In Vue, the CropperJs image initially appears small, but it returns to its original size after editing

Question

In Vue, the CropperJs image initially appears small, but it returns to its original size after editing

I encountered a peculiar issue while working on a website for image cropping using Vue.js and CropperJs. On the homepage, users can select an image to crop and proceed to the next page where a component named ImageCropper.vue is displayed. Strangely, the canvas appears tiny initially. However, when I made a slight modification to the HTML (such as adding a blank line), the image resized itself correctly.

ImageCropper.vue

<template>
    <div class="image-container">
        <img ref="image" :src="source">

    </div>
</template>

<script>
import Cropper from 'cropperjs'

export default {
    name: "ImageCropper",
    props: ["source"],

    data() {
        return {
            cropper: null,
            imageElement: null
        }
    },

    mounted() {
        this.imageElement = this.$refs.image
        this.cropper = new Cropper(this.imageElement, {
                aspectRatio: 1 
        })

    }
}
</script>

Original template view: https://i.stack.imgur.com/5woRw.png

Modified template view (after adding a blank line): https://i.stack.imgur.com/h6THB.png

I attempted to style it with CSS without success. Perhaps my Vue implementation has an issue? This project uses Vue with Vuetify components.

javascript vue.js vuetify.js cropperjs

Answer 1

Answer №1

Encountered an issue where the cropper was initialized while its container was not visible due to the use of Vuetify's stepper. The cropping functionality only appeared after the user clicked on "continue", before which it had display: none. Upon editing, the cropper became visible and was re-initialized when its container was visible, resulting in normal rendering (using hot reloading with Vue CLI). Although I cannot pinpoint the exact cause of this behavior, I am confident it is not an error in my code. It is possible that Cropperjs and Vuetify's stepper may not be fully compatible. To resolve this, I added a `continueClicked` property to my Vuex state with a default value of false. I then attached a click listener to the initial Continue button to set `continueClicked` in Vuex to true. Finally, I used the directive v-if="continueClicked" in the ImageCropper.vue component like this:

<ImageCropper v-if="continueClicked" />

. This ensures that the cropper is rendered only when the Continue button is clicked and `continueClicked` is set to true, making it visible when its container is visible.

Answer 2

Encountered an issue where the cropper was initialized while its container was not visible due to the use of Vuetify's stepper. The cropping functionality only appeared after the user clicked on "continue", before which it had display: none. Upon editing, the cropper became visible and was re-initialized when its container was visible, resulting in normal rendering (using hot reloading with Vue CLI). Although I cannot pinpoint the exact cause of this behavior, I am confident it is not an error in my code. It is possible that Cropperjs and Vuetify's stepper may not be fully compatible. To resolve this, I added a `continueClicked` property to my Vuex state with a default value of false. I then attached a click listener to the initial Continue button to set `continueClicked` in Vuex to true. Finally, I used the directive v-if="continueClicked" in the ImageCropper.vue component like this:

<ImageCropper v-if="continueClicked" />

. This ensures that the cropper is rendered only when the Continue button is clicked and `continueClicked` is set to true, making it visible when its container is visible.

Answer 3

Answer №2

If you're looking for a solution, consider using the vue-cropperjs wrapper.

<template>
 <div>
   <vue-cropper ref="cropper" :src="imageSource" alt="Image Source"></vue-cropper>
   <v-btn @click="saveImage">Save</v-btn>
 </div>
</template>
<script>
  import VueCropper from 'vue-cropperjs';
  import 'cropperjs/dist/cropper.css';

  export default{
    name: "CroppingComponent",
    components: {
            VueCropper
    },
    data() {
      return {
        imageSource: ''
      }
    },
    methods: {
      saveImage: function(){
        this.$refs.cropper.getCroppedCanvas().toBlob((blob) => {

          //Do something with the blob, like attaching it to form data and sending it to the server
          const formData = new FormData();
          formData.append("type", "profile");
          formData.append('file', blob, this.fileName);

        });
      }
    }
  }
</script>

Answer 4

If you're looking for a solution, consider using the vue-cropperjs wrapper.

<template>
 <div>
   <vue-cropper ref="cropper" :src="imageSource" alt="Image Source"></vue-cropper>
   <v-btn @click="saveImage">Save</v-btn>
 </div>
</template>
<script>
  import VueCropper from 'vue-cropperjs';
  import 'cropperjs/dist/cropper.css';

  export default{
    name: "CroppingComponent",
    components: {
            VueCropper
    },
    data() {
      return {
        imageSource: ''
      }
    },
    methods: {
      saveImage: function(){
        this.$refs.cropper.getCroppedCanvas().toBlob((blob) => {

          //Do something with the blob, like attaching it to form data and sending it to the server
          const formData = new FormData();
          formData.append("type", "profile");
          formData.append('file', blob, this.fileName);

        });
      }
    }
  }
</script>

In Vue, the CropperJs image initially appears small, but it returns to its original size after editing

Answer №1

Answer №2

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