public ChartCanvas(RectangleF rect)
: base(rect)
{
ContentMode = UIViewContentMode.Redraw;
this.AutoresizingMask = UIViewAutoresizing.All;
this.BackColor = Color.Wheat;
PlotPanel = new PlotPanel(rect);
this.AddSubview(PlotPanel);
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint +=
new PaintEventHandler(PlotPanelPaint);
cs = new ChartStyle(this);
dc = new DataCollection(this);
// Specify chart style parameters:
cs.Title = "Chart of GE Stock";
cs.XTickOffset = 1;
cs.XLimMin = -1f;
cs.XLimMax = 20f;
cs.YLimMin = 32f;
cs.YLimMax = 36f;
cs.XTick = 2f;
cs.YTick = 0.5f;
dc.StockChartType = DataCollection.StockChartTypeEnum.Candle;
}
public ChartCanvas(RectangleF rect) : base(rect)
{
ContentMode = UIViewContentMode.Redraw;
this.AutoresizingMask = UIViewAutoresizing.All;
this.BackColor = Color.Wheat;
PlotPanel = new PlotPanel(rect);
this.AddSubview(PlotPanel);
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint +=
new PaintEventHandler(PlotPanelPaint);
cs = new ChartStyle(this);
dc = new DataCollection(this);
// Specify chart style parameters:
cs.Title = "Chart of GE Stock";
cs.XTickOffset = 1;
cs.XLimMin = -1f;
cs.XLimMax = 20f;
cs.YLimMin = 32f;
cs.YLimMax = 36f;
cs.XTick = 2f;
cs.YTick = 0.5f;
dc.StockChartType = DataCollection.StockChartTypeEnum.Candle;
}
public void AddStockChart(Graphics g, ChartStyle cs)
{
foreach (DataSeries ds in DataSeriesList) {
Pen aPen = new Pen (ds.LineStyle.LineColor, ds.LineStyle.Thickness);
aPen.DashStyle = ds.LineStyle.Pattern;
SolidBrush aBrush = new SolidBrush (ds.LineStyle.LineColor);
SolidBrush whiteBrush = new SolidBrush (Color.White);
float barLength = form1.PlotPanel.Width / (5 * ds.DataString.GetLength (1));
for (int i = 0; i < ds.DataString.GetLength(1); i++) {
float[] stockdata = new float[4];
for (int j = 0; j < stockdata.Length; j++) {
stockdata [j] = Convert.ToSingle (ds.DataString [j + 1, i]);
}
PointF ptHigh = cs.Point2D (new PointF (i, stockdata [1]));
PointF ptLow = cs.Point2D (new PointF (i, stockdata [2]));
PointF ptOpen = cs.Point2D (new PointF (i, stockdata [0]));
PointF ptCLose = cs.Point2D (new PointF (i, stockdata [3]));
PointF ptOpen1 = new PointF (ptOpen.X - barLength, ptOpen.Y);
PointF ptClose1 = new PointF (ptCLose.X + barLength, ptCLose.Y);
PointF ptOpen2 = new PointF (ptOpen.X + barLength, ptOpen.Y);
PointF ptClose2 = new PointF (ptCLose.X - barLength, ptCLose.Y);
// Draw Hi-Lo stock chart:
if (StockChartType == StockChartTypeEnum.HiLo) {
g.DrawLine (aPen, ptHigh, ptLow);
}
// Draw Hi-Li-Open-Close chart:
else if (StockChartType == StockChartTypeEnum.HiLoOpenClose) {
g.DrawLine (aPen, ptHigh, ptLow);
g.DrawLine (aPen, ptOpen, ptOpen1);
g.DrawLine (aPen, ptCLose, ptClose1);
}
// Draw candle chart:
else if (stockChartType == StockChartTypeEnum.Candle) {
PointF[] pts = new PointF[4];
pts [0] = ptOpen1;
pts [1] = ptOpen2;
pts [2] = ptClose1;
pts [3] = ptClose2;
g.DrawLine (aPen, ptHigh, ptLow);
if (stockdata [0] > stockdata [3]) {
g.FillPolygon (aBrush, pts);
} else if (stockdata [0] < stockdata [3]) {
g.FillPolygon (whiteBrush, pts);
}
g.DrawPolygon (aPen, pts);
}
}
aPen.Dispose ();
aBrush.Dispose ();
whiteBrush.Dispose ();
}
}
public void AddStockChart(Graphics g, ChartStyle cs)
{
foreach (DataSeries ds in DataSeriesList)
{
Pen aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.Thickness);
aPen.DashStyle = ds.LineStyle.Pattern;
SolidBrush aBrush = new SolidBrush(ds.LineStyle.LineColor);
SolidBrush whiteBrush = new SolidBrush(Color.White);
float barLength = form1.PlotPanel.Width / (5 * ds.DataString.GetLength(1));
for (int i = 0; i < ds.DataString.GetLength(1); i++)
{
float[] stockdata = new float[4];
for (int j = 0; j < stockdata.Length; j++)
{
stockdata [j] = Convert.ToSingle(ds.DataString [j + 1, i]);
}
PointF ptHigh = cs.Point2D(new PointF(i, stockdata [1]));
PointF ptLow = cs.Point2D(new PointF(i, stockdata [2]));
PointF ptOpen = cs.Point2D(new PointF(i, stockdata [0]));
PointF ptCLose = cs.Point2D(new PointF(i, stockdata [3]));
PointF ptOpen1 = new PointF(ptOpen.X - barLength, ptOpen.Y);
PointF ptClose1 = new PointF(ptCLose.X + barLength, ptCLose.Y);
PointF ptOpen2 = new PointF(ptOpen.X + barLength, ptOpen.Y);
PointF ptClose2 = new PointF(ptCLose.X - barLength, ptCLose.Y);
// Draw Hi-Lo stock chart:
if (StockChartType == StockChartTypeEnum.HiLo)
{
g.DrawLine(aPen, ptHigh, ptLow);
}
// Draw Hi-Li-Open-Close chart:
else if (StockChartType == StockChartTypeEnum.HiLoOpenClose)
{
g.DrawLine(aPen, ptHigh, ptLow);
g.DrawLine(aPen, ptOpen, ptOpen1);
g.DrawLine(aPen, ptCLose, ptClose1);
}
// Draw candle chart:
else if (stockChartType == StockChartTypeEnum.Candle)
{
PointF[] pts = new PointF[4];
pts [0] = ptOpen1;
pts [1] = ptOpen2;
pts [2] = ptClose1;
pts [3] = ptClose2;
g.DrawLine(aPen, ptHigh, ptLow);
if (stockdata [0] > stockdata [3])
{
g.FillPolygon(aBrush, pts);
}
else if (stockdata [0] < stockdata [3])
{
g.FillPolygon(whiteBrush, pts);
}
g.DrawPolygon(aPen, pts);
}
}
aPen.Dispose();
aBrush.Dispose();
whiteBrush.Dispose();
}
}