internal void CmCalculateScale()
{
_viewCountBar = this.Width / this.DeltaX;
int dx = 64;
int countGLine = this.Width / dx;
_gridLines.Clear();
iBars ibars = this.Owner.Owner.iBars;
int bcount = this.Owner.Bars.Count;
for (int i = 0; i < countGLine; i++)
{
int x = i * dx;
int barIndex = this.Position + x;
string desc = "";
if (barIndex < bcount)
{
Bar bar = ibars.GetBar(barIndex);
if (i == 0)
{
desc = bar.Time.ToString("d MMM yyyy");
}
else
{
desc = bar.Time.ToString("d MMM ") + bar.Time.ToShortTimeString();
}
}
_gridLines.Add(new GridLine(barIndex, x, desc));
}
}
protected override void OnCalculateScale()
{
int countTick = this.Owner.Owner.Symbol.Ticks.Count;
int beginIndex = this.Owner.HorizontalScale.Position;
if (_savedCountTick == countTick && _savedPosition == beginIndex && _savedWidth == this.Owner.Width)
{
return;
}
_savedCountTick = countTick;
_savedPosition = beginIndex;
_savedWidth = this.Owner.Width;
int endIndex = beginIndex + this.Owner.HorizontalScale.CountBarView;
IBarsData bars = this.Owner.Owner.Bars;
int countBar = bars.Count;
endIndex = Math.Min(endIndex, countBar);
if (endIndex - beginIndex == 0)
{
return;
}
iBars ibars = this.Owner.Owner.iBars;
float min = float.MaxValue;
float max = float.MinValue;
for (int i = beginIndex; i < endIndex; i++)
{
Bar bar = ibars.GetBar(i);
min = Math.Min(bar.Low, min);
max = Math.Max(bar.High, max);
}
this.Owner.VerticalScale.SetScaleValue(min, max, this.Owner.Owner.Symbol.Digits);
}
protected override void OnPaint(ChartGraphics g)
{
int beginIndex = this.Owner.HorizontalScale.Position;
int endIndex = beginIndex + this.Owner.HorizontalScale.CountBarView;
IBarsData bars = this.Owner.Owner.Bars;
int countBar = bars.Count;
endIndex = Math.Min(endIndex, countBar);
g.SelectPen(this.Color);
GdiBrush brushUp = g.SelectBrush(ColorUp);
GdiBrush brushDown = g.SelectBrush(ColorDown);
int barWidth = 0;
switch (this.Owner.HorizontalScale.Zoom)
{
case ChartBox.ChartHorizontalScale.HorizontalZoom.Smaller:
case ChartBox.ChartHorizontalScale.HorizontalZoom.Small:
barWidth = 0;
break;
case ChartBox.ChartHorizontalScale.HorizontalZoom.Medium:
barWidth = 2;
break;
case ChartBox.ChartHorizontalScale.HorizontalZoom.Larger:
barWidth = 4;
break;
case ChartBox.ChartHorizontalScale.HorizontalZoom.Large:
barWidth = 10;
break;
case ChartBox.ChartHorizontalScale.HorizontalZoom.BigLarge:
barWidth = 24;
break;
}
iBars ibars = this.Owner.Owner.iBars;
for (int i = beginIndex; i < endIndex; i++)
{
Bar bar = ibars.GetBar(i);
int x = this.Owner.HorizontalScale.GetX(i);
int yLow = this.GetY(bar.Low);
int yHigh = this.GetY(bar.High);
if (_barsStyle != FigureBarsStyle.Line)
{
g.DrawLine(x, yLow, x, yHigh);
if (barWidth == 0)
{
continue;
}
int yClose = this.GetY(bar.Close);
int yOpen = this.GetY(bar.Open);
int barWD = barWidth / 2;
int x1 = x - barWD, h = 0, y = 0;
if (bar.Close > bar.Open)
{
h = yOpen - yClose;
y = yClose;
g.FillRectangleExt(brushUp, x1, y, barWidth, h);
}
else if (bar.Close < bar.Open)
{
h = yClose - yOpen;
y = yOpen;
g.FillRectangleExt(brushDown, x1, y, barWidth, h);
}
if (h > 0)
{
g.DrawRectangle(x1, y, barWidth, h);
}
}
else
{
}
}
}
