/// <summary>
/// Draws the Legend and all entries into the area within <see cref="Bounds"/>
/// </summary>
/// <param name="graph"></param>
public void Render(GraphView graph)
{
if (Border)
{
graph.DrawFrame(Bounds, 0, true);
}
// start the legend at
int y = Bounds.Top + (Border ? 1 : 0);
int x = Bounds.Left + (Border ? 1 : 0);
// how much horizontal space is available for writing legend entries?
int availableWidth = Bounds.Width - (Border ? 2 : 0);
int availableHeight = Bounds.Height - (Border ? 2 : 0);
int linesDrawn = 0;
foreach (var entry in entries)
{
if (entry.Item1.Color.HasValue)
{
Application.Driver.SetAttribute(entry.Item1.Color.Value);
}
else
{
graph.SetDriverColorToGraphColor();
}
// add the symbol
graph.AddRune(x, y + linesDrawn, entry.Item1.Rune);
// switch to normal coloring (for the text)
graph.SetDriverColorToGraphColor();
// add the text
graph.Move(x + 1, y + linesDrawn);
string str = TextFormatter.ClipOrPad(entry.Item2, availableWidth - 1);
Application.Driver.AddStr(str);
linesDrawn++;
// Legend has run out of space
if (linesDrawn >= availableHeight)
{
break;
}
}
}
