How to implement image gallery using Vue?

In today's Internet era, image display is an integral part of website design. How to effectively display images has become a problem that every website designer must solve. As a form of image display, picture gallery is widely favored by website designers for its good user experience and attractive visual effects. This article will introduce how to use Vue to implement a simple picture gallery.

Step 1: Preparation

The first thing to do is to introduce the required library files into the project. The two library files required in this article are Vue and Photoswipe. Photoswipe is a popular JavaScript library for image galleries that is lightweight, customizable, and supports all major mobile and desktop browsers. In order for this library to be seamlessly integrated with Vue, we need to introduce a small adapter file vue-photoswipe.js.

Step 2: Write the component

Next, we will create a Vue component named Gallery to display the image gallery. The code of the component is as follows:

<template>
  <div class="gallery">
    <div class="grid">
      <div class="grid-item" v-for="(item, index) in items" :key="index" @click="openGallery(index)">
        <img  src="/static/imghwm/default1.png"  data-src="item.thumbnailUrl"  class="lazy"  : alt="How to implement image gallery using Vue?" >
      </div>
    </div>
  </div>
</template>

<script>
import Vue from 'vue'
import PhotoSwipe from 'photoswipe'
import PhotoSwipeUI_Default from 'photoswipe/dist/photoswipe-ui-default'
import 'photoswipe/dist/photoswipe.css'
import 'photoswipe/dist/default-skin/default-skin.css'
import adapter from './vue-photoswipe'

Vue.use(adapter)

export default {
  name: 'Gallery',
  props: {
    items: {
      type: Array,
      required: true
    }
  },
  data () {
    return {
      pswpOptions: {
        //Photoswipe的配置项
      }
    }
  },
  methods: {
    openGallery (index) {
      const pswpElement = document.querySelectorAll('.pswp')[0]
      const gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, this.items, this.pswpOptions)
      gallery.init()
      gallery.goTo(index)
    }
  }
}
</script>

<style scoped>
.gallery {
  margin: 20px auto;
  width: 80%;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  grid-gap: 20px;
}

.grid-item {
  cursor: pointer;
}

.grid-item img {
  width: 100%;
  height: auto;
}
</style>

In this code, we define a component named Gallery. The component receives an items prop, which is an array containing image information. This component uses the third-party library PhotoSwipe, which supports image scaling, enlarging, carousel and other functions. Please note when writing that vue-photoswipe.js references a small PhotoSwipe (only includes functions that can be automatically converted to a single file for use). If you need more functions or download the original code, please make sure you have included PhotoSwipe.

In this component, we use a loop-based method to output the thumbnail of each image, and bind the data using the v-for and v-bind instructions. We also added a method called openGallery that opens a Photoswipe image gallery and locates the image at a specific index. In this method, we use the instantiation method and goTo method in the PhotoSwipe library to control the displayed content.

Finally, we use scoped styles to ensure that the style of this component does not affect other places.

Step 3: Call the component

After completing the writing of the component, we can call the component anywhere on the page and pass in the corresponding data. For example:

<template>
  <div id="app">
    <Gallery :items="items"></Gallery>
  </div>
</template>

<script>
import Gallery from './components/Gallery'

export default {
  name: 'App',
  components: {
    Gallery
  },
  data () {
    return {
      items: [
        {
          src: 'image1-src.jpg',
          w: 1200,
          h: 800,
          title: 'Image1'
        },
        {
          src: 'image2-src.jpg',
          w: 1200,
          h: 800,
          title: 'Image2'
        }
      ]
    }
  }
}
</script>

In this example, we introduced the Gallery component in the App component and passed an array containing image information. By calling this component, we can display a set of images on the page, and users can click on the thumbnails to enter the Photoswipe image gallery to browse, zoom in, and out.

Conclusion

Through the above steps, we have successfully implemented a simple picture gallery component. Although the function of this component is relatively simple, it lays the foundation for solving image display problems. In the actual development process, in order to achieve more complex functions, we may need to further improve and expand this component. In any case, by using Vue and its rich ecosystem, I believe we will be able to create excellent image display effects.

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