Vue.js Image Cropping Components – vuejs-clipper

Vue.js Image Cropping Components – vuejs-clipper

A set of Vue.js image clipping components using Vue-Rx.

vuejs-clipper

Vue.js image clipping components using Vue-Rx.

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  • Add image clipping components to your Vue application in nothing flat.
  • Touch devices supported and fully responsive.

Demo

Menu

Version Released

  • 0.2.9
    • New prop border-color for clipper-fixed
    • Fixed issue #4
  • 0.2.8
    • New prop accept for clipper-upload (issue #1)
    • Add EXIF image transformation feature to clipper-upload (issue #2)

Notice

Before using the plugin & components, here's something you should know :

  • It's based on vue-rx.
  • Use vuejs-clipper plugin also add vue-rx plugin to vue.
  • Components are responsive base on width instead of height.
  • You can clip your own images (local uploaded images or images served on your site), but you cannot clip a cross-origin image.
  • Components' input is an image URL, output is a canvas element, they only help you clip images to canvas, you need to handle other things like transform file input to image URL or transform output canvas to image by yourself.

Installation

NPM & ESM

install vuejs-clipper

$npm install vuejs-clipper --save

need sass-loader, if you haven't installed :

$npm install -D sass-loader node-sass

(1) use vuejs-clipper plugin

Use vuejs-clipper plugin also add vue-rx plugin to Vue.

By default it will register all components to Vue global scope.

import Vue from 'vue'
import VuejsClipper from 'vuejs-clipper'
// install
Vue.use(VuejsClipper)

register some components to global with default component name

Vue.use(VuejsClipper ,{
 components: {
    clipperBasic: true,
    clipperPreview: true
 }
})

with customized component name

Vue.use(VuejsClipper ,{
 components: {
  clipperBasic: 'image-clipper-basic',
  clipperPreview: 'my-preview'
 }
})

not register any components, but with some plugin options

Vue.use(VuejsClipper ,{
  components: null,
 parentPropName: 'myCustomerName'
  /*
   parentPropName:
    Add property to Vue instance to store `clipper-preview` list.
    You can change the property name
    default: '_imgPreviewLists'
  */
})

(2) separately import components

install vue-rx and it's peer dependency rxjs

$npm install --save vue-rx rx-js

use vue-rx

import Vue from 'vue'
import VueRx from 'vue-rx'
// install vue-rx
Vue.use(VueRx)

then import in your components (SFC)

import { clipperBasic, clipperPreview } from 'vuejs-clipper'

export default {
  components: {
    clipperBasic,
    clipperPreview
  }
}

Script

Include vuejs-clipper umd script after Vue.js.

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script src="./dist/vuejs-clipper.umd.min.js"></script>
<link rel="stylesheet" href="./dist/vuejs-clipper.css">

Use in html/template

<clipper-basic src="example.jpg"></clipper-basic>

Components

  • clipperBasic
  • clipperFixed
  • clipperPreview
  • clipperUpload
  • clipperRange

See detail examples.

clipper-basic

a image clipping component

import { clipperBasic } from 'vuejs-clipper'
  • Props
Prop Type default Description
src string image src
preview string matches clipper-preview's name to show preview image.
border number 1 border width
outline number 6 outlines near by the border to help user zooming.
corner boolean true show corner layout
grid boolean true show grid layout
ratio number ratio of clipping area (width/height). ex: 1, 4/3 .
mode 'normal'/'switch' 'normal' if ratio is set, this prop will affect how clipping area zoom.
bg-color string 'white' background color
shadow string 'rgba(0,0,0,0.4)' shadow color
rotate number 0 rotate degree
scale number 1 transform scale
touch-create boolean true enable/disable create new clipping area on touch device
  • Methods
method argument return Description
clip canvas element get clipping canvas element

set ref to use component methods

<clipper-basic ref="clipper"></clipper-basic>

in your Vue instance methods

const canvas = this.$refs.clipper.clip()
  • Event
event parameters Description
load $event image onload
error $error image onerror

usage :

<clipper-basic @error="errorCb" @load="loadCb"></clipper-basic>
  • Data
data type default description
imgRatio number NaN upload image's ratio (image naturalWidth/natrualHeight). Default value is NaN, after the load event the value will be set.

usage :

this.$refs.clipper.imgRatio
  • Slot
slot Description
placeholder if no src provided, show placeholder
<clipper-basic src="">
  <div slot="placeholder">No image</div>
</clipper-basic>

clipper-fixed

an image clipping component

import { clipperFixed } from 'vuejs-clipper'
  • Props
Prop Type default Description
src string image src
preview string matches clipper-preview's name to show preview image.
ratio number 1 ratio of clipping area (width/height). ex: 1, 4/3 .
zoom-rate number 0.04 zooming faster if this value is larger
min-scale number 0.1 minimum transform scale
border number 1 border width
border-color string 'white' border color
grid boolean true show grid layout
round boolean false Use a round clipping area, this only effect the component layout, clipping results are still rectangular.
bg-color string 'white' background color
shadow string 'rgba(0,0,0,0.4)' shadow color
rotate number 0 rotate degree
  • Method
method argument return Description
clip canvas element get clipping canvas element
  • Event
event parameters Description
load $event image onload
error $error image onerror
  • Data
data type default description
imgRatio number NaN upload image's ratio (image naturalWidth/natrualHeight). Default value is NaN, after the load event the value will be set.
  • Slot
slot Description
placeholder if no src provided, show placeholder

clipper-preview

preview clipping result

import { clipperPreview } from 'vuejs-clipper'
  • Props
Prop Type default Description
name string name that matches clipper component's preview property
  • Slot
slot Description
placeholder if no src provided, show placeholder

clipper-range

a simple input range component

import { clipperPreview } from 'vuejs-clipper'

use v-model binding data with clipper-range

  • Props
Prop Type default Description
max number 10 maximum value of range
min number 0 minimum value of range

clipper-upload

a new component in 0.2.0

an upload button that transform image files to URL

import { clipperUpload } from 'vuejs-clipper'

use v-model binding data with clipper-upload

  • Props
Prop Type default Description
check boolean true Check if upload file is a image. If set to true, when upload files that are not images, it will do nothing, so you will not get an error event on clipping component.
accept string '*' Bind accept attribute to file input tag.
exif boolean true Transform EXIF image to correct orientation when uploading.

Github Repository

Tags: #VueJs