新增图片选择选项
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@@ -3,6 +3,7 @@ using System.IO;
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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.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using Ink_Canvas.Helpers;
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@@ -219,6 +220,152 @@ namespace Ink_Canvas
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}
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}
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/// <summary>
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/// 克隆图片
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/// </summary>
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/// <param name="image">要克隆的图片</param>
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private void CloneImage(Image image)
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{
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if (image == null) return;
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try
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{
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// 创建图片的副本
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var clonedImage = new Image
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{
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Source = image.Source,
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Width = image.Width,
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Height = image.Height,
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Stretch = image.Stretch,
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RenderTransform = image.RenderTransform?.Clone() as Transform
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};
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// 设置位置，稍微偏移以避免重叠
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InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
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InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
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// 添加鼠标事件处理，使图片可以被选择
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clonedImage.MouseDown += UIElement_MouseDown;
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clonedImage.IsManipulationEnabled = true;
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// 添加到画布
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inkCanvas.Children.Add(clonedImage);
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// 选择新克隆的图片
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DeselectUIElement();
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SelectUIElement(clonedImage);
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// 提交到时间机器以支持撤销
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timeMachine.CommitElementInsertHistory(clonedImage);
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"克隆图片时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 克隆图片到新页面
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/// </summary>
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/// <param name="image">要克隆的图片</param>
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private void CloneImageToNewBoard(Image image)
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{
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if (image == null) return;
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try
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{
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// 创建图片的副本
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var clonedImage = new Image
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{
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Source = image.Source,
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Width = image.Width,
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Height = image.Height,
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Stretch = image.Stretch,
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RenderTransform = image.RenderTransform?.Clone() as Transform
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};
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// 设置位置，稍微偏移以避免重叠
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InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
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InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
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// 添加鼠标事件处理，使图片可以被选择
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clonedImage.MouseDown += UIElement_MouseDown;
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clonedImage.IsManipulationEnabled = true;
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// 创建新页面
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BtnWhiteBoardAdd_Click(null, null);
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// 添加到新页面的画布
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inkCanvas.Children.Add(clonedImage);
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// 选择新克隆的图片
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DeselectUIElement();
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SelectUIElement(clonedImage);
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// 提交到时间机器以支持撤销
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timeMachine.CommitElementInsertHistory(clonedImage);
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"克隆图片到新页面时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 缩放图片
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/// </summary>
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/// <param name="image">要缩放的图片</param>
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/// <param name="scaleFactor">缩放因子（大于1为放大，小于1为缩小）</param>
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private void ScaleImage(Image image, double scaleFactor)
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{
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if (image == null) return;
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try
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{
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// 获取当前的变换
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var transformGroup = image.RenderTransform as TransformGroup ?? new TransformGroup();
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// 查找现有的缩放变换
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ScaleTransform scaleTransform = null;
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foreach (Transform transform in transformGroup.Children)
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{
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if (transform is ScaleTransform st)
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{
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scaleTransform = st;
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break;
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}
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}
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// 如果没有缩放变换，创建一个新的
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if (scaleTransform == null)
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{
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scaleTransform = new ScaleTransform();
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transformGroup.Children.Add(scaleTransform);
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}
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// 设置缩放中心为图片中心
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scaleTransform.CenterX = image.ActualWidth / 2;
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scaleTransform.CenterY = image.ActualHeight / 2;
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// 应用缩放因子
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scaleTransform.ScaleX *= scaleFactor;
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scaleTransform.ScaleY *= scaleFactor;
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// 应用变换
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image.RenderTransform = transformGroup;
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// 提交到时间机器以支持撤销
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// 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
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"缩放图片时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 删除图片
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/// </summary>
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@@ -166,6 +166,7 @@ namespace Ink_Canvas {
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}
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}
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// ... existing code ...
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private void ImageRotate45_MouseUp(object sender, MouseButtonEventArgs e) {
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if (lastBorderMouseDownObject != sender) return;
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@@ -179,7 +180,7 @@ namespace Ink_Canvas {
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center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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// Update matrix to reflect translation/rotation
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m.RotateAt(45, center.X, center.Y); // 旋转
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m.RotateAt(45, center.X, center.Y); // 顺时针旋转45度
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var targetStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in targetStrokes) stroke.Transform(m, false);
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@@ -471,7 +472,7 @@ namespace Ink_Canvas {
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// 图片工具栏相关
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private Border borderImageSelectionControl;
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private double BorderImageSelectionControlWidth = 150.0; // 3个按钮 + 分隔线的实际宽度
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private double BorderImageSelectionControlWidth = 490.0; // 6个按钮 + 分隔线的实际宽度
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private double BorderImageSelectionControlHeight = 80.0;
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// 元素变化监听相关
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