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fix(MW_SelectionGestures.cs): 调整选择框和手柄的扩展偏移量 (#373)

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Signed-off-by: doudou0720 <98651603+doudou0720@users.noreply.github.com>
This commit is contained in:
doudou0720
2026-02-15 08:07:35 +08:00
committed by GitHub
parent 7d78f677b8
commit 8c65075823
1 changed files with 17 additions and 14 deletions
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Ink Canvas/MainWindow_cs/MW_SelectionGestures.cs
+17 -14
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@@ -743,11 +743,14 @@ namespace Ink_Canvas
var selectionBounds = inkCanvas.GetSelectionBounds(); var selectionBounds = inkCanvas.GetSelectionBounds();
// 更新选择框 // 向外扩展8像素
double expandOffset = 8;
// 更新选择框，向外扩展8像素
SelectionRectangle.Visibility = Visibility.Visible; SelectionRectangle.Visibility = Visibility.Visible;
SelectionRectangle.Margin = new Thickness(selectionBounds.Left, selectionBounds.Top, 0, 0); SelectionRectangle.Margin = new Thickness(selectionBounds.Left - expandOffset, selectionBounds.Top - expandOffset, 0, 0);
SelectionRectangle.Width = selectionBounds.Width; SelectionRectangle.Width = selectionBounds.Width + expandOffset * 2;
SelectionRectangle.Height = selectionBounds.Height; SelectionRectangle.Height = selectionBounds.Height + expandOffset * 2;
// 更新选择点位置 // 更新选择点位置
UpdateSelectionHandles(selectionBounds); UpdateSelectionHandles(selectionBounds);
@@ -762,17 +765,17 @@ namespace Ink_Canvas
private void UpdateSelectionHandles(Rect bounds) private void UpdateSelectionHandles(Rect bounds)
{ {
// 四个角选择点 // 四个边选择点，向外扩展8像素
TopLeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Top - 4, 0, 0); TopHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Top - 12, 0, 0);
TopRightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Top - 4, 0, 0); BottomHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Bottom + 4 , 0, 0);
BottomLeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Bottom - 4, 0, 0); LeftHandle.Margin = new Thickness(bounds.Left - 12 , bounds.Top + bounds.Height / 2 - 4, 0, 0);
BottomRightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Bottom - 4, 0, 0); RightHandle.Margin = new Thickness(bounds.Right + 4, bounds.Top + bounds.Height / 2 - 4, 0, 0);
// 四个边选择点 // 四个角选择点，完全位于选择框外部
TopHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Top - 4, 0, 0); TopLeftHandle.Margin = new Thickness(bounds.Left - 12, bounds.Top - 12, 0, 0);
BottomHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Bottom - 4, 0, 0); TopRightHandle.Margin = new Thickness(bounds.Right + 4, bounds.Top - 12, 0, 0);
LeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Top + bounds.Height / 2 - 4, 0, 0); BottomLeftHandle.Margin = new Thickness(bounds.Left - 12, bounds.Bottom + 4, 0, 0);
RightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Top + bounds.Height / 2 - 4, 0, 0); BottomRightHandle.Margin = new Thickness(bounds.Right + 4, bounds.Bottom + 4, 0, 0);
} }
private void SelectionHandle_MouseDown(object sender, MouseButtonEventArgs e) private void SelectionHandle_MouseDown(object sender, MouseButtonEventArgs e)