: 996, sm: 768, xs: 480, xxs: 0 }
// colNum by display width
cols: object = { lg: 12, md: 10, sm: 6, xs: 4, xxs: 2 }
// Responsive layout is a { [keyof breakpoints]: layout }
// { lg: layout, md: layout, sm: layout, xs: layout, xss: layout }
responsiveLayouts: object = {}
```

### Intersection observer grid layout props
[Documentation](https://developer.mozilla.org/ru/docs/Web/API/Intersection_Observer_API)
```js
// To enable intersection observer mode, the useObserver prop must be true.
useObserver: boolean = false
// Intersection observer config { ...propsConfig, ...defaultConfig }
intersectionObserverConfig: object = { root: null, rootMargin: '8px', threshold: 0.40 }
```

### Grid layout emits
- **@container-resized**
    * **When layout container was resized**
```ts
    {
        i: number // grid item index
        h: number // grid item height from propss
        w: number // grid item width from props
        height: number // grid item height
        width: number // grid item width
     }
```
- **@resize**
    * **Grid item resize event**
```ts
    i: number // grid item index
    h: number // grid item height from propss
    w: number // grid item width from props
    newHeight: number // grid item height
    newWidth: number // grid item width   
```
- **@resized**
    * **Grid item resizeend event**
```ts
    i: number // grid item index
    h: number // grid item height from propss
    w: number // grid item width from props
    newHeight: number // grid item height
    newWidth: number // grid item width   
```
- **@move**
    * **Grid item drag event**
```ts
    i: number // grid item index
    x: number // grid item x position
    y: number // grid item y position 
```
- **@moved**
    * **Grid item dragend event**
```ts
    i: number // grid item index
    x: number // grid item x position
    y: number // grid item y position 
``` 
- **@update:layout**
  * **Update layout, you can use v-model:layout="layout"**
```ts
    layout: Layout // see props
``` 
- **@layout-ready**
  * **When layout is ready**
```ts
    layout: Layout // see props
``` 
- **@update:breakpoint**
  * **Update breakpoints, you can use v-model:breakpoint="layout"**
```ts
    newBreakpoint: Breakpoints // see props
    layout: Layout // see props
``` 
- **Layout life cycles**
  * **@layout-created**
  * **@layout-before-mount**
  * **@layout-mounted**
```ts
    layout: Layout // see props
```
- **@intersection-observe**
  * **When grid item appeared in the viewport**
```ts
  observeItems: number[] // grid items indexes
``` 
- **@intersection-unobserve**
  * **When grid item is missing in the viewport**
```ts
  unobserveItems: number[] // grid items indexes
``` 
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