/// <summary>
/// Draws the legend.
/// </summary>
internal override void Draw()
{
ChartRendererInfo cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
LegendRendererInfo lri = cri.legendRendererInfo;
if (lri == null)
{
return;
}
XGraphics gfx = this.rendererParms.Graphics;
RendererParameters parms = new RendererParameters();
parms.Graphics = gfx;
LegendEntryRenderer ler = new LegendEntryRenderer(parms);
bool verticalLegend = (lri.legend.docking == DockingType.Left || lri.legend.docking == DockingType.Right);
int paddingFactor = 1;
if (lri.BorderPen != null)
{
paddingFactor = 2;
}
XRect legendRect = lri.Rect;
legendRect.X += LegendRenderer.LeftPadding * paddingFactor;
legendRect.Y += LegendRenderer.TopPadding * paddingFactor;
foreach (LegendEntryRendererInfo leri in cri.legendRendererInfo.Entries)
{
XRect entryRect = legendRect;
entryRect.Width = leri.Width;
entryRect.Height = leri.Height;
leri.Rect = entryRect;
parms.RendererInfo = leri;
ler.Draw();
if (verticalLegend)
{
legendRect.Y += entryRect.Height + LegendRenderer.EntrySpacing;
}
else
{
legendRect.X += entryRect.Width + LegendRenderer.EntrySpacing;
}
}
// Draw border around legend
if (lri.BorderPen != null)
{
XRect borderRect = lri.Rect;
borderRect.X += LegendRenderer.LeftPadding;
borderRect.Y += LegendRenderer.TopPadding;
borderRect.Width -= LegendRenderer.LeftPadding + LegendRenderer.RightPadding;
borderRect.Height -= LegendRenderer.TopPadding + LegendRenderer.BottomPadding;
gfx.DrawRectangle(lri.BorderPen, borderRect);
}
}
/// <summary>
/// Initializes the legend's renderer info. Each data point will be represented through
/// a legend entry renderer info.
/// </summary>
internal override RendererInfo Init()
{
LegendRendererInfo lri = null;
ChartRendererInfo cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
if (cri.chart.legend != null)
{
lri = new LegendRendererInfo();
lri.legend = cri.chart.legend;
lri.Font = Converter.ToXFont(lri.legend.font, cri.DefaultFont);
lri.FontColor = new XSolidBrush(XColors.Black);
if (lri.legend.lineFormat != null)
{
lri.BorderPen = Converter.ToXPen(lri.legend.lineFormat, XColors.Black, DefaultLineWidth, XDashStyle.Solid);
}
XSeries xseries = null;
if (cri.chart.xValues != null)
{
xseries = cri.chart.xValues[0];
}
int index = 0;
SeriesRendererInfo sri = cri.seriesRendererInfos[0];
lri.Entries = new LegendEntryRendererInfo[sri.pointRendererInfos.Length];
foreach (PointRendererInfo pri in sri.pointRendererInfos)
{
LegendEntryRendererInfo leri = new LegendEntryRendererInfo();
leri.seriesRendererInfo = sri;
leri.legendRendererInfo = lri;
leri.EntryText = string.Empty;
if (xseries != null)
{
if (xseries.Count > index)
{
leri.EntryText = xseries[index].Value;
}
}
else
{
leri.EntryText = (index + 1).ToString(CultureInfo.InvariantCulture); // create default/dummy entry
}
leri.MarkerPen = pri.LineFormat;
leri.MarkerBrush = pri.FillFormat;
lri.Entries[index++] = leri;
}
}
return(lri);
}
/// <summary>
/// Initializes the legend's renderer info. Each data series will be represented through
/// a legend entry renderer info.
/// </summary>
internal override RendererInfo Init()
{
LegendRendererInfo lri = null;
ChartRendererInfo cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
if (cri.chart.legend != null)
{
lri = new LegendRendererInfo();
lri.legend = cri.chart.legend;
lri.Font = Converter.ToXFont(lri.legend.font, cri.DefaultFont);
lri.FontColor = new XSolidBrush(XColors.Black);
if (lri.legend.lineFormat != null)
{
lri.BorderPen = Converter.ToXPen(lri.legend.lineFormat, XColors.Black, DefaultLineWidth, XDashStyle.Solid);
}
lri.Entries = new LegendEntryRendererInfo[cri.seriesRendererInfos.Length];
int index = 0;
foreach (SeriesRendererInfo sri in cri.seriesRendererInfos)
{
LegendEntryRendererInfo leri = new LegendEntryRendererInfo();
leri.seriesRendererInfo = sri;
leri.legendRendererInfo = lri;
leri.EntryText = sri.series.name;
if (sri.markerRendererInfo != null)
{
leri.MarkerSize.Width = leri.MarkerSize.Height = sri.markerRendererInfo.MarkerSize.Point;
leri.MarkerPen = new XPen(sri.markerRendererInfo.MarkerForegroundColor);
leri.MarkerBrush = new XSolidBrush(sri.markerRendererInfo.MarkerBackgroundColor);
}
else
{
leri.MarkerPen = sri.LineFormat;
leri.MarkerBrush = sri.FillFormat;
}
if (cri.chart.type == ChartType.ColumnStacked2D)
{
// stacked columns are revers ordered
lri.Entries[cri.seriesRendererInfos.Length - index++ - 1] = leri;
}
else
{
lri.Entries[index++] = leri;
}
}
}
return(lri);
}
/// <summary>
/// Layouts and calculates the space used by the legend.
/// </summary>
internal override void Format()
{
ChartRendererInfo cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
LegendRendererInfo lri = cri.legendRendererInfo;
if (lri == null)
{
return;
}
RendererParameters parms = new RendererParameters();
parms.Graphics = this.rendererParms.Graphics;
bool verticalLegend = (lri.legend.docking == DockingType.Left || lri.legend.docking == DockingType.Right);
XSize maxMarkerArea = new XSize();
LegendEntryRenderer ler = new LegendEntryRenderer(parms);
foreach (LegendEntryRendererInfo leri in lri.Entries)
{
parms.RendererInfo = leri;
ler.Format();
maxMarkerArea.Width = Math.Max(leri.MarkerArea.Width, maxMarkerArea.Width);
maxMarkerArea.Height = Math.Max(leri.MarkerArea.Height, maxMarkerArea.Height);
if (verticalLegend)
{
lri.Width = Math.Max(lri.Width, leri.Width);
lri.Height += leri.Height;
}
else
{
lri.Width += leri.Width;
lri.Height = Math.Max(lri.Height, leri.Height);
}
}
// Add padding to left, right, top and bottom
int paddingFactor = 1;
if (lri.BorderPen != null)
{
paddingFactor = 2;
}
lri.Width += (LegendRenderer.LeftPadding + LegendRenderer.RightPadding) * paddingFactor;
lri.Height += (LegendRenderer.TopPadding + LegendRenderer.BottomPadding) * paddingFactor;
if (verticalLegend)
{
lri.Height += LegendRenderer.EntrySpacing * (lri.Entries.Length - 1);
}
else
{
lri.Width += LegendRenderer.EntrySpacing * (lri.Entries.Length - 1);
}
foreach (LegendEntryRendererInfo leri in lri.Entries)
{
leri.MarkerArea = maxMarkerArea;
}
}