Пример #1
0
        public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
        {
            if (Bars == null)
            {
                return;
            }

            byte bRed   = (byte)~(ChartControl.BackColor.R);
            byte bGreen = (byte)~(ChartControl.BackColor.G);
            byte bBlue  = (byte)~(ChartControl.BackColor.B);

            Color borderColor = Color.FromArgb(bRed, bGreen, bBlue);

            if (lineWidth > 0)
            {
                // draw back lines
                Pen    linePen   = new Pen(lineBrush, lineWidth);
                double lineSpace = 100;

                {
                    double y = (bounds.Y + bounds.Height) - ((0 - min) / ChartControl.MaxMinusMin(max, min)) * bounds.Height;
                    graphics.DrawLine(linePen, ChartControl.CanvasLeft, (int)y, ChartControl.CanvasRight, (int)y);
                }
                while (max > lineSpace || min < lineSpace * -1)
                {
                    double y = (bounds.Y + bounds.Height) - ((lineSpace - min) / ChartControl.MaxMinusMin(max, min)) * bounds.Height;
                    graphics.DrawLine(linePen, ChartControl.CanvasLeft, (int)y, ChartControl.CanvasRight, (int)y);
                    y = (bounds.Y + bounds.Height) - (((lineSpace * -1) - min) / ChartControl.MaxMinusMin(max, min)) * bounds.Height;
                    graphics.DrawLine(linePen, ChartControl.CanvasLeft, (int)y, ChartControl.CanvasRight, (int)y);

                    lineSpace += 100;
                }
            }

            int bars          = ChartControl.BarsPainted;
            int barPaintWidth = ChartControl.ChartStyle.GetBarPaintWidth(ChartControl.BarWidth);

            if (ChartControl.LastBarPainted - ChartControl.BarsPainted + 1 + bars - Bars.Count != 0)
            {
                bars--;
            }

            while (bars >= 0)
            {
                int index = ((ChartControl.LastBarPainted - ChartControl.BarsPainted) + 1) + bars;

                if (ChartControl.ShowBarsRequired || index - Displacement >= BarsRequired)
                {
                    try
                    {
                        double cciVal = CciPlot.Get(index);
                        int    x      = (((ChartControl.CanvasRight - ChartControl.BarMarginRight) - (barPaintWidth / 2)) -
                                         ((ChartControl.BarsPainted - 1) * ChartControl.BarSpace)) + (bars * ChartControl.BarSpace);
                        int y1 = (bounds.Y + bounds.Height) - ((int)(((cciVal - min) / ChartControl.MaxMinusMin(max, min)) * bounds.Height));

                        double alertVal = dotSeries.Get(index);

                        if (!double.IsNaN(alertVal) && !double.IsNaN(cciVal))
                        {
                            int y = (bounds.Y + bounds.Height) - ((int)(((0 - min) / ChartControl.MaxMinusMin(max, min)) * bounds.Height));

                            Color dotColor = Color.Transparent;

                            if (Math.Abs(1 - alertVal) < double.Epsilon)
                            {
                                dotColor = ChartControl.ChartStyle.UpColor;
                            }
                            else if (Math.Abs(-1 - alertVal) < double.Epsilon)
                            {
                                dotColor = ChartControl.ChartStyle.DownColor;
                            }
                            else if (Math.Abs(2 - alertVal) < double.Epsilon)
                            {
                                dotColor = Color.Gray;
                            }

                            if (dotColor != Color.Transparent)
                            {
                                int barOffset = (int)((double)(barWidth - 1) / 2);

                                // draw bars
                                if (y1 - y > 0)
                                {
                                    graphics.FillRectangle(new SolidBrush(dotColor), x - barOffset, y, barWidth, y1 - y);
                                }
                                else
                                {
                                    graphics.FillRectangle(new SolidBrush(dotColor), x - barOffset, y1, barWidth, y - y1);
                                }

                                if (showDots)
                                {
                                    // draw dots
                                    SmoothingMode smoothingMode = graphics.SmoothingMode;
                                    graphics.SmoothingMode = SmoothingMode.AntiAlias;

                                    Pen pen = new Pen(borderColor, 7)
                                    {
                                        DashStyle = DashStyle.Dot, DashCap = DashCap.Round
                                    };
                                    graphics.DrawPie(pen, x - 1, y, 2, 2, 0, 360);
                                    pen = new Pen(dotColor, 5)
                                    {
                                        DashStyle = DashStyle.Dot, DashCap = DashCap.Round
                                    };
                                    graphics.DrawRectangle(pen, x - 2, y - 1, 2, 2);
                                    graphics.SmoothingMode = smoothingMode;
                                }
                            }
                        }
                    }
                    catch (Exception)
                    {
                    }
                }
                bars--;
            }

            // Default plotting in base class.
            base.Plot(graphics, bounds, min, max);
        }