private void DoDrawGrid(GraphicsEx g, Pen pen, RectF area)
{
foreach (var element in m_currentState.XPhysicalDashes)
{
float x = g.TransformX(element.X);
float y = g.TransformY(element.Y);
g.DrawLine(pen, x, y, x, 0);
}
foreach (var element in m_currentState.YPhysicalDashes)
{
float x = g.TransformX(element.X);
float y = g.TransformY(element.Y);
g.DrawLine(pen, 0, y, x, y);
}
}
private void DoDrawAxes(GraphicsEx g, Pen pen, Brush brush, RectF area)
{
float w = (float)this.Width;
float h = (float)this.Height;
g.DrawLine(pen, 0, h - cBottomOffset, w, h - cBottomOffset);
g.DrawLine(pen, w - cArrowOffset, h - cBottomOffset - cArrowOffset / 2, w, h - cBottomOffset);
g.DrawLine(pen, w - cArrowOffset, h - cBottomOffset + cArrowOffset / 2, w, h - cBottomOffset);
foreach(var element in m_currentState.XPhysicalDashes)
{
float x = g.TransformX(element.X);
float y = g.TransformY(element.Y);
g.DrawLine(pen, x, y - cArrowSize, x, y + cArrowSize);
g.DrawString(element.X.ToString(), this.Font, brush, x - cLeftOffset, y + cBottomOffset / 3);
}
g.DrawLine(pen, w - cRightOffset, 0, w - cRightOffset, h);
g.DrawLine(pen, w - cRightOffset - cArrowOffset / 2, cArrowOffset, w - cRightOffset, 0);
g.DrawLine(pen, w - cRightOffset + cArrowOffset / 2, cArrowOffset, w - cRightOffset, 0);
foreach (var element in m_currentState.YPhysicalDashes)
{
float x = g.TransformX(element.X);
float y = g.TransformY(element.Y);
g.DrawLine(pen, x - cArrowSize, y, x + cArrowSize, y);
g.DrawString(element.Y.ToString(m_parameters.PriceFormat), this.Font, brush, x, y + +cBottomOffset / 3);
}
}
private void DoDrawData(GraphicsEx g)
{
m_currentState.Refresh(m_settings);
RectF area = m_currentState.PhysicalArea;
float w = (float)this.Width - cLeftOffset - cRightOffset;
float h = (float)this.Height - cBottomOffset - cTopOffset;
float kx = w / area.Width;
float ky = h / area.Height;
RectF physical = area;
RectF logical = new RectF(cLeftOffset, cTopOffset, cLeftOffset + w, cTopOffset + h);
g.Physical = physical;
g.Logical = logical;
int count = m_currentState.Graphs.Count;
for (int index = 0; index < count; ++index)
{
Graph graph = m_currentState.Graphs[index];
Color bidColor = m_settings.Lines[index].BidColor;
Color askColor = m_settings.Lines[index].AskColor;
DrawLine(g, graph, bidColor, askColor);
}
using (Pen pen = new Pen(m_settings.ForegroundColor))
{
using (Brush brush = new SolidBrush(m_settings.ForegroundColor))
{
DoDrawAxes(g, pen, brush, area);
}
if (m_settings.Grid)
{
pen.DashPattern = new float[] { 10, 10 };
pen.Width = 0.5F;
DoDrawGrid(g, pen, area);
}
}
}
private void CalculateArea()
{
RectF area = new RectF();
area.MinX = -(float)m_quotes.Interval;
float yMin = float.MaxValue;
float yMax = float.MinValue;
QuoteEx last = m_quotes.Last;
if (null != last.Quote)
{
yMin = (float)Math.Min(last.Quote.Bid, last.Quote.Ask);
yMax = (float)Math.Max(last.Quote.Bid, last.Quote.Ask);
}
foreach (var element in m_quotes.Items)
{
float bid = (float)element.Quote.Bid;
float ask = (float)element.Quote.Ask;
if (bid < yMin)
{
yMin = bid;
}
if (bid > yMax)
{
yMax = bid;
}
if (ask < yMin)
{
yMin = ask;
}
if (ask > yMax)
{
yMax = ask;
}
}
foreach (var element in Graphs)
{
float? min = element.CalculateMinimum();
float? max = element.CalculateMaximum();
if (min.HasValue)
{
yMin = Math.Min(yMin, min.Value);
}
if (max.HasValue)
{
yMax = Math.Max(yMax, max.Value);
}
}
area.MinY = (float)MathEx.RoundDown(yMin, m_parameters.RoundingStepOfPrice);
area.MaxY = (float)MathEx.RoundUp(yMax, m_parameters.RoundingStepOfPrice);
this.PhysicalArea = area;
}