diff --git a/Ink Canvas/MainWindow_cs/MW_Eraser.cs b/Ink Canvas/MainWindow_cs/MW_Eraser.cs
index ba4a773b..eb665cb8 100644
--- a/Ink Canvas/MainWindow_cs/MW_Eraser.cs
+++ b/Ink Canvas/MainWindow_cs/MW_Eraser.cs
@@ -8,6 +8,7 @@ using System.Windows.Input;
using System.Windows.Media;
using Ink_Canvas.Helpers;
using System.Windows.Shapes;
+using System.Windows.Media.Imaging;
namespace Ink_Canvas {
public partial class MainWindow : Window {
@@ -333,13 +334,13 @@ namespace Ink_Canvas {
// 获取或创建橡皮擦视觉反馈Border
if (eraserVisualBorder == null) {
eraserVisualBorder = new Border {
- Background = new SolidColorBrush(Colors.White),
+ Background = new SolidColorBrush(Colors.Transparent),
BorderBrush = new SolidColorBrush(Colors.Transparent),
BorderThickness = new Thickness(0),
IsHitTestVisible = false,
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
- Opacity = 0.8
+ Opacity = 1
};
Panel.SetZIndex(eraserVisualBorder, 1001);
@@ -355,12 +356,17 @@ namespace Ink_Canvas {
}
if (eraserVisualBorder != null) {
+ // 创建橡皮擦视觉反馈
+ var eraserImage = CreateEraserVisualImage();
+
+ // 清除Border的内容并添加新的图像
+ eraserVisualBorder.Child = eraserImage;
+
// 更新橡皮擦位置和大小
if (isCurrentEraserCircle) {
var radius = currentEraserSize / 2;
eraserVisualBorder.Width = currentEraserSize;
eraserVisualBorder.Height = currentEraserSize;
- eraserVisualBorder.CornerRadius = new CornerRadius(radius);
// 使用Margin来定位，因为Border在Grid中
eraserVisualBorder.Margin = new Thickness(
@@ -372,7 +378,6 @@ namespace Ink_Canvas {
var height = currentEraserSize / 0.6;
eraserVisualBorder.Width = currentEraserSize;
eraserVisualBorder.Height = height;
- eraserVisualBorder.CornerRadius = new CornerRadius(0);
// 使用Margin来定位，因为Border在Grid中
eraserVisualBorder.Margin = new Thickness(
@@ -389,6 +394,103 @@ namespace Ink_Canvas {
}
}
+ ///
+ /// 创建橡皮擦视觉图像
+ ///
+ private Image CreateEraserVisualImage() {
+ try {
+ // 根据橡皮擦形状选择对应的DrawingGroup资源
+ string resourceKey = isCurrentEraserCircle ? "EraserCircleDrawingGroup" : "EraserDrawingGroup";
+
+ // 尝试从资源字典中获取DrawingGroup
+ var drawingGroup = this.TryFindResource(resourceKey) as DrawingGroup;
+ if (drawingGroup == null) {
+ // 如果找不到资源，创建默认的橡皮擦图像
+ return CreateDefaultEraserImage();
+ }
+
+ // 创建变换后的DrawingGroup
+ var transformedGroup = new DrawingGroup();
+ transformedGroup.Children.Add(drawingGroup);
+
+ // 应用缩放变换
+ var transform = new ScaleTransform();
+ if (isCurrentEraserCircle) {
+ var scale = currentEraserSize / 56.0; // 基于56x56的基准尺寸
+ transform.ScaleX = scale;
+ transform.ScaleY = scale;
+ } else {
+ var scaleX = currentEraserSize / 38.0;
+ var scaleY = (currentEraserSize / 0.6) / 56.0;
+ transform.ScaleX = scaleX;
+ transform.ScaleY = scaleY;
+ }
+ transformedGroup.Transform = transform;
+
+ // 创建DrawingImage
+ var drawingImage = new DrawingImage(transformedGroup);
+
+ // 创建Image控件
+ var image = new Image {
+ Source = drawingImage,
+ Stretch = Stretch.None
+ };
+ RenderOptions.SetBitmapScalingMode(image, BitmapScalingMode.HighQuality);
+
+ return image;
+ } catch (Exception ex) {
+ Trace.WriteLine($"Advanced Eraser: Error creating eraser visual image - {ex.Message}");
+ return CreateDefaultEraserImage();
+ }
+ }
+
+ ///
+ /// 创建默认的橡皮擦图像（当资源不可用时）
+ ///
+ private Image CreateDefaultEraserImage() {
+ try {
+ // 创建一个简单的几何图形作为默认橡皮擦
+ Geometry geometry;
+ if (isCurrentEraserCircle) {
+ geometry = new EllipseGeometry(new Point(28, 28), 28, 28);
+ } else {
+ geometry = new RectangleGeometry(new Rect(0, 0, 38, 56));
+ }
+
+ var brush = new SolidColorBrush(Colors.LightGray);
+ var pen = new Pen(new SolidColorBrush(Colors.DarkGray), 1);
+
+ var geometryDrawing = new GeometryDrawing(brush, pen, geometry);
+ var drawingGroup = new DrawingGroup();
+ drawingGroup.Children.Add(geometryDrawing);
+
+ // 应用缩放变换
+ var transform = new ScaleTransform();
+ if (isCurrentEraserCircle) {
+ var scale = currentEraserSize / 56.0;
+ transform.ScaleX = scale;
+ transform.ScaleY = scale;
+ } else {
+ var scaleX = currentEraserSize / 38.0;
+ var scaleY = (currentEraserSize / 0.6) / 56.0;
+ transform.ScaleX = scaleX;
+ transform.ScaleY = scaleY;
+ }
+ drawingGroup.Transform = transform;
+
+ var drawingImage = new DrawingImage(drawingGroup);
+ var image = new Image {
+ Source = drawingImage,
+ Stretch = Stretch.None
+ };
+
+ return image;
+ } catch (Exception ex) {
+ Trace.WriteLine($"Advanced Eraser: Error creating default eraser image - {ex.Message}");
+ return null;
+ }
+ }
+
///
/// 兼容性方法：旧版橡皮擦几何碰撞处理
///
diff --git a/Ink Canvas/MainWindow_cs/MW_Eraser.xaml b/Ink Canvas/MainWindow_cs/MW_Eraser.xaml
index efac902e..f6cdf56e 100644
--- a/Ink Canvas/MainWindow_cs/MW_Eraser.xaml
+++ b/Ink Canvas/MainWindow_cs/MW_Eraser.xaml
@@ -1,140 +1,36 @@
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\ No newline at end of file