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一步步实现，为WordPress打造内嵌的在线流程图与UI原型设计工具

应用软件 EXCHANGES® · 2026年1月25日 22:00 · 1阅读 · 0评论

一步步实现：为WordPress打造内嵌的在线流程图与UI原型设计工具

引言：为什么WordPress需要内置设计工具？

在当今数字化时代，网站不仅仅是信息展示平台，更是用户体验和交互设计的重要载体。对于WordPress用户而言，虽然市面上有众多第三方设计工具，但频繁切换平台、格式兼容性问题以及额外成本常常成为工作流程中的痛点。想象一下，如果能在WordPress编辑器中直接创建流程图、线框图和UI原型，将极大提升内容创作效率和协作便利性。

本文将通过详细的代码实现步骤，展示如何为WordPress开发一个内嵌的在线设计工具，让用户无需离开WordPress环境就能完成专业的设计工作。我们将从需求分析开始，逐步深入到架构设计、核心功能实现和优化方案，最终打造一个功能完善、性能优异的WordPress设计工具插件。

第一章：项目规划与需求分析

1.1 核心功能需求

在开始编码之前，我们需要明确工具的核心功能：

  1. 流程图绘制：支持基本形状、连接线、文本标注
  2. UI原型设计：提供常用UI组件库（按钮、输入框、导航栏等）
  3. 实时协作：支持多用户同时编辑（可选高级功能）
  4. 导出功能：支持PNG、SVG、PDF格式导出
  5. 版本控制：设计稿的版本管理和回溯
  6. 与WordPress内容集成：可将设计直接插入文章或页面

1.2 技术选型与架构设计

考虑到工具需要在浏览器中运行，我们选择以下技术栈：

  • 前端框架：React + TypeScript（提供良好的组件化开发和类型安全）
  • 绘图库：Fabric.js 或 Konva.js（处理Canvas绘图操作）
  • 后端：WordPress REST API + 自定义端点
  • 数据存储：WordPress数据库自定义表 + 文件系统存储
  • 实时协作：WebSocket（使用Pusher或Socket.io）

1.3 开发环境搭建

首先，我们需要设置WordPress插件开发环境：

<?php
/**
 * Plugin Name: WP Design Studio
 * Plugin URI: https://example.com/wp-design-studio
 * Description: 内嵌的在线流程图与UI原型设计工具
 * Version: 1.0.0
 * Author: Your Name
 * License: GPL v2 or later
 */

// 防止直接访问
if (!defined('ABSPATH')) {
    exit;
}

// 定义插件常量
define('WPDS_VERSION', '1.0.0');
define('WPDS_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('WPDS_PLUGIN_URL', plugin_dir_url(__FILE__));

第二章：数据库设计与后端开发

2.1 创建自定义数据库表

我们需要存储设计项目的数据结构：

// 在插件激活时创建数据库表
register_activation_hook(__FILE__, 'wpds_create_tables');

function wpds_create_tables() {
    global $wpdb;
    
    $charset_collate = $wpdb->get_charset_collate();
    $table_name = $wpdb->prefix . 'wpds_designs';
    
    $sql = "CREATE TABLE IF NOT EXISTS $table_name (
        id bigint(20) NOT NULL AUTO_INCREMENT,
        user_id bigint(20) NOT NULL,
        title varchar(255) NOT NULL,
        type varchar(50) NOT NULL DEFAULT 'flowchart',
        content longtext NOT NULL,
        thumbnail varchar(500) DEFAULT NULL,
        settings text DEFAULT NULL,
        created_at datetime DEFAULT CURRENT_TIMESTAMP,
        updated_at datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        PRIMARY KEY (id),
        KEY user_id (user_id),
        KEY type (type)
    ) $charset_collate;";
    
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);
    
    // 创建版本历史表
    $history_table = $wpdb->prefix . 'wpds_design_history';
    $sql_history = "CREATE TABLE IF NOT EXISTS $history_table (
        id bigint(20) NOT NULL AUTO_INCREMENT,
        design_id bigint(20) NOT NULL,
        version int(11) NOT NULL,
        content longtext NOT NULL,
        created_at datetime DEFAULT CURRENT_TIMESTAMP,
        user_id bigint(20) NOT NULL,
        PRIMARY KEY (id),
        KEY design_id (design_id),
        KEY version (version)
    ) $charset_collate;";
    
    dbDelta($sql_history);
}

2.2 实现REST API端点

为前端提供数据交互接口：

// 注册REST API路由
add_action('rest_api_init', 'wpds_register_rest_routes');

function wpds_register_rest_routes() {
    // 获取设计列表
    register_rest_route('wpds/v1', '/designs', array(
        'methods' => 'GET',
        'callback' => 'wpds_get_designs',
        'permission_callback' => function () {
            return current_user_can('edit_posts');
        }
    ));
    
    // 获取单个设计
    register_rest_route('wpds/v1', '/designs/(?P<id>d+)', array(
        'methods' => 'GET',
        'callback' => 'wpds_get_design',
        'permission_callback' => function () {
            return current_user_can('edit_posts');
        }
    ));
    
    // 创建/更新设计
    register_rest_route('wpds/v1', '/designs', array(
        'methods' => 'POST',
        'callback' => 'wpds_save_design',
        'permission_callback' => function () {
            return current_user_can('edit_posts');
        }
    ));
    
    // 删除设计
    register_rest_route('wpds/v1', '/designs/(?P<id>d+)', array(
        'methods' => 'DELETE',
        'callback' => 'wpds_delete_design',
        'permission_callback' function () {
            return current_user_can('delete_posts');
        }
    ));
}

// 获取设计列表的实现
function wpds_get_designs($request) {
    global $wpdb;
    $table_name = $wpdb->prefix . 'wpds_designs';
    
    $user_id = get_current_user_id();
    $page = $request->get_param('page') ? intval($request->get_param('page')) : 1;
    $per_page = $request->get_param('per_page') ? intval($request->get_param('per_page')) : 20;
    $offset = ($page - 1) * $per_page;
    
    $designs = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $table_name WHERE user_id = %d ORDER BY updated_at DESC LIMIT %d OFFSET %d",
            $user_id, $per_page, $offset
        )
    );
    
    $total = $wpdb->get_var(
        $wpdb->prepare(
            "SELECT COUNT(*) FROM $table_name WHERE user_id = %d",
            $user_id
        )
    );
    
    return new WP_REST_Response(array(
        'designs' => $designs,
        'pagination' => array(
            'total' => $total,
            'pages' => ceil($total / $per_page),
            'current' => $page,
            'per_page' => $per_page
        )
    ), 200);
}

第三章：前端架构与核心组件开发

3.1 设置React开发环境

由于WordPress传统开发方式与现代前端框架存在差异，我们需要特殊配置：

// webpack.config.js
const path = require('path');
const webpack = require('webpack');

module.exports = {
  entry: {
    'wpds-editor': './src/editor/index.tsx',
    'wpds-block': './src/block/index.tsx',
  },
  output: {
    path: path.resolve(__dirname, 'assets/js'),
    filename: '[name].js',
  },
  externals: {
    'react': 'React',
    'react-dom': 'ReactDOM',
    'wp': 'wp',
  },
  module: {
    rules: [
      {
        test: /.(ts|tsx)$/,
        exclude: /node_modules/,
        use: 'ts-loader',
      },
      {
        test: /.css$/,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.jsx'],
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
    }),
  ],
};

3.2 核心编辑器组件

实现设计工具的核心画布组件：

// src/editor/components/DesignCanvas.tsx
import React, { useRef, useEffect, useState } from 'react';
import { FabricCanvas } from './FabricCanvas';
import { Toolbar } from './Toolbar';
import { PropertiesPanel } from './PropertiesPanel';
import { ShapesLibrary } from './ShapesLibrary';
import { saveDesign, loadDesign } from '../services/api';

interface DesignCanvasProps {
  designId?: number;
  onSave?: (design: any) => void;
}

export const DesignCanvas: React.FC<DesignCanvasProps> = ({ designId, onSave }) => {
  const canvasRef = useRef<any>(null);
  const [selectedTool, setSelectedTool] = useState<string>('select');
  const [selectedObject, setSelectedObject] = useState<any>(null);
  const [designData, setDesignData] = useState<any>(null);
  const [isLoading, setIsLoading] = useState<boolean>(false);

  // 加载设计数据
  useEffect(() => {
    if (designId) {
      loadDesignData(designId);
    }
  }, [designId]);

  const loadDesignData = async (id: number) => {
    setIsLoading(true);
    try {
      const data = await loadDesign(id);
      setDesignData(data);
      if (canvasRef.current) {
        canvasRef.current.loadFromJSON(data.content);
      }
    } catch (error) {
      console.error('Failed to load design:', error);
    } finally {
      setIsLoading(false);
    }
  };

  const handleSave = async () => {
    if (!canvasRef.current) return;
    
    const content = canvasRef.current.toJSON();
    const design = {
      title: designData?.title || '未命名设计',
      type: 'flowchart',
      content: JSON.stringify(content),
      settings: JSON.stringify({}),
    };
    
    try {
      const savedDesign = await saveDesign(design, designId);
      setDesignData(savedDesign);
      if (onSave) {
        onSave(savedDesign);
      }
      alert('设计已保存！');
    } catch (error) {
      console.error('Failed to save design:', error);
      alert('保存失败，请重试！');
    }
  };

  const handleAddShape = (shapeType: string) => {
    if (!canvasRef.current) return;
    
    const canvas = canvasRef.current;
    let shape;
    
    switch (shapeType) {
      case 'rectangle':
        shape = new fabric.Rect({
          left: 100,
          top: 100,
          width: 100,
          height: 60,
          fill: '#ffffff',
          stroke: '#333333',
          strokeWidth: 2,
        });
        break;
      case 'circle':
        shape = new fabric.Circle({
          left: 100,
          top: 100,
          radius: 50,
          fill: '#ffffff',
          stroke: '#333333',
          strokeWidth: 2,
        });
        break;
      case 'arrow':
        // 箭头实现
        break;
      default:
        return;
    }
    
    canvas.add(shape);
    canvas.setActiveObject(shape);
    setSelectedObject(shape);
    canvas.renderAll();
  };

  return (
    <div className="wpds-design-canvas">
      {isLoading ? (
        <div className="wpds-loading">加载中...</div>
      ) : (
        <>
          <Toolbar
            selectedTool={selectedTool}
            onToolSelect={setSelectedTool}
            onSave={handleSave}
          />
          <div className="wpds-canvas-container">
            <ShapesLibrary onShapeAdd={handleAddShape} />
            <FabricCanvas
              ref={canvasRef}
              selectedTool={selectedTool}
              onObjectSelect={setSelectedObject}
            />
            <PropertiesPanel
              selectedObject={selectedObject}
              onPropertyChange={(properties) => {
                if (selectedObject && canvasRef.current) {
                  selectedObject.set(properties);
                  canvasRef.current.renderAll();
                }
              }}
            />
          </div>
        </>
      )}
    </div>
  );
};

3.3 Fabric.js画布集成

// src/editor/components/FabricCanvas.tsx
import React, { forwardRef, useImperativeHandle, useEffect } from 'react';
import { fabric } from 'fabric';

interface FabricCanvasProps {
  selectedTool: string;
  onObjectSelect: (object: any) => void;
}

export const FabricCanvas = forwardRef((props: FabricCanvasProps, ref) => {
  const canvasRef = React.useRef<HTMLCanvasElement>(null);
  const fabricCanvasRef = React.useRef<fabric.Canvas | null>(null);

  // 初始化画布
  useEffect(() => {
    if (!canvasRef.current) return;

    const canvas = new fabric.Canvas(canvasRef.current, {
      width: 800,
      height: 600,
      backgroundColor: '#f5f5f5',
      selection: true,
    });

    fabricCanvasRef.current = canvas;

    // 设置事件监听
    canvas.on('selection:created', (e) => {
      props.onObjectSelect(e.selected[0]);
    });

    canvas.on('selection:updated', (e) => {
      props.onObjectSelect(e.selected[0]);
    });

    canvas.on('selection:cleared', () => {
      props.onObjectSelect(null);
    });

    // 根据选择的工具设置画布模式
    updateCanvasMode(props.selectedTool);

    return () => {
      canvas.dispose();
    };
  }, []);

  // 更新工具选择
  useEffect(() => {
    updateCanvasMode(props.selectedTool);
  }, [props.selectedTool]);

  const updateCanvasMode = (tool: string) => {
    if (!fabricCanvasRef.current) return;
    
    const canvas = fabricCanvasRef.current;
    
    switch (tool) {
      case 'select':
        canvas.isDrawingMode = false;
        canvas.selection = true;
        canvas.defaultCursor = 'default';
        break;
      case 'rectangle':
        canvas.isDrawingMode = false;
        canvas.selection = false;
        canvas.defaultCursor = 'crosshair';
        setupRectangleDrawing(canvas);
        break;
      case 'line':
        canvas.isDrawingMode = true;
        canvas.freeDrawingBrush = new fabric.PencilBrush(canvas);
        canvas.freeDrawingBrush.width = 2;
        canvas.freeDrawingBrush.color = '#333333';
        break;
      case 'text':
        canvas.isDrawingMode = false;
        canvas.selection = false;
        canvas.defaultCursor = 'text';
        setupTextTool(canvas);
        break;
    }
  };

  const setupRectangleDrawing = (canvas: fabric.Canvas) => {
    let rect: fabric.Rect | null = null;
    let isDrawing = false;
    let startX = 0;
    let startY = 0;

    canvas.on('mouse:down', (o) => {
      isDrawing = true;
      const pointer = canvas.getPointer(o.e);
      startX = pointer.x;
      startY = pointer.y;

      rect = new fabric.Rect({
        left: startX,
        top: startY,
        width: 0,
        height: 0,
        fill: 'transparent',
        stroke: '#333333',
        strokeWidth: 2,
      });

      canvas.add(rect);
    });

    canvas.on('mouse:move', (o) => {
      if (!isDrawing || !rect) return;

      const pointer = canvas.getPointer(o.e);
      const width = pointer.x - startX;
      const height = pointer.y - startY;

      rect.set({
        width: Math.abs(width),
        height: Math.abs(height),
        left: width > 0 ? startX : pointer.x,
        top: height > 0 ? startY : pointer.y,
      });

      canvas.renderAll();
    });

    canvas.on('mouse:up', () => {
      isDrawing = false;
      if (rect && (rect.width === 0 || rect.height === 0)) {
        canvas.remove(rect);
      }
      rect = null;
    });
  };

  const setupTextTool = (canvas: fabric.Canvas) => {
    canvas.on('mouse:down', (o) => {
      const pointer = canvas.getPointer(o.e);
      
      const text = new fabric.IText('双击编辑文本', {
        left: pointer.x,
        top: pointer.y,
        fontSize: 16,
        fill: '#333333',
      });
      
      canvas.add(text);
      canvas.setActiveObject(text);
      text.enterEditing();
      text.selectAll();
    });
  };

  // 暴露方法给父组件
  useImperativeHandle(ref, () => ({
    getCanvas: () => fabricCanvasRef.current,
    loadFromJSON: (json: any) => {
      if (fabricCanvasRef.current) {
        fabricCanvasRef.current.loadFromJSON(json, () => {
          fabricCanvasRef.current?.renderAll();
        });
      }
    },
    toJSON: () => {
      return fabricCanvasRef.current?.toJSON();
    },
  }));

  return (
    <div className="wpds-fabric-canvas">
      <canvas ref={canvasRef} />
    </div>
  );
});

第四章：WordPress集成与Gutenberg块开发

4.1 创建Gutenberg块

为了让用户能在文章/页面中插入设计，我们需要创建Gutenberg块：

// src/block/index.js
import { registerBlockType } from '@wordpress/blocks';
import { Button, Modal } from '@wordpress/components';
import { useState } from '@wordpress/element';
import { DesignCanvas } from '../editor/components/DesignCanvas';

/design-block', {

title: '设计图',
icon: 'layout',
category: 'embed',
attributes: {
    designId: {
        type: 'number',
        default: 0
    },
    designTitle: {
        type: 'string',
        default: ''
    },
    thumbnail: {
        type: 'string',
        default: ''
    },
    width: {
        type: 'string',
        default: '100%'
    },
    align: {
        type: 'string',
        default: 'center'
    }
},

edit: function({ attributes, setAttributes }) {
    const [isModalOpen, setIsModalOpen] = useState(false);
    const [selectedDesign, setSelectedDesign] = useState(null);
    
    // 打开设计库
    const openDesignLibrary = async () => {
        try {
            const response = await fetch('/wp-json/wpds/v1/designs');
            const designs = await response.json();
            // 这里应该显示设计库模态框
            setIsModalOpen(true);
        } catch (error) {
            console.error('Failed to load designs:', error);
        }
    };
    
    // 创建新设计
    const createNewDesign = () => {
        setIsModalOpen(true);
        setSelectedDesign(null);
    };
    
    // 选择设计
    const handleSelectDesign = (design) => {
        setAttributes({
            designId: design.id,
            designTitle: design.title,
            thumbnail: design.thumbnail
        });
        setIsModalOpen(false);
    };
    
    // 保存设计
    const handleSaveDesign = (design) => {
        setAttributes({
            designId: design.id,
            designTitle: design.title,
            thumbnail: design.thumbnail
        });
    };
    
    return (
        <div className={`wpds-design-block align${attributes.align}`}>
            {attributes.designId ? (
                <div className="wpds-design-preview">
                    <img 
                        src={attributes.thumbnail || `${wpds_plugin_url}/assets/images/default-thumbnail.png`} 
                        alt={attributes.designTitle}
                        style={{ width: attributes.width }}
                    />
                    <div className="wpds-design-actions">
                        <Button isSecondary onClick={() => setIsModalOpen(true)}>
                            编辑设计
                        </Button>
                        <Button isDestructive onClick={() => {
                            setAttributes({
                                designId: 0,
                                designTitle: '',
                                thumbnail: ''
                            });
                        }}>
                            移除
                        </Button>
                    </div>
                </div>
            ) : (
                <div className="wpds-design-placeholder">
                    <p>插入设计图</p>
                    <div className="wpds-design-buttons">
                        <Button isPrimary onClick={createNewDesign}>
                            创建新设计
                        </Button>
                        <Button isSecondary onClick={openDesignLibrary}>
                            从库中选择
                        </Button>
                    </div>
                </div>
            )}
            
            {isModalOpen && (
                <Modal
                    title={selectedDesign ? "编辑设计" : "创建新设计"}
                    onRequestClose={() => setIsModalOpen(false)}
                    className="wpds-design-modal"
                >
                    <DesignCanvas 
                        designId={selectedDesign?.id}
                        onSave={handleSaveDesign}
                    />
                </Modal>
            )}
        </div>
    );
},

save: function({ attributes }) {
    if (!attributes.designId) {
        return null;
    }
    
    return (
        <div className={`wpds-design-embed align${attributes.align}`}>
            <div 
                className="wpds-design-container"
                data-design-id={attributes.designId}
                style={{ maxWidth: attributes.width }}
            >
                {/* 这里将渲染实际的设计图 */}
                <div className="wpds-design-loading">
                    加载设计中...
                </div>
            </div>
        </div>
    );
}

});


### 4.2 前端渲染设计图

当文章显示时，我们需要在前端渲染设计图：

// src/frontend/render.js
document.addEventListener('DOMContentLoaded', function() {

// 查找所有设计图容器
const designContainers = document.querySelectorAll('.wpds-design-container[data-design-id]');

designContainers.forEach(container => {
    const designId = container.getAttribute('data-design-id');
    loadAndRenderDesign(designId, container);
});

});

async function loadAndRenderDesign(designId, container) {

try {
    // 获取设计数据
    const response = await fetch(`/wp-json/wpds/v1/designs/${designId}`);
    const design = await response.json();
    
    // 创建Canvas元素
    const canvas = document.createElement('canvas');
    canvas.width = 800;
    canvas.height = 600;
    canvas.className = 'wpds-rendered-canvas';
    container.innerHTML = '';
    container.appendChild(canvas);
    
    // 使用Fabric.js渲染设计
    const fabricCanvas = new fabric.Canvas(canvas);
    fabricCanvas.loadFromJSON(JSON.parse(design.content), () => {
        fabricCanvas.renderAll();
        
        // 添加交互功能
        if (design.type === 'prototype') {
            addPrototypeInteractions(fabricCanvas, design);
        }
    });
    
} catch (error) {
    console.error('Failed to render design:', error);
    container.innerHTML = '<div class="wpds-design-error">无法加载设计图</div>';
}

}

function addPrototypeInteractions(canvas, design) {

// 为UI原型添加点击交互
canvas.on('mouse:down', function(e) {
    if (e.target && e.target.linkTo) {
        // 处理原型链接
        if (e.target.linkTo.startsWith('#')) {
            // 内部页面跳转
            const targetScreen = design.screens.find(s => s.id === e.target.linkTo.substring(1));
            if (targetScreen) {
                // 切换到目标屏幕
                canvas.loadFromJSON(targetScreen.content, () => {
                    canvas.renderAll();
                });
            }
        } else {
            // 外部链接
            window.open(e.target.linkTo, '_blank');
        }
    }
});

// 添加悬停效果
canvas.on('mouse:over', function(e) {
    if (e.target && e.target.linkTo) {
        canvas.defaultCursor = 'pointer';
        e.target.set('stroke', '#007cba');
        canvas.renderAll();
    }
});

canvas.on('mouse:out', function(e) {
    if (e.target && e.target.linkTo) {
        canvas.defaultCursor = 'default';
        e.target.set('stroke', e.target.originalStroke || '#333333');
        canvas.renderAll();
    }
});

}


## 第五章：UI组件库与模板系统

### 5.1 构建UI组件库

// src/editor/components/UIComponentsLibrary.tsx
import React from 'react';

const UI_COMPONENTS = {

basic: [
    { id: 'button', name: '按钮', icon: 'button', component: ButtonComponent },
    { id: 'input', name: '输入框', icon: 'input', component: InputComponent },
    { id: 'textarea', name: '文本域', icon: 'textarea', component: TextareaComponent },
    { id: 'dropdown', name: '下拉菜单', icon: 'dropdown', component: DropdownComponent },
],
layout: [
    { id: 'header', name: '页眉', icon: 'header', component: HeaderComponent },
    { id: 'footer', name: '页脚', icon: 'footer', component: FooterComponent },
    { id: 'sidebar', name: '侧边栏', icon: 'sidebar', component: SidebarComponent },
    { id: 'navbar', name: '导航栏', icon: 'navbar', component: NavbarComponent },
],
mobile: [
    { id: 'mobile-header', name: '移动端页眉', icon: 'smartphone', component: MobileHeaderComponent },
    { id: 'tab-bar', name: '标签栏', icon: 'tab-bar', component: TabBarComponent },
    { id: 'list-item', name: '列表项', icon: 'list', component: ListItemComponent },
]

};

export const UIComponentsLibrary: React.FC<{ onComponentAdd: (component: any) => void }> = ({ onComponentAdd }) => {

const [activeCategory, setActiveCategory] = React.useState('basic');

const handleDragStart = (e: React.DragEvent, component: any) => {
    e.dataTransfer.setData('application/wpds-component', JSON.stringify(component));
};

return (
    <div className="wpds-ui-library">
        <div className="wpds-ui-categories">
            {Object.keys(UI_COMPONENTS).map(category => (
                <button
                    key={category}
                    className={`wpds-category-btn ${activeCategory === category ? 'active' : ''}`}
                    onClick={() => setActiveCategory(category)}
                >
                    {category === 'basic' ? '基础' : 
                     category === 'layout' ? '布局' : '移动端'}
                </button>
            ))}
        </div>
        
        <div className="wpds-components-grid">
            {UI_COMPONENTS[activeCategory].map(component => (
                <div 
                    key={component.id}
                    className="wpds-component-item"
                    draggable
                    onDragStart={(e) => handleDragStart(e, component)}
                    onClick={() => onComponentAdd(component)}
                >
                    <div className="wpds-component-icon">
                        {/* 这里放置图标 */}
                    </div>
                    <span className="wpds-component-name">{component.name}</span>
                </div>
            ))}
        </div>
    </div>
);

};

// 按钮组件定义
const ButtonComponent = {

type: 'button',
config: {
    text: '按钮',
    width: 100,
    height: 40,
    backgroundColor: '#007cba',
    color: '#ffffff',
    borderRadius: 4,
    fontSize: 14,
},
create: function(config = {}) {
    return new fabric.Rect({
        width: config.width || 100,
        height: config.height || 40,
        fill: config.backgroundColor || '#007cba',
        rx: config.borderRadius || 4,
        ry: config.borderRadius || 4,
        strokeWidth: 0,
        data: {
            type: 'button',
            config: config
        }
    });
}

};


### 5.2 模板系统实现

// includes/class-templates.php
class WPDS_Templates {

private static $instance = null;
private $templates = [];

public static function get_instance() {
    if (null === self::$instance) {
        self::$instance = new self();
    }
    return self::$instance;
}

private function __construct() {
    $this->load_default_templates();
    add_action('init', [$this, 'register_template_post_type']);
}

public function register_template_post_type() {
    register_post_type('wpds_template', [
        'labels' => [
            'name' => __('设计模板', 'wpds'),
            'singular_name' => __('模板', 'wpds'),
        ],
        'public' => false,
        'show_ui' => true,
        'show_in_menu' => 'wpds-design-studio',
        'supports' => ['title', 'thumbnail'],
        'capability_type' => 'post',
    ]);
}

private function load_default_templates() {
    $this->templates = [
        'flowchart-basic' => [
            'name' => '基础流程图',
            'type' => 'flowchart',
            'thumbnail' => WPDS_PLUGIN_URL . 'assets/templates/flowchart-basic.png',
            'content' => json_encode([
                'objects' => [
                    // 默认的流程图元素
                ],
                'background' => '#ffffff'
            ])
        ],
        'website-wireframe' => [
            'name' => '网站线框图',
            'type' => 'wireframe',
            'thumbnail' => WPDS_PLUGIN_URL . 'assets/templates/website-wireframe.png',
            'content' => json_encode([
                'objects' => [
                    // 网站线框图元素
                ],
                'background' => '#f5f5f5'
            ])
        ],
        'mobile-app' => [
            'name' => '移动应用原型',
            'type' => 'prototype',
            'thumbnail' => WPDS_PLUGIN_URL . 'assets/templates/mobile-app.png',
            'content' => json_encode([
                'screens' => [
                    // 多个屏幕定义
                ]
            ])
        ]
    ];
}

public function get_templates($type = '') {
    if ($type) {
        return array_filter($this->templates, function($template) use ($type) {
            return $template['type'] === $type;
        });
    }
    return $this->templates;
}

public function apply_template($template_id, $canvas) {
    if (!isset($this->templates[$template_id])) {
        return false;
    }
    
    $template = $this->templates[$template_id];
    $canvas.loadFromJSON(json_decode($template['content'], true));
    return true;
}

}


## 第六章：高级功能实现

### 6.1 实时协作功能

// src/collaboration/CollaborationManager.js
import Pusher from 'pusher-js';

export class CollaborationManager {

constructor(designId, userId) {
    this.designId = designId;
    this.userId = userId;
    this.canvas = null;
    this.pusher = null;
    this.channel = null;
    this.cursors = new Map();
    
    this.initializePusher();
}

initializePusher() {
    // 初始化Pusher连接
    this.pusher = new Pusher(wpds_pusher_key, {
        cluster: wpds_pusher_cluster,
        authEndpoint: '/wp-json/wpds/v1/pusher/auth',
        auth: {
            params: {
                user_id: this.userId,
                design_id: this.designId
            }
        }
    });
    
    this.channel = this.pusher.subscribe(`private-design-${this.designId}`);
    
    // 监听其他用户的操作
    this.channel.bind('client-object-added', this.handleObjectAdded.bind(this));
    this.channel.bind('client-object-modified', this.handleObjectModified.bind(this));
    this.channel.bind('client-object-removed', this.handleObjectRemoved.bind(this));
    this.channel.bind('client-cursor-moved', this.handleCursorMoved.bind(this));
}

setCanvas(canvas) {
    this.canvas = canvas;
    this.setupCanvasEvents();
}

setupCanvasEvents() {
    if (!this.canvas) return;
    
    // 监听画布变化并广播
    this.canvas.on('object:added', (e) => {
        if (e.target.__local) return; // 避免循环
        this.broadcast('object-added', e.target.toJSON());
    });
    
    this.canvas.on('object:modified', (e) => {
        if (e.target.__local) return;
        this.broadcast('object-modified', {
            id: e.target.id,
            properties: e.target.toJSON()
        });
    });
    
    this.canvas.on('object:removed', (e) => {
        if (e.target.__local) return;
        this.broadcast('object-removed', e.target.id);
    });
    
    // 监听鼠标移动
    this.canvas.on('mouse:move', (e) => {
        const pointer = this.canvas.getPointer(e.e);
        this.broadcast('cursor-moved', {
            x: pointer.x,
            y: pointer.y,
            userId: this.userId
        });
    });
}

broadcast(event, data) {
    if (!this.channel) return;
    
    data.timestamp = Date.now();
    data.userId = this.userId;
    
    this.channel.trigger(`client-${event}`, data);
}

handleObjectAdded(data) {
    if (data.userId === this.userId) return;
    
    fabric.util.enlivenObjects([data], (objects) => {
        objects.forEach(obj => {
            obj.__remote = true;
            this.canvas.add(obj);
        });
        this.canvas.renderAll();
    });
}

handleObjectModified(data) {
    if (data.userId === this.userId) return;
    
    const obj = this.canvas.getObjects().find(o => o.id === data.id);
    if (obj) {
        obj.__remote = true;
        obj.set(data.properties);
        this.canvas.renderAll();
    }
}

handleCursorMoved(data) {
    if (data.userId === this.userId) return;
    
    this.updateUserCursor(data.userId, data.x, data.y);
}

updateUserCursor(userId, x, y) {
    let cursor = this.cursors.get(userId);
    
    if (!cursor) {
        // 创建新的光标
        cursor = new fabric.Circle({
            radius: 5,
            fill: this.getUserColor(userId),
            left: x,
            top: y,
            selectable: false,
            hasControls: false,
            hasBorders: false
        });
        
        // 添加用户标签
        const text = new fabric.Text(`用户${userId}`, {
            left: x + 10,
            top: y - 10,
            fontSize: 12,
            fill: this.getUserColor(userId)
        });
        
        cursor.label = text;
        this.canvas.add(cursor);
        this.canvas.add(text);
        this.cursors.set(userId, { cursor, label: text });
    } else {
        // 更新现有光标位置
        cursor.cursor.set({ left: x, top: y });
        cursor.label.set({ left: x + 10, top: y - 10 });
    }
    
    this.canvas.renderAll();
}

getUserColor(userId) {
    const colors = ['#FF6B6B', '#4ECDC4', '#FFD166', '#06D6A0', '#118AB2'];
    return colors[userId % colors.length];
}

destroy() {
    if (this.pusher) {
        this.pusher.disconnect();
    }
}

}

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