/// <summary>
/// Get solid color brush for the given color.
/// </summary>
private static Brush GetSolidColorBrush(RColor color)
{
Brush solidBrush;
if (color == RColor.White)
solidBrush = Brushes.White;
else if (color == RColor.Black)
solidBrush = Brushes.Black;
else if (color.A < 1)
solidBrush = Brushes.Transparent;
else
solidBrush = new SolidColorBrush(Util.Convert(color));
return solidBrush;
}
public override void Render(IDrawingContext context)
{
var selectionStart = SelectionStart;
var selectionEnd = SelectionEnd;
if (selectionStart != selectionEnd)
{
var start = Math.Min(selectionStart, selectionEnd);
var length = Math.Max(selectionStart, selectionEnd) - start;
var rects = FormattedText.HitTestTextRange(start, length);
var brush = new SolidColorBrush(0xff086f9e);
foreach (var rect in rects)
{
context.FillRectange(brush, rect);
}
}
base.Render(context);
if (selectionStart == selectionEnd)
{
var charPos = FormattedText.HitTestTextPosition(CaretIndex);
var backgroundColor = (((Control)TemplatedParent).GetValue(BackgroundProperty) as SolidColorBrush)?.Color;
var caretBrush = Brushes.Black;
if(backgroundColor.HasValue)
{
byte red = (byte)~(backgroundColor.Value.R);
byte green = (byte)~(backgroundColor.Value.G);
byte blue = (byte)~(backgroundColor.Value.B);
caretBrush = new SolidColorBrush(Color.FromRgb(red, green, blue));
}
if (_caretBlink)
{
var x = Math.Floor(charPos.X) + 0.5;
var y = Math.Floor(charPos.Y) + 0.5;
var b = Math.Ceiling(charPos.Bottom) - 0.5;
context.DrawLine(
new Pen(caretBrush, 1),
new Point(x, y),
new Point(x, b));
}
}
}
/// <summary>
/// Converts a brush to Direct2D.
/// </summary>
/// <param name="brush">The brush to convert.</param>
/// <returns>The Direct2D brush.</returns>
private SharpDX.Direct2D1.SolidColorBrush Convert(Perspex.Media.Brush brush)
{
Perspex.Media.SolidColorBrush solidColorBrush = brush as Perspex.Media.SolidColorBrush;
if (solidColorBrush != null)
{
return(new SharpDX.Direct2D1.SolidColorBrush(
this.renderTarget,
this.Convert(solidColorBrush.Color)));
}
else
{
return(new SharpDX.Direct2D1.SolidColorBrush(
this.renderTarget,
new Color4()));
}
}
public override void Render(IDrawingContext context)
{
var selectionStart = SelectionStart;
var selectionEnd = SelectionEnd;
if (selectionStart != selectionEnd)
{
var start = Math.Min(selectionStart, selectionEnd);
var length = Math.Max(selectionStart, selectionEnd) - start;
var rects = FormattedText.HitTestTextRange(start, length);
var brush = new SolidColorBrush(0xff086f9e);
foreach (var rect in rects)
{
context.FillRectange(brush, rect);
}
}
base.Render(context);
if (selectionStart == selectionEnd)
{
var charPos = FormattedText.HitTestTextPosition(CaretIndex);
Brush caretBrush = Brushes.Black;
if (_caretBlink)
{
var x = Math.Floor(charPos.X) + 0.5;
var y = Math.Floor(charPos.Y) + 0.5;
var b = Math.Ceiling(charPos.Bottom) - 0.5;
context.DrawLine(
new Pen(caretBrush, 1),
new Point(x, y),
new Point(x, b));
}
}
}
/// <summary>
///
/// </summary>
/// <param name="dc"></param>
/// <param name="c"></param>
/// <param name="width"></param>
/// <param name="height"></param>
private void DrawBackground(DrawingContext dc, ArgbColor c, double width, double height)
{
var color = Color.FromArgb(c.A, c.R, c.G, c.B);
var brush = new SolidColorBrush(color);
var rect = new Rect(0, 0, width, height);
dc.FillRectangle(brush, rect);
// TODO: brush.Dispose();
}