/// <summary> /// Draws the border around the plot area. /// </summary> internal override void Draw() { ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo; if (cri.plotAreaRendererInfo.LineFormat != null && cri.plotAreaRendererInfo.LineFormat.Width > 0) { XGraphics gfx = _rendererParms.Graphics; LineFormatRenderer lineFormatRenderer = new LineFormatRenderer(gfx, cri.plotAreaRendererInfo.LineFormat); lineFormatRenderer.DrawRectangle(cri.plotAreaRendererInfo.Rect); } }
/// <summary> /// Draws the content of the column plot area. /// </summary> internal override void Draw() { ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo; XRect plotAreaBox = cri.plotAreaRendererInfo.Rect; if (plotAreaBox.IsEmpty) { return; } XGraphics gfx = _rendererParms.Graphics; double xMin = cri.xAxisRendererInfo.MinimumScale; double xMax = cri.xAxisRendererInfo.MaximumScale; double yMin = cri.yAxisRendererInfo.MinimumScale; double yMax = cri.yAxisRendererInfo.MaximumScale; LineFormatRenderer lineFormatRenderer; // Under some circumstances it is possible that no zero base line will be drawn, // e. g. because of unfavourable minimum/maximum scale and/or major tick, so force to draw // a zero base line if necessary. if (cri.yAxisRendererInfo.MajorGridlinesLineFormat != null || cri.yAxisRendererInfo.MinorGridlinesLineFormat != null) { if (yMin < 0 && yMax > 0) { XPoint[] points = new XPoint[2]; points[0].X = xMin; points[0].Y = 0; points[1].X = xMax; points[1].Y = 0; cri.plotAreaRendererInfo._matrix.TransformPoints(points); lineFormatRenderer = cri.yAxisRendererInfo.MinorGridlinesLineFormat != null ? new LineFormatRenderer(gfx, cri.yAxisRendererInfo.MinorGridlinesLineFormat) : new LineFormatRenderer(gfx, cri.yAxisRendererInfo.MajorGridlinesLineFormat); lineFormatRenderer.DrawLine(points[0], points[1]); } } // Draw columns XGraphicsState state = gfx.Save(); foreach (SeriesRendererInfo sri in cri.seriesRendererInfos) { foreach (ColumnRendererInfo column in sri._pointRendererInfos) { // Do not draw column if value is outside yMin/yMax range. Clipping does not make sense. if (IsDataInside(yMin, yMax, column.Point._value)) { gfx.DrawRectangle(column.FillFormat, column.Rect); } } } // Draw borders around column. // A border can overlap neighbor columns, so it is important to draw borders at the end. foreach (SeriesRendererInfo sri in cri.seriesRendererInfos) { foreach (ColumnRendererInfo column in sri._pointRendererInfos) { // Do not draw column if value is outside yMin/yMax range. Clipping does not make sense. if (IsDataInside(yMin, yMax, column.Point._value) && column.LineFormat.Width > 0) { lineFormatRenderer = new LineFormatRenderer(gfx, column.LineFormat); lineFormatRenderer.DrawRectangle(column.Rect); } } } gfx.Restore(state); }