private void ResetGraphics()
{
graphics.Clear(BackgroundColor);
graphics.TranslateTransform(this.autoScrollPosition.X, this.autoScrollPosition.Y);
DayXLocations.Clear();
TimeXLocations.Clear();
}
private void PopulateDateTimeXLocs(int startX, int endX)
{
int dayDivision = (int)Math.Round((double)(endX - startX) / (EndDate - StartDate).Days);
int dayXLoc = startX;
DateTime curDay = StartDate;
while (curDay < EndDate)
{
int dayStart = dayXLoc;
int dayEnd = dayXLoc + dayDivision;
int timeDivision = (int)Math.Round((double)(dayEnd - dayStart) / (EndHourInDay - StartHourInDay));
int xLoc = dayStart;
int curHour = StartHourInDay;
while (curHour <= EndHourInDay)
{
DateTime dateWithHour = curDay.AddHours(curHour);
if (curHour == StartHourInDay)
{
StringFormat startFormat = new StringFormat()
{
Alignment = StringAlignment.Near, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, dayStart, startFormat));
}
else if (curHour == EndHourInDay)
{
StringFormat endFormat = new StringFormat()
{
Alignment = StringAlignment.Far, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, dayEnd, endFormat));
}
else
{
xLoc += timeDivision;
StringFormat otherFormat = new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, xLoc, otherFormat));
}
curHour++;
}
DayXLocations.Add(new Tuple <DateTime, int, int>(curDay, dayStart, dayEnd));
dayXLoc = dayEnd;
curDay = curDay.AddDays(1);
}
}
private int GetXLocationForTime(DateTime dateAndTime)
{
Tuple <DateTime, int, StringFormat> foundGroup = TimeXLocations.Find(p => p.Item1 == dateAndTime);
if (foundGroup != null)
{
return(foundGroup.Item2);
}
else
{
return(-1);
}
}
private void DrawNowIndicator(int startY, int endY)
{
if (!ShowNowIndicator ||
Rows.Count == 0 || //No rows
!Rows.Any(p => p.TimeBlocks.Count > 0 && p.IsVisible)) //No timeblocks (and isn't invisible)
{
return;
}
DateTime now = DateTime.Now;
now = now.AddHours(NowIndicatorHourOffset);
//Ensure that "now" should be visible on chart
if (now.Hour < StartHourInDay ||
now.Hour > EndHourInDay ||
now < StartDate ||
now > EndDate)
{
return;
}
Tuple <DateTime, int, StringFormat> timeBehind = TimeXLocations.LastOrDefault(p => p.Item1 <= now);
Tuple <DateTime, int, StringFormat> timeAhead = TimeXLocations.FirstOrDefault(p => p.Item1 >= now);
double percentageOfTimeBlock = (double)(now.Ticks - timeBehind.Item1.Ticks) / (timeAhead.Item1.Ticks - timeBehind.Item1.Ticks);
int nowXLoc = (int)Math.Round(percentageOfTimeBlock * (timeAhead.Item2 - timeBehind.Item2) + timeBehind.Item2);
//Draw line
Point topPoint = new Point(nowXLoc, startY);
Point bottomPoint = new Point(nowXLoc, endY);
graphics.DrawLine(new Pen(Color.Red), topPoint, bottomPoint);
//Draw top triangle
Point t1 = new Point(topPoint.X - 5, topPoint.Y);
Point t2 = new Point(topPoint.X + 5, topPoint.Y);
Point t3 = new Point(topPoint.X, topPoint.Y + 10);
graphics.FillPolygon(new SolidBrush(Color.Red), new[] { t1, t2, t3 });
//Draw bottom triangle
Point b1 = new Point(bottomPoint.X - 5, bottomPoint.Y);
Point b2 = new Point(bottomPoint.X + 5, bottomPoint.Y);
Point b3 = new Point(bottomPoint.X, bottomPoint.Y - 10);
graphics.FillPolygon(new SolidBrush(Color.Red), new[] { b1, b2, b3 });
}
