How to use Vue to implement picture display wall special effects

How to use Vue to implement picture display wall special effects

Introduction
With the development of the Internet, pictures have become an indispensable part of people's daily lives. In web design, how to display pictures skillfully has become a very important issue. This article will introduce in detail how to use the Vue framework to implement picture display wall special effects, and attach specific code examples.

Requirements Analysis
We hope to display a series of pictures on the web page. The specific requirements are as follows:

1. The pictures are displayed in a grid form, and each picture occupies equal space.
2. When the mouse hovers over a picture, the picture will be enlarged and the corresponding title will be displayed.
3. When you click on a picture, the original picture will be displayed in the form of a pop-up box.

Vue component design
Based on demand analysis, we can divide the image wall component into three sub-components: ImageWall, ImageItem and ImageModal.

ImageWall component is the container of the entire picture wall and is responsible for displaying all pictures. Its template is as follows:

<template>
  <div class="image-wall">
    <ImageItem v-for="image in images" :key="image.id" :image="image" @click="showModal(image.id)"/>
  </div>
</template>

In the ImageWall component, we use the v-for instruction to loop through the images array and render each The ImageItem component of a picture, and listens to the click event of the picture through the @click event.

ImageItemThe component is each picture in the picture wall, responsible for displaying the picture and handling mouse hover events. Its template is as follows:

<template>
  <div class="image-item" @mouseenter="mouseEnter" @mouseleave="mouseLeave">
    <img class="thumbnail lazy"  src="/static/imghw/default1.png"  data-src="image.thumbnail"  : alt="thumbnail">
    <div v-if="isHover" class="title">{{ image.title }}</div>
  </div>
</template>

ImageItemThe component uses @mouseenter and @mouseleave events to listen for events triggered when the mouse enters and leaves. . When the mouse enters, the isHover variable will change to true and the title will be displayed.

ImageModal component is the original image display pop-up window that pops up when you click on the image. Its template is as follows:

<template>
  <div class="image-modal" v-if="show">
    <div class="modal-content">
      <img src="/static/imghw/default1.png"  data-src="currentImage.largeImg"  class="lazy"  : alt="largeImg">
      <div class="title">{{ currentImage.title }}</div>
    </div>
    <button class="close" @click="closeModal">关闭</button>
  </div>
</template>

In the ImageModal component, we Use the v-if command to control the display and hiding of pop-up windows. When the close button is clicked, the closeModal method will be triggered, and the show variable will be set to false to realize the closing function of the pop-up window.

Code Implementation
In the Vue project, we need to combine the above components in a reasonable way. Combined in the App.vue component, the sample code is as follows:

<template>
  <div id="app">
    <ImageWall :images="images" @showModal="showModal"/>
    <ImageModal :currentImage="currentImage" :show="showModal" @closeModal="closeModal"/>
  </div>
</template>

<script>
import ImageWall from './components/ImageWall.vue';
import ImageModal from './components/ImageModal.vue';

export default {
  name: 'App',
  components: {
    ImageWall,
    ImageModal
  },
  data() {
    return {
      images: [{
        id: 1,
        thumbnail: 'thumbnail1.jpg',
        largeImg: 'largeImg1.jpg',
        title: '图片1'
      },
      {
        id: 2,
        thumbnail: 'thumbnail2.jpg',
        largeImg: 'largeImg2.jpg',
        title: '图片2'
      },
      // ... 更多图片
      ],
      currentImage: null,
      showModal: false
    };
  },
  methods: {
    showModal(imageId) {
      this.currentImage = this.images.find(image => image.id === imageId);
      this.showModal = true;
    },
    closeModal() {
      this.showModal = false;
    }
  }
};
</script>

Summary
Through the above code implementation, we successfully used the Vue framework to implement the picture display wall special effects, and All requirements in the needs analysis were met. Of course, during the actual development process, we can further optimize and expand the code according to specific needs.

Note: The above code is only a sample code. The specific file path and image resources need to be adjusted according to the actual situation of the project.

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