private void CalculateChildLines(IHierarchyItem item)
{
var ySelectedItemEnd = (item.Parents.Count * (int)HierarchyValues.ItemHeight) + (int)HierarchyValues.SelectedItemHeight + HierarchyValues.SelectedItemVerticalMargin;
var xBase = HierarchyValues.BaseMarginSize + (HierarchyValues.ChildIndentLevel - 1) * HierarchyValues.IndentSize;
var xStartChild = xBase + HierarchyValues.HorizontalLineXPos;
var xEndChild = xStartChild + HierarchyValues.HorizontalLineSize;
var lastYValue = 0;
for (var i = 0; i < item.Children.Count; i++)
{
var yBase = HierarchyValues.SelectedItemVerticalMargin + i * (int)HierarchyValues.ItemHeight;
var yValue = ySelectedItemEnd + yBase + (int)HierarchyValues.ItemHeight / 2;
var line = new HierarchyLine
{
X1 = xStartChild,
X2 = xEndChild,
Y1 = yValue,
Y2 = yValue,
};
_collection.Add(line);
lastYValue = yValue;
}
if (item.Children.Any())
{
var verticalLine = new HierarchyLine
{
X1 = xStartChild,
X2 = xStartChild,
Y1 = ySelectedItemEnd,
Y2 = lastYValue
};
_collection.Add(verticalLine);
}
}
private void CalculateParentLines(IHierarchyItem item)
{
var xStart = HierarchyValues.BaseMarginSize + HierarchyValues.HorizontalLineXPos;
var xEnd = HierarchyValues.BaseMarginSize + HierarchyValues.HorizontalLineXPos + HierarchyValues.HorizontalLineSize;
for (var i = 0; i < item.Parents.Count; i++)
{
var yBase = i * (int)HierarchyValues.ItemHeight;
var yValue = yBase + (int)HierarchyValues.ItemHeight / 2;
var line = new HierarchyLine
{
X1 = xStart,
X2 = xEnd,
Y1 = yValue,
Y2 = yValue,
};
_collection.Add(line);
}
if (item.Parents.Any())
{
var yParentEnd = item.Parents.Count * (int)HierarchyValues.ItemHeight;
var yValue = yParentEnd + HierarchyValues.SelectedItemVerticalMargin + (int)HierarchyValues.SelectedItemHeight / 2;
var verticalLine = new HierarchyLine
{
X1 = xEnd,
X2 = xEnd,
Y1 = (int)HierarchyValues.ItemHeight / 2,
Y2 = yValue
};
var horizontalLine = new HierarchyLine
{
X1 = xEnd,
X2 = HierarchyValues.BaseMarginSize + HierarchyValues.SelectedIndentLevel * HierarchyValues.IndentSize,
Y1 = yValue,
Y2 = yValue
};
_collection.Add(verticalLine);
_collection.Add(horizontalLine);
}
}