public void PutChar(char ch, Brush foregroundBrush, Brush backgroundBrush)
{
if (ch == '\n')
{
this.cursorLine += 1;
this.cursorColumn = 0;
}
else
{
// First, see if we've already inserted something at this position.
// If so, delete the old visuals.
var cursorPos = Tuple.Create(this.cursorColumn, this.cursorLine);
if (this.visualPairs.ContainsKey(cursorPos))
{
var visualPair = this.visualPairs[cursorPos];
this.visuals.Remove(visualPair.Background);
this.visuals.Remove(visualPair.Character);
this.visualPairs.Remove(cursorPos);
}
var backgroundVisual = new DrawingVisual();
var backgroundContext = backgroundVisual.RenderOpen();
var x = fontCharSize.Width * cursorColumn;
var y = fontCharSize.Height * cursorLine;
var backgroundRect = new Rect(
Math.Floor(x),
Math.Floor(y),
Math.Ceiling(fontCharSize.Width + 0.5),
Math.Ceiling(fontCharSize.Height));
backgroundContext.DrawRectangle(backgroundBrush, null, backgroundRect);
backgroundContext.Close();
this.visuals.Insert(0, backgroundVisual);
var textVisual = new DrawingVisual();
var textContext = textVisual.RenderOpen();
textContext.DrawText(
new FormattedText(
ch.ToString(CultureInfo.InvariantCulture),
CultureInfo.InstalledUICulture,
FlowDirection.LeftToRight,
GetTypeface(),
this.fontSize,
foregroundBrush,
new NumberSubstitution(NumberCultureSource.User, CultureInfo.InstalledUICulture, NumberSubstitutionMethod.AsCulture),
TextFormattingMode.Display),
new Point(x, y));
textContext.Close();
this.visuals.Add(textVisual);
var newVisualPair = new VisualPair(backgroundVisual, textVisual);
this.visualPairs.Add(cursorPos, newVisualPair);
this.cursorColumn += 1;
}
}
public void PutChar(char ch, Brush foregroundBrush, Brush backgroundBrush)
{
if (ch == '\n')
{
this.cursorLine += 1;
this.cursorColumn = 0;
}
else
{
// First, see if we've already inserted something at this position.
// If so, delete the old visuals.
var cursorPos = Tuple.Create(this.cursorColumn, this.cursorLine);
if (this.visualPairs.ContainsKey(cursorPos))
{
var visualPair = this.visualPairs[cursorPos];
this.visuals.Remove(visualPair.Background);
this.visuals.Remove(visualPair.Character);
this.visualPairs.Remove(cursorPos);
}
var backgroundVisual = new DrawingVisual();
var backgroundContext = backgroundVisual.RenderOpen();
var x = fontCharSize.Width * cursorColumn;
var y = fontCharSize.Height * cursorLine;
var backgroundRect = new Rect(
Math.Floor(x),
Math.Floor(y),
Math.Ceiling(fontCharSize.Width + 0.5),
Math.Ceiling(fontCharSize.Height));
backgroundContext.DrawRectangle(backgroundBrush, null, backgroundRect);
backgroundContext.Close();
this.visuals.Insert(0, backgroundVisual);
var textVisual = new DrawingVisual();
var textContext = textVisual.RenderOpen();
textContext.DrawText(
new FormattedText(
ch.ToString(CultureInfo.InvariantCulture),
CultureInfo.InstalledUICulture,
FlowDirection.LeftToRight,
GetTypeface(),
this.fontSize,
foregroundBrush,
new NumberSubstitution(NumberCultureSource.User, CultureInfo.InstalledUICulture, NumberSubstitutionMethod.AsCulture),
TextFormattingMode.Display),
new Point(x, y));
textContext.Close();
this.visuals.Add(textVisual);
var newVisualPair = new VisualPair(backgroundVisual, textVisual);
this.visualPairs.Add(cursorPos, newVisualPair);
this.cursorColumn += 1;
}
}
