private void UpdateContent()
{
int lineHeight = Font.Height;
int scaleHeight = lineHeight / 2;
ClientSize = new Size(ClientSize.Width, (lineHeight * 4) + scaleHeight + (Gap * 6));
fList.Clear();
if (fRanges == null)
{
return;
}
int count = fRanges.Length;
fScaleWidth = Width - (LayoutPadding * 2) - (count - 1);
fRangesLength = 0.0;
foreach (var range in fRanges)
{
VRItem item = new VRItem();
item.Range = range;
item.Length = (range.Max - range.Min);
item.Brush = new SolidBrush(range.Color);
fList.Add(item);
fRangesLength += item.Length;
}
int x = LayoutPadding;
int y = (lineHeight + Gap) * 3;
for (int i = 0; i < count; i++)
{
var item = fList[i];
int itemWidth = (int)(fScaleWidth * (item.Length / fRangesLength));
item.Rect = new Rectangle(x, y, itemWidth, scaleHeight);
x += (itemWidth + 1);
}
fValuePos = LayoutPadding + (int)(fScaleWidth * (fValue / fRangesLength));
Invalidate();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (Width <= 0 || Height <= 0)
{
return;
}
Graphics gfx = e.Graphics;
int lineHeight = Font.Height;
var titleFont = new Font(Font, FontStyle.Bold);
gfx.DrawString(fTitle, titleFont, Brushes.Black, 0, 0);
fScaleFont = new Font(Font.FontFamily, Font.SizeInPoints * 0.8f);
int count = fList.Count;
if (count > 0)
{
string line = string.Format(ValuesFormat, fValue);
DrawText(gfx, Font, Brushes.Black, line, fValuePos, (lineHeight + Gap) * 1, -1);
line = "▼";
DrawText(gfx, Font, Brushes.Black, line, fValuePos, (lineHeight + Gap) * 2, -1);
int markersY = (lineHeight + Gap) * 3 + (lineHeight / 2 + Gap);
for (int i = 0; i < count; i++)
{
VRItem item = fList[i];
DrawRect(gfx, item.Rect, item.Brush);
if (i == 0)
{
double val = item.Range.Min;
line = string.Format(ValuesFormat, val);
float x = LayoutPadding + (int)(fScaleWidth * (val / fRangesLength));
DrawText(gfx, fScaleFont, Brushes.Black, line, x, markersY, 2);
}
else if (i == count - 1)
{
double val = item.Range.Min;
line = string.Format(ValuesFormat, val);
float x = LayoutPadding + (int)(fScaleWidth * (val / fRangesLength));
DrawText(gfx, fScaleFont, Brushes.Black, line, x, markersY, -1);
val = item.Range.Max;
line = string.Format(ValuesFormat, val);
x = LayoutPadding + (int)(fScaleWidth * (val / fRangesLength));
DrawText(gfx, fScaleFont, Brushes.Black, line, x, markersY, 3);
}
else
{
double val = item.Range.Min;
line = string.Format(ValuesFormat, val);
float x = LayoutPadding + (int)(fScaleWidth * (val / fRangesLength));
DrawText(gfx, fScaleFont, Brushes.Black, line, x, markersY, -1);
}
}
}
else
{
//DrawRect(gfx, 10, Width - 20, fEmptyBrush);
}
}