using Ink_Canvas.Helpers; using System; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media.Imaging; using System.Windows.Media; namespace Ink_Canvas { public partial class MainWindow : Window { private bool isClipboardMonitoringEnabled = false; private BitmapSource lastClipboardImage = null; // 初始化剪贴板监控 private void InitializeClipboardMonitoring() { try { // 监听剪贴板变化 ClipboardNotification.ClipboardUpdate += OnClipboardUpdate; isClipboardMonitoringEnabled = true; } catch (Exception ex) { LogHelper.WriteLogToFile($"初始化剪贴板监控失败: {ex.Message}", LogHelper.LogType.Error); } } // 剪贴板内容变化事件处理 private void OnClipboardUpdate() { try { if (Clipboard.ContainsImage()) { var clipboardImage = Clipboard.GetImage(); if (clipboardImage != null && clipboardImage != lastClipboardImage) { lastClipboardImage = clipboardImage; // 在白板模式下显示粘贴提示 if (currentMode == 1) // 白板模式 { ShowPasteNotification(); } } } } catch (Exception ex) { LogHelper.WriteLogToFile($"处理剪贴板更新失败: {ex.Message}", LogHelper.LogType.Error); } } // 显示粘贴提示 private void ShowPasteNotification() { try { Dispatcher.Invoke(() => { ShowNotification("检测到剪贴板中有图片，右键点击白板可粘贴"); }); } catch (Exception ex) { LogHelper.WriteLogToFile($"显示粘贴提示失败: {ex.Message}", LogHelper.LogType.Error); } } // 处理右键菜单显示 private void ShowPasteContextMenu(Point position) { try { if (!Clipboard.ContainsImage()) return; // 创建右键菜单 var contextMenu = new ContextMenu(); var pasteMenuItem = new MenuItem { Header = "粘贴图片" }; pasteMenuItem.Click += async (s, e) => await PasteImageFromClipboard(position); contextMenu.Items.Add(pasteMenuItem); // 显示菜单 contextMenu.IsOpen = true; contextMenu.PlacementTarget = inkCanvas; contextMenu.Placement = System.Windows.Controls.Primitives.PlacementMode.MousePoint; } catch (Exception ex) { LogHelper.WriteLogToFile($"显示粘贴菜单失败: {ex.Message}", LogHelper.LogType.Error); } } // 从剪贴板粘贴图片 private async Task PasteImageFromClipboard(Point? position = null) { try { if (!Clipboard.ContainsImage()) { ShowNotification("剪贴板中没有图片"); return; } var clipboardImage = Clipboard.GetImage(); if (clipboardImage == null) { ShowNotification("无法获取剪贴板图片"); return; } // 创建Image控件 var image = new Image { Source = clipboardImage, Width = clipboardImage.PixelWidth, Height = clipboardImage.PixelHeight, Stretch = System.Windows.Media.Stretch.Fill }; // 生成唯一名称 string timestamp = "img_clipboard_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff"); image.Name = timestamp; // 初始化TransformGroup if (image is FrameworkElement element) { var transformGroup = new TransformGroup(); transformGroup.Children.Add(new ScaleTransform(1, 1)); transformGroup.Children.Add(new TranslateTransform(0, 0)); transformGroup.Children.Add(new RotateTransform(0)); element.RenderTransform = transformGroup; } // 设置位置 if (position.HasValue) { // 在指定位置居中显示 InkCanvas.SetLeft(image, position.Value.X - image.Width / 2); InkCanvas.SetTop(image, position.Value.Y - image.Height / 2); } else { // 使用与文件选择相同的居中和缩放逻辑 CenterAndScaleElement(image); } // 设置图片属性，避免被InkCanvas选择系统处理 image.IsHitTestVisible = true; image.Focusable = false; // 初始化InkCanvas选择设置 if (inkCanvas != null) { // 清除当前选择，避免显示控制点 inkCanvas.Select(new StrokeCollection()); // 设置编辑模式为Ink模式，这样可以保持图片的交互功能 // 同时通过图片的IsHitTestVisible和Focusable属性来避免InkCanvas选择系统的干扰 inkCanvas.EditingMode = InkCanvasEditingMode.Ink; } // 添加到画布 inkCanvas.Children.Add(image); // 绑定事件处理器 if (image is FrameworkElement elementForEvents) { // 鼠标事件 elementForEvents.MouseLeftButtonDown += Element_MouseLeftButtonDown; elementForEvents.MouseLeftButtonUp += Element_MouseLeftButtonUp; elementForEvents.MouseMove += Element_MouseMove; elementForEvents.MouseWheel += Element_MouseWheel; // 触摸事件 elementForEvents.IsManipulationEnabled = true; elementForEvents.ManipulationDelta += Element_ManipulationDelta; elementForEvents.ManipulationCompleted += Element_ManipulationCompleted; // 设置光标 elementForEvents.Cursor = Cursors.Hand; } // 提交到历史记录 timeMachine.CommitElementInsertHistory(image); ShowNotification("图片已从剪贴板粘贴"); } catch (Exception ex) { ShowNotification($"粘贴图片失败: {ex.Message}"); LogHelper.WriteLogToFile($"粘贴图片失败: {ex.Message}", LogHelper.LogType.Error); } } // 处理白板右键事件 private void InkCanvas_MouseRightButtonUp(object sender, MouseButtonEventArgs e) { try { // 只在白板模式下处理 if (currentMode != 1) return; // 检查是否有图片在剪贴板中 if (Clipboard.ContainsImage()) { var position = e.GetPosition(inkCanvas); ShowPasteContextMenu(position); } } catch (Exception ex) { LogHelper.WriteLogToFile($"处理右键事件失败: {ex.Message}", LogHelper.LogType.Error); } } // 处理全局粘贴快捷键 internal async void HandleGlobalPaste(object sender, ExecutedRoutedEventArgs e) { try { // 只在白板模式下处理 if (currentMode != 1) return; if (Clipboard.ContainsImage()) { await PasteImageFromClipboard(); } } catch (Exception ex) { LogHelper.WriteLogToFile($"处理全局粘贴失败: {ex.Message}", LogHelper.LogType.Error); } } // 清理剪贴板监控 private void CleanupClipboardMonitoring() { try { if (isClipboardMonitoringEnabled) { ClipboardNotification.ClipboardUpdate -= OnClipboardUpdate; isClipboardMonitoringEnabled = false; } } catch (Exception ex) { LogHelper.WriteLogToFile($"清理剪贴板监控失败: {ex.Message}", LogHelper.LogType.Error); } } } // 剪贴板通知类 public static class ClipboardNotification { public static event Action ClipboardUpdate; private static System.Windows.Forms.Timer clipboardTimer; private static string lastClipboardText = ""; private static bool lastHadImage = false; static ClipboardNotification() { clipboardTimer = new System.Windows.Forms.Timer(); clipboardTimer.Interval = 500; // 每500ms检查一次 clipboardTimer.Tick += CheckClipboard; clipboardTimer.Start(); } private static void CheckClipboard(object sender, EventArgs e) { try { bool currentHasImage = Clipboard.ContainsImage(); string currentText = Clipboard.ContainsText() ? Clipboard.GetText() : ""; if (currentHasImage != lastHadImage || currentText != lastClipboardText) { lastHadImage = currentHasImage; lastClipboardText = currentText; ClipboardUpdate?.Invoke(); } } catch { // 忽略剪贴板访问错误 } } public static void Stop() { clipboardTimer?.Stop(); clipboardTimer?.Dispose(); } } }