//*************************************************************************
// Constructor: GroupDrawer()
//
/// <summary>
/// Initializes a new instance of the <see cref="GroupDrawer" /> class.
/// </summary>
//*************************************************************************
public GroupDrawer()
{
m_oLabelTextColor = SystemColors.WindowTextColor;
m_eLabelPosition = VertexLabelPosition.MiddleCenter;
m_dLabelScale = 1.0;
m_oFormattedTextManager = new FormattedTextManager();
AssertValid();
}
//*************************************************************************
// Constructor: GroupDrawer()
//
/// <summary>
/// Initializes a new instance of the <see cref="GroupDrawer" /> class.
/// </summary>
//*************************************************************************
public GroupDrawer()
{
m_oLabelTextColor = SystemColors.WindowTextColor;
m_eLabelPosition = VertexLabelPosition.MiddleCenter;
m_dLabelScale = 1.0;
m_oFormattedTextManager = new FormattedTextManager();
AssertValid();
}
//*************************************************************************
// Constructor: VertexAndEdgeDrawerBase()
//
/// <summary>
/// Initializes a new instance of the <see
/// cref="VertexAndEdgeDrawerBase" /> class.
/// </summary>
//*************************************************************************
public VertexAndEdgeDrawerBase()
{
m_bUseSelection = true;
m_oColor = SystemColors.WindowTextColor;
m_oSelectedColor = SystemColors.HighlightColor;
m_btFilteredAlpha = 10;
m_oFormattedTextManager = new FormattedTextManager();
m_iMaximumLabelLength = Int32.MaxValue;
CreateDrawingObjects();
// AssertValid();
}
//*************************************************************************
// Constructor: VertexAndEdgeDrawerBase()
//
/// <summary>
/// Initializes a new instance of the <see
/// cref="VertexAndEdgeDrawerBase" /> class.
/// </summary>
//*************************************************************************
public VertexAndEdgeDrawerBase()
{
m_bUseSelection = true;
m_oColor = SystemColors.WindowTextColor;
m_oSelectedColor = SystemColors.HighlightColor;
m_btFilteredAlpha = 10;
m_oFormattedTextManager = new FormattedTextManager();
m_iMaximumLabelLength = Int32.MaxValue;
CreateDrawingObjects();
// AssertValid();
}
PostDrawVertex
(
VertexShape vertexShape,
Color vertexColor,
GraphDrawingContext graphDrawingContext,
DrawingContext drawingContext,
Boolean drawAsSelected,
Double graphScale,
VertexLabelDrawer vertexLabelDrawer,
FormattedTextManager formattedTextManager,
VertexDrawingHistory vertexDrawingHistory
)
{
Debug.Assert(graphDrawingContext != null);
Debug.Assert(drawingContext != null);
Debug.Assert(graphScale >= GraphDrawer.MinimumGraphScale);
Debug.Assert(graphScale <= GraphDrawer.MaximumGraphScale);
Debug.Assert(vertexLabelDrawer != null);
Debug.Assert(formattedTextManager != null);
Debug.Assert(vertexDrawingHistory != null);
AssertValid();
if (m_oCollapsedGroupVertex == null)
{
// The vertex that was drawn is not a collapsed group vertex. Do
// nothing.
return;
}
if (m_oCollapsedGroupAttributes.Count == 0)
{
// The vertex that was drawn represents a collapsed group, but no
// attributes were specified for it. By default, such a vertex
// gets a plus sign drawn on top of it.
DrawPlusSign(vertexShape, vertexColor, graphDrawingContext,
drawingContext, graphScale, vertexLabelDrawer,
formattedTextManager, vertexDrawingHistory);
}
else
{
// Check whether this this is a collapsed motif.
switch ( m_oCollapsedGroupAttributes.GetGroupType() )
{
case CollapsedGroupAttributeValues.FanMotifType:
DrawFanMotifFan(vertexColor, drawingContext,
drawAsSelected, graphScale, vertexDrawingHistory);
break;
default:
// Do nothing. This includes the D-connector motif case,
// which requires no post-drawing action.
break;
}
}
}
DrawPlusSign
(
VertexShape eVertexShape,
Color oVertexColor,
GraphDrawingContext oGraphDrawingContext,
DrawingContext oDrawingContext,
Double dGraphScale,
VertexLabelDrawer oVertexLabelDrawer,
FormattedTextManager oFormattedTextManager,
VertexDrawingHistory oVertexDrawingHistory
)
{
Debug.Assert(oGraphDrawingContext != null);
Debug.Assert(oDrawingContext != null);
Debug.Assert(dGraphScale >= GraphDrawer.MinimumGraphScale);
Debug.Assert(dGraphScale <= GraphDrawer.MaximumGraphScale);
Debug.Assert(oVertexLabelDrawer != null);
Debug.Assert(oFormattedTextManager != null);
Debug.Assert(oVertexDrawingHistory != null);
AssertValid();
Color oFillColor;
switch (eVertexShape)
{
case VertexShape.Circle:
case VertexShape.Square:
case VertexShape.Diamond:
case VertexShape.Triangle:
// The fill color is the color of the background. Adjust the
// fill color for the opacity of the vertex.
oFillColor = WpfGraphicsUtil.SetWpfColorAlpha(
oGraphDrawingContext.BackColor, oVertexColor.A);
break;
default:
oFillColor = oVertexColor;
break;
}
Color oContrastingColor =
WpfGraphicsUtil.GetContrastingColor(oFillColor);
// The font size used below was chosen so that it is large enough to be
// easily readable, but small enough to fit within the smallest
// collapsed group vertex created by this class.
oVertexLabelDrawer.DrawLabel(oDrawingContext, oGraphDrawingContext,
oVertexDrawingHistory, VertexLabelPosition.MiddleCenter,
oFormattedTextManager.CreateFormattedText("+", oContrastingColor,
15.0, dGraphScale),
oContrastingColor, false);
}
