/// <summary>
/// Overwrites whole line at index of row
/// </summary>
/// <param name="canvas"></param>
/// <param name="text"></param>
/// <param name="row"></param>
/// <param name="rightAligned"></param>
public static void WriteLine(this TextCanvas canvas, string text, int?row = null, bool rightAligned = false)
{
row = row ?? canvas.CurrentRow;
if (row.Value < 0 || row.Value > canvas.ContentHeight)
{
throw new ArgumentOutOfRangeException(nameof(row), row.Value, "Given row is out of range");
}
#region Line-wrapping Logic
if (text.Length > canvas.ContentWidth)
{
List <string> rows = FoldText(text, canvas.ContentWidth);
rows.Last().Fill(canvas.ContentWidth, FillOptions.Default | FillOptions.OverwriteBaseString);
if (rightAligned)
{
foreach (var rowString in rows)
{
for (int i = rowString.Length - 1, j = 0; i >= 0; i--, j++)
{
canvas.SetCursorPosition(canvas.ContentWidth - j, row.Value + rows.IndexOf(rowString));
Console.Write(rowString[i]);
}
}
return;
}
foreach (var rowString in rows)
{
canvas.SetCursorPosition(0, row.Value + rows.IndexOf(rowString));
Console.Write(rowString);
}
return;
}
#endregion
if (rightAligned)
{
for (int i = text.Length - 1, j = 0; i >= 0 && j < canvas.ContentWidth; i--, j++)
{
canvas.SetCursorPosition(canvas.ContentWidth - j, row.Value);
Console.Write(text[i]);
}
return;
}
canvas.SetCursorPosition(0, row.Value);
Console.Write(text);
canvas.CurrentRow++;
}
public static void Clear(this TextCanvas canvas, int?rowIndex = null)
{
canvas.CurrentRow = 0;
if (rowIndex == null)
{
for (int y = 0; y < canvas.ContentHeight; y++)
{
canvas.SetCursorPosition(0, y);
Console.Write(CharacterMap.Space.Repeat(canvas.ContentWidth));
}
return;
}
// validation
if (rowIndex.Value > canvas.ContentHeight || rowIndex.Value < 0)
{
throw new ArgumentOutOfRangeException(nameof(rowIndex), "Row index cannot overflow canvas's height");
}
canvas.SetCursorPosition(0, rowIndex.Value);
Console.Write(CharacterMap.Space.Repeat(canvas.ContentWidth));
}
/// <summary>
/// Writes text on 1 line, does not handle Line-wrapping
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">Is thrown if text would overflow from canvas</exception>
/// <param name="canvas"></param>
/// <param name="text"></param>
/// <param name="row">Row of "Visible Content"</param>
public static void Write(this TextCanvas canvas, string text, int?row = null)
{
row = row ?? canvas.CurrentRow;
int widthIndex = canvas.ScreenBuffer[row.Value].Length;
// Line-wrapping
if (widthIndex + text.Length > canvas.ContentWidth)
{
throw new ArgumentOutOfRangeException(nameof(text), "Text Overflow");
}
canvas.SetCursorPosition(
widthIndex,
row.Value);
Console.Write(text);
}