protected void RenderLine(View view, int lineIndex, string line, ConsoleColor foregroundColor, ConsoleColor backgroundColor)
{
var textStart = Math.Min(view.LeftChar, line.Length);
var textLength = Math.Max(Math.Min(view.Width, line.Length - view.LeftChar), 0);
var text = textLength < 0 ? string.Empty : line.ToVisual(view.VisibleWhitespace).Substring(textStart, textLength);
var visualLine = lineIndex - view.TopLine + view.Top;
Vt100.SetCursorPosition(view.Left, visualLine);
Vt100.SetForegroundColor(foregroundColor);
Vt100.SetBackgroundColor(backgroundColor);
Vt100.EraseRestOfCurrentLine();
Console.Write(text);
if (view.SearchResults != null)
{
foreach (var hit in view.SearchResults.Hits)
{
if (hit.LineIndex == lineIndex)
{
var hitStart = Math.Min(Math.Max(hit.Start - view.LeftChar, 0), view.Width - 1) + view.LeftChar;
var hitEnd = Math.Min(Math.Max(hit.Start + hit.Length - view.LeftChar, 0), view.Width - 1) + view.LeftChar;
var hitLength = hitEnd - hitStart;
if (hitLength > 0)
{
Vt100.SetCursorPosition(hitStart - view.LeftChar, visualLine);
Vt100.NegativeColors();
Console.Write(line.Substring(hitStart, hitLength));
Vt100.PositiveColors();
}
}
}
}
}
private void Render()
{
var textLength = Math.Min(_text.Length, _width);
var text = _text.Substring(0, textLength);
Vt100.SetCursorPosition(_left, _top);
Vt100.SetForegroundColor(_foreground);
Vt100.SetBackgroundColor(_background);
Vt100.EraseRestOfCurrentLine();
Console.Write(text);
}
private void Search()
{
var sb = new StringBuilder();
while (true)
{
Vt100.HideCursor();
Vt100.SetCursorPosition(0, Console.WindowHeight - 1);
Vt100.SetForegroundColor(ConsoleColor.Blue);
Vt100.SetBackgroundColor(ConsoleColor.Gray);
Console.Write("/");
Vt100.EraseRestOfCurrentLine();
Console.Write(sb);
Vt100.ShowCursor();
var k = Console.ReadKey(intercept: true);
if (k.Key == ConsoleKey.Enter)
{
break;
}
else if (k.Key == ConsoleKey.Escape)
{
sb.Clear();
break;
}
else if (k.Key == ConsoleKey.Backspace)
{
if (sb.Length > 0)
{
sb.Length--;
}
}
else if (k.KeyChar >= 32)
{
sb.Append(k.KeyChar);
if (sb.Length == Console.WindowWidth - 1)
{
break;
}
}
}
Vt100.HideCursor();
UpdateFooter();
if (sb.Length == 0)
{
return;
}
var searchResults = new SearchResults(_view.Document, sb.ToString());
if (searchResults.Hits.Count == 0)
{
Vt100.HideCursor();
Vt100.SetCursorPosition(0, Console.WindowHeight - 1);
Vt100.SetForegroundColor(ConsoleColor.Blue);
Vt100.SetBackgroundColor(ConsoleColor.Gray);
Vt100.EraseRestOfCurrentLine();
Console.Write("<< NO RESULTS FOUND >>");
Console.ReadKey();
UpdateFooter();
return;
}
_view.SearchResults = searchResults;
_view.SelectedLine = searchResults.Hits.First().LineIndex;
}