TryGetGroupLayoutDrawingInfo
(
IGraph graph,
out GroupLayoutDrawingInfo groupLayoutDrawingInfo
)
{
Debug.Assert(graph != null);
groupLayoutDrawingInfo = null;
Object oGroupLayoutDrawingInfoAsObject;
if (graph.TryGetValue(ReservedMetadataKeys.GroupLayoutDrawingInfo,
typeof(GroupLayoutDrawingInfo),
out oGroupLayoutDrawingInfoAsObject))
{
groupLayoutDrawingInfo =
(GroupLayoutDrawingInfo)oGroupLayoutDrawingInfoAsObject;
return(true);
}
return(false);
}
TryGetGroupLayoutDrawingInfo
(
IGraph graph,
out GroupLayoutDrawingInfo groupLayoutDrawingInfo
)
{
Debug.Assert(graph != null);
groupLayoutDrawingInfo = null;
Object oGroupLayoutDrawingInfoAsObject;
if ( graph.TryGetValue(ReservedMetadataKeys.GroupLayoutDrawingInfo,
typeof(GroupLayoutDrawingInfo),
out oGroupLayoutDrawingInfoAsObject) )
{
groupLayoutDrawingInfo =
(GroupLayoutDrawingInfo)oGroupLayoutDrawingInfoAsObject;
return (true);
}
return (false);
}
DrawCombinedIntergroupEdge
(
DrawingContext oDrawingContext,
GraphDrawingContext oGraphDrawingContext,
IntergroupEdgeInfo oCombinedIntergroupEdge,
GroupLayoutDrawingInfo oGroupLayoutDrawingInfo
)
{
Debug.Assert(oDrawingContext != null);
Debug.Assert(oGraphDrawingContext != null);
Debug.Assert(oCombinedIntergroupEdge != null);
Debug.Assert(oGroupLayoutDrawingInfo != null);
AssertValid();
Rect oGroupRectangle1, oGroupRectangle2;
if (
!TryGetGroupRectangle(
oGroupLayoutDrawingInfo.GroupsToDraw[
oCombinedIntergroupEdge.Group1Index],
out oGroupRectangle1)
||
!TryGetGroupRectangle(
oGroupLayoutDrawingInfo.GroupsToDraw[
oCombinedIntergroupEdge.Group2Index],
out oGroupRectangle2)
)
{
return;
}
Point oGroupRectangle1Center =
WpfGraphicsUtil.GetRectCenter(oGroupRectangle1);
Point oGroupRectangle2Center =
WpfGraphicsUtil.GetRectCenter(oGroupRectangle2);
Point oBezierControlPoint = GetBezierControlPoint(oGraphDrawingContext,
oGroupRectangle1Center, oGroupRectangle2Center,
CombinedIntergroupEdgeBezierDisplacementFactor
);
PathGeometry oBezierCurve =
WpfPathGeometryUtil.GetQuadraticBezierCurve(oGroupRectangle1Center,
oGroupRectangle2Center, oBezierControlPoint);
Color oColor = GetContrastingColor(
oGraphDrawingContext, CombinedIntergroupEdgeAlpha, true);
Pen oPen = CreateFrozenPen(CreateFrozenSolidColorBrush(oColor),
GetCombinedIntergroupEdgePenWidth(oCombinedIntergroupEdge) *
this.GraphScale,
DashStyles.Solid, PenLineCap.Round);
oDrawingContext.DrawGeometry(null, oPen, oBezierCurve);
}
TestConstructor()
{
// Has CombinedIntergroupEdges.
GroupInfo [] aoGroupInfo = new GroupInfo [] {
new GroupInfo(),
new GroupInfo(),
new GroupInfo()
};
const Double PenWidth = 1.234;
IntergroupEdgeInfo[] aoCombinedIntergroupEdges =
new IntergroupEdgeInfo[5];
GroupLayoutDrawingInfo oGroupLayoutDrawingInfo =
new GroupLayoutDrawingInfo(aoGroupInfo, PenWidth,
aoCombinedIntergroupEdges);
Assert.AreEqual(aoGroupInfo, oGroupLayoutDrawingInfo.GroupsToDraw);
Assert.AreEqual(PenWidth, oGroupLayoutDrawingInfo.PenWidth);
Assert.AreEqual(aoCombinedIntergroupEdges,
oGroupLayoutDrawingInfo.CombinedIntergroupEdges);
}
TestConstructor2()
{
// Null CombinedIntergroupEdges.
GroupInfo [] aoGroupInfo = new GroupInfo [] {
new GroupInfo(),
new GroupInfo(),
new GroupInfo()
};
const Double PenWidth = 1.234;
GroupLayoutDrawingInfo oGroupLayoutDrawingInfo =
new GroupLayoutDrawingInfo(aoGroupInfo, PenWidth, null);
Assert.AreEqual(aoGroupInfo, oGroupLayoutDrawingInfo.GroupsToDraw);
Assert.AreEqual(PenWidth, oGroupLayoutDrawingInfo.PenWidth);
Assert.IsNull(oGroupLayoutDrawingInfo.CombinedIntergroupEdges);
}