If you are looking to crop and upload images like in Instagram, please visit https://github.com/avidofood/vue-cropgram 😜
npm install vue-instagram-cropper
import InstagramCropper from 'vue-instagram-cropper'
Vue.component('instagram-cropper', InstagramCropper);
import { Plugin } from 'vue-instagram-cropper'
Vue.use(Plugin);
<instagram-cropper
:src="cropper"
></instagram-cropper>
with
cropper: 'https://i.picsum.photos/id/468/200/300.jpg',
<instagram-cropper
ref="cropper"
class="w-100 h-100"
:src="cropper"
:quality="4"
:placeholder-font-size="14"
placeholder-color="#000000"
placeholder="Choose or Drag'n'Drop an image"
>
<spinner v-if="loading"/>
</instagram-cropper>
https://avidofood.github.io/vue-instagram-cropper
This package is made to immitate Instagram's cropper.
src
(required:false
, type: String or Object)
You can set the source of the placeholder image here. You can also use objects to set images. Test it by saving the meta-object by calling the method getMetadata()
.
quality
(default:2
)
Multiplies your image output. If your canvas is 600px wide and the quality is set to 2, the output width will be 1200.
-
canvasColor
(default:#F7F7F7
) -
placeholder
(default:Choose an image
) -
placeholderColor
(default:#67ACFD
) -
placeholderFontSize
(default:0
)
Dynamic calculation when it's set to 0.
fileSizeLimit
(default:0
)
If you love overlays, then copy the overlay from the advanced example.
forceCacheBreak
(default:false
)
This is important if you have still CORS issues. But remember the browser is not caching images anymore.
preventWhiteSpace
(default:false
)
Prevents revealing background white space when moving or zooming the image.
init
: Initializedinitial-image-loaded
: Emitted when initial image loaded.file-choose
: File was chosenfile-size-exceed
: File Size Limit was reachedfile-type-mismatch
: Only images are acceptedfile-loaded
: Emitted when a new file is received and read successfullynew-image
: Emitted when a new valid image is received and read successfullynew-image-drawn
: Emitted when a new image is drawn on canvas for the first time.image-error
: Emitted when an error occurs for the image (onerror
-listener)image-remove
: Emitted when image is removed from croppa.image-remove-onload
: Emitted when image is removed from croppa due to file-loaded or change ofsrc
.move
:zoom
:draw
: Emitted on every view updateloading-start
: Emitted when image loading phase starts.loading-end
: Emitted when image loading phase ends.update
: When a new image is drawn, you get get the metadata via the event.
You need to set ref=cropper
to the HTML tag <instagram-cropper>
. After that you can call all methods like this this.$refs.cropper.hasImage()
.
getCanvas()
: returns the canvas objectgetContext()
: returns the canvas context objectgetChosenFile()
: returns File objectchooseFile()
: Opens the file chooser window to choose an image.refresh()
: Reinitialize the component. Useful when you want to change initial image.hasImage()
: Return boolean value indicating whether currently there is a image.generateDataUrl( type: string, compressionRate: number )
:- Returns a data-URL containing a representation of the image in the format specified by the type parameter (defaults to png).
compressionRate
defaults to 1, you can pass a number between 0 and 1 to get a compressed output image.
generateBlob( callback: function, mimeType: string, compressionRate: number )
:- Creates a Blob object representing the image contained in the canvas.
- If there is no image, the first argument of callback function is null.
promisedBlob( mimeType: string, compressionRate: number )
:- This method returns a Promise wrapping around generateBlob(), so that you can use async/await syntax instead of a callback to get blob data, it's simpler.
- If there is no image, the first argument of callback function is null.
getMetadata()
: Gives an object back with all important information to create the image again at the same scale and position. Useful, if you are using a list of images.
const blob = await this.$refs.cropper.promisedBlob()
addClipPlugin(func)
: Add clip plugin to clip the image. Example:
// Add a clip plugin to make a circle clip on image
onInit(vm) {
this.$refs.cropper.addClipPlugin(function (ctx, x, y, w, h) {
/*
* ctx: canvas context
* x: start point (top-left corner) x coordination
* y: start point (top-left corner) y coordination
* w: croppa width
* h: croppa height
*/
ctx.beginPath();
ctx.arc(x + w / 2, y + h / 2, w / 2, 0, 2 * Math.PI, true);
ctx.closePath();
})
},
Note: in the plugin function you should always start with ctx.beginPath() and end with ctx.closePath().
Note: it only works when prevent-white-space is true.
I have only limited time to develop this package further. It would mean a lot to me, if you would help me to improve it step by step. Here is a small list, what is still missing:
- When zooming, the grid should be visible (Only moving shows the grid right now)
- The maximum zoom limit is not the same as in Instagram
- We need the prop
forceAspect
. Important if you want to "clip" the image to a specific aspect ratio. Needed for multiple images with vue-cropgram
If you discover any security related issues, please don't email me. I'm afraid 😱. avidofood@protonmail.com
Now comes the best part! 😍 This package is based on
- https://github.com/zhanziyang/vue-croppa (but simplefied)
Oh come on. You read everything?? If you liked it so far, hit the ⭐️ button to give me a 🤩 face.