119 lines
4.0 KiB
C#
119 lines
4.0 KiB
C#
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/*
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* ExportInkMenuItem.cs
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* "导出墨迹" 菜单项
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* 所属项目：Better-Seewo
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* 作者：雾启工作室
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*
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* 说明：
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* 实现白板编辑菜单中的"导出墨迹"功能。
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* 点击后将当前白板的墨迹数据导出为 .ink.json 格式的 JSON 文件。
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* 默认文件名为"课件墨迹.ink.json"。
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*/
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using System;
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using System.IO;
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using System.Threading.Tasks;
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using System.Windows;
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using dotnetCampus.EasiPlugin;
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using Newtonsoft.Json;
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namespace Better_Seewo.Better_EN5.UI
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{
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/// <summary>
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/// 导出墨迹菜单项
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/// 实现 IMenuPluginItem 接口，在白板编辑菜单中显示"导出墨迹"按钮
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/// 点击后打开文件保存对话框，将当前白板墨迹序列化为 JSON 文件
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/// </summary>
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public class ExportInkMenuItem : IMenuPluginItem
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{
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/// <summary>
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/// 菜单项唯一标识符
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/// </summary>
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public Guid Id { get; } = new Guid("A1B2C3D4-E5F6-7890-ABCD-EF1234567890");
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/// <summary>
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/// 菜单项显示标题
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/// 根据当前语言环境显示"导出墨迹"或"Export Ink"
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/// </summary>
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public string Title { get; }
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/// <summary>
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/// 菜单项排序提示值
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/// 值越大越靠前，998 表示在菜单中靠前的位置
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/// </summary>
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public int SortHint { get; } = 998;
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/// <summary>
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/// 语言资源源，用于获取多语言文本
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/// </summary>
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private readonly DictionaryLanguageSource _languageSource;
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="languageSource">中英文双语资源字典</param>
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public ExportInkMenuItem(DictionaryLanguageSource languageSource)
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{
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_languageSource = languageSource;
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// 从语言资源中获取菜单项标题，默认中文
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Title = _languageSource.GetString("ExportInk.Title") ?? "导出墨迹";
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}
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/// <summary>
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/// 获取菜单项图标
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/// 返回菜单项在工具栏中显示的图标资源路径
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/// </summary>
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/// <returns>图标资源路径字符串</returns>
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public string GetMenuIcon()
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{
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// 返回导出图标路径
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return "pack://application:,,,/Better-EN5;component/Resources/export_icon.png";
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}
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/// <summary>
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/// 菜单项点击事件处理
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/// 打开文件保存对话框，将当前白板墨迹导出为 .ink.json 文件
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/// </summary>
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public async Task OnClickAsync()
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{
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await Task.Run(() =>
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{
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// 从白板获取当前墨迹数据
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var inkData = InkDataHelper.ExportInkData();
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if (inkData == null)
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{
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MessageBox.Show("当前白板没有可导出的墨迹数据。", "提示",
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MessageBoxButton.OK, MessageBoxImage.Information);
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return;
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}
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// 创建文件保存对话框
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var saveFileDialog = new Microsoft.Win32.SaveFileDialog
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{
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// 默认文件名
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FileName = "课件墨迹.ink.json",
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// 文件过滤器
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Filter = "墨迹 JSON 文件 (*.ink.json)|*.ink.json|所有文件 (*.*)|*.*",
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// 默认扩展名
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DefaultExt = ".ink.json",
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// 对话框标题
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Title = "导出墨迹",
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};
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// 显示保存对话框
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if (saveFileDialog.ShowDialog() == true)
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{
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// 使用 Newtonsoft.Json 将墨迹数据序列化为格式化的 JSON 字符串
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string json = JsonConvert.SerializeObject(inkData, Formatting.Indented);
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// 写入文件
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File.WriteAllText(saveFileDialog.FileName, json);
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}
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});
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}
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}
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}
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