private void RemoveControl()
{
LayerContainer.Focus();
LayerContainer.PreventMouseEvent(null);
if (Popup)
{
_control.SaftyInvoke <Popup>(p => p.IsOpen = false);
}
else
{
if (_control == null)
{
return;
}
var panel = this.FindAncestor <Panel>();
if (panel == null || !panel.Children.Contains(_control))
{
return;
}
panel.Children.Remove(_control);
_control = null;
}
this.FindAncestor <Panel>().ReleaseMouseCapture();
}
protected override void OnParentMouseUp(object sender, MouseButtonEventArgs e)
{
//当Popup点中ListBox选项代表结束编辑,保存
if (Popup && !EditControlIsClosed() && e.Source == _control.SaftyGetProperty <UIElement, Popup>(o => o.Child, () => _control))
{
e.Handled = TryEndEdit(Key.Enter); //为了不让其选中其他Cell必须在此跳出
return;
}
if (!Popup && _control != null && _editCell != InitalDrawLocation)
{
//int32EditBox进入编辑状态, 鼠标点其他Cell , 必须执行修改动作
TryEndEdit(Key.Enter);
}
base.OnParentMouseUp(sender, e);
if (Popup && _editCell != InitalDrawLocation && _editCell != null)
{
//因为双击事件会导致重新进入OnParentMouseUp, 所以需要识别InitalDrawLocation是不是点中一样的Cell, 如果点到其他Cell, 必须将Popup关闭
RemoveControl();
_editCell = null;
}
if (_editCell != InitalDrawLocation && EditControlIsClosed()) // 为了让键盘事件能够捕捉,必须LayerContainer设为焦点
{
LayerContainer.Focus();
}
}
protected override void OnParentMouseMove(object sender, MouseEventArgs e)
{
if (_canMove && e.LeftButton == MouseButtonState.Pressed && PointOutBlock != null) //Henry modified: e.LeftButton == MouseButtonState.Pressed
{
MouseMoving(e.GetPosition(this));
InvalidateVisual();
e.Handled = true;
LayerContainer.Focus();
}
}
private bool AutoScroll()
{
var position = Mouse.GetPosition(this);
var scrolled = true;
var hOffsetValue = AxisPanel.HorizontalOffSetValue;
var hOffset = HorizontalOffset;
var vOffsetValue = AxisPanel.VerticalOffSetValue;
var vOffset = VerticalOffset;
const double threshold = 3;
if (position.X < threshold)
{
hOffset = hOffset - (hOffset / hOffsetValue);
AxisPanel.SetHorizontalOffset(hOffset);
}
else if ((RenderSize.Width - threshold) < position.X)
{
hOffset += hOffsetValue;
AxisPanel.SetHorizontalOffset(hOffset);
}
else if (position.Y < threshold)
{
vOffset = vOffset - (vOffset / vOffsetValue);
AxisPanel.SetVerticalOffset(vOffset);
}
else if ((RenderSize.Height - threshold) < position.Y)
{
vOffset += vOffsetValue;
AxisPanel.SetVerticalOffset(vOffset);
}
else
{
scrolled = false;
}
if (scrolled)
{
LayerContainer.Focus();
Mouse.Capture(LayerContainer);
}
return(scrolled);
}
protected override void OnParentKeyDown(object sender, KeyEventArgs e)
{
if (Keyboard.Modifiers == ModifierKeys.Shift)
{
return;
}
if (InitalDrawLocation == null)
{
return;
}
_screenDataRowIndex = AxisPanel.GetScreenTopRowIndex();
var prevRowIndex = AxisYConverter.ToData(InitalDrawLocation.Value.Y);
switch (e.Key)
{
case Key.Left:
MoveLeft(InitalDrawLocation.Value);
MeasureDragingArea(_screenDataRowIndex);
e.Handled = 0 <= ConvertToRelativePosition(_startPoint).X;
break;
case Key.Right:
if (TryMoveRight(InitalDrawLocation.Value))
{
MeasureDragingArea(_screenDataRowIndex);
}
e.Handled = ConvertToRelativePosition(_currentPoint).X <= RenderSize.Width;
break;
case Key.Up:
TryMoveUp(InitalDrawLocation.Value);
var moveUpRowIndex = AxisYConverter.ToData(_startPoint.Y);
e.Handled = moveUpRowIndex != prevRowIndex;
if (!e.Handled)
{
_screenDataRowIndex -= _screenDataRowIndex > 0 ? 1 : 0; // scroll up occurred
}
MeasureDragingArea(_screenDataRowIndex);
break;
case Key.Down:
TryMoveDown(InitalDrawLocation.Value);
var moveDownRowIndex = AxisYConverter.ToData(_startPoint.Y);
if ((RenderSize.Height - AxisYConverter.DataToScreen(moveDownRowIndex)) < Interval) // 屏幕最后一格未满
{
e.Handled = false;
}
else
{
e.Handled = moveDownRowIndex != prevRowIndex;
}
MeasureDragingArea(_screenDataRowIndex);
if (!e.Handled)
{
_screenDataRowIndex += GetItemsSourceCount() - 1 <= moveDownRowIndex ? 0 : 1; // scroll down occurred
}
break;
default:
ClickCount = 0;
break;
}
SetInitalDrawLocation();
if (e.Handled)
{
InvalidateVisual(); //未发生scroll bar 卷动, 手动刷新 cell 新的位置
}
else
{
LayerContainer.Focus();
}
// e.Handled 如果为 false 代表由 scroll bar 滚动来引发重绘
}
