2619 lines
102 KiB
C#
2619 lines
102 KiB
C#
using Ink_Canvas.Controls;
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using Ink_Canvas.Helpers;
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using Microsoft.Win32;
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Ink;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Shapes;
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using System.Windows.Threading;
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using Path = System.IO.Path;
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namespace Ink_Canvas
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{
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public partial class MainWindow : Window
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{
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/// <summary>
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/// 当前选中的可操作元素
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/// </summary>
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private FrameworkElement currentSelectedElement;
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/// <summary>
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/// 是否正在拖动
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/// </summary>
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private bool isDragging;
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/// <summary>
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/// 拖动起始点
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/// </summary>
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private Point dragStartPoint;
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/// <summary>页码侧栏当前订阅 <see cref="PdfEmbeddedView.PageNavigationStateChanged"/> 的 PDF 视图。</summary>
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private PdfEmbeddedView _pdfPageSidebarEventSource;
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private bool _pdfSidebarPositionRefreshPending;
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/// <summary>为 true 时，下一次成功算出 PDF 边界后的侧栏定位使用宿主 Visual 变换（仅用于刚插入/恢复 PDF 的首帧对齐）。</summary>
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private bool _pdfSidebarNextPositionUseHostTransform;
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#region Image
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/// <summary>
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/// 处理图片插入按钮点击事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 打开文件选择对话框，选择图片文件
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/// - 创建并压缩图片
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/// - 设置图片属性，避免被InkCanvas选择系统处理
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/// - 初始化InkCanvas选择设置
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/// - 添加图片到画布
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/// - 等待图片加载完成后进行后续处理
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/// - 初始化TransformGroup
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/// - 居中缩放图片
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/// - 绑定事件处理器
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/// - 提交到时间机器历史记录
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/// - 插入图片后切换到选择模式并刷新浮动栏高光显示
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/// </remarks>
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private async void BtnImageInsert_Click(object sender, RoutedEventArgs e)
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{
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OpenFileDialog openFileDialog = new OpenFileDialog();
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openFileDialog.Filter = "图片与 PDF|*.jpg;*.jpeg;*.png;*.bmp;*.gif;*.pdf|图片文件|*.jpg;*.jpeg;*.png;*.bmp;*.gif|PDF|*.pdf";
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if (openFileDialog.ShowDialog() == true)
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{
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string filePath = openFileDialog.FileName;
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FrameworkElement element = await CreateAndCompressImageAsync(filePath);
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if (element != null)
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{
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string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
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element.Name = timestamp;
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// 设置图片属性，避免被InkCanvas选择系统处理
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element.IsHitTestVisible = true;
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element.Focusable = false;
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// 初始化InkCanvas选择设置
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InitializeInkCanvasSelectionSettings();
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// 先添加到画布
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inkCanvas.Children.Add(element);
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// 等待图片加载完成后再进行后续处理
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element.Loaded += (s, args) =>
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{
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Dispatcher.BeginInvoke(new Action(() =>
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{
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// 初始化TransformGroup
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InitializeElementTransform(element);
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// 居中缩放
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CenterAndScaleElement(element);
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// 最后绑定事件处理器
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BindElementEvents(element);
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if (element is PdfEmbeddedView)
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_pdfSidebarNextPositionUseHostTransform = true;
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SyncPdfPageSidebarWithCanvas();
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LogHelper.WriteLogToFile($"图片插入完成: {element.Name}");
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}), DispatcherPriority.Loaded);
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};
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timeMachine.CommitElementInsertHistory(element);
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// 插入图片后切换到选择模式并刷新浮动栏高光显示
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SetCurrentToolMode(InkCanvasEditingMode.Select);
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UpdateCurrentToolMode("select");
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HideSubPanels("select");
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}
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}
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}
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/// <summary>
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/// 初始化元素的TransformGroup
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/// </summary>
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/// <param name="element">要初始化的元素</param>
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/// <remarks>
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/// - 创建TransformGroup
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/// - 添加ScaleTransform、TranslateTransform和RotateTransform
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/// - 设置元素的RenderTransform
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/// </remarks>
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private void InitializeElementTransform(FrameworkElement element)
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{
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var transformGroup = new TransformGroup();
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transformGroup.Children.Add(new ScaleTransform(1, 1));
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transformGroup.Children.Add(new TranslateTransform(0, 0));
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transformGroup.Children.Add(new RotateTransform(0));
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element.RenderTransform = transformGroup;
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}
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/// <summary>
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/// 绑定元素事件处理器
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/// </summary>
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/// <param name="element">要绑定事件的元素</param>
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/// <remarks>
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/// - 绑定鼠标事件（MouseLeftButtonDown、MouseLeftButtonUp、MouseMove、MouseWheel）
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/// - 启用触摸操作
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/// - 绑定触摸事件（ManipulationDelta、ManipulationCompleted）
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/// - 设置光标为手形
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/// - 禁用InkCanvas对图片的选择处理
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/// </remarks>
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private void BindElementEvents(FrameworkElement element)
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{
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// 鼠标事件
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element.MouseLeftButtonDown += Element_MouseLeftButtonDown;
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element.MouseLeftButtonUp += Element_MouseLeftButtonUp;
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element.MouseMove += Element_MouseMove;
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element.MouseWheel += Element_MouseWheel;
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// 触摸事件
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element.IsManipulationEnabled = true;
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element.ManipulationDelta += Element_ManipulationDelta;
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element.ManipulationCompleted += Element_ManipulationCompleted;
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// 设置光标
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element.Cursor = Cursors.Hand;
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// 禁用InkCanvas对图片的选择处理
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element.IsHitTestVisible = true;
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element.Focusable = false;
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}
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/// <summary>
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/// 处理元素鼠标左键按下事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 检查编辑模式是否为选择模式
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/// - 取消之前选中的元素
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/// - 选中当前元素
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/// - 开始拖动
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/// - 捕获鼠标
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/// - 设置光标为全尺寸光标
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/// </remarks>
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private void Element_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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if (inkCanvas.EditingMode != InkCanvasEditingMode.Select)
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{
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e.Handled = false;
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return;
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}
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// 取消之前选中的元素
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if (currentSelectedElement != null && currentSelectedElement != element)
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{
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// 保存当前编辑模式
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var previousEditingMode = inkCanvas.EditingMode;
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UnselectElement(currentSelectedElement);
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// 恢复编辑模式
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inkCanvas.EditingMode = previousEditingMode;
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}
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// 选中当前元素
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SelectElement(element);
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// 开始拖动
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isDragging = true;
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dragStartPoint = e.GetPosition(inkCanvas);
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element.CaptureMouse();
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element.Cursor = Cursors.SizeAll;
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素鼠标左键释放事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 停止拖动
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/// - 释放鼠标捕获
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/// - 恢复光标为手形
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/// </remarks>
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private void Element_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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isDragging = false;
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element.ReleaseMouseCapture();
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element.Cursor = Cursors.Hand;
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素触摸释放事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 停止拖动
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/// - 释放触摸捕获
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/// - 恢复光标为手形
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/// </remarks>
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private void Element_TouchUp(object sender, TouchEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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isDragging = false;
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element.ReleaseTouchCapture(e.TouchDevice);
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element.Cursor = Cursors.Hand;
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素鼠标移动事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 检查是否正在拖动且鼠标已捕获
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/// - 获取当前鼠标位置
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/// - 应用鼠标拖动变换
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/// - 如果是图片元素，更新工具栏位置
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/// - 如果是图片元素，更新选择点位置
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/// - 更新拖动起始点
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/// </remarks>
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private void Element_MouseMove(object sender, MouseEventArgs e)
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{
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if (sender is FrameworkElement element && isDragging && element.IsMouseCaptured)
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{
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var currentPoint = e.GetPosition(inkCanvas);
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// 使用鼠标拖动的完整实现机制
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ApplyMouseDragTransform(element, currentPoint, dragStartPoint);
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// 如果是图片元素，更新工具栏位置
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if (IsBitmapLikeCanvasElement(element) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
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{
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UpdateImageSelectionToolbarPosition(element);
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}
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// 如果是图片元素，更新选择点位置
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if (IsBitmapLikeCanvasElement(element) && ImageResizeHandlesCanvas?.Visibility == Visibility.Visible)
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{
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UpdateImageResizeHandlesPosition(GetElementActualBounds(element));
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}
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dragStartPoint = currentPoint;
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素鼠标滚轮事件 - 缩放
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 应用滚轮缩放变换
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/// - 如果是图片元素，更新工具栏位置
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/// - 如果是图片元素，更新选择点位置
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/// </remarks>
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private void Element_MouseWheel(object sender, MouseWheelEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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// 使用滚轮缩放的核心机制
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ApplyWheelScaleTransform(element, e);
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// 如果是图片元素，更新工具栏位置
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if (IsBitmapLikeCanvasElement(element) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
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{
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UpdateImageSelectionToolbarPosition(element);
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}
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// 如果是图片元素，更新选择点位置
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if (IsBitmapLikeCanvasElement(element) && ImageResizeHandlesCanvas?.Visibility == Visibility.Visible)
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{
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UpdateImageResizeHandlesPosition(GetElementActualBounds(element));
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}
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素触摸按下事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 检查编辑模式是否为选择模式
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/// - 取消之前选中的元素
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/// - 选中当前元素
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/// - 开始拖动
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/// - 捕获触摸
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/// - 设置光标为全尺寸光标
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/// </remarks>
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private void Element_TouchDown(object sender, TouchEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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if (inkCanvas.EditingMode != InkCanvasEditingMode.Select)
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{
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e.Handled = false;
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return;
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}
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// 取消之前选中的元素
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if (currentSelectedElement != null && currentSelectedElement != element)
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{
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// 保存当前编辑模式
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var previousEditingMode = inkCanvas.EditingMode;
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UnselectElement(currentSelectedElement);
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// 恢复编辑模式
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inkCanvas.EditingMode = previousEditingMode;
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}
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// 选中当前元素
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SelectElement(element);
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// 开始拖动
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isDragging = true;
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dragStartPoint = e.GetTouchPoint(inkCanvas).Position;
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element.CaptureTouch(e.TouchDevice);
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element.Cursor = Cursors.SizeAll;
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理元素触摸操作事件
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/// </summary>
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/// <param name="sender">事件发送者</param>
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/// <param name="e">事件参数</param>
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/// <remarks>
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/// - 检查是否是双指手势
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/// - 双指手势时，让画布级别的手势处理
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/// - 单指手势时，应用触摸拖动变换
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/// - 如果是图片元素，更新工具栏位置
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/// - 如果是图片元素，更新选择点位置
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/// </remarks>
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private void Element_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
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{
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if (sender is FrameworkElement element)
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{
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// 检查是否是双指手势
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if (e.Manipulators.Count() >= 2)
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{
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// 双指手势时，不处理单个元素的手势，让画布级别的手势处理
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// 这样可以实现图片与墨迹的同步移动
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e.Handled = false;
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return;
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}
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// 单指手势时，使用触摸拖动的完整实现
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ApplyTouchManipulationTransform(element, e);
|
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// 如果是图片元素，更新工具栏位置
|
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if (IsBitmapLikeCanvasElement(element) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
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{
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UpdateImageSelectionToolbarPosition(element);
|
||
}
|
||
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// 如果是图片元素，更新选择点位置
|
||
if (IsBitmapLikeCanvasElement(element) && ImageResizeHandlesCanvas?.Visibility == Visibility.Visible)
|
||
{
|
||
UpdateImageResizeHandlesPosition(GetElementActualBounds(element));
|
||
}
|
||
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理元素触摸操作完成事件
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 可以在这里添加操作完成后的处理逻辑
|
||
/// </remarks>
|
||
private void Element_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
|
||
{
|
||
// 可以在这里添加操作完成后的处理逻辑
|
||
}
|
||
|
||
/// <summary>
|
||
/// 应用平移变换到元素
|
||
/// </summary>
|
||
/// <param name="element">要变换的元素</param>
|
||
/// <param name="deltaX">X轴偏移量</param>
|
||
/// <param name="deltaY">Y轴偏移量</param>
|
||
/// <remarks>
|
||
/// - 获取元素的TransformGroup
|
||
/// - 查找TranslateTransform
|
||
/// - 应用平移变换
|
||
/// </remarks>
|
||
private void ApplyTranslateTransform(FrameworkElement element, double deltaX, double deltaY)
|
||
{
|
||
if (element.RenderTransform is TransformGroup transformGroup)
|
||
{
|
||
var translateTransform = transformGroup.Children.OfType<TranslateTransform>().FirstOrDefault();
|
||
if (translateTransform != null)
|
||
{
|
||
translateTransform.X += deltaX;
|
||
translateTransform.Y += deltaY;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 应用缩放变换到元素
|
||
/// </summary>
|
||
/// <param name="element">要变换的元素</param>
|
||
/// <param name="scaleFactor">缩放因子</param>
|
||
/// <param name="center">缩放中心</param>
|
||
/// <remarks>
|
||
/// - 获取元素的TransformGroup
|
||
/// - 查找ScaleTransform
|
||
/// - 设置缩放中心
|
||
/// - 应用缩放
|
||
/// - 限制缩放范围（0.1到5.0）
|
||
/// </remarks>
|
||
private void ApplyScaleTransform(FrameworkElement element, double scaleFactor, Point center)
|
||
{
|
||
if (element.RenderTransform is TransformGroup transformGroup)
|
||
{
|
||
var scaleTransform = transformGroup.Children.OfType<ScaleTransform>().FirstOrDefault();
|
||
if (scaleTransform != null)
|
||
{
|
||
// 设置缩放中心
|
||
scaleTransform.CenterX = center.X;
|
||
scaleTransform.CenterY = center.Y;
|
||
|
||
// 应用缩放
|
||
scaleTransform.ScaleX *= scaleFactor;
|
||
scaleTransform.ScaleY *= scaleFactor;
|
||
|
||
// 限制缩放范围
|
||
scaleTransform.ScaleX = Math.Max(0.1, Math.Min(scaleTransform.ScaleX, 5.0));
|
||
scaleTransform.ScaleY = Math.Max(0.1, Math.Min(scaleTransform.ScaleY, 5.0));
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 应用旋转变换到元素
|
||
/// </summary>
|
||
/// <param name="element">要变换的元素</param>
|
||
/// <param name="angle">旋转角度</param>
|
||
/// <remarks>
|
||
/// - 获取元素的TransformGroup
|
||
/// - 查找RotateTransform
|
||
/// - 应用旋转变换
|
||
/// </remarks>
|
||
private void ApplyRotateTransform(FrameworkElement element, double angle)
|
||
{
|
||
if (element.RenderTransform is TransformGroup transformGroup)
|
||
{
|
||
var rotateTransform = transformGroup.Children.OfType<RotateTransform>().FirstOrDefault();
|
||
if (rotateTransform != null)
|
||
{
|
||
rotateTransform.Angle += angle;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 选中元素
|
||
/// </summary>
|
||
/// <param name="element">要选中的元素</param>
|
||
/// <remarks>
|
||
/// - 设置当前选中元素
|
||
/// - 根据元素类型显示不同的选择工具栏
|
||
/// - 如果是图片元素，显示图片选择工具栏和缩放选择点
|
||
/// - 如果不是图片元素，隐藏图片选择工具栏和缩放选择点
|
||
/// - 确保选择框不显示，避免蓝色边框
|
||
/// - 禁用InkCanvas的选择功能，去除控制点
|
||
/// - 保持选择模式，这样用户可以直接点击墨迹来选择
|
||
/// </remarks>
|
||
private void SelectElement(FrameworkElement element)
|
||
{
|
||
currentSelectedElement = element;
|
||
|
||
// 根据元素类型显示不同的选择工具栏
|
||
if (IsBitmapLikeCanvasElement(element))
|
||
{
|
||
// 显示图片选择工具栏并设置位置
|
||
if (BorderImageSelectionControl != null)
|
||
{
|
||
// 计算工具栏位置（内部会同步 PDF 右侧栏位置）
|
||
UpdateImageSelectionToolbarPosition(element);
|
||
BorderImageSelectionControl.Visibility = Visibility.Visible;
|
||
}
|
||
|
||
// 显示图片缩放选择点
|
||
ShowImageResizeHandles(element);
|
||
|
||
// 墨迹选择工具栏通过GridInkCanvasSelectionCover的可见性来控制
|
||
// 不需要直接设置BorderStrokeSelectionControl.Visibility
|
||
}
|
||
else
|
||
{
|
||
// 隐藏图片选择工具栏
|
||
if (BorderImageSelectionControl != null)
|
||
{
|
||
BorderImageSelectionControl.Visibility = Visibility.Collapsed;
|
||
}
|
||
|
||
// 隐藏图片缩放选择点
|
||
HideImageResizeHandles();
|
||
|
||
// 墨迹选择工具栏通过GridInkCanvasSelectionCover的可见性来控制
|
||
// 不需要直接设置BorderStrokeSelectionControl.Visibility
|
||
}
|
||
|
||
// 确保选择框不显示，避免蓝色边框
|
||
if (GridInkCanvasSelectionCover != null)
|
||
{
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
|
||
}
|
||
|
||
// 禁用InkCanvas的选择功能，去除控制点
|
||
if (inkCanvas != null)
|
||
{
|
||
// 清除当前选择
|
||
inkCanvas.Select(new StrokeCollection());
|
||
// 保持选择模式，这样用户可以直接点击墨迹来选择
|
||
inkCanvas.EditingMode = InkCanvasEditingMode.Select;
|
||
}
|
||
|
||
SyncPdfPageSidebarWithCanvas();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 取消选中元素
|
||
/// </summary>
|
||
/// <param name="element">要取消选中的元素</param>
|
||
/// <remarks>
|
||
/// - 隐藏图片选择工具栏
|
||
/// - 隐藏图片缩放选择点
|
||
/// - 确保选择框隐藏
|
||
/// - 确保InkCanvas处于选择模式，这样用户可以直接点击墨迹来选择
|
||
/// </remarks>
|
||
private void UnselectElement(FrameworkElement element)
|
||
{
|
||
// 去除选中效果
|
||
|
||
// 隐藏图片选择工具栏
|
||
if (BorderImageSelectionControl != null)
|
||
{
|
||
BorderImageSelectionControl.Visibility = Visibility.Collapsed;
|
||
}
|
||
|
||
// 隐藏图片缩放选择点
|
||
HideImageResizeHandles();
|
||
|
||
// 墨迹选择工具栏通过GridInkCanvasSelectionCover的可见性来控制
|
||
// 不需要直接设置BorderStrokeSelectionControl.Visibility
|
||
|
||
// 确保选择框隐藏
|
||
if (GridInkCanvasSelectionCover != null)
|
||
{
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
|
||
}
|
||
|
||
// 确保InkCanvas处于选择模式，这样用户可以直接点击墨迹来选择
|
||
if (inkCanvas != null)
|
||
{
|
||
inkCanvas.EditingMode = InkCanvasEditingMode.Select;
|
||
}
|
||
|
||
SyncPdfPageSidebarWithCanvas();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 应用矩阵变换到元素
|
||
/// </summary>
|
||
/// <param name="element">要变换的元素</param>
|
||
/// <param name="matrix">变换矩阵</param>
|
||
/// <remarks>
|
||
/// - 获取元素的RenderTransform，如果不存在则创建新的TransformGroup
|
||
/// - 创建MatrixTransform
|
||
/// - 将MatrixTransform添加到TransformGroup
|
||
/// </remarks>
|
||
private void ApplyElementMatrixTransform(FrameworkElement element, Matrix matrix)
|
||
{
|
||
if (element.RenderTransform is TransformGroup transformGroup)
|
||
{
|
||
// 创建MatrixTransform
|
||
var matrixTransform = new MatrixTransform(matrix);
|
||
|
||
// 将MatrixTransform添加到TransformGroup
|
||
transformGroup.Children.Add(matrixTransform);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理滚轮缩放的核心机制
|
||
/// </summary>
|
||
/// <param name="element">要缩放的元素</param>
|
||
/// <param name="e">鼠标滚轮事件参数</param>
|
||
/// <remarks>
|
||
/// - 根据滚轮方向确定缩放比例（向上1.1倍，向下0.9倍）
|
||
/// - 计算选中元素的中心点作为缩放中心
|
||
/// - 创建 Matrix 对象并应用 ScaleAt 变换
|
||
/// - 对选中的图片元素应用矩阵变换
|
||
/// - 对选中的笔画应用 Transform 方法
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void ApplyWheelScaleTransform(FrameworkElement element, MouseWheelEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
// 根据滚轮方向确定缩放比例（向上1.1倍，向下0.9倍）
|
||
double scaleFactor = e.Delta > 0 ? 1.1 : 0.9;
|
||
|
||
// 计算选中元素的中心点作为缩放中心
|
||
var elementCenter = new Point(element.ActualWidth / 2, element.ActualHeight / 2);
|
||
|
||
// 创建 Matrix 对象并应用 ScaleAt 变换
|
||
var matrix = new Matrix();
|
||
matrix.ScaleAt(scaleFactor, scaleFactor, elementCenter.X, elementCenter.Y);
|
||
|
||
// 对选中的图片元素调用 ApplyElementMatrixTransform
|
||
ApplyElementMatrixTransform(element, matrix);
|
||
|
||
// 对选中的笔画应用 Transform 方法（如果有选中的笔画）
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
|
||
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"滚轮缩放失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 矩阵变换的完整实现
|
||
/// </summary>
|
||
/// <param name="element">要变换的元素</param>
|
||
/// <param name="matrix">变换矩阵</param>
|
||
/// <param name="saveHistory">是否保存历史记录</param>
|
||
/// <remarks>
|
||
/// - 获取元素的 RenderTransform，如果不存在则创建新的 TransformGroup
|
||
/// - 保存初始变换状态用于历史记录
|
||
/// - 创建新的 TransformGroup 并添加 MatrixTransform
|
||
/// - 将新的变换组添加到现有的变换组中
|
||
/// - 如果启用了历史记录，提交变换历史
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void ApplyMatrixTransformToElement(FrameworkElement element, Matrix matrix, bool saveHistory = true)
|
||
{
|
||
try
|
||
{
|
||
// 获取元素的 RenderTransform，如果不存在则创建新的 TransformGroup
|
||
TransformGroup transformGroup = element.RenderTransform as TransformGroup;
|
||
if (transformGroup == null)
|
||
{
|
||
transformGroup = new TransformGroup();
|
||
element.RenderTransform = transformGroup;
|
||
}
|
||
|
||
// 保存初始变换状态用于历史记录
|
||
var initialTransform = transformGroup.Clone();
|
||
|
||
// 创建新的 TransformGroup 并添加 MatrixTransform
|
||
var newTransformGroup = new TransformGroup();
|
||
newTransformGroup.Children.Add(new MatrixTransform(matrix));
|
||
|
||
// 将新的变换组添加到现有的变换组中
|
||
transformGroup.Children.Add(newTransformGroup);
|
||
|
||
// 如果启用了历史记录，提交变换历史
|
||
if (saveHistory)
|
||
{
|
||
CommitTransformHistory(element, initialTransform, transformGroup);
|
||
}
|
||
|
||
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"矩阵变换失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 鼠标拖动的完整实现机制
|
||
/// </summary>
|
||
/// <param name="element">要拖动的元素</param>
|
||
/// <param name="currentPoint">当前鼠标位置</param>
|
||
/// <param name="startPoint">起始鼠标位置</param>
|
||
/// <remarks>
|
||
/// - 计算鼠标移动的位移向量
|
||
/// - 创建 Matrix 对象并应用 Translate 变换
|
||
/// - 对选中的图片元素应用矩阵变换
|
||
/// - 对选中的笔画应用变换
|
||
/// - 更新选择框的位置（如果有选择框）
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void ApplyMouseDragTransform(FrameworkElement element, Point currentPoint, Point startPoint)
|
||
{
|
||
try
|
||
{
|
||
// 计算鼠标移动的位移向量
|
||
var delta = currentPoint - startPoint;
|
||
|
||
// 创建 Matrix 对象并应用 Translate 变换
|
||
var matrix = new Matrix();
|
||
matrix.Translate(delta.X, delta.Y);
|
||
|
||
// 对选中的图片元素应用矩阵变换
|
||
ApplyMatrixTransformToElement(element, matrix, false);
|
||
|
||
// 对选中的笔画应用变换
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
|
||
// 更新选择框的位置（如果有选择框）
|
||
UpdateSelectionBorderPosition(delta);
|
||
|
||
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"鼠标拖动失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 更新选择框位置
|
||
/// </summary>
|
||
/// <param name="delta">位移向量</param>
|
||
/// <remarks>
|
||
/// - 更新选择框位置的逻辑
|
||
/// - 更新 BorderStrokeSelectionControl 的位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void UpdateSelectionBorderPosition(Vector delta)
|
||
{
|
||
try
|
||
{
|
||
// 这里可以添加更新选择框位置的逻辑
|
||
// 例如更新 BorderStrokeSelectionControl 的位置
|
||
if (BorderStrokeSelectionControl != null)
|
||
{
|
||
var currentMargin = BorderStrokeSelectionControl.Margin;
|
||
BorderStrokeSelectionControl.Margin = new Thickness(
|
||
currentMargin.Left + delta.X,
|
||
currentMargin.Top + delta.Y,
|
||
currentMargin.Right,
|
||
currentMargin.Bottom
|
||
);
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"更新选择框位置失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 提交变换历史
|
||
/// </summary>
|
||
/// <param name="element">变换的元素</param>
|
||
/// <param name="initialTransform">初始变换</param>
|
||
/// <param name="finalTransform">最终变换</param>
|
||
/// <remarks>
|
||
/// - 提交变换历史到时间机器的逻辑
|
||
/// - 记录变换前后的状态
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void CommitTransformHistory(FrameworkElement element, TransformGroup initialTransform, TransformGroup finalTransform)
|
||
{
|
||
try
|
||
{
|
||
// 这里可以添加提交变换历史到时间机器的逻辑
|
||
// 例如记录变换前后的状态
|
||
LogHelper.WriteLogToFile($"变换历史已记录: 元素={element.Name}");
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"提交变换历史失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 触摸拖动的完整实现
|
||
/// </summary>
|
||
/// <param name="element">要操作的元素</param>
|
||
/// <param name="e">操作事件参数</param>
|
||
/// <remarks>
|
||
/// - 支持单指拖动和多指手势
|
||
/// - 可以同时进行平移、旋转和缩放
|
||
/// - 通过 ManipulationDelta 获取手势变化信息
|
||
/// - 应用平移
|
||
/// - 支持两指缩放和旋转操作
|
||
/// - 应用变换到元素
|
||
/// - 应用变换到选中的笔画
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void ApplyTouchManipulationTransform(FrameworkElement element, ManipulationDeltaEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
var md = e.DeltaManipulation;
|
||
var matrix = new Matrix();
|
||
|
||
// 支持单指拖动和多指手势
|
||
// 可以同时进行平移、旋转和缩放
|
||
|
||
// 通过 ManipulationDelta 获取手势变化信息
|
||
var translation = md.Translation;
|
||
var rotation = md.Rotation;
|
||
var scale = md.Scale;
|
||
|
||
// 应用平移
|
||
if (translation.X != 0 || translation.Y != 0)
|
||
{
|
||
matrix.Translate(translation.X, translation.Y);
|
||
}
|
||
|
||
// 支持两指缩放和旋转操作
|
||
if (e.Manipulators.Count() >= 2)
|
||
{
|
||
var center = e.ManipulationOrigin;
|
||
|
||
// 应用缩放
|
||
if (scale.X != 1.0 || scale.Y != 1.0)
|
||
{
|
||
matrix.ScaleAt(scale.X, scale.Y, center.X, center.Y);
|
||
}
|
||
|
||
// 应用旋转
|
||
if (rotation != 0)
|
||
{
|
||
matrix.RotateAt(rotation, center.X, center.Y);
|
||
}
|
||
}
|
||
|
||
// 应用变换到元素
|
||
ApplyMatrixTransformToElement(element, matrix, false);
|
||
|
||
// 应用变换到选中的笔画
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
|
||
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"触摸操作失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建并压缩图片
|
||
/// </summary>
|
||
/// <param name="filePath">图片文件路径</param>
|
||
/// <returns>创建的Image对象</returns>
|
||
/// <remarks>
|
||
/// - 创建文件依赖目录
|
||
/// - 复制文件到依赖目录
|
||
/// - 创建BitmapImage
|
||
/// - 如果图片尺寸大于1920x1080且设置了压缩图片，则压缩图片
|
||
/// - 否则使用原始尺寸
|
||
/// - 返回创建的Image对象
|
||
/// </remarks>
|
||
/// <summary>与图片选择工具栏、缩放控制点联动的画布位图类元素（普通图片或多页 PDF 嵌入）。</summary>
|
||
private static bool IsBitmapLikeCanvasElement(FrameworkElement fe)
|
||
{
|
||
return fe is Image || fe is PdfEmbeddedView;
|
||
}
|
||
|
||
private async Task<FrameworkElement> CreateAndCompressImageAsync(string filePath)
|
||
{
|
||
string fileExtension = Path.GetExtension(filePath);
|
||
if (string.Equals(fileExtension, ".pdf", StringComparison.OrdinalIgnoreCase))
|
||
return await CreateAndCompressImageFromPdfAsync(filePath);
|
||
|
||
string savePath = Path.Combine(Settings.Automation.AutoSavedStrokesLocation, "File Dependency");
|
||
if (!Directory.Exists(savePath))
|
||
{
|
||
Directory.CreateDirectory(savePath);
|
||
}
|
||
|
||
string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
|
||
string newFilePath = Path.Combine(savePath, timestamp + fileExtension);
|
||
|
||
await Task.Run(() => File.Copy(filePath, newFilePath, true));
|
||
|
||
return await Dispatcher.InvokeAsync(() =>
|
||
{
|
||
BitmapImage bitmapImage = new BitmapImage();
|
||
bitmapImage.BeginInit();
|
||
bitmapImage.UriSource = new Uri(newFilePath);
|
||
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
|
||
bitmapImage.EndInit();
|
||
|
||
int width = bitmapImage.PixelWidth;
|
||
int height = bitmapImage.PixelHeight;
|
||
|
||
Image image = new Image();
|
||
// 设置拉伸模式为Fill，支持任意比例缩放
|
||
image.Stretch = Stretch.Fill;
|
||
|
||
if (isLoaded && Settings.Canvas.IsCompressPicturesUploaded && (width > 1920 || height > 1080))
|
||
{
|
||
double scaleX = 1920.0 / width;
|
||
double scaleY = 1080.0 / height;
|
||
double scale = Math.Min(scaleX, scaleY);
|
||
|
||
TransformedBitmap transformedBitmap = new TransformedBitmap(bitmapImage, new ScaleTransform(scale, scale));
|
||
|
||
image.Source = transformedBitmap;
|
||
image.Width = transformedBitmap.PixelWidth;
|
||
image.Height = transformedBitmap.PixelHeight;
|
||
}
|
||
else
|
||
{
|
||
image.Source = bitmapImage;
|
||
image.Width = width;
|
||
image.Height = height;
|
||
}
|
||
|
||
return image;
|
||
});
|
||
}
|
||
|
||
/// <summary>
|
||
/// 插入完整 PDF：嵌入控件内可翻页，右下角显示页码（类似希沃白板交互）。
|
||
/// </summary>
|
||
private async Task<PdfEmbeddedView> CreateAndCompressImageFromPdfAsync(string filePath)
|
||
{
|
||
try
|
||
{
|
||
string savePath = Path.Combine(Settings.Automation.AutoSavedStrokesLocation, "File Dependency");
|
||
if (!Directory.Exists(savePath))
|
||
Directory.CreateDirectory(savePath);
|
||
|
||
string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
|
||
string newFilePath = Path.Combine(savePath, timestamp + ".pdf");
|
||
await Task.Run(() => File.Copy(filePath, newFilePath, true));
|
||
|
||
uint pageCount = await PdfWinRtHelper.GetPageCountAsync(newFilePath);
|
||
if (pageCount == 0)
|
||
{
|
||
ShowNotification("无法打开 PDF（可能已加密、损坏或不支持）。");
|
||
return null;
|
||
}
|
||
|
||
bool compress = isLoaded && Settings.Canvas.IsCompressPicturesUploaded;
|
||
var view = new PdfEmbeddedView();
|
||
await view.InitializeAsync(newFilePath, pageCount, compress);
|
||
view.Tag = filePath;
|
||
return view;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"插入 PDF 失败: {ex.Message}", LogHelper.LogType.Error);
|
||
ShowNotification($"插入 PDF 失败: {ex.Message}");
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/// <summary>从保存的 <see cref="CanvasElementInfo"/> 恢复 PDF（与打开墨迹时的图片恢复流程一致，不单独写入时间轴）。</summary>
|
||
private async Task RestorePdfFromElementInfoAsync(CanvasElementInfo info)
|
||
{
|
||
if (info == null || inkCanvas == null) return;
|
||
if (!string.Equals(info.Type, "Pdf", StringComparison.OrdinalIgnoreCase)) return;
|
||
if (string.IsNullOrEmpty(info.SourcePath) || !File.Exists(info.SourcePath)) return;
|
||
|
||
try
|
||
{
|
||
uint pageCount = await PdfWinRtHelper.GetPageCountAsync(info.SourcePath);
|
||
if (pageCount == 0) return;
|
||
|
||
bool compress = isLoaded && Settings.Canvas.IsCompressPicturesUploaded;
|
||
uint initial = 0;
|
||
if (info.PdfCurrentPage.HasValue)
|
||
initial = (uint)Math.Max(0, Math.Min(info.PdfCurrentPage.Value, (int)pageCount - 1));
|
||
|
||
var view = new PdfEmbeddedView
|
||
{
|
||
Name = "pdf_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff")
|
||
};
|
||
await view.InitializeAsync(info.SourcePath, pageCount, compress, initial);
|
||
|
||
if (info.Width > 0) view.Width = info.Width;
|
||
if (info.Height > 0) view.Height = info.Height;
|
||
|
||
InkCanvas.SetLeft(view, info.Left);
|
||
InkCanvas.SetTop(view, info.Top);
|
||
|
||
InitializeElementTransform(view);
|
||
BindElementEvents(view);
|
||
inkCanvas.Children.Add(view);
|
||
_pdfSidebarNextPositionUseHostTransform = true;
|
||
SyncPdfPageSidebarWithCanvas();
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"从 .elements.json 恢复 PDF 失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Media
|
||
/// <summary>
|
||
/// 处理媒体插入按钮点击事件
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 打开文件选择对话框，选择媒体文件
|
||
/// - 读取媒体文件字节
|
||
/// - 创建MediaElement
|
||
/// - 居中缩放MediaElement
|
||
/// - 设置位置并添加到画布
|
||
/// - 设置LoadedBehavior和UnloadedBehavior为Manual
|
||
/// - 媒体加载完成后播放并立即暂停
|
||
/// - 提交到时间机器历史记录
|
||
/// </remarks>
|
||
private async void BtnMediaInsert_Click(object sender, RoutedEventArgs e)
|
||
{
|
||
OpenFileDialog openFileDialog = new OpenFileDialog();
|
||
openFileDialog.Filter = "Media files (*.mp4; *.avi; *.wmv)|*.mp4;*.avi;*.wmv";
|
||
|
||
if (openFileDialog.ShowDialog() == true)
|
||
{
|
||
string filePath = openFileDialog.FileName;
|
||
|
||
byte[] mediaBytes = await Task.Run(() => File.ReadAllBytes(filePath));
|
||
|
||
MediaElement mediaElement = await CreateMediaElementAsync(filePath);
|
||
|
||
if (mediaElement != null)
|
||
{
|
||
CenterAndScaleElement(mediaElement);
|
||
|
||
InkCanvas.SetLeft(mediaElement, 0);
|
||
InkCanvas.SetTop(mediaElement, 0);
|
||
inkCanvas.Children.Add(mediaElement);
|
||
|
||
mediaElement.LoadedBehavior = MediaState.Manual;
|
||
mediaElement.UnloadedBehavior = MediaState.Manual;
|
||
mediaElement.Loaded += async (_, args) =>
|
||
{
|
||
mediaElement.Play();
|
||
await Task.Delay(100);
|
||
mediaElement.Pause();
|
||
};
|
||
|
||
timeMachine.CommitElementInsertHistory(mediaElement);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建MediaElement
|
||
/// </summary>
|
||
/// <param name="filePath">媒体文件路径</param>
|
||
/// <returns>创建的MediaElement对象</returns>
|
||
/// <remarks>
|
||
/// - 创建文件依赖目录
|
||
/// - 创建MediaElement
|
||
/// - 设置Source、名称、LoadedBehavior和UnloadedBehavior
|
||
/// - 设置宽度和高度
|
||
/// - 复制文件到依赖目录
|
||
/// - 更新Source为新文件路径
|
||
/// - 返回创建的MediaElement对象
|
||
/// </remarks>
|
||
private async Task<MediaElement> CreateMediaElementAsync(string filePath)
|
||
{
|
||
string savePath = Path.Combine(Settings.Automation.AutoSavedStrokesLocation, "File Dependency");
|
||
if (!Directory.Exists(savePath))
|
||
{
|
||
Directory.CreateDirectory(savePath);
|
||
}
|
||
return await Dispatcher.InvokeAsync(() =>
|
||
{
|
||
MediaElement mediaElement = new MediaElement();
|
||
mediaElement.Source = new Uri(filePath);
|
||
string timestamp = "media_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
|
||
mediaElement.Name = timestamp;
|
||
mediaElement.LoadedBehavior = MediaState.Manual;
|
||
mediaElement.UnloadedBehavior = MediaState.Manual;
|
||
|
||
mediaElement.Width = 256;
|
||
mediaElement.Height = 256;
|
||
|
||
string fileExtension = Path.GetExtension(filePath);
|
||
string newFilePath = Path.Combine(savePath, mediaElement.Name + fileExtension);
|
||
|
||
File.Copy(filePath, newFilePath, true);
|
||
|
||
mediaElement.Source = new Uri(newFilePath);
|
||
|
||
return mediaElement;
|
||
});
|
||
}
|
||
#endregion
|
||
|
||
#region Image Operations
|
||
|
||
/// <summary>
|
||
/// 旋转图片
|
||
/// </summary>
|
||
/// <param name="image">要旋转的图片</param>
|
||
/// <param name="angle">旋转角度（正数为顺时针，负数为逆时针）</param>
|
||
private void RotateImage(Image image, double angle)
|
||
{
|
||
if (image == null) return;
|
||
|
||
try
|
||
{
|
||
// 获取当前的变换
|
||
var transformGroup = image.RenderTransform as TransformGroup ?? new TransformGroup();
|
||
|
||
// 查找现有的旋转变换
|
||
RotateTransform rotateTransform = null;
|
||
foreach (Transform transform in transformGroup.Children)
|
||
{
|
||
if (transform is RotateTransform rt)
|
||
{
|
||
rotateTransform = rt;
|
||
break;
|
||
}
|
||
}
|
||
|
||
// 如果没有旋转变换，创建一个新的
|
||
if (rotateTransform == null)
|
||
{
|
||
rotateTransform = new RotateTransform();
|
||
transformGroup.Children.Add(rotateTransform);
|
||
}
|
||
|
||
// 设置旋转中心为图片中心
|
||
rotateTransform.CenterX = image.ActualWidth / 2;
|
||
rotateTransform.CenterY = image.ActualHeight / 2;
|
||
|
||
// 累加旋转角度
|
||
rotateTransform.Angle = (rotateTransform.Angle + angle) % 360;
|
||
|
||
// 应用变换
|
||
image.RenderTransform = transformGroup;
|
||
|
||
// 提交到时间机器以支持撤销
|
||
// 注意：旋转操作目前不支持撤销，因为需要更复杂的历史记录机制
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
Debug.WriteLine($"旋转图片时发生错误: {ex.Message}");
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 克隆图片
|
||
/// </summary>
|
||
/// <param name="image">要克隆的图片</param>
|
||
private Image CloneImage(Image image)
|
||
{
|
||
if (image == null) return null;
|
||
|
||
try
|
||
{
|
||
// 创建图片的副本
|
||
var clonedImage = new Image
|
||
{
|
||
Source = image.Source,
|
||
Width = image.Width,
|
||
Height = image.Height,
|
||
Stretch = image.Stretch,
|
||
RenderTransform = image.RenderTransform?.Clone()
|
||
};
|
||
|
||
// 设置位置，稍微偏移以避免重叠
|
||
InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
|
||
InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
|
||
|
||
// 设置图片属性，避免被InkCanvas选择系统处理
|
||
clonedImage.IsHitTestVisible = true;
|
||
clonedImage.Focusable = false;
|
||
|
||
// 初始化变换
|
||
InitializeElementTransform(clonedImage);
|
||
|
||
// 绑定事件
|
||
BindElementEvents(clonedImage);
|
||
|
||
// 添加到画布
|
||
inkCanvas.Children.Add(clonedImage);
|
||
|
||
// 提交到时间机器以支持撤销
|
||
timeMachine.CommitElementInsertHistory(clonedImage);
|
||
|
||
return clonedImage;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
LogHelper.WriteLogToFile($"克隆图片时发生错误: {ex.Message}", LogHelper.LogType.Error);
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 克隆图片到新页面
|
||
/// </summary>
|
||
/// <param name="image">要克隆的图片</param>
|
||
private void CloneImageToNewBoard(Image image)
|
||
{
|
||
if (image == null) return;
|
||
|
||
try
|
||
{
|
||
// 创建图片的副本
|
||
var clonedImage = new Image
|
||
{
|
||
Source = image.Source,
|
||
Width = image.Width,
|
||
Height = image.Height,
|
||
Stretch = image.Stretch,
|
||
RenderTransform = image.RenderTransform?.Clone()
|
||
};
|
||
|
||
// 设置位置，稍微偏移以避免重叠
|
||
InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
|
||
InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
|
||
|
||
// 创建新页面
|
||
BtnWhiteBoardAdd_Click(null, null);
|
||
|
||
// 添加到新页面的画布
|
||
inkCanvas.Children.Add(clonedImage);
|
||
|
||
// 提交到时间机器以支持撤销
|
||
timeMachine.CommitElementInsertHistory(clonedImage);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
Debug.WriteLine($"克隆图片到新页面时发生错误: {ex.Message}");
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 缩放图片
|
||
/// </summary>
|
||
/// <param name="image">要缩放的图片</param>
|
||
/// <param name="scaleFactor">缩放因子（大于1为放大，小于1为缩小）</param>
|
||
private void ScaleImage(Image image, double scaleFactor)
|
||
{
|
||
if (image == null) return;
|
||
|
||
try
|
||
{
|
||
// 获取当前的变换
|
||
var transformGroup = image.RenderTransform as TransformGroup ?? new TransformGroup();
|
||
|
||
// 查找现有的缩放变换
|
||
ScaleTransform scaleTransform = null;
|
||
foreach (Transform transform in transformGroup.Children)
|
||
{
|
||
if (transform is ScaleTransform st)
|
||
{
|
||
scaleTransform = st;
|
||
break;
|
||
}
|
||
}
|
||
|
||
// 如果没有缩放变换，创建一个新的
|
||
if (scaleTransform == null)
|
||
{
|
||
scaleTransform = new ScaleTransform();
|
||
transformGroup.Children.Add(scaleTransform);
|
||
}
|
||
|
||
// 设置缩放中心为图片中心
|
||
scaleTransform.CenterX = image.ActualWidth / 2;
|
||
scaleTransform.CenterY = image.ActualHeight / 2;
|
||
|
||
// 应用缩放因子
|
||
scaleTransform.ScaleX *= scaleFactor;
|
||
scaleTransform.ScaleY *= scaleFactor;
|
||
|
||
// 应用变换
|
||
image.RenderTransform = transformGroup;
|
||
|
||
// 提交到时间机器以支持撤销
|
||
// 注意：缩放操作目前不支持撤销，因为需要更复杂的历史记录机制
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
Debug.WriteLine($"缩放图片时发生错误: {ex.Message}");
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 删除图片
|
||
/// </summary>
|
||
/// <param name="image">要删除的图片</param>
|
||
private void DeleteImage(Image image)
|
||
{
|
||
if (image == null) return;
|
||
|
||
try
|
||
{
|
||
// 从画布中移除图片
|
||
if (inkCanvas.Children.Contains(image))
|
||
{
|
||
inkCanvas.Children.Remove(image);
|
||
|
||
// 提交到时间机器以支持撤销
|
||
timeMachine.CommitElementRemoveHistory(image);
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
Debug.WriteLine($"删除图片时发生错误: {ex.Message}");
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
/// <summary>
|
||
/// 居中并缩放元素
|
||
/// </summary>
|
||
/// <param name="element">要居中缩放的元素</param>
|
||
/// <remarks>
|
||
/// - 确保元素已加载且有有效尺寸
|
||
/// - 如果元素尺寸无效，等待加载完成后再处理
|
||
/// - 获取画布的实际尺寸
|
||
/// - 如果画布尺寸为0，使用窗口尺寸作为备选
|
||
/// - 如果仍然为0，使用屏幕尺寸
|
||
/// - 计算最大允许尺寸（画布的70%）
|
||
/// - 获取元素的当前尺寸
|
||
/// - 计算缩放比例
|
||
/// - 如果元素本身比最大尺寸小，不进行缩放
|
||
/// - 计算新的尺寸
|
||
/// - 设置元素尺寸
|
||
/// - 计算居中位置
|
||
/// - 确保位置不为负数
|
||
/// - 设置位置
|
||
/// - 保持TransformGroup，不清除RenderTransform
|
||
/// - 只有在没有TransformGroup时才创建
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void CenterAndScaleElement(FrameworkElement element)
|
||
{
|
||
try
|
||
{
|
||
// 确保元素已加载且有有效尺寸
|
||
if (element == null || element.ActualWidth <= 0 || element.ActualHeight <= 0)
|
||
{
|
||
// 如果元素尺寸无效，等待加载完成后再处理
|
||
element.Loaded += (sender, e) =>
|
||
{
|
||
Dispatcher.BeginInvoke(new Action(() =>
|
||
{
|
||
CenterAndScaleElement(element);
|
||
}), DispatcherPriority.Loaded);
|
||
};
|
||
return;
|
||
}
|
||
|
||
// 获取画布的实际尺寸
|
||
double canvasWidth = inkCanvas.ActualWidth;
|
||
double canvasHeight = inkCanvas.ActualHeight;
|
||
|
||
// 如果画布尺寸为0，使用窗口尺寸作为备选
|
||
if (canvasWidth <= 0 || canvasHeight <= 0)
|
||
{
|
||
canvasWidth = ActualWidth;
|
||
canvasHeight = ActualHeight;
|
||
}
|
||
|
||
// 如果仍然为0，使用屏幕尺寸
|
||
if (canvasWidth <= 0 || canvasHeight <= 0)
|
||
{
|
||
canvasWidth = SystemParameters.PrimaryScreenWidth;
|
||
canvasHeight = SystemParameters.PrimaryScreenHeight;
|
||
}
|
||
|
||
// 计算最大允许尺寸（画布的70%）
|
||
double maxWidth = canvasWidth * 0.7;
|
||
double maxHeight = canvasHeight * 0.7;
|
||
|
||
// 获取元素的当前尺寸
|
||
double elementWidth = element.ActualWidth;
|
||
double elementHeight = element.ActualHeight;
|
||
|
||
// 计算缩放比例
|
||
double scaleX = maxWidth / elementWidth;
|
||
double scaleY = maxHeight / elementHeight;
|
||
double scale = Math.Min(scaleX, scaleY);
|
||
|
||
// 如果元素本身比最大尺寸小，不进行缩放
|
||
if (scale > 1.0)
|
||
{
|
||
scale = 1.0;
|
||
}
|
||
|
||
// 计算新的尺寸
|
||
double newWidth = elementWidth * scale;
|
||
double newHeight = elementHeight * scale;
|
||
|
||
// 设置元素尺寸
|
||
element.Width = newWidth;
|
||
element.Height = newHeight;
|
||
|
||
// 计算居中位置
|
||
double centerX = (canvasWidth - newWidth) / 2;
|
||
double centerY = (canvasHeight - newHeight) / 2;
|
||
|
||
// 确保位置不为负数
|
||
centerX = Math.Max(0, centerX);
|
||
centerY = Math.Max(0, centerY);
|
||
|
||
// 设置位置
|
||
InkCanvas.SetLeft(element, centerX);
|
||
InkCanvas.SetTop(element, centerY);
|
||
|
||
// 保持TransformGroup，不清除RenderTransform
|
||
// 这样可以保持滚轮缩放和拖动功能
|
||
if (element.RenderTransform == null || element.RenderTransform == Transform.Identity)
|
||
{
|
||
// 只有在没有TransformGroup时才创建
|
||
InitializeElementTransform(element);
|
||
}
|
||
|
||
LogHelper.WriteLogToFile($"元素居中完成: 位置({centerX}, {centerY}), 尺寸({newWidth}x{newHeight})");
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"元素居中失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 初始化InkCanvas选择设置
|
||
/// </summary>
|
||
/// <remarks>
|
||
/// - 清除当前选择，避免显示控制点
|
||
/// - 设置编辑模式为非选择模式
|
||
/// </remarks>
|
||
private void InitializeInkCanvasSelectionSettings()
|
||
{
|
||
if (inkCanvas != null)
|
||
{
|
||
// 清除当前选择，避免显示控制点
|
||
inkCanvas.Select(new StrokeCollection());
|
||
// 设置编辑模式为非选择模式
|
||
inkCanvas.EditingMode = InkCanvasEditingMode.None;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 更新图片选择工具栏位置
|
||
/// </summary>
|
||
/// <param name="element">图片元素</param>
|
||
/// <remarks>
|
||
/// - 获取元素的实际边界（考虑变换）
|
||
/// - 计算工具栏位置（显示在图片下方）
|
||
/// - 确保工具栏不超出画布边界
|
||
/// - 设置工具栏位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void UpdateImageSelectionToolbarPosition(FrameworkElement element)
|
||
{
|
||
try
|
||
{
|
||
if (BorderImageSelectionControl == null || element == null) return;
|
||
|
||
// 获取元素的实际边界（考虑变换）
|
||
Rect elementBounds = GetElementActualBounds(element);
|
||
|
||
// 计算工具栏位置（显示在图片下方）
|
||
double toolbarLeft = elementBounds.Left + (elementBounds.Width / 2) - (BorderImageSelectionControl.ActualWidth / 2);
|
||
double toolbarTop = elementBounds.Bottom + 10; // 图片下方10像素
|
||
|
||
// 确保工具栏不超出画布边界
|
||
double maxLeft = inkCanvas.ActualWidth - BorderImageSelectionControl.ActualWidth;
|
||
double maxTop = inkCanvas.ActualHeight - BorderImageSelectionControl.ActualHeight;
|
||
|
||
toolbarLeft = Math.Max(0, Math.Min(toolbarLeft, maxLeft));
|
||
toolbarTop = Math.Max(0, Math.Min(toolbarTop, maxTop));
|
||
|
||
// 设置工具栏位置
|
||
BorderImageSelectionControl.Margin = new Thickness(toolbarLeft, toolbarTop, 0, 0);
|
||
|
||
var pdfTarget = GetPdfSidebarTargetElement();
|
||
if (pdfTarget != null && BorderPdfPageSidebar != null && BorderPdfPageSidebar.Visibility == Visibility.Visible)
|
||
UpdatePdfPageSidebarPosition(pdfTarget);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"更新图片选择工具栏位置失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
private const double PdfPageSidebarGap = 10;
|
||
|
||
/// <summary>
|
||
/// 侧栏绑定的 PDF：若当前选中的是 PDF 则用该项；否则用画布上最后一个 PdfEmbeddedView。
|
||
/// </summary>
|
||
private PdfEmbeddedView GetPdfSidebarTargetElement()
|
||
{
|
||
if (inkCanvas == null) return null;
|
||
var pdfs = inkCanvas.Children.OfType<PdfEmbeddedView>().ToList();
|
||
if (pdfs.Count == 0) return null;
|
||
if (currentSelectedElement is PdfEmbeddedView sel && pdfs.Contains(sel))
|
||
return sel;
|
||
return pdfs[pdfs.Count - 1];
|
||
}
|
||
|
||
private void AttachPdfPageSidebarEvents(PdfEmbeddedView pdf)
|
||
{
|
||
if (pdf == null || _pdfPageSidebarEventSource == pdf) return;
|
||
DetachPdfPageSidebarEvents();
|
||
_pdfPageSidebarEventSource = pdf;
|
||
_pdfPageSidebarEventSource.PageNavigationStateChanged += SelectedPdf_PageNavigationStateChanged;
|
||
_pdfPageSidebarEventSource.LayoutUpdated += OnPdfSidebarTargetLayoutUpdated;
|
||
}
|
||
|
||
private void DetachPdfPageSidebarEvents()
|
||
{
|
||
if (_pdfPageSidebarEventSource != null)
|
||
{
|
||
_pdfPageSidebarEventSource.PageNavigationStateChanged -= SelectedPdf_PageNavigationStateChanged;
|
||
_pdfPageSidebarEventSource.LayoutUpdated -= OnPdfSidebarTargetLayoutUpdated;
|
||
_pdfPageSidebarEventSource = null;
|
||
}
|
||
}
|
||
|
||
private void OnPdfSidebarTargetLayoutUpdated(object sender, EventArgs e)
|
||
{
|
||
if (BorderPdfPageSidebar?.Visibility != Visibility.Visible || inkCanvas == null) return;
|
||
if (!(sender is PdfEmbeddedView p) || !ReferenceEquals(_pdfPageSidebarEventSource, p)) return;
|
||
if (!inkCanvas.Children.Contains(p))
|
||
SyncPdfPageSidebarWithCanvas();
|
||
else
|
||
RequestPdfSidebarPositionRefresh();
|
||
}
|
||
|
||
/// <summary>在下一帧合并更新侧栏位置（初始布局、翻页改尺寸后 ActualWidth 仍为 0 时尤其需要）。</summary>
|
||
private void RequestPdfSidebarPositionRefresh()
|
||
{
|
||
if (_pdfSidebarPositionRefreshPending) return;
|
||
_pdfSidebarPositionRefreshPending = true;
|
||
Dispatcher.BeginInvoke(new Action(() =>
|
||
{
|
||
_pdfSidebarPositionRefreshPending = false;
|
||
try
|
||
{
|
||
var t = GetPdfSidebarTargetElement();
|
||
if (t == null || BorderPdfPageSidebar?.Visibility != Visibility.Visible)
|
||
{
|
||
SyncPdfPageSidebarWithCanvas();
|
||
return;
|
||
}
|
||
|
||
if (!inkCanvas.Children.Contains(t))
|
||
{
|
||
SyncPdfPageSidebarWithCanvas();
|
||
return;
|
||
}
|
||
|
||
t.UpdateLayout();
|
||
inkCanvas.UpdateLayout();
|
||
UpdatePdfPageSidebarPosition(t);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"PDF 侧栏延迟定位失败: {ex.Message}", LogHelper.LogType.Warning);
|
||
}
|
||
}), DispatcherPriority.Render);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 画布上存在 PDF 时始终显示右侧页码栏并跟随目标 PDF；无任何 PDF 时隐藏。
|
||
/// </summary>
|
||
private void SyncPdfPageSidebarWithCanvas()
|
||
{
|
||
if (BorderPdfPageSidebar == null || inkCanvas == null) return;
|
||
|
||
// 屏幕模式（已退出白板/黑板）下不显示侧栏，避免画布仍含 PDF 时栏残留在桌面上
|
||
if (currentMode == 0)
|
||
{
|
||
DetachPdfPageSidebarEvents();
|
||
BorderPdfPageSidebar.Visibility = Visibility.Collapsed;
|
||
ResetPdfSidebarToIdle();
|
||
return;
|
||
}
|
||
|
||
var pdf = GetPdfSidebarTargetElement();
|
||
if (pdf == null)
|
||
{
|
||
DetachPdfPageSidebarEvents();
|
||
BorderPdfPageSidebar.Visibility = Visibility.Collapsed;
|
||
ResetPdfSidebarToIdle();
|
||
return;
|
||
}
|
||
|
||
AttachPdfPageSidebarEvents(pdf);
|
||
BorderPdfPageSidebar.Visibility = Visibility.Visible;
|
||
UpdatePdfSidebarFromPdf(pdf);
|
||
pdf.UpdateLayout();
|
||
inkCanvas.UpdateLayout();
|
||
UpdatePdfPageSidebarPosition(pdf);
|
||
RequestPdfSidebarPositionRefresh();
|
||
Dispatcher.BeginInvoke(new Action(() =>
|
||
{
|
||
var t = GetPdfSidebarTargetElement();
|
||
if (t != null && BorderPdfPageSidebar?.Visibility == Visibility.Visible && inkCanvas.Children.Contains(t))
|
||
UpdatePdfPageSidebarPosition(t);
|
||
}), DispatcherPriority.ContextIdle);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 将 PDF 专用页码栏贴在当前 PDF 右侧。常态与早期实现一致：画布坐标 + <c>Measure(Width, ∞)</c>；仅在 <see cref="_pdfSidebarNextPositionUseHostTransform"/> 为 true 时用宿主 Visual 变换对齐首帧。
|
||
/// </summary>
|
||
private void UpdatePdfPageSidebarPosition(FrameworkElement element)
|
||
{
|
||
try
|
||
{
|
||
if (BorderPdfPageSidebar == null || inkCanvas == null || !(element is PdfEmbeddedView pdfEl))
|
||
return;
|
||
|
||
if (!inkCanvas.Children.Contains(pdfEl))
|
||
{
|
||
SyncPdfPageSidebarWithCanvas();
|
||
return;
|
||
}
|
||
|
||
bool wantHostOnce = _pdfSidebarNextPositionUseHostTransform;
|
||
|
||
// 插入首帧：先布局再取界，便于 Transform 与墨迹一致；常态与最初 PDF 侧栏实现一致，不在此强制 UpdateLayout。
|
||
if (wantHostOnce)
|
||
pdfEl.UpdateLayout();
|
||
|
||
Rect b = GetElementActualBounds(pdfEl);
|
||
if (b.Width <= 0 || b.Height <= 0 || double.IsNaN(b.Width) || double.IsNaN(b.Height))
|
||
{
|
||
Dispatcher.BeginInvoke(new Action(() =>
|
||
{
|
||
var t = GetPdfSidebarTargetElement();
|
||
if (t is PdfEmbeddedView pe && inkCanvas.Children.Contains(pe) && BorderPdfPageSidebar?.Visibility == Visibility.Visible)
|
||
UpdatePdfPageSidebarPosition(pe);
|
||
}), DispatcherPriority.Loaded);
|
||
return;
|
||
}
|
||
|
||
Visual sidebarHost = VisualTreeHelper.GetParent(BorderPdfPageSidebar) as Visual;
|
||
double left = 0, top = 0, maxLeft = 0, maxTop = 0;
|
||
bool hostOk = false;
|
||
|
||
if (wantHostOnce && sidebarHost != null)
|
||
{
|
||
BorderPdfPageSidebar.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
|
||
double sidebarW = BorderPdfPageSidebar.DesiredSize.Width;
|
||
double sidebarH = BorderPdfPageSidebar.DesiredSize.Height;
|
||
if (sidebarW <= 0)
|
||
sidebarW = BorderPdfPageSidebar.Width;
|
||
if (sidebarH <= 0)
|
||
sidebarH = BorderPdfPageSidebar.ActualHeight;
|
||
if (sidebarH <= 0)
|
||
sidebarH = 220;
|
||
|
||
try
|
||
{
|
||
GeneralTransform inkToHost = inkCanvas.TransformToVisual(sidebarHost);
|
||
Point tl = inkToHost.Transform(new Point(b.Left, b.Top));
|
||
Point br = inkToHost.Transform(new Point(b.Right, b.Bottom));
|
||
double rightX = Math.Max(tl.X, br.X);
|
||
double midY = (tl.Y + br.Y) * 0.5;
|
||
left = rightX + PdfPageSidebarGap;
|
||
top = midY - sidebarH * 0.5;
|
||
|
||
var feHost = sidebarHost as FrameworkElement;
|
||
double hostW = feHost != null && feHost.ActualWidth > 0 ? feHost.ActualWidth : inkCanvas.ActualWidth;
|
||
double hostH = feHost != null && feHost.ActualHeight > 0 ? feHost.ActualHeight : inkCanvas.ActualHeight;
|
||
maxLeft = Math.Max(0, hostW - sidebarW);
|
||
maxTop = Math.Max(0, hostH - sidebarH);
|
||
|
||
if (left > maxLeft)
|
||
{
|
||
double leftEdge = Math.Min(tl.X, br.X);
|
||
double leftAlt = leftEdge - PdfPageSidebarGap - sidebarW;
|
||
if (leftAlt >= 0)
|
||
left = leftAlt;
|
||
}
|
||
|
||
hostOk = true;
|
||
}
|
||
catch
|
||
{
|
||
hostOk = false;
|
||
}
|
||
}
|
||
|
||
if (!hostOk)
|
||
{
|
||
// 与 ea74592「PDF 侧栏」初版一致：固定宽度测量竖向所需高度，再按墨迹边界与 inkCanvas 尺寸夹紧。
|
||
BorderPdfPageSidebar.Measure(new Size(BorderPdfPageSidebar.Width, double.PositiveInfinity));
|
||
double sidebarW = BorderPdfPageSidebar.DesiredSize.Width;
|
||
double sidebarH = BorderPdfPageSidebar.DesiredSize.Height;
|
||
if (sidebarW <= 0)
|
||
sidebarW = BorderPdfPageSidebar.Width;
|
||
if (sidebarH <= 0)
|
||
sidebarH = BorderPdfPageSidebar.ActualHeight;
|
||
if (sidebarH <= 0)
|
||
sidebarH = 220;
|
||
|
||
left = b.Right + PdfPageSidebarGap;
|
||
top = b.Top + (b.Height * 0.5) - (sidebarH * 0.5);
|
||
maxLeft = Math.Max(0, inkCanvas.ActualWidth - sidebarW);
|
||
maxTop = Math.Max(0, inkCanvas.ActualHeight - sidebarH);
|
||
if (left > maxLeft)
|
||
{
|
||
double leftAlt = b.Left - PdfPageSidebarGap - sidebarW;
|
||
if (leftAlt >= 0)
|
||
left = leftAlt;
|
||
}
|
||
}
|
||
|
||
if (wantHostOnce)
|
||
_pdfSidebarNextPositionUseHostTransform = false;
|
||
|
||
left = Math.Max(0, Math.Min(left, maxLeft));
|
||
top = Math.Max(0, Math.Min(top, maxTop));
|
||
|
||
BorderPdfPageSidebar.Margin = new Thickness(left, top, 0, 0);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"更新 PDF 右侧页码栏位置失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取元素的实际边界（考虑变换）
|
||
/// </summary>
|
||
/// <param name="element">要获取边界的元素</param>
|
||
/// <returns>元素的实际边界</returns>
|
||
/// <remarks>
|
||
/// - 获取元素的Left和Top位置
|
||
/// - 如果值为NaN，设为0
|
||
/// - 获取元素的宽度和高度
|
||
/// - 检查是否有RenderTransform
|
||
/// - 如果有变换，使用变换后的边界
|
||
/// - 变换失败时回退到简单计算
|
||
/// - 没有变换时直接使用位置和大小
|
||
/// - 包含异常处理
|
||
/// - 回退到基本计算
|
||
/// </remarks>
|
||
private Rect GetElementActualBounds(FrameworkElement element)
|
||
{
|
||
try
|
||
{
|
||
var left = InkCanvas.GetLeft(element);
|
||
var top = InkCanvas.GetTop(element);
|
||
|
||
if (double.IsNaN(left)) left = 0;
|
||
if (double.IsNaN(top)) top = 0;
|
||
|
||
var width = element.ActualWidth > 0 ? element.ActualWidth : element.Width;
|
||
var height = element.ActualHeight > 0 ? element.ActualHeight : element.Height;
|
||
|
||
// 检查是否有RenderTransform
|
||
if (element.RenderTransform != null && element.RenderTransform != Transform.Identity)
|
||
{
|
||
try
|
||
{
|
||
// 如果有变换，使用变换后的边界
|
||
var transform = element.TransformToAncestor(inkCanvas);
|
||
var elementBounds = new Rect(0, 0, width, height);
|
||
var transformedBounds = transform.TransformBounds(elementBounds);
|
||
return transformedBounds;
|
||
}
|
||
catch
|
||
{
|
||
// 变换失败时回退到简单计算
|
||
return new Rect(left, top, width, height);
|
||
}
|
||
}
|
||
|
||
// 没有变换时直接使用位置和大小
|
||
return new Rect(left, top, width, height);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"获取元素实际边界失败: {ex.Message}", LogHelper.LogType.Error);
|
||
// 回退到基本计算
|
||
var left = InkCanvas.GetLeft(element);
|
||
var top = InkCanvas.GetTop(element);
|
||
if (double.IsNaN(left)) left = 0;
|
||
if (double.IsNaN(top)) top = 0;
|
||
return new Rect(left, top, element.ActualWidth, element.ActualHeight);
|
||
}
|
||
}
|
||
|
||
#region Image Selection Toolbar Event Handlers
|
||
|
||
/// <summary>
|
||
/// 处理图片克隆功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前选中元素是否为图片
|
||
/// - 创建克隆图片
|
||
/// - 添加到画布
|
||
/// - 初始化变换
|
||
/// - 绑定事件
|
||
/// - 记录历史
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void BorderImageClone_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement is Image originalImage)
|
||
{
|
||
// 创建克隆图片
|
||
Image clonedImage = CloneImage(originalImage);
|
||
|
||
// 添加到画布
|
||
inkCanvas.Children.Add(clonedImage);
|
||
|
||
// 初始化变换
|
||
InitializeElementTransform(clonedImage);
|
||
|
||
// 绑定事件
|
||
BindElementEvents(clonedImage);
|
||
|
||
// 记录历史
|
||
timeMachine.CommitElementInsertHistory(clonedImage);
|
||
|
||
LogHelper.WriteLogToFile($"图片克隆完成: {clonedImage.Name}");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片克隆失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片克隆到新页面功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前选中元素是否为图片
|
||
/// - 创建新页面
|
||
/// - 创建克隆图片
|
||
/// - 设置图片属性，避免被InkCanvas选择系统处理
|
||
/// - 初始化变换
|
||
/// - 绑定事件
|
||
/// - 添加到新页面的画布
|
||
/// - 记录历史
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void BorderImageCloneToNewBoard_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement is Image originalImage)
|
||
{
|
||
// 创建新页面
|
||
BtnWhiteBoardAdd_Click(null, null);
|
||
|
||
// 创建克隆图片（不添加到当前画布，因为已经创建了新页面）
|
||
Image clonedImage = CreateClonedImage(originalImage);
|
||
|
||
if (clonedImage != null)
|
||
{
|
||
// 设置图片属性，避免被InkCanvas选择系统处理
|
||
clonedImage.IsHitTestVisible = true;
|
||
clonedImage.Focusable = false;
|
||
|
||
// 初始化变换
|
||
InitializeElementTransform(clonedImage);
|
||
|
||
// 绑定事件
|
||
BindElementEvents(clonedImage);
|
||
|
||
// 添加到新页面的画布
|
||
inkCanvas.Children.Add(clonedImage);
|
||
|
||
// 记录历史
|
||
timeMachine.CommitElementInsertHistory(clonedImage);
|
||
|
||
LogHelper.WriteLogToFile($"图片克隆到新页面完成: {clonedImage.Name}");
|
||
}
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片克隆到新页面失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片左旋转功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前是否有选中元素
|
||
/// - 应用旋转变换（向左旋转45度）
|
||
/// - 如果是图片元素，更新工具栏位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void BorderImageRotateLeft_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement != null)
|
||
{
|
||
ApplyRotateTransform(currentSelectedElement, -45);
|
||
|
||
// 更新工具栏位置
|
||
if (IsBitmapLikeCanvasElement(currentSelectedElement) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
||
{
|
||
UpdateImageSelectionToolbarPosition(currentSelectedElement);
|
||
}
|
||
|
||
LogHelper.WriteLogToFile("图片左旋转完成");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片左旋转失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片右旋转功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前是否有选中元素
|
||
/// - 应用旋转变换（向右旋转45度）
|
||
/// - 如果是图片元素，更新工具栏位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void BorderImageRotateRight_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement != null)
|
||
{
|
||
ApplyRotateTransform(currentSelectedElement, 45);
|
||
|
||
// 更新工具栏位置
|
||
if (IsBitmapLikeCanvasElement(currentSelectedElement) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
||
{
|
||
UpdateImageSelectionToolbarPosition(currentSelectedElement);
|
||
}
|
||
|
||
LogHelper.WriteLogToFile("图片右旋转完成");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片右旋转失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片缩放减小功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前是否有选中元素
|
||
/// - 计算元素中心点
|
||
/// - 应用缩放变换（缩小到0.9倍）
|
||
/// - 如果是图片元素，更新工具栏位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void GridImageScaleDecrease_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement != null)
|
||
{
|
||
var elementCenter = new Point(currentSelectedElement.ActualWidth / 2, currentSelectedElement.ActualHeight / 2);
|
||
ApplyScaleTransform(currentSelectedElement, 0.9, elementCenter);
|
||
|
||
// 更新工具栏位置
|
||
if (IsBitmapLikeCanvasElement(currentSelectedElement) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
||
{
|
||
UpdateImageSelectionToolbarPosition(currentSelectedElement);
|
||
}
|
||
|
||
LogHelper.WriteLogToFile("图片缩放减小完成");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片缩放减小失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片缩放增大功能
|
||
/// </summary>
|
||
/// <param name="sender">事件发送者</param>
|
||
/// <param name="e">事件参数</param>
|
||
/// <remarks>
|
||
/// - 检查当前是否有选中元素
|
||
/// - 计算元素中心点
|
||
/// - 应用缩放变换（放大到1.1倍）
|
||
/// - 如果是图片元素，更新工具栏位置
|
||
/// - 包含异常处理
|
||
/// </remarks>
|
||
private void GridImageScaleIncrease_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement != null)
|
||
{
|
||
var elementCenter = new Point(currentSelectedElement.ActualWidth / 2, currentSelectedElement.ActualHeight / 2);
|
||
ApplyScaleTransform(currentSelectedElement, 1.1, elementCenter);
|
||
|
||
// 更新工具栏位置
|
||
if (IsBitmapLikeCanvasElement(currentSelectedElement) && BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
||
{
|
||
UpdateImageSelectionToolbarPosition(currentSelectedElement);
|
||
}
|
||
|
||
LogHelper.WriteLogToFile("图片缩放增大完成");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片缩放增大失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
private void ResetPdfSidebarToIdle()
|
||
{
|
||
if (TextBlockPdfSidebarPageLabel != null)
|
||
{
|
||
TextBlockPdfSidebarPageLabel.Text = "— / —";
|
||
TextBlockPdfSidebarPageLabel.Opacity = 0.55;
|
||
}
|
||
|
||
if (BorderPdfSidebarPagePrev != null)
|
||
{
|
||
BorderPdfSidebarPagePrev.Opacity = 0.35;
|
||
BorderPdfSidebarPagePrev.IsHitTestVisible = false;
|
||
}
|
||
|
||
if (BorderPdfSidebarPageNext != null)
|
||
{
|
||
BorderPdfSidebarPageNext.Opacity = 0.35;
|
||
BorderPdfSidebarPageNext.IsHitTestVisible = false;
|
||
}
|
||
}
|
||
|
||
private void UpdatePdfSidebarFromPdf(PdfEmbeddedView pdf)
|
||
{
|
||
if (pdf == null) return;
|
||
|
||
if (TextBlockPdfSidebarPageLabel != null)
|
||
{
|
||
TextBlockPdfSidebarPageLabel.Text = pdf.PageLabelText;
|
||
TextBlockPdfSidebarPageLabel.Opacity = 1.0;
|
||
}
|
||
|
||
bool prevOk = pdf.CanGoPrevious;
|
||
bool nextOk = pdf.CanGoNext;
|
||
if (BorderPdfSidebarPagePrev != null)
|
||
{
|
||
BorderPdfSidebarPagePrev.Opacity = prevOk ? 1.0 : 0.35;
|
||
BorderPdfSidebarPagePrev.IsHitTestVisible = prevOk;
|
||
}
|
||
|
||
if (BorderPdfSidebarPageNext != null)
|
||
{
|
||
BorderPdfSidebarPageNext.Opacity = nextOk ? 1.0 : 0.35;
|
||
BorderPdfSidebarPageNext.IsHitTestVisible = nextOk;
|
||
}
|
||
}
|
||
|
||
private void SelectedPdf_PageNavigationStateChanged(object sender, EventArgs e)
|
||
{
|
||
Dispatcher.BeginInvoke(new Action(() =>
|
||
{
|
||
if (sender is PdfEmbeddedView pdf)
|
||
{
|
||
if (!inkCanvas.Children.Contains(pdf))
|
||
{
|
||
SyncPdfPageSidebarWithCanvas();
|
||
return;
|
||
}
|
||
|
||
UpdatePdfSidebarFromPdf(pdf);
|
||
UpdatePdfPageSidebarPosition(pdf);
|
||
RequestPdfSidebarPositionRefresh();
|
||
}
|
||
if (currentSelectedElement != null && IsBitmapLikeCanvasElement(currentSelectedElement))
|
||
{
|
||
UpdateImageSelectionToolbarPosition(currentSelectedElement);
|
||
if (ImageResizeHandlesCanvas?.Visibility == Visibility.Visible)
|
||
UpdateImageResizeHandlesPosition(GetElementActualBounds(currentSelectedElement));
|
||
}
|
||
}), DispatcherPriority.Loaded);
|
||
}
|
||
|
||
private async void BorderPdfSidebarPagePrev_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
var pdf = GetPdfSidebarTargetElement();
|
||
if (pdf != null && pdf.CanGoPrevious)
|
||
await pdf.GoToPreviousPageAsync();
|
||
SyncPdfPageSidebarWithCanvas();
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"PDF 上一页失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
private async void BorderPdfSidebarPageNext_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
var pdf = GetPdfSidebarTargetElement();
|
||
if (pdf != null && pdf.CanGoNext)
|
||
await pdf.GoToNextPageAsync();
|
||
SyncPdfPageSidebarWithCanvas();
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"PDF 下一页失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理图片删除功能
|
||
/// </summary>
|
||
private void BorderImageDelete_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (currentSelectedElement != null)
|
||
{
|
||
// 保存删除前的编辑模式
|
||
var previousEditingMode = inkCanvas.EditingMode;
|
||
|
||
// 记录删除历史
|
||
timeMachine.CommitElementRemoveHistory(currentSelectedElement);
|
||
|
||
var toRemove = currentSelectedElement;
|
||
// 从画布中移除
|
||
inkCanvas.Children.Remove(toRemove);
|
||
|
||
// 清除选中状态
|
||
UnselectElement(toRemove);
|
||
currentSelectedElement = null;
|
||
|
||
// 恢复到删除前的编辑模式
|
||
inkCanvas.EditingMode = previousEditingMode;
|
||
|
||
SyncPdfPageSidebarWithCanvas();
|
||
|
||
LogHelper.WriteLogToFile($"图片删除完成，已恢复到编辑模式: {previousEditingMode}");
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片删除失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 克隆图片的辅助方法（只创建图片，不添加到画布）
|
||
private Image CreateClonedImage(Image originalImage)
|
||
{
|
||
try
|
||
{
|
||
Image clonedImage = new Image();
|
||
|
||
// 复制图片源
|
||
if (originalImage.Source is BitmapSource bitmapSource)
|
||
{
|
||
clonedImage.Source = bitmapSource;
|
||
}
|
||
|
||
// 复制属性
|
||
clonedImage.Width = originalImage.Width;
|
||
clonedImage.Height = originalImage.Height;
|
||
clonedImage.Stretch = originalImage.Stretch;
|
||
clonedImage.StretchDirection = originalImage.StretchDirection;
|
||
|
||
// 复制位置（在新页面中居中显示）
|
||
double left = InkCanvas.GetLeft(originalImage);
|
||
double top = InkCanvas.GetTop(originalImage);
|
||
InkCanvas.SetLeft(clonedImage, left + 20); // 稍微偏移位置
|
||
InkCanvas.SetTop(clonedImage, top + 20);
|
||
|
||
// 复制变换
|
||
if (originalImage.RenderTransform is TransformGroup originalTransformGroup)
|
||
{
|
||
clonedImage.RenderTransform = originalTransformGroup.Clone();
|
||
}
|
||
|
||
// 设置名称
|
||
string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
|
||
clonedImage.Name = timestamp;
|
||
|
||
return clonedImage;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"克隆图片失败: {ex.Message}", LogHelper.LogType.Error);
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 克隆墨迹集合
|
||
/// </summary>
|
||
/// <param name="strokes">要克隆的墨迹集合</param>
|
||
/// <returns>克隆后的墨迹集合</returns>
|
||
private StrokeCollection CloneStrokes(StrokeCollection strokes)
|
||
{
|
||
if (strokes == null || strokes.Count == 0) return new StrokeCollection();
|
||
|
||
try
|
||
{
|
||
// 创建墨迹集合的副本
|
||
var clonedStrokes = strokes.Clone();
|
||
|
||
// 为每个墨迹添加位置偏移以避免重叠
|
||
foreach (var stroke in clonedStrokes)
|
||
{
|
||
var offsetPoints = new StylusPointCollection();
|
||
foreach (var point in stroke.StylusPoints)
|
||
{
|
||
offsetPoints.Add(new StylusPoint(point.X + 20, point.Y + 20, point.PressureFactor));
|
||
}
|
||
stroke.StylusPoints = offsetPoints;
|
||
}
|
||
|
||
// 添加到画布
|
||
inkCanvas.Strokes.Add(clonedStrokes);
|
||
|
||
// 提交到时间机器以支持撤销
|
||
timeMachine.CommitStrokeUserInputHistory(clonedStrokes);
|
||
|
||
LogHelper.WriteLogToFile($"墨迹克隆完成: {clonedStrokes.Count} 个墨迹");
|
||
return clonedStrokes;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
LogHelper.WriteLogToFile($"克隆墨迹时发生错误: {ex.Message}", LogHelper.LogType.Error);
|
||
return new StrokeCollection();
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 克隆墨迹集合到新页面
|
||
/// </summary>
|
||
/// <param name="strokes">要克隆的墨迹集合</param>
|
||
private void CloneStrokesToNewBoard(StrokeCollection strokes)
|
||
{
|
||
if (strokes == null || strokes.Count == 0) return;
|
||
|
||
try
|
||
{
|
||
// 创建墨迹集合的副本
|
||
var clonedStrokes = strokes.Clone();
|
||
|
||
// 为每个墨迹添加位置偏移以避免重叠
|
||
foreach (var stroke in clonedStrokes)
|
||
{
|
||
var offsetPoints = new StylusPointCollection();
|
||
foreach (var point in stroke.StylusPoints)
|
||
{
|
||
offsetPoints.Add(new StylusPoint(point.X + 20, point.Y + 20, point.PressureFactor));
|
||
}
|
||
stroke.StylusPoints = offsetPoints;
|
||
}
|
||
|
||
// 创建新页面
|
||
BtnWhiteBoardAdd_Click(null, null);
|
||
|
||
// 添加到新页面的画布
|
||
inkCanvas.Strokes.Add(clonedStrokes);
|
||
|
||
// 提交到时间机器以支持撤销
|
||
timeMachine.CommitStrokeUserInputHistory(clonedStrokes);
|
||
|
||
LogHelper.WriteLogToFile($"墨迹克隆到新页面完成: {clonedStrokes.Count} 个墨迹");
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
// 记录错误但不中断程序
|
||
LogHelper.WriteLogToFile($"克隆墨迹到新页面时发生错误: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Image Resize Handles
|
||
|
||
// 图片缩放选择点相关变量
|
||
private bool isResizingImage = false;
|
||
private Point imageResizeStartPoint;
|
||
private string activeResizeHandle = "";
|
||
|
||
// 显示图片缩放选择点
|
||
private void ShowImageResizeHandles(FrameworkElement element)
|
||
{
|
||
try
|
||
{
|
||
if (ImageResizeHandlesCanvas == null || element == null) return;
|
||
|
||
// 获取元素的实际边界
|
||
Rect elementBounds = GetElementActualBounds(element);
|
||
|
||
// 设置选择点位置
|
||
UpdateImageResizeHandlesPosition(elementBounds);
|
||
|
||
// 显示选择点
|
||
ImageResizeHandlesCanvas.Visibility = Visibility.Visible;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"显示图片缩放选择点失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 隐藏图片缩放选择点
|
||
private void HideImageResizeHandles()
|
||
{
|
||
try
|
||
{
|
||
if (ImageResizeHandlesCanvas != null)
|
||
{
|
||
ImageResizeHandlesCanvas.Visibility = Visibility.Collapsed;
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"隐藏图片缩放选择点失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 更新图片缩放选择点位置
|
||
private void UpdateImageResizeHandlesPosition(Rect elementBounds)
|
||
{
|
||
try
|
||
{
|
||
if (ImageResizeHandlesCanvas == null) return;
|
||
|
||
ImageResizeHandlesCanvas.Margin = new Thickness(elementBounds.Left, elementBounds.Top, 0, 0);
|
||
|
||
// 四个角控制点
|
||
System.Windows.Controls.Canvas.SetLeft(ImageTopLeftHandle, -4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageTopLeftHandle, -4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageTopRightHandle, elementBounds.Width - 4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageTopRightHandle, -4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageBottomLeftHandle, -4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageBottomLeftHandle, elementBounds.Height - 4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageBottomRightHandle, elementBounds.Width - 4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageBottomRightHandle, elementBounds.Height - 4);
|
||
|
||
// 四个边控制点
|
||
System.Windows.Controls.Canvas.SetLeft(ImageTopHandle, elementBounds.Width / 2 - 4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageTopHandle, -4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageBottomHandle, elementBounds.Width / 2 - 4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageBottomHandle, elementBounds.Height - 4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageLeftHandle, -4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageLeftHandle, elementBounds.Height / 2 - 4);
|
||
|
||
System.Windows.Controls.Canvas.SetLeft(ImageRightHandle, elementBounds.Width - 4);
|
||
System.Windows.Controls.Canvas.SetTop(ImageRightHandle, elementBounds.Height / 2 - 4);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"更新图片缩放选择点位置失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 图片缩放选择点鼠标按下事件
|
||
private void ImageResizeHandle_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (IsBitmapLikeCanvasElement(currentSelectedElement) && sender is Ellipse ellipse)
|
||
{
|
||
isResizingImage = true;
|
||
imageResizeStartPoint = e.GetPosition(inkCanvas);
|
||
|
||
// 确定是哪个控制点
|
||
activeResizeHandle = ellipse.Name;
|
||
|
||
// 捕获鼠标
|
||
ellipse.CaptureMouse();
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片缩放选择点鼠标按下事件失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 图片缩放选择点鼠标释放事件
|
||
private void ImageResizeHandle_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (isResizingImage && sender is Ellipse ellipse)
|
||
{
|
||
isResizingImage = false;
|
||
ellipse.ReleaseMouseCapture();
|
||
activeResizeHandle = "";
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片缩放选择点鼠标释放事件失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 图片缩放选择点鼠标移动事件
|
||
private void ImageResizeHandle_MouseMove(object sender, MouseEventArgs e)
|
||
{
|
||
try
|
||
{
|
||
if (isResizingImage && IsBitmapLikeCanvasElement(currentSelectedElement) && sender is Ellipse ellipse)
|
||
{
|
||
var currentPoint = e.GetPosition(inkCanvas);
|
||
ResizeImageByHandle(currentSelectedElement, imageResizeStartPoint, currentPoint, activeResizeHandle);
|
||
imageResizeStartPoint = currentPoint;
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"图片缩放选择点鼠标移动事件失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
// 根据控制点缩放图片
|
||
private void ResizeImageByHandle(FrameworkElement element, Point startPoint, Point currentPoint, string handleName)
|
||
{
|
||
try
|
||
{
|
||
if (element.RenderTransform is TransformGroup transformGroup)
|
||
{
|
||
var scaleTransform = transformGroup.Children.OfType<ScaleTransform>().FirstOrDefault();
|
||
var translateTransform = transformGroup.Children.OfType<TranslateTransform>().FirstOrDefault();
|
||
|
||
if (scaleTransform == null || translateTransform == null) return;
|
||
|
||
// 获取图片的当前边界
|
||
Rect currentBounds = GetElementActualBounds(element);
|
||
double deltaX = currentPoint.X - startPoint.X;
|
||
double deltaY = currentPoint.Y - startPoint.Y;
|
||
|
||
// 计算缩放比例
|
||
double scaleX = 1.0;
|
||
double scaleY = 1.0;
|
||
double translateX = 0;
|
||
double translateY = 0;
|
||
|
||
switch (handleName)
|
||
{
|
||
case "ImageTopLeftHandle":
|
||
scaleX = (currentBounds.Width - deltaX) / currentBounds.Width;
|
||
scaleY = (currentBounds.Height - deltaY) / currentBounds.Height;
|
||
translateX = deltaX;
|
||
translateY = deltaY;
|
||
break;
|
||
case "ImageTopRightHandle":
|
||
scaleX = (currentBounds.Width + deltaX) / currentBounds.Width;
|
||
scaleY = (currentBounds.Height - deltaY) / currentBounds.Height;
|
||
translateY = deltaY;
|
||
break;
|
||
case "ImageBottomLeftHandle":
|
||
scaleX = (currentBounds.Width - deltaX) / currentBounds.Width;
|
||
scaleY = (currentBounds.Height + deltaY) / currentBounds.Height;
|
||
translateX = deltaX;
|
||
break;
|
||
case "ImageBottomRightHandle":
|
||
scaleX = (currentBounds.Width + deltaX) / currentBounds.Width;
|
||
scaleY = (currentBounds.Height + deltaY) / currentBounds.Height;
|
||
break;
|
||
case "ImageTopHandle":
|
||
scaleY = (currentBounds.Height - deltaY) / currentBounds.Height;
|
||
translateY = deltaY;
|
||
break;
|
||
case "ImageBottomHandle":
|
||
scaleY = (currentBounds.Height + deltaY) / currentBounds.Height;
|
||
break;
|
||
case "ImageLeftHandle":
|
||
scaleX = (currentBounds.Width - deltaX) / currentBounds.Width;
|
||
translateX = deltaX;
|
||
break;
|
||
case "ImageRightHandle":
|
||
scaleX = (currentBounds.Width + deltaX) / currentBounds.Width;
|
||
break;
|
||
}
|
||
|
||
// 限制缩放范围
|
||
scaleX = Math.Max(0.1, Math.Min(scaleX, 5.0));
|
||
scaleY = Math.Max(0.1, Math.Min(scaleY, 5.0));
|
||
|
||
// 应用缩放
|
||
scaleTransform.ScaleX *= scaleX;
|
||
scaleTransform.ScaleY *= scaleY;
|
||
|
||
// 应用平移
|
||
translateTransform.X += translateX;
|
||
translateTransform.Y += translateY;
|
||
|
||
// 更新选择点位置
|
||
UpdateImageResizeHandlesPosition(GetElementActualBounds(element));
|
||
|
||
if (BorderImageSelectionControl?.Visibility == Visibility.Visible)
|
||
UpdateImageSelectionToolbarPosition(element);
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"根据控制点缩放图片失败: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
}
|
||
}
|