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fix:白板页面预览无法使用触摸

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CJKmkp
2025-07-21 10:14:21 +08:00
parent 44e331ae96
commit 93bef2e144
4 changed files with 58 additions and 6 deletions
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Ink Canvas/MainWindow.xaml.cs
+48
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@@ -145,6 +145,54 @@ namespace Ink_Canvas {
InkCanvasGridForInkReplay.Children.Add(firstCanvas);
currentPageIndex = 0;
ShowPage(currentPageIndex);
// 手动实现触摸滑动
double leftTouchStartY = 0;
double leftScrollStartOffset = 0;
bool leftIsTouching = false;
BlackBoardLeftSidePageListScrollViewer.TouchDown += (s, e) => {
leftIsTouching = true;
leftTouchStartY = e.GetTouchPoint(BlackBoardLeftSidePageListScrollViewer).Position.Y;
leftScrollStartOffset = BlackBoardLeftSidePageListScrollViewer.VerticalOffset;
BlackBoardLeftSidePageListScrollViewer.CaptureTouch(e.TouchDevice);
e.Handled = true;
};
BlackBoardLeftSidePageListScrollViewer.TouchMove += (s, e) => {
if (leftIsTouching) {
double currentY = e.GetTouchPoint(BlackBoardLeftSidePageListScrollViewer).Position.Y;
double delta = leftTouchStartY - currentY;
BlackBoardLeftSidePageListScrollViewer.ScrollToVerticalOffset(leftScrollStartOffset + delta);
e.Handled = true;
}
};
BlackBoardLeftSidePageListScrollViewer.TouchUp += (s, e) => {
leftIsTouching = false;
BlackBoardLeftSidePageListScrollViewer.ReleaseTouchCapture(e.TouchDevice);
e.Handled = true;
};
double rightTouchStartY = 0;
double rightScrollStartOffset = 0;
bool rightIsTouching = false;
BlackBoardRightSidePageListScrollViewer.TouchDown += (s, e) => {
rightIsTouching = true;
rightTouchStartY = e.GetTouchPoint(BlackBoardRightSidePageListScrollViewer).Position.Y;
rightScrollStartOffset = BlackBoardRightSidePageListScrollViewer.VerticalOffset;
BlackBoardRightSidePageListScrollViewer.CaptureTouch(e.TouchDevice);
e.Handled = true;
};
BlackBoardRightSidePageListScrollViewer.TouchMove += (s, e) => {
if (rightIsTouching) {
double currentY = e.GetTouchPoint(BlackBoardRightSidePageListScrollViewer).Position.Y;
double delta = rightTouchStartY - currentY;
BlackBoardRightSidePageListScrollViewer.ScrollToVerticalOffset(rightScrollStartOffset + delta);
e.Handled = true;
}
};
BlackBoardRightSidePageListScrollViewer.TouchUp += (s, e) => {
rightIsTouching = false;
BlackBoardRightSidePageListScrollViewer.ReleaseTouchCapture(e.TouchDevice);
e.Handled = true;
};
}
protected override void OnSourceInitialized(EventArgs e)