SetGraphScale
(
Int32 bitmapWidthPx,
Int32 bitmapHeightPx,
Double screenDpi
)
{
Debug.Assert(screenDpi > 0);
Debug.Assert(bitmapWidthPx > 0);
Debug.Assert(bitmapHeightPx > 0);
AssertValid();
GraphDrawer oGraphDrawer = m_oNodeXLControl.GraphDrawer;
GroupDrawer oGroupDrawer = oGraphDrawer.GroupDrawer;
// Note that group labels have their own scale, distinct from the scale
// used by the other graph elements.
m_dOriginalGraphScale = oGraphDrawer.GraphScale;
m_dOriginalGroupLabelScale = oGroupDrawer.LabelScale;
// Get the actual control size, in units of 1/96".
Double dActualWidthWpf = m_oNodeXLControl.ActualWidth;
Double dActualHeightWpf = m_oNodeXLControl.ActualHeight;
// Convert this to pixels.
Double dActualWidthPx = WpfGraphicsUtil.WpfToPx(
dActualWidthWpf, screenDpi);
Double dActualHeightPx = WpfGraphicsUtil.WpfToPx(
dActualHeightWpf, screenDpi);
// If the image is smaller (or larger) than the control, adjust the
// GraphScale property to shrink (or enlarge) the graph's vertices and
// edges accordingly. Use the smaller of the two bitmap/actual ratio.
Double dGraphScaleFactor = Math.Min(
bitmapWidthPx / dActualWidthPx,
bitmapHeightPx / dActualHeightPx
);
Double dGraphScale =
PinScale(m_dOriginalGraphScale * dGraphScaleFactor);
Double dGroupLabelScale =
PinScale(m_dOriginalGroupLabelScale * dGraphScaleFactor);
// Don't set the NodeXLControl.GraphScale property, which would cause
// the NodeXLControl.GraphScaleChanged event to fire. Set the property
// on the GraphDrawer instead.
oGraphDrawer.GraphScale = dGraphScale;
oGroupDrawer.LabelScale = dGroupLabelScale;
AssertValid();
}
RestoreGraphScale()
{
AssertValid();
GraphDrawer oGraphDrawer = m_oNodeXLControl.GraphDrawer;
if (m_dOriginalGraphScale != 0)
{
oGraphDrawer.GraphScale = m_dOriginalGraphScale;
}
if (m_dOriginalGroupLabelScale != 0)
{
oGraphDrawer.GroupDrawer.LabelScale = m_dOriginalGroupLabelScale;
}
}
//*************************************************************************
// Constructor: NodeXLVisual()
//
/// <summary>
/// Initializes a new instance of the <see cref="NodeXLVisual" /> class.
/// </summary>
//*************************************************************************
public NodeXLVisual()
{
m_oGraphDrawer = new GraphDrawer(this);
AssertValid();
}
CreateGraphDrawer()
{
m_oGraphDrawer = new GraphDrawer(this);
m_oGraphDrawer.EdgeDrawer.CurveStyleChanged +=
new EventHandler(EdgeDrawer_CurveStyleChanged);
// AssertValid();
}
//*************************************************************************
// Constructor: NodeXLVisual()
//
/// <summary>
/// Initializes a new instance of the <see cref="NodeXLVisual" /> class.
/// </summary>
//*************************************************************************
public NodeXLVisual()
{
m_oGraphDrawer = new GraphDrawer(this);
AssertValid();
}
TransferToGraphDrawer
(
GraphDrawer graphDrawer
)
{
Debug.Assert(graphDrawer != null);
AssertValid();
Font oFont = this.Font;
System.Windows.Media.Typeface oTypeface =
WpfGraphicsUtil.FontToTypeface(oFont);
Double dFontSize = WpfGraphicsUtil.SystemDrawingFontSizeToWpfFontSize(
oFont.Size);
VertexDrawer oVertexDrawer = graphDrawer.VertexDrawer;
oVertexDrawer.SetFont(oTypeface, dFontSize);
oVertexDrawer.LabelFillColor =
WpfGraphicsUtil.ColorToWpfColor(this.VertexLabelFillColor);
oVertexDrawer.LabelPosition = this.VertexLabelPosition;
oVertexDrawer.MaximumLabelLength = this.VertexLabelMaximumLength;
oVertexDrawer.LabelWrapText = this.VertexLabelWrapText;
oVertexDrawer.LabelWrapMaxTextWidth =
this.VertexLabelWrapMaxTextWidth;
EdgeDrawer oEdgeDrawer = graphDrawer.EdgeDrawer;
oEdgeDrawer.SetFont(oTypeface, dFontSize);
oEdgeDrawer.LabelTextColor =
WpfGraphicsUtil.ColorToWpfColor(this.EdgeLabelTextColor);
oEdgeDrawer.MaximumLabelLength = this.EdgeLabelMaximumLength;
GroupDrawer oGroupDrawer = graphDrawer.GroupDrawer;
oGroupDrawer.SetFont(oTypeface, GroupLabelFontSize);
oGroupDrawer.LabelTextColor = WpfGraphicsUtil.ColorToWpfColor(
Color.FromArgb( (new AlphaConverter() ).WorkbookToGraphAsByte(
this.GroupLabelTextAlpha),
this.GroupLabelTextColor)
);
oGroupDrawer.LabelPosition = this.GroupLabelPosition;
}
TransferToGraphDrawer
(
GraphDrawer graphDrawer
)
{
Debug.Assert(graphDrawer != null);
AssertValid();
this.LabelUserSettings.TransferToGraphDrawer(graphDrawer);
graphDrawer.BackColor =
WpfGraphicsUtil.ColorToWpfColor(this.BackColor);
if ( !String.IsNullOrEmpty(this.BackgroundImageUri) )
{
graphDrawer.BackgroundImage =
( new WpfImageUtil() ).GetImageSynchronousIgnoreDpi(
this.BackgroundImageUri);
}
else
{
graphDrawer.BackgroundImage = null;
}
EdgeDrawer oEdgeDrawer = graphDrawer.EdgeDrawer;
VertexDrawer oVertexDrawer = graphDrawer.VertexDrawer;
EdgeWidthConverter oEdgeWidthConverter = new EdgeWidthConverter();
AlphaConverter oAlphaConverter = new AlphaConverter();
oEdgeDrawer.Width =
oEdgeWidthConverter.WorkbookToGraph(this.EdgeWidth);
oEdgeDrawer.Color = WpfGraphicsUtil.ColorToWpfColor(
Color.FromArgb(oAlphaConverter.WorkbookToGraphAsByte(
this.EdgeAlpha),
this.EdgeColor)
);
oEdgeDrawer.CurveStyle = this.EdgeCurveStyle;
oEdgeDrawer.BezierDisplacementFactor =
this.EdgeBezierDisplacementFactor;
oEdgeDrawer.SelectedColor = WpfGraphicsUtil.ColorToWpfColor(
this.SelectedEdgeColor);
oEdgeDrawer.RelativeArrowSize = this.RelativeArrowSize;
oVertexDrawer.Shape = this.VertexShape;
oVertexDrawer.Radius = ( new VertexRadiusConverter() ).WorkbookToGraph(
this.VertexRadius);
oVertexDrawer.Effect = this.VertexEffect;
oVertexDrawer.RelativeOuterGlowSize = this.VertexRelativeOuterGlowSize;
oVertexDrawer.Color = WpfGraphicsUtil.ColorToWpfColor(
Color.FromArgb(oAlphaConverter.WorkbookToGraphAsByte(
this.VertexAlpha),
this.VertexColor)
);
oVertexDrawer.SelectedColor = WpfGraphicsUtil.ColorToWpfColor(
this.SelectedVertexColor);
}