protected override void OnParentMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton != MouseButtonState.Pressed)
{
return;
}
_startPoint = e.GetPosition(this);
_lastPoint = _startPoint;
if (!BlockConverter.CanConvert(PointOutBlock))
{
return;
}
_canMove = PointOutBlock != null && !BlockConverter.GetLocked(PointOutBlock);
if (_canMove)
{
StartMouseMovementTracking();
var date = AxisXConverter.ScreenToData(0);
var newDate = date.Add(StepMin);
_stepMinDistance = AxisXConverter.DataToScreen(newDate);
}
}
protected override void OnRender(DrawingContext drawingContext)
{
if (StartTime == (DateTime)StartTimeProperty.DefaultMetadata.DefaultValue || EndTime == (DateTime)EndTimeProperty.DefaultMetadata.DefaultValue || AxisPanel == null)
{
return;
}
var left = AxisXConverter.DataToScreen(StartTime);
var right = Math.Min(AxisXConverter.DataToScreen(EndTime), RenderSize.Width);
var width = right - left;
var rect = new Rect(Math.Max(0, left), RenderSize.Height - 14, Math.Min(right >= 0 ? right : 0, width > 0 ? width : 0), 14);//14 is Line Height
drawingContext.DrawRectangle(ColorRender, null, rect);
if (Text == null)
{
return;
}
Text.ToFormattedText(Foreground).Self(fTxt =>
{
if (AxisXConverter.DataToScreen(EndTime) - Text.GetTtextSize().Width < 0 || RenderSize.Width < left)
{
return;
}
var topMargin = 0;
drawingContext.DrawText(fTxt, new Point(left >= 0?left:0, topMargin));
});
}
protected override double GetCellInterval()
{
var dateTime = AxisXConverter.ScreenToData(0);
var hourWidth = AxisXConverter.DataToScreen(dateTime.AddHours(1));
//每个小时的长度除以PerHourCount;
return(hourWidth / PerHourCount);
}
private void ChangeBlockEdgeCursor(Point point)
{
var left = AxisXConverter.DataToScreen(PointOutBlock.Start);
var right = AxisXConverter.DataToScreen(PointOutBlock.End);
//如果在边上,鼠标形状就发生变化
if ((point.X - left) < ApprochDistance)
{
LayerContainer.ChangeCursor(Cursors.SizeWE);
FlagAdd(MouseState.LeftDirection);
}
else if ((right - point.X) < ApprochDistance)
{
LayerContainer.ChangeCursor(Cursors.SizeWE);
FlagAdd(MouseState.RightDirection);
}
}
protected override void OnParentDragOver(DragEventArgs e)
{
_isDragLeave = false;
var point = e.GetPosition(this);
if (_startPoint == null || _startPoint.Value.X < 0)
{
var date = AxisXConverter.ScreenToData(0);
var newDate = date.Add(StepMin);
_stepMinDistance = AxisXConverter.DataToScreen(newDate);
var pointTime = AxisXConverter.ScreenToData(point.X - point.X % _stepMinDistance).ConvertToMultiplesOfFive();
System.Diagnostics.Debug.Print(pointTime.ToString());
var arg = default(DragingRoutedEventArgs);
var data = e.Data.GetData("Castle.Proxies.TermStyleProxy");
if (data != null)
{
arg = new DragingRoutedEventArgs(pointTime, data, DraggingEvent, this);
RaiseEvent(arg);
}
if (arg != null && arg.Target != null)
{
_startPoint = point;
_lastPoint = _startPoint;
}
else
{
_startPoint = null;
_lastPoint = null;
}
PointOutBlock = arg == null ? null : arg.Target;
}
_canMove = PointOutBlock != null;
if (_canMove)
{
MouseMoving(point);
InvalidateVisual();
}
}
protected override void OnParentMouseDown(object sender, MouseButtonEventArgs e)
{
//xif (LayerContainer.TryPrevent()) return;
if (e.LeftButton != MouseButtonState.Pressed)
{
return;
}
_startPoint = e.GetPosition(this);
_lastPoint = _startPoint;
FlagAdd(MouseState.MouseDown);
var date = AxisXConverter.ScreenToData(0);
var newDate = date.Add(StepMin);
_stepMinDistance = AxisXConverter.DataToScreen(newDate);
if (FlagExist(MouseState.LeftDirection) || FlagExist(MouseState.RightDirection))
{
e.Handled = true;
InvalidPlacement = true; // 注意 首次按下鼠标时先设定没任何拖动之前都不是有效的位置改变
StartMouseMovementTracking();
}
}