private void redraw()
{
Dispatcher.VerifyAccess();
var context = RenderOpen();
try
{
if (line == null)
{
return;
}
TextDecorationCollection textDecorations = null;
// Stores the previously formatted run
FormattedText prevFt = null;
var drawPoint = new System.Windows.Point(0, 0);
int index = 0;
foreach (var run in line.Runs)
{
if (run.Font.Hidden && Line.Runs[Line.Runs.Count - 1] == run)
{
break;
}
SolidColorBrush foreground;
SolidColorBrush background;
if (run.Font.Inverse)
{
foreground = Terminal.GetFontBackgroundBrush(run.Font);
background = Terminal.GetFontForegroundBrush(run.Font);
}
else
{
foreground = Terminal.GetFontForegroundBrush(run.Font);
background = Terminal.GetFontBackgroundBrush(run.Font);
}
// Format the text for this run. However, this is drawn NEXT run. The
// background is drawn one run ahead of the text so the text doesn't get
// clipped.
var ft = new FormattedText(
run.Text,
System.Globalization.CultureInfo.CurrentUICulture,
Terminal.FlowDirection,
Terminal.GetFontTypeface(run.Font),
Terminal.FontSize,
foreground,
new NumberSubstitution(),
TextFormattingMode.Ideal
);
if (run.Font.Underline || run.Font.Strike)
{
if (textDecorations == null)
{
textDecorations = new TextDecorationCollection(2);
}
else
{
textDecorations.Clear();
}
if (run.Font.Underline)
{
textDecorations.Add(TextDecorations.Underline);
}
if (run.Font.Strike)
{
textDecorations.Add(TextDecorations.Strikethrough);
}
ft.SetTextDecorations(textDecorations);
}
// Draw the background and border for the current run
Pen border = null;
if (Terminal.DrawRunBoxes)
{
border = new Pen(DebugColors.GetBrush(index), 1);
}
var backgroundTopLeft = new System.Windows.Point(Math.Floor(drawPoint.X), Math.Floor(drawPoint.Y));
if (prevFt != null)
{
backgroundTopLeft.X += prevFt.WidthIncludingTrailingWhitespace;
}
var backgroundSize = new Vector(Math.Ceiling(ft.WidthIncludingTrailingWhitespace + 1), Math.Ceiling(ft.Height + 1));
context.DrawRectangle(background, border, new Rect(backgroundTopLeft, backgroundSize));
if (prevFt != null)
{
context.DrawText(prevFt, drawPoint);
drawPoint.X += prevFt.WidthIncludingTrailingWhitespace;
}
prevFt = ft;
index++;
}
if (prevFt != null)
{
context.DrawText(prevFt, drawPoint);
}
// TODO: This selection drawing logic doesn't account for multi-width characters.
if (SelectionStart != SelectionEnd)
{
if (prevFt != null)
{
drawPoint.X += prevFt.WidthIncludingTrailingWhitespace;
}
var selectRect = new Rect(
new System.Windows.Point(Math.Floor(Math.Min(drawPoint.X, Terminal.CharWidth * SelectionStart)), 0.0),
new System.Windows.Point(Math.Ceiling(Math.Min(drawPoint.X, Terminal.CharWidth * SelectionEnd)), Math.Ceiling(Terminal.CharHeight)));
var brush = new SolidColorBrush(System.Windows.Media.Color.FromArgb(128, 90, 180, 230));
context.DrawRectangle(brush, null, selectRect);
}
}
finally
{
context.Close();
}
}
private void redraw(TerminalRun[] runs)
{
Dispatcher.VerifyAccess();
//drawnRuns = new List<VisualRun>(runs.Length);
//for (int i = 0; i < runs.Length; ++i)
//{
// drawnRuns.Add(new VisualRun() { Run = runs[i], Text = null });
//}
bool changed = false;
for (int i = 0; i < Math.Min(drawnRuns.Count, runs.Length); ++i)
{
if (drawnRuns[i].Run.Text != runs[i].Text || drawnRuns[i].Run.Font != runs[i].Font)
{
drawnRuns[i] = new VisualRun()
{
Run = runs[i], Text = null
};
changed = true;
}
}
if (drawnRuns.Count > runs.Length)
{
drawnRuns.RemoveRange(runs.Length, drawnRuns.Count - runs.Length);
}
else if (drawnRuns.Count < runs.Length)
{
drawnRuns.AddRange(runs.Skip(drawnRuns.Count).Select(x => new VisualRun()
{
Run = x
}));
}
else if (!changed && !selectionChanged)
{
return;
}
selectionChanged = false;
for (int i = 0; i < drawnRuns.Count; ++i)
{
var run = drawnRuns[i].Run;
if (drawnRuns[i].Text != null)
{
continue;
}
SolidColorBrush foreground = Terminal.GetFontForegroundBrush(run.Font);
// Format the text for this run. However, this is drawn NEXT run. The
// background is drawn one run ahead of the text so the text doesn't get
// clipped.
var ft = new FormattedText(
run.Text,
System.Globalization.CultureInfo.CurrentUICulture,
Terminal.FlowDirection,
Terminal.GetFontTypeface(run.Font),
Terminal.FontSize,
foreground,
new NumberSubstitution(),
TextFormattingMode.Ideal
);
if (run.Font.Underline || run.Font.Strike)
{
var textDecorations = new TextDecorationCollection(2);
if (run.Font.Underline)
{
textDecorations.Add(TextDecorations.Underline);
}
if (run.Font.Strike)
{
textDecorations.Add(TextDecorations.Strikethrough);
}
ft.SetTextDecorations(textDecorations);
}
drawnRuns[i] = new VisualRun()
{
Run = drawnRuns[i].Run, Text = ft
};
}
var context = RenderOpen();
try
{
var drawPoint = new System.Windows.Point(0, 0);
int index = 0;
foreach (var run in drawnRuns)
{
if (run.Run.Font.Hidden && index == drawnRuns.Count - 1)
{
break;
}
SolidColorBrush background = Terminal.GetFontBackgroundBrush(run.Run.Font);
// Draw the background and border for the current run
Pen border = null;
if (Terminal.DrawRunBoxes)
{
border = new Pen(DebugColors.GetBrush(index), 1);
}
var backgroundTopLeft = new System.Windows.Point(Math.Floor(drawPoint.X), Math.Floor(drawPoint.Y));
var backgroundSize = new Vector(Math.Floor(run.Text.WidthIncludingTrailingWhitespace), Math.Ceiling(run.Text.Height));
context.DrawRectangle(background, border, new Rect(backgroundTopLeft, backgroundSize));
drawPoint.X += run.Text.WidthIncludingTrailingWhitespace;
index++;
}
drawPoint = new System.Windows.Point(0, 0);
index = 0;
foreach (var run in drawnRuns)
{
if (run.Run.Font.Hidden && index == drawnRuns.Count - 1)
{
break;
}
context.DrawText(run.Text, drawPoint);
drawPoint.X += run.Text.WidthIncludingTrailingWhitespace;
index++;
}
// TODO: This selection drawing logic doesn't account for multi-width characters.
if (SelectionStart != SelectionEnd)
{
var selectRect = new Rect(
new System.Windows.Point(Math.Floor(Math.Min(drawPoint.X, Terminal.CharWidth * SelectionStart)), 0.0),
new System.Windows.Point(Math.Ceiling(Math.Min(drawPoint.X, Terminal.CharWidth * SelectionEnd)), Math.Ceiling(Terminal.CharHeight)));
var brush = new SolidColorBrush(System.Windows.Media.Color.FromArgb(128, 90, 180, 230));
context.DrawRectangle(brush, null, selectRect);
}
}
finally
{
context.Close();
}
}
