/// <summary>
/// Returns all elements located at the given point in client coordinates
/// </summary>
/// <param name="p">Client coordinates.</param>
/// <returns>Elements at given point, or null if none exists.</returns>
private Mark MarkAt(Point p)
{
// First figure out which row we are in
MarkRow containingRow = RowAt(p);
if (containingRow == null)
{
return(null);
}
// Now figure out which element we are on
foreach (Mark mark in containingRow)
{
Single x = timeToPixels(mark.StartTime);
if (x > p.X)
{
break; //The rest of them are beyond our point.
}
Single width = timeToPixels(mark.Duration);
MarkRow.MarkStack ms = containingRow.GetStackForMark(mark);
var displayHeight = containingRow.Height / containingRow.StackCount;
var rowTopOffset = displayHeight * ms.StackIndex;
if (p.X >= x &&
p.X <= x + width &&
p.Y >= containingRow.DisplayTop + rowTopOffset &&
p.Y < containingRow.DisplayTop + rowTopOffset + displayHeight)
{
return(mark);
}
}
return(null);
}
private void DrawMark(Graphics g, MarkRow row, IMark mark, int top, Brush b)
{
int width;
//Sanity check - it is possible for .DisplayHeight to become zero if there are too many marks stacked.
//We set the DisplayHeight to the row height for the mark, and change the border to red.
var markStack = row.GetStackForMark(mark);
var displayHeight =
(markStack.StackCount > 1) ? ((row.Height - 2) / row.StackCount) : row.Height - 2;
var displayTop = top + displayHeight * markStack.StackIndex;
if (displayHeight == 0)
{
displayHeight = row.Height;
}
width = (int)timeToPixels(mark.Duration);
if (width <= 0)
{
return;
}
Size size = new Size(width, displayHeight);
Point finalDrawLocation = new Point((int)Math.Floor(timeToPixels(mark.StartTime)), displayTop);
Rectangle destRect = new Rectangle(finalDrawLocation.X, finalDrawLocation.Y, size.Width, displayHeight);
g.FillRectangle(b, destRect);
var isSelected = _marksSelectionManager.SelectedMarks.Contains(mark);
using (Pen bp = new Pen(Color.Black, isSelected?3:1))
{
g.DrawRectangle(bp, destRect);
}
if (isSelected)
{
using (Pen bp = new Pen(ThemeColorTable.ForeColor, 1))
{
bp.Alignment = PenAlignment.Inset;
bp.DashPattern = new [] { 1.0F, 2.0F };
g.DrawRectangle(bp, destRect);
}
}
//Draw the text
SolidBrush drawBrush = new SolidBrush(IdealTextColor(row.MarkDecorator.Color));
StringFormat drawFormat = new StringFormat();
g.DrawString(mark.Text, _textFont, drawBrush, destRect, drawFormat);
}
/// <summary>
/// Returns the row located at the current point in client coordinates
/// </summary>
/// <param name="p">Client coordinates.</param>
/// <returns>Row at given point, or null if none exists.</returns>
private MarkRow RowAt(Point p)
{
MarkRow containingRow = null;
int curheight = 0;
foreach (MarkRow row in _rows.Where(x => x.Visible))
{
if (p.Y < curheight + row.Height)
{
containingRow = row;
break;
}
curheight += row.Height;
}
return(containingRow);
}
private void CreateMarkRow(IMarkCollection markCollection)
{
MarkRow row = new MarkRow(markCollection);
_rows.Add(row);
}