public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
var attributes = new NSStringAttributes
{
ForegroundColor = NSColor.Blue,
Font = NSFont.FromFontName("Andale Mono", 14)
};
ProcessTextFormat(attributes);
NSColor.Black.SetFill();
NSBezierPath.FillRect(dirtyRect);
lock (Terminal)
{
int row = ViewTop;
float verticalOffset = -row * (float)CharacterHeight;
var lines = Terminal.ViewPort.GetLines(ViewTop, Rows);
foreach (var line in lines)
{
if (line == null)
{
row++;
continue;
}
int column = 0;
var xform = new NSAffineTransform();
xform.Scale((nfloat)(line.DoubleWidth ? 2.0 : 1.0), (nfloat)((line.DoubleHeightTop || line.DoubleHeightBottom) ? 2.0 : 1.0));
xform.Concat();
var spanStart = 0;
while (column < line.Count)
{
bool selected = TextSelection == null ? false : TextSelection.Within(column, row);
var backgroundColor = GetBackgroundColor(line[column].Attributes, selected);
if (column < (line.Count - 1) && GetBackgroundColor(line[column + 1].Attributes, TextSelection == null ? false : TextSelection.Within(column + 1, row)) == backgroundColor)
{
column++;
continue;
}
var rect = new CGRect(
spanStart * CharacterWidth,
((row - (line.DoubleHeightBottom ? 1 : 0)) * CharacterHeight + verticalOffset) * (line.DoubleHeightBottom | line.DoubleHeightTop ? 0.5 : 1.0),
((column - spanStart + 1) * CharacterWidth) + 0.9,
CharacterHeight + 0.9
);
backgroundColor.SetFill();
NSBezierPath.FillRect(rect);
column++;
spanStart = column;
}
xform.Invert();
xform.Concat();
row++;
}
row = ViewTop;
foreach (var line in lines)
{
if (line == null)
{
row++;
continue;
}
int column = 0;
var xform = new NSAffineTransform();
xform.Scale((nfloat)(line.DoubleWidth ? 2.0 : 1.0), (nfloat)((line.DoubleHeightTop || line.DoubleHeightBottom) ? 2.0 : 1.0));
xform.Concat();
var spanStart = 0;
string toDisplay = string.Empty;
while (column < line.Count)
{
bool selected = TextSelection == null ? false : TextSelection.Within(column, row);
var foregroundColor = GetForegroundColor(line[column].Attributes, selected);
toDisplay += line[column].Char.ToString() + line[column].CombiningCharacters;
if (
column < (line.Count - 1) &&
GetForegroundColor(line[column + 1].Attributes, TextSelection == null ? false : TextSelection.Within(column + 1, row)) == foregroundColor &&
line[column + 1].Attributes.Underscore == line[column].Attributes.Underscore &&
line[column + 1].Attributes.Reverse == line[column].Attributes.Reverse &&
line[column + 1].Attributes.Bright == line[column].Attributes.Bright
)
{
column++;
continue;
}
var textPosition = new CGPoint(
spanStart * CharacterWidth,
((row - (line.DoubleHeightBottom ? 1 : 0)) * CharacterHeight + verticalOffset + attributes.Font.Descender) * (line.DoubleHeightBottom | line.DoubleHeightTop ? 0.5 : 1.0)
);
attributes.ForegroundColor = foregroundColor;
attributes.UnderlineStyle = line[column].Attributes.Underscore ? 1 : 0;
var nsStr = new NSString(toDisplay);
nsStr.DrawAtPoint(textPosition, attributes.Dictionary);
column++;
spanStart = column;
toDisplay = "";
}
xform.Invert();
xform.Concat();
row++;
}
if (Terminal.CursorState.ShowCursor)
{
var cursorY = Terminal.ViewPort.TopRow - ViewTop + Terminal.CursorState.CurrentRow;
var cursorRect = new CGRect(
Terminal.CursorState.CurrentColumn * CharacterWidth,
cursorY * CharacterHeight,
CharacterWidth + 0.9,
CharacterHeight + 0.9
);
var path = NSBezierPath.FromRect(cursorRect);
GetForegroundColor(Terminal.CursorState.Attributes, false).Set();
path.Stroke();
}
}
}