void OnPointerReleased(object sender, PointerRoutedEventArgs e)
{
if (e.IsTouch())
{
// 触摸模式只支持列排序
if (_pointerID == e.Pointer.PointerId)
{
ReleasePointerCapture(e.Pointer);
_pointerID = null;
ChangedSortState();
}
return;
}
if (_isDragging)
{
if (_dragTgtCol != null)
{
// 拖拽结束
_owner.FinishedDrag();
Cols cols = _owner.Lv.Cols;
int index = cols.IndexOf(_dragTgtCol);
cols.Remove(Col);
cols.Insert(index, Col);
cols.Invalidate();
}
else
{
// 列排序
ChangedSortState();
}
}
ResetMouseState();
}
void OnPointerMoved(object sender, PointerRoutedEventArgs e)
{
// 触摸模式滚动
if (e.IsTouch() && _pointerID == e.Pointer.PointerId)
{
Point cur = e.GetCurrentPoint(null).Position;
_owner.DoHorScroll(cur.X - _ptLast.X);
_ptLast = cur;
_isMoved = true;
}
}
void OnPointerMoved(object sender, PointerRoutedEventArgs e)
{
e.Handled = true;
if (e.IsTouch())
{
// 触摸模式只支持列排序
if (_pointerID == e.Pointer.PointerId)
{
ReleasePointerCapture(e.Pointer);
_pointerID = null;
}
return;
}
// 鼠标未按下时的滑过
if (!_isDragging && _resizingCol == null)
{
Point pt = e.GetCurrentPoint(this).Position;
if (pt.X >= _resizePadding && Col.Width - pt.X >= _resizePadding)
{
SetCursor(CoreCursorType.Arrow);
VisualStateManager.GoToState(this, "PointerOver", true);
}
else
{
SetCursor(CoreCursorType.SizeWestEast);
VisualStateManager.GoToState(this, "Normal", true);
}
return;
}
// 调整列宽
if (_resizingCol != null)
{
Point cur = e.GetCurrentPoint(null).Position;
double width = _resizingCol.Width + cur.X - _ptLast.X;
if (width > 35)
{
// 最小宽度能显示一个字
_resizingCol.Width = width;
_owner.Lv.Cols.Invalidate();
_ptLast = cur;
}
return;
}
// 拖拽列
_dragTgtCol = _owner.GetDragTargetCol(Col, e.GetCurrentPoint(_owner).Position.X);
}
void OnPointerPressed(object sender, PointerRoutedEventArgs e)
{
if (!CapturePointer(e.Pointer))
{
return;
}
e.Handled = true;
if (e.IsTouch())
{
// 触摸模式只支持列排序
_pointerID = e.Pointer.PointerId;
return;
}
// 鼠标模式
Point pt = e.GetCurrentPoint(this).Position;
if (pt.X < _resizePadding)
{
// 左侧调列宽
_resizingCol = GetLeftCol();
if (_resizingCol == null)
{
_isDragging = true;
SetCursor(CoreCursorType.Arrow);
VisualStateManager.GoToState(this, "Pressed", true);
}
else
{
_ptLast = e.GetCurrentPoint(null).Position;
VisualStateManager.GoToState(this, "Normal", true);
}
}
else if (pt.X > Col.Width - _resizePadding)
{
// 右侧调列宽
_resizingCol = Col;
_ptLast = e.GetCurrentPoint(null).Position;
VisualStateManager.GoToState(this, "Normal", true);
}
else
{
// 开始拖拽
_isDragging = true;
VisualStateManager.GoToState(this, "Pressed", true);
}
}
protected override void OnPointerEntered(PointerRoutedEventArgs e)
{
// 触摸时不自动打开下级菜单
if (Owner == null || Kit.IsPhoneUI || e.IsTouch())
{
return;
}
IsMouseOver = true;
ChangeState(MenuItemState.PointerOver);
// 一级菜单且已有选择项
if (ParentMi == null)
{
if ((Owner.SelectedMi != null && Owner.SelectedMi != this) ||
Owner.IsContextMenu)
{
IsSelected = true;
if (Items.Count > 0)
{
OpenSubMenu();
}
}
return;
}
// 子菜单
if (IsSubmenuOpen)
{
IsSelected = true;
}
else if (Items.Count > 0)
{
if (ParentMi.SelectedMi == null)
{
IsSelected = true;
}
OpenSubMenu();
}
else
{
IsSelected = true;
}
}
void OnPointerMoved(object sender, PointerRoutedEventArgs e)
{
if (_pointerID != e.Pointer.PointerId)
{
return;
}
// 允许有短距离移动
e.Handled = true;
Point cur = e.GetCurrentPoint(null).Position;
if (Math.Abs(cur.X - _ptLast.X) > 4 || Math.Abs(cur.Y - _ptLast.Y) > 4)
{
ReleasePointerCapture(e.Pointer);
_pointerID = null;
if (e.IsTouch())
{
_rcPointer.Fill = null;
}
}
}
protected override void OnPointerExited(PointerRoutedEventArgs e)
{
if (e.IsTouch())
{
ChangeState(MenuItemState.Normal);
return;
}
IsMouseOver = false;
bool unselect = ((ParentMi == null && Items.Count > 0 && !IsSubmenuOpen) ||
(ParentMi != null && (Items.Count == 0 || !IsSubmenuOpen)));
if (unselect && IsSelected)
{
IsSelected = false;
}
else
{
ChangeState(MenuItemState.Normal);
}
}
