protected internal CandleMidLineElement(CandleMidLineView view, PlotPane host, Point[] points) : base(host)
{
m_View = view;
m_Points = points;
this.Region = new Rectangle(points[0].X, 0, points[points.Length - 1].X, host.Height);
}
protected override Elements.Element MakeSampleElement(TimeSeriesChart chart, PlotPane pane, CandleSample sample, int x, float minScale, float maxScale)
{
var elm = new CandleElement(pane, sample, x, minScale, maxScale, BlackWhite);
if (ShowBalloons)
{
elm.MouseClick += elm_MouseClick;
}
return(elm);
}
protected internal YLevelElement(PlotPane host, TimeSeries.YLevel level, float minScale, float maxScale) : base(host)
{
m_Level = level;
// m_Style = new Style(null, getBaseStyle());
m_ScaleMin = minScale;
m_ScaleMax = maxScale;
computeCoords();
this.Region = new Rectangle(0, m_Y - 2, host.Width, m_Y + 2);
}
protected internal CandleBuySellElement(CandleBuySellView view, PlotPane host, CandleSample sample, int x, float minScale, float maxScale) : base(host)
{
m_View = view;
m_Sample = sample;
m_ScaleMin = minScale;
m_ScaleMax = maxScale;
computeCoords();
var h = Math.Max(m_Lay_BuyHeight, m_Lay_SellHeight);
this.Region = new Rectangle(x, (int)(host.Height / host.Zoom) - h, CandleView.BAR_WIDTH, h);
}
protected internal CandleElement(PlotPane host, CandleSample candle, int x, float minScale, float maxScale, bool bw) : base(host)
{
Candle = candle;
// m_Style = new Style(null, getBaseStyle());
m_ScaleMin = minScale;
m_ScaleMax = maxScale;
m_Lay_X = x;
m_Lay_W = CandleView.BAR_WIDTH - 1;
computeCoords();
this.Region = new Rectangle(m_Lay_X, m_Lay_Y, m_Lay_W, m_Lay_H);
m_BW = bw;
}
protected internal virtual void OnChartPaneMouseEvent(
ChartPaneMouseEventArgs.MouseEventType et, PlotPane senderPane, MouseEventArgs mouse)
{
if (this.ChartPaneMouseEvent == null)
{
return;
}
var sample = MapXToSample(mouse.X);
var value = MapPaneYToValue(senderPane, mouse.Y);
var args = new ChartPaneMouseEventArgs(et, this, senderPane, mouse, sample, value);
ChartPaneMouseEvent(this, args);
}
internal ChartPaneMouseEventArgs(MouseEventType type,
TimeSeriesChart chart,
PlotPane pane,
MouseEventArgs mouse,
ITimeSeriesSample sample,
float value)
{
this.EventType = type;
this.Chart = chart;
this.Pane = pane;
this.MouseEvent = mouse;
this.SampleAtX = sample;
this.ValueAtY = value;
}
/// <summary>
/// Maps mouse Y coordinate per pane's vertical scale value
/// </summary>
public float MapPaneYToValue(PlotPane pane, int y)
{
if (pane == null)
{
throw new WFormsException(StringConsts.ARGUMENT_ERROR +
"MapPaneYToValue(pane==null)");
}
if (pane.Chart != this)
{
throw new WFormsException(StringConsts.ARGUMENT_ERROR +
"MapPaneYToValue(pane.Chart!=this)");
}
var pp = (pane.VRulerMaxScale - pane.VRulerMinScale) /
(float)(pane.Height == 0 ? 1 : pane.Height);
return(pane.VRulerMaxScale - (y * pp));
}
protected override Element MakeSeriesElement(TimeSeriesChart chart,
PlotPane pane,
IEnumerable <CandleSample> data,
int xStart,
float minScale,
float maxScale,
int maxSampleWidth,
out int fitSamplesCount)
{
var points = new List <Point>();
var pxTotalHeight = (int)(pane.Height / pane.Zoom);
var pxPrice = (float)pxTotalHeight / (maxScale - minScale);
fitSamplesCount = 0;
var x = xStart + (maxSampleWidth / 2);
var xcutof = chart.VRulerPosition == VRulerPosition.Right ? pane.Width - 1 - chart.VRulerWidth : pane.Width;
foreach (var candle in data)
{
var midPrice = MidLineType == Temporal.MidLineType.HighLow ?
(candle.LowPrice + ((candle.HighPrice - candle.LowPrice) / 2f)) :
(Math.Min(candle.OpenPrice, candle.ClosePrice) + (Math.Abs(candle.OpenPrice - candle.ClosePrice) / 2f));
var y = pxTotalHeight - (int)((midPrice - minScale) * pxPrice);
points.Add(new Point(x, y));
x += maxSampleWidth;
x++;
if ((x * pane.Zoom) >= xcutof)
{
break;
}
fitSamplesCount++;
}
return(new CandleMidLineElement(this, pane, points.ToArray()));
}
protected override Elements.Element MakeSampleElement(TimeSeriesChart chart, PlotPane pane, CandleSample sample, int x, float minScale, float maxScale)
{
return(null);
}
/// <summary> /// Override to build elements that render the data by adding drawable elements to the chart. /// Returns how many samples could fit /// </summary> public abstract int BuildElements(TimeSeriesChart chart, PlotPane pane, TimeSeries series, int maxSampleWidth);
protected override Elements.Element MakeSampleElement(TimeSeriesChart chart, PlotPane pane, CandleSample sample, int x, float minScale, float maxScale)
{
return(new CandleBuySellElement(this, pane, sample, x, minScale, maxScale));
}
private void buildPanesCore()
{
if (m_Series == null || m_NeedRebuildPanes)
{
foreach (var ctl in m_Panes)
{
m_ChartPanel.Controls.Remove(ctl);
ctl.Dispose();
}
m_Panes.Clear();
//todo ubit shkalu X vnizy
if (m_Series == null)
{
return;
}
}
var paneNames = m_Series.GetPaneNames().ToArray();
//1. Delete panes that are no longer in series
var toDelete = m_Panes.Select(p => p.Name).Except(paneNames);
foreach (var pn in toDelete)
{
var ctl = m_Panes[pn];
if (ctl != null)
{
m_Panes.Unregister(ctl);
m_ChartPanel.Controls.Remove(ctl);
ctl.Dispose();
}
}
var totPanes = paneNames.Length;
var i = 0;
int controlHeight = m_ChartPanel.Height;
PlotPane lastPane = null;
//2. Add panes
foreach (var pn in paneNames.Reverse())
{
var pane = m_Panes[pn];
if (pane != null)
{
pane.UpdateZoom(m_Zoom);
pane.DeleteAllElements(); //Clear the pane
if (lastPane == null)
{
lastPane = pane;
}
continue; //pane already exists
}
//Add pane
pane = new PlotPane(this, pn, m_Panes.Count + 1);
pane.TabStop = false;
pane.Cursor = Cursors.Cross;
pane.Height = (int)(controlHeight * GetPaneVProportion(pn));
SetPaneVProportion(pn, pane.Height / (float)(controlHeight > 0 ? controlHeight : 1));
pane.Parent = m_ChartPanel;
pane.UpdateZoom(m_Zoom);
pane.Dock = DockStyle.Top;
lastPane = pane;
//ctl.BackColor = Color.HotPink;
m_Panes.Register(pane);
if (i < totPanes - 1)
{
// Build splitter
// pane.Dock = DockStyle.Top;
if (pane.m_Splitter != null)
{
continue;
}
pane.m_Splitter = new Splitter
{
Parent = m_ChartPanel,
Dock = DockStyle.Top,
Height = SPLITTER_HEIGHT,
BackColor = SplitterStyle.BGColor,
BorderStyle = BorderStyle.FixedSingle
};
//this.Controls.SetChildIndex(pane.m_Splitter, this.Controls.GetChildIndex(pane));
//todo Splitter moving - suspend update?
pane.m_Splitter.SplitterMoved += delegate(object sender, SplitterEventArgs e)
{
this.NotifySeriesChange(false);
int height = m_ChartPanel.Height;
foreach (var p in m_Panes)
{
SetPaneVProportion(p.Name, p.Height / (float)(height > 0 ? height : 1));
}
};
}
}
// This must be the last Dock command
if (lastPane != null)
{
lastPane.Dock = DockStyle.Fill;
}
}
