/// <summary>
/// Creates a <code>DrawCharacterSet</code> which uses single-lined box-drawing-characters
/// </summary>
/// <returns></returns>
public static DrawCharacterSet GetSingleLinesSet()
{
var set = new DrawCharacterSet
{
TopLeftCorner = '\u250C', // ┌
TopRightCorner = '\u2510', // ┐
BottomLeftCorner = '\u2514', // └
BottomRightCorner = '\u2518', // ┘
VerticalEdge = '\u2502', // │
HorizontalEdge = '\u2500', // ─
ConnectionHorizontalUp = '\u2534', // ┴
ConnectionHorizontalDown = '\u252C', // ┬
ConnectionVerticalRight = '\u251C', // ├
ConnectionVerticalLeft = '\u2524', // ┤
ConnectionCross = '\u253C', // ┼
Empty = ' '
};
return set;
}
/// <summary>
/// Creates a <code>DrawCharacterSet</code> which uses double-lined box-drawing-characters
/// </summary>
/// <returns></returns>
public static DrawCharacterSet GetDoubleLinesSet()
{
var set = new DrawCharacterSet
{
TopLeftCorner = '\u2554', // ╔
TopRightCorner = '\u2557', // ╗
BottomLeftCorner = '\u255A', // ╚
BottomRightCorner = '\u255D', // ╝
VerticalEdge = '\u2551', // ║
HorizontalEdge = '\u2550', // ═
ConnectionHorizontalUp = '\u2569', // ╩
ConnectionHorizontalDown = '\u2566', // ╦
ConnectionVerticalRight = '\u2560', // ╠
ConnectionVerticalLeft = '\u2563', // ╣
ConnectionCross = '\u256C', // ╬
Empty = ' '
};
return set;
}
/// <summary>
/// Creates a very simple <code>DrawCharacterSet</code>.
/// </summary>
/// <returns></returns>
public static DrawCharacterSet GetSimpleSet()
{
var set = new DrawCharacterSet
{
TopLeftCorner = '.',
TopRightCorner = '.',
BottomLeftCorner = '`',
BottomRightCorner = '´',
VerticalEdge = '|',
HorizontalEdge = '-',
ConnectionHorizontalUp = '+',
ConnectionHorizontalDown = '+',
ConnectionVerticalRight = '+',
ConnectionVerticalLeft = '+',
ConnectionCross = '+',
Empty = ' '
};
return set;
}
/// <summary>
/// Draws a box using the characters given in <paramref name="charSet"/>.
/// The box will be filled with characters if <paramref name="fill"/> is true,
/// this is a hugh performance plus if <paramref name="fColor"/> equals <paramref name="fFillColor"/> and <paramref name="bColor"/> equals <paramref name="bFillColor"/>.
/// </summary>
/// <param name="rect">The dimensions of the box</param>
/// <param name="charSet">The characters to use to draw the box</param>
/// <param name="boundary">The boundary to draw in, nothing will be drawn outside this area</param>
/// <param name="fColor">The foreground color of the edges</param>
/// <param name="bColor">The background color of the edges</param>
/// <param name="fill">true if the box should be filled, otherwise false</param>
/// <param name="fFillColor">The foreground color of the fill</param>
/// <param name="bFillColor">The background color of the fill</param>
public static void DrawBox(Rectangle rect, DrawCharacterSet charSet, Rectangle boundary = null,
ConsoleColor fColor = ConsoleColor.Gray, ConsoleColor bColor = ConsoleColor.Black,
bool fill = false, ConsoleColor fFillColor = ConsoleColor.Gray, ConsoleColor bFillColor = ConsoleColor.Black)
{
if(rect.Width == 0 || rect.Height == 0)
return;
#region Corners
var topLine = charSet.TopLeftCorner + new string(charSet.HorizontalEdge, rect.Width - 2) + charSet.TopRightCorner;
var bottomLine = charSet.BottomLeftCorner + new string(charSet.HorizontalEdge, rect.Width - 2) + charSet.BottomRightCorner;
if(boundary != null && topLine.Length + rect.Left > boundary.Left + boundary.Width)
{
var charsInside = boundary.Width - (rect.Left - boundary.Left);
topLine = topLine.Substring(0, charsInside);
bottomLine = bottomLine.Substring(0, charsInside);
}
Write(rect.Left, rect.Top, topLine, null, fColor, bColor);
var bottomLineTop = rect.Top + rect.Height - 1;
if(boundary == null || bottomLineTop < boundary.Top + boundary.Height)
Write(rect.Left, bottomLineTop, bottomLine, null, fColor, bColor);
#endregion
#region Left and right edge
// Drawing of left and right edges is optimized to call Console.Write as few as possible.
// This is only possible when the box should be filled and all fill-colors equals the edge-colors.
// Fill = true
// Colors same:
// create a string which contains the whole line (edges and fill) => draw in one part
// Colors different:
// draw the line in 3 parts
// TODO: draw edges with dummy chars in between + draw the actual filling afterwards (=> 2 parts instead of 3)
// Fill = false
// draw the line in 3 parts (existing characters which could be inside the box have to be preserved)
string middleLine;
if (fColor == fFillColor && bColor == bFillColor)
middleLine = charSet.VerticalEdge + new string(charSet.Empty, rect.Width - 2) + charSet.VerticalEdge;
else
middleLine = new string(charSet.Empty, rect.Width - 2);
if (boundary != null &&
middleLine.Length + rect.Left > boundary.Left + boundary.Width &&
(fColor == fFillColor && bColor == bFillColor))
{
var charsInside = boundary.Width - (rect.Left - boundary.Left);
middleLine = middleLine.Substring(0, charsInside);
}
var middleHeight = rect.Height - 1;
if (boundary != null && rect.Top + middleHeight > boundary.Top + boundary.Height)
{
middleHeight = boundary.Height - (rect.Top - boundary.Top);
}
for (int i = 1; i < middleHeight; i++)
{
if (!fill || fColor != fFillColor || bColor == bFillColor)
{
Write(rect.Left, rect.Top + i, charSet.VerticalEdge, null, fColor, bColor);
var left = rect.Left + rect.Width - 1;
if(boundary == null || left < boundary.Left + boundary.Width)
Write(left, rect.Top + i, charSet.VerticalEdge, null, fColor, bColor);
}
if(fill)
{
if (fColor == fFillColor && bColor == bFillColor)
{
Write(rect.Left, rect.Top + i, middleLine, null, fColor, bColor);
}
else
{
Write(rect.Left + 1, rect.Top + i, middleLine, null, fFillColor, bFillColor);
}
}
}
#endregion
}
