public bool TryMoveUp(Rect rect)
{
if (_screenDataRowIndex < AxisYConverter.ToData(_startPoint.Y)) // 不在位置 0 (第一笔)
{
_startPoint = new Point(rect.X, rect.Y <= 0 ? 0 : rect.Y - rect.Height);
_currentPoint = new Point(rect.X + rect.Width, _startPoint.Y);
return(true);
}
return(false);
}
internal bool DataRowIndexIsOutOfScreen(int dataRowIndex, out double viewportTop)
{
var y0 = AxisPanel.GetScreenTopRowIndex();
var yMax = AxisYConverter.ScreenToData(AxisPanel.ViewportHeight); // renderSize.Height ? 高度尚未经完整测试
int dataRowScreenIndex;
var outOfRange = (AxisControlExt.AxisOutOfRange(dataRowIndex, y0, yMax, out dataRowScreenIndex));
viewportTop = dataRowScreenIndex * Interval;
return(outOfRange);
}
internal bool IsInViewRange(out Point point)
{
if (InitalDrawLocation == null)
{
point = new Point(0, 0);
return(true);
}
point = new Point(InitalDrawLocation.Value.X - HorizontalOffset,
InitalDrawLocation.Value.Y - VerticalOffset); // 转换成相对位置
return(AxisXConverter.IsInViewRagne(point.X) && AxisYConverter.IsInViewRagne(point.Y));
}
internal override double GetPointOutY()
{
if (!AxisYConverter.IsInViewRagne(PointOutDataRowIndex))
{
if (PointOutDataRowIndex < 0)
{
PointOutDataRowIndex = 0;
}
else
{
PointOutDataRowIndex = ItemsSource.Count - 1;
}
}
var rowY = AxisYConverter.DataToScreen(PointOutDataRowIndex);
var y = rowY + BlockConverter.GetTop(PointOutBlock);
return(y);
}
private void HandleEvent(Func <IBlockGridLayer, bool> handle, Point point, RoutedEventArgs e)
{
if ((AxisYConverter.IsInViewRagne(point.Y) && AxisXConverter.IsInViewRagne(point.X)) || HeaderIsHitted() || e.OriginalSource != e.Source)
{
foreach (BlockGridLayerBase blockGridLayerBase in Children)
{
if (blockGridLayerBase.Visibility == Visibility.Visible)
{
if (handle(blockGridLayerBase))
{
break;
}
}
}
}
else // out of range
{
if (e.RoutedEvent == Mouse.MouseUpEvent)
{
foreach (var blockGridLayerBase in Children)
{
blockGridLayerBase.OnParentHitOutOfRangePrivate();
}
}
}
//var head = Header as FrameworkElement;
//IEnumerable<BlockGridLayerBase> layers;
//if (head != null && point.Y <= head.ActualHeight)
// layers =
// Children.OfType<BlockGridLayerBase>().Where(c => (c.Region & LayerRegion.Head) == LayerRegion.Head);
//else
// layers =
// Children.OfType<BlockGridLayerBase>().Where(c => (c.Region & LayerRegion.Body) == LayerRegion.Body);
//BMK Refine Children When HandleEvent
}
private void ScrollToInitalDrawLocation()
{
#region 自动滚动到编辑格
Point point;
if (!IsInViewRange(out point))
{
//Scroll to 当 InitalDrawLocation 不再可视范围内, 自动定位
if (!InitalDrawLocation.HasValue)
{
return;
}
if (!AxisYConverter.IsInViewRagne(point.Y))
{
AxisPanel.SetVerticalOffset(InitalDrawLocation.Value.Y);
}
if (!AxisXConverter.IsInViewRagne(point.X))
{
AxisPanel.SetHorizontalOffset(InitalDrawLocation.Value.X);
}
}
#endregion
}
private void SetToolTip(object sender, EventArgs e)
{
_timer.Stop();
if (PointOutBlock == null)
{
return;
}
var point = Mouse.GetPosition(this);
if (!AxisYConverter.IsInViewRagne(point.Y) || !AxisXConverter.IsInViewRagne(point.X))
{
return;
}
ToolTip.SaftyInvoke <ToolTip>(t =>
{
t.IsOpen = true;
t.Placement = PlacementMode.Mouse;
t.Content = PointOutBlock;
});
}
private object PointoutBlock(Point e)
{
var y = e.Y; //- GetHeaderHeight();
//var y1 = AxisYConverter.ScreenToData(y);
//var y2 = (int)(y / Interval) + AxisYConverter.ScreenToData(0);
//if (y1 != y2)
// Debug.Print(string.Format("-------- ViewportToDataY called : y1 = {0} y2 = {1}", y1, y2));
// BMK Ambiguous getRowIndex
PointOutDataRowIndex = AxisYConverter.ScreenToData(y);
object fountBlock = null;
if (ItemsSource != null && 0 <= PointOutDataRowIndex && PointOutDataRowIndex < ItemsSource.Count)
{
var dateTime = AxisXConverter.ScreenToData(e.X); // current mouse moved postion
var positionY = y % Interval; // for Top useage
if (CellMode)
{
var date = dateTime.Date;
ItemsSource[PointOutDataRowIndex].SaftyInvoke <IEnumerable>(
o =>
{
fountBlock = o.OfType <ITerm>().FirstOrDefault(t =>
{
//using HrDate
var blockStart = BlockConverter.GetStart(t);
return((date == blockStart) && !TryPrevent(t));
});
});
if (RecursivelyPointout)
{
ItemsSource[PointOutDataRowIndex].SaftyInvoke <IDateIndexer <DateTerm> >(o => o[date].SaftyInvoke(b => fountBlock = b));
}
}
else
{
ItemsSource[PointOutDataRowIndex].SaftyInvoke <IEnumerable>(
o =>
{
fountBlock = o.OfType <ITerm>().LastOrDefault(block =>
{
var blockStart = BlockConverter.GetStart(block);
var blockTop = BlockConverter.GetTop(block);
return((blockStart <= dateTime && dateTime < block.End &&
blockTop <= positionY && (BlockConverter.GetHeight(block) + blockTop) >= positionY) && !TryPrevent(block));
});
});
}
}
if (fountBlock != null)
{
PointOutDataRowTop = (e.Y - e.Y % Interval) + BlockConverter.GetTop(fountBlock);
}
return(fountBlock);
}
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
}
