How to use jsmind to realize the zoom and pan operations of mind maps in Vue?

How to use jsmind to realize the zoom and pan operations of mind maps in Vue?

Introduction:
Mind map is a commonly used tool that can help us organize and display our thinking and information in a graphical way. Using the jsmind library in a Vue project can easily create and manage mind maps, and it can also enhance its interactivity through some specific methods. This article will introduce how to use jsmind to realize the zoom and pan operations of mind maps in Vue.

Step 1: Introduce jsmind and jquery libraries
First, introduce jsmind library and jquery library into the Vue project. It can be installed via npm or imported directly via CDN.

<script src="https://cdn.jsdelivr.net/npm/jquery"></script>
<script src="https://cdn.jsdelivr.net/npm/jsmind/dist/jsmind.js"></script>
<link href="https://cdn.jsdelivr.net/npm/jsmind/dist/jsmind.css" rel="stylesheet"/>

Step 2: Create a mind map container
Create a container in the template of the Vue component to store the mind map. This container can be a div element.

<template>
  <div id="jsmind_container"></div>
</template>

Step 3: Initialize the mind map
In the mounted life cycle of the Vue component, initialize the mind map through the jsmind library. First, define a method to initialize jsmind.

mounted() {
  this.initMindMap();
},
methods: {
  initMindMap() {
    this.mind = jsMind.show({
      container: 'jsmind_container',
      editable: true,
      theme: 'orange'
    });
  },
}

Step 4: Implement zoom and pan operations
In the mounted life cycle of the Vue component, initialize the mind map through the jsmind library. First, define a method to initialize jsmind.

mounted() {
  this.initMindMap();
  this.initZoomAndPan();
},
methods: {
  initZoomAndPan() {
    const mindContainer = $('#jsmind_container');
    const mindView = this.mind.view;
    const zoomInButton = $('#zoom_in_button');
    const zoomOutButton = $('#zoom_out_button');
    const panUpButton = $('#pan_up_button');
    const panDownButton = $('#pan_down_button');
    const panLeftButton = $('#pan_left_button');
    const panRightButton = $('#pan_right_button');

    // 缩放
    zoomInButton.on('click', () => {
      mindView.zoomIn();
    });
    zoomOutButton.on('click', () => {
      mindView.zoomOut();
    });

    // 平移
    let panX = 0;
    let panY = 0;
    panUpButton.on('click', () => {
      panY += 100;
      mindContainer.css('transform', `translate(${panX}px, ${panY}px)`);
    });
    panDownButton.on('click', () => {
      panY -= 100;
      mindContainer.css('transform', `translate(${panX}px, ${panY}px)`);
    });
    panLeftButton.on('click', () => {
      panX += 100;
      mindContainer.css('transform', `translate(${panX}px, ${panY}px)`);
    });
    panRightButton.on('click', () => {
      panX -= 100;
      mindContainer.css('transform', `translate(${panX}px, ${panY}px)`);
    });
  },
}

Step 5: Add zoom and pan buttons
Add zoom and pan buttons in the template of the Vue component, and click the buttons to achieve zoom and pan operations.

<template>
  <div>
    <div id="jsmind_container"></div>
    <div>
      <button id="zoom_in_button">放大</button>
      <button id="zoom_out_button">缩小</button>
      <button id="pan_up_button">上移</button>
      <button id="pan_down_button">下移</button>
      <button id="pan_left_button">左移</button>
      <button id="pan_right_button">右移</button>
    </div>
  </div>
</template>

Summary:
Through the above steps, we can use jsmind to realize the zoom and pan operations of the mind map in the Vue project. First introduce the jsmind and jquery libraries, then create a mind map container, and initialize the mind map and zoom and pan operations in the mounted life cycle. Finally, add corresponding buttons to the template to trigger zoom and pan operations. In this way, users can zoom and pan the mind map through buttons.

The above are the detailed steps and code examples for using jsmind to realize the zoom and pan operations of mind maps in Vue. Hope this helps!

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