private void GenerateItems()
{
if (Node == null)
{
ItemsPresenter.Children.Clear();
}
else if (!ItemsValid)
{
ItemsValid = true;
ItemsPresenter.Children.Clear();
GanttItem item = null;
if (Node.Sections.Count == 1)
{
if (Node.ChildNodes.Count == 0)
{
item = new GanttItem();
}
else
{
item = new HeaderGanttItem();
}
item.GapBackgroundBrush = this.GapBackgroundBrush;
item.GapBorderBrush = this.GapBorderBrush;
item.ToolTipContent = this.Node;
item.ToolTipContentTemplate = this.ParentPanel.ToolTipContentTemplate;
item.Section = Node.Sections[0];
item.ParentRow = this;
item.Node = Node;
ItemsPresenter.Children.Add(item);
}
else
{
foreach (GanttNodeSection section in Node.Sections)
{
item = new GanttItem();
if (section.BackgroundBrush != null)
{
item.Background = section.BackgroundBrush;
}
item.ToolTipContent = this.Node;
item.ToolTipContentTemplate = this.ParentPanel.ToolTipContentTemplate;
item.ParentRow = this;
item.Node = Node;
item.Section = section;
ItemsPresenter.Children.Add(item);
}
}
}
}
private void UpdateDependencies(GanttItem ganttItem)
{
var deps = Dependencies.Where(d => d.ChildNode == ganttItem.Node || d.ParentNode == ganttItem.Node);
var items = DependencyPresenter.Children.Cast <UIElement>().Where(ui => (ui as GanttDependencyItem).Dependency.ChildNode == ganttItem.Node || (ui as GanttDependencyItem).Dependency.ParentNode == ganttItem.Node);
foreach (UIElement ui in items)
{
(ui as GanttDependencyItem).UpdateDependencyLines();
}
}
protected override Size ArrangeOverride(Size finalSize)
{
Debug.WriteLine("GanttItemsPresenter.ArrangeOverride()");
for (int i = 0; i < Children.Count; i++)
{
GanttItem gi = (GanttItem)Children[i];
double x1, x2;
//Actual item
x1 = ParentRow.ParentPanel.ConvertDateToPosition(gi.Section.StartDate);
x2 = ParentRow.ParentPanel.ConvertDateToPosition(gi.Section.EndDate);
double width = x2 - x1;
double x3 = 0d;
//Gap
if (gi.Node.ShowGap && i == Children.Count - 1 && ParentRow.RowIndex < ParentRow.ParentPanel.Nodes.Count - 1)
{
IGanttNode nextNode = ParentRow.ParentPanel.Nodes[ParentRow.RowIndex + 1];
if (nextNode.StartDate > gi.Node.EndDate && nextNode.ParentNode == gi.Node.ParentNode)
{
x3 = ParentRow.ParentPanel.ConvertDateToPosition(nextNode.StartDate);
width += x3 - x2;
}
}
if (width > 0)
{
gi.Arrange(new Rect(x1, 0, width, ParentRow.ActualHeight));
}
else
{
gi.Arrange(new Rect(0, 0, 0, ParentRow.ActualHeight));
}
}
return(base.ArrangeOverride(finalSize));
}
protected override Size MeasureOverride(Size availableSize)
{
Debug.WriteLine("GanttItemsPresenter.MeasureOverride(" + availableSize.ToString() + ")");
for (int i = 0; i < Children.Count; i++)
{
GanttItem gi = (GanttItem)Children[i];
double x1, x2;
x1 = ParentRow.ParentPanel.ConvertDateToPosition(gi.Section.StartDate);
x2 = ParentRow.ParentPanel.ConvertDateToPosition(gi.Section.EndDate);
double width = x2 - x1;
double x3 = 0d;
//Gap
if (gi.Node.ShowGap && i == Children.Count - 1 && ParentRow.RowIndex < ParentRow.ParentPanel.Nodes.Count - 1)
{
IGanttNode nextNode = ParentRow.ParentPanel.Nodes[ParentRow.RowIndex + 1];
if (nextNode.StartDate > gi.Node.EndDate && nextNode.ParentNode == gi.Node.ParentNode)
{
x3 = ParentRow.ParentPanel.ConvertDateToPosition(nextNode.StartDate);
width += x3 - x2;
}
}
if (width < 0)
{
width = 0;
}
gi.Measure(new Size(width, ParentRow.ActualHeight));
}
return(base.MeasureOverride(availableSize));
}
private void UpdateDependencies(GanttItem ganttItem)
{
var deps = Dependencies.Where(d => d.ChildNode == ganttItem.Node || d.ParentNode == ganttItem.Node);
var items = DependencyPresenter.Children.Cast<UIElement>().Where(ui => (ui as GanttDependencyItem).Dependency.ChildNode == ganttItem.Node || (ui as GanttDependencyItem).Dependency.ParentNode == ganttItem.Node);
foreach (UIElement ui in items)
{
(ui as GanttDependencyItem).UpdateDependencyLines();
}
}
public GanttItemEventArgs(GanttItem item)
{
Item = item;
}
private void GenerateItems()
{
if (Node == null)
{
ItemsPresenter.Children.Clear();
}
else if (!ItemsValid)
{
ItemsValid = true;
ItemsPresenter.Children.Clear();
GanttItem item = null;
if (Node.Sections.Count == 1)
{
if (Node.ChildNodes.Count == 0)
item = new GanttItem();
else
item = new HeaderGanttItem();
item.GapBackgroundBrush = this.GapBackgroundBrush;
item.GapBorderBrush = this.GapBorderBrush;
item.ToolTipContent = this.Node;
item.ToolTipContentTemplate = this.ParentPanel.ToolTipContentTemplate;
item.Section = Node.Sections[0];
item.ParentRow = this;
item.Node = Node;
ItemsPresenter.Children.Add(item);
}
else
{
foreach (GanttNodeSection section in Node.Sections)
{
item = new GanttItem();
if(section.BackgroundBrush != null)
item.Background = section.BackgroundBrush;
item.ToolTipContent = this.Node;
item.ToolTipContentTemplate = this.ParentPanel.ToolTipContentTemplate;
item.ParentRow = this;
item.Node = Node;
item.Section = section;
ItemsPresenter.Children.Add(item);
}
}
}
}
public GanttItemEventArgs(GanttItem item)
{
Item = item;
}
private void GanttRow_MouseMove(object sender, MouseEventArgs e)
{
_sameSizeCnt = 1;
if (_ProcessingMove || IsReadOnly)
{
return;
}
else
{
_ProcessingMove = true;
}
Point cursorPosition = e.GetPosition(this.RootUI());
List <GanttItem> items = ItemsPresenter.Children.OfType <GanttItem>().ToList();
for (int i = 0; i < items.Count; i++)
{
GanttItem item = items[i];
GeneralTransform gt = item.TransformToVisual(this.RootUI());
Point itemPosition = gt.Transform(new Point(0, 0));
double distance = 0d;
distance = cursorPosition.X - _DragStart.X;
if (item.DragState == DragState.ResizeLeft)
{
Cursor = Cursors.SizeWE;
}
else if (item.DragState == DragState.ResizeRight)
{
Cursor = Cursors.SizeWE;
}
else if (item.DragState == DragState.Whole)
{
Cursor = Cursors.Hand;
}
else
{
_ProcessingMove = false;
continue;
}
TimeSpan ts = GetTimeSpanFromDistance(distance);
#if DEBUG
ParentPanel.Content = item.Name;
ParentPanel.Content = distance.ToString() + " " + ts.ToString() + " " + item.DragState.ToString();
#endif
if (Math.Abs(ts.TotalDays) >= 1)
{
if (item.DragState == DragState.ResizeLeft)
{
ParentPanel.RaiseItemChanging(new GanttItemEventArgs(item));
DateTime newDate = item.Section.StartDate.Add(ts);
if (newDate < item.Section.EndDate)
{
item.Section.StartDate = newDate;
item.InvalidateMeasure();
if (RowIndex > 0)
{
(ParentPanel.RowPresenter.Children[RowIndex - 1] as GanttRow).Invalidate();
}
}
ParentPanel.RaiseItemChanged(new GanttItemEventArgs(item));
}
else if (item.DragState == DragState.ResizeRight)
{
ParentPanel.RaiseItemChanging(new GanttItemEventArgs(item));
DateTime newDate = item.Section.EndDate.Add(ts);
if (newDate > item.Section.StartDate)
{
item.Section.EndDate = newDate;
item.InvalidateMeasure();
if (RowIndex > 0)
{
(ParentPanel.RowPresenter.Children[RowIndex - 1] as GanttRow).Invalidate();
}
}
ParentPanel.RaiseItemChanged(new GanttItemEventArgs(item));
}
else if (item.DragState == DragState.Whole)
{
ParentPanel.RaiseItemChanging(new GanttItemEventArgs(item));
DateTime newStart = item.Section.StartDate.Add(ts);
DateTime newEnd = item.Section.EndDate.Add(ts);
if (distance > 0)
{
item.Section.EndDate = newEnd;
item.Section.StartDate = newStart;
}
else
{
item.Section.StartDate = newStart;
item.Section.EndDate = newEnd;
}
Invalidate();
// item.InvalidateArrange();
if (RowIndex > 0)
{
(ParentPanel.RowPresenter.Children[RowIndex - 1] as GanttRow).Invalidate();
}
ParentPanel.RaiseItemChanged(new GanttItemEventArgs(item));
}
_DragStart = e.GetPosition(this.RootUI());
}
}
_ProcessingMove = false;
}