/// <summary>
/// Calculates the space used by the legend entry.
/// </summary>
internal override void Format()
{
XGraphics gfx = this.rendererParms.Graphics;
LegendEntryRendererInfo leri = (LegendEntryRendererInfo)this.rendererParms.RendererInfo;
// Initialize
leri.MarkerArea.Width = MaxLegendMarkerWidth;
leri.MarkerArea.Height = MaxLegendMarkerHeight;
leri.MarkerSize = new XSize();
leri.MarkerSize.Width = leri.MarkerArea.Width;
leri.MarkerSize.Height = leri.MarkerArea.Height;
if (leri.seriesRendererInfo.series.chartType == ChartType.Line)
{
leri.MarkerArea.Width *= 3;
}
leri.Width = leri.MarkerArea.Width;
leri.Height = leri.MarkerArea.Height;
if (leri.EntryText != "")
{
leri.TextSize = gfx.MeasureString(leri.EntryText, leri.legendRendererInfo.Font);
if (leri.seriesRendererInfo.series.chartType == ChartType.Line)
{
leri.MarkerSize.Width = leri.seriesRendererInfo.markerRendererInfo.MarkerSize.Value;
leri.MarkerArea.Width = Math.Max(3 * leri.MarkerSize.Width, leri.MarkerArea.Width);
}
leri.MarkerArea.Height = Math.Min(leri.MarkerArea.Height, leri.TextSize.Height);
leri.MarkerSize.Height = Math.Min(leri.MarkerSize.Height, leri.TextSize.Height);
leri.Width = leri.TextSize.Width + leri.MarkerArea.Width + SpacingBetweenMarkerAndText;
leri.Height = leri.TextSize.Height;
}
}
/// <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>
/// Draws one legend entry.
/// </summary>
internal override void Draw()
{
XGraphics gfx = this.rendererParms.Graphics;
LegendEntryRendererInfo leri = (LegendEntryRendererInfo)this.rendererParms.RendererInfo;
XRect rect;
if (leri.seriesRendererInfo.series.chartType == ChartType.Line)
{
// Draw line.
XPoint posLineStart = new XPoint(leri.X, leri.Y + leri.Height / 2);
XPoint posLineEnd = new XPoint(leri.X + leri.MarkerArea.Width, leri.Y + leri.Height / 2);
gfx.DrawLine(new XPen(((XSolidBrush)leri.MarkerBrush).Color), posLineStart, posLineEnd);
// Draw marker.
double x = leri.X + leri.MarkerArea.Width / 2;
XPoint posMarker = new XPoint(x, leri.Y + leri.Height / 2);
MarkerRenderer.Draw(gfx, posMarker, leri.seriesRendererInfo.markerRendererInfo);
}
else
{
// Draw series rectangle for column, bar or pie charts.
rect = new XRect(leri.X, leri.Y, leri.MarkerArea.Width, leri.MarkerArea.Height);
rect.Y += (leri.Height - leri.MarkerArea.Height) / 2;
gfx.DrawRectangle(leri.MarkerPen, leri.MarkerBrush, rect);
}
// Draw text
if (leri.EntryText.Length > 0)
{
rect = leri.Rect;
rect.X += leri.MarkerArea.Width + LegendEntryRenderer.SpacingBetweenMarkerAndText;
XStringFormat format = new XStringFormat();
format.LineAlignment = XLineAlignment.Near;
gfx.DrawString(leri.EntryText, leri.legendRendererInfo.Font,
leri.legendRendererInfo.FontColor, rect, format);
}
}
