v-dragged

Vue directive plugin for drag event detection.

NOTE: This directive listens for mouse/touch events, and sets a handler for when a drag action is detected. This is different from setting draggable on element, in that you need to move the element yourself according to the information v-dragged provides.

Install

npm install --save v-dragged

import Vue from 'vue'
import VDragged from 'v-dragged'

Vue.use(VDragged) 

Example

In your component:

<div v-dragged="onDragged"></div>

{
  // ...other options omitted

  methods: {
    onDragged({ el, deltaX, deltaY, offsetX, offsetY, clientX, clientY, first, last }) {
      if (first) {
        this.isDragging = true
        return
      }
      if (last) {
        this.isDragging = false
        return
      }
      var l = +window.getComputedStyle(el)['left'].slice(0, -2) || 0
      var t = +window.getComputedStyle(el)['top'].slice(0, -2) || 0
      el.style.left = l + deltaX + 'px'
      el.style.top = t + deltaY + 'px'
    }
  }
}

Event Details

The argument passed to the event handler is an object containing the following properties:

el

• The target element on which the directive binds.
• type: HTMLElement

first

• A boolean to indicate whether it is the first move of the drag. (drag starts here).
• type: Boolean

last

• A boolean to indicate whether it is the last move of the drag. (drag ends here).
• type: Boolean

deltaX

• The change of the pointer (mouse/touch)'s x coordinate from the last position.
  It is undefined when first or last is true.
• type: Number

deltaY

• The change of the pointer (mouse/touch)'s y coordinate from the last position.
  It is undefined when first or last is true.
• type: Number

offsetX

• The change of the pointer (mouse/touch)'s x coordinate from the starting position.
  It is undefined when first or last is true.
• type: Number

offsetY

• The change of the pointer (mouse/touch)'s y coordinate from the starting position.
  It is undefined when first or last is true.
• type: Number

clientX

• Current x coordinate of the pointer (mouse/touch).
• type: Number

clientY

• Current y coordinate of the pointer (mouse/touch).
• type: Number

Modifier

prevent

• prevent default events on pointer events (touchstart, touchmove, touchend, mousedown, mousemove, mouseup).

<div v-dragged.prevent="onDragged"></div>