private void DrawComboBoxItem(DrawItemEventArgs e)
{
HighlightState hover;
string fontName = (string)base.ComboBox.Items[e.Index];
bool flag = (e.State & DrawItemState.Selected) > DrawItemState.None;
bool flag2 = this.hasBeenShown && (e.Bounds.Width >= (base.ComboBox.DropDownWidth / 2));
if (!flag2)
{
hover = HighlightState.Default;
}
else if (flag)
{
hover = HighlightState.Hover;
}
else
{
hover = HighlightState.Default;
}
Color selectionBackColor = SelectionHighlight.GetSelectionBackColor(hover);
int num = UIUtil.ScaleWidth(3);
int num2 = num;
int num3 = -1;
this.selectionHighlightRenderer.HighlightState = hover;
using (IDrawingContext context = DrawingContextUtil.FromGraphics(e.Graphics, e.Bounds, false, FactorySource.PerThread))
{
RenderLayer layer = new RenderLayer();
context.Clear(new ColorRgba128Float?((ColorRgba128Float)PaintDotNet.Imaging.SystemColors.Window));
this.selectionHighlightRenderer.RenderBackground(context, e.Bounds.ToRectFloat());
SizedFontProperties menu = this.systemFonts.Menu;
PaintDotNet.UI.Media.Brush textBrush = this.selectionHighlightRenderer.EmbeddedTextBrush;
TextLayout textLayout = UIText.CreateLayout(context, fontName, menu, null, HotkeyRenderMode.Ignore, (double)(e.Bounds.Width - num2), (double)e.Bounds.Height);
textLayout.ParagraphAlignment = ParagraphAlignment.Center;
textLayout.WordWrapping = WordWrapping.NoWrap;
int num5 = num + e.Bounds.X;
context.DrawTextLayout((double)num5, (double)(e.Bounds.Y + num3), textLayout, textBrush, DrawTextOptions.None);
ITextLayout cachedOrCreateResource = context.GetCachedOrCreateResource <ITextLayout>(textLayout);
int num4 = (int)Math.Ceiling((double)(num5 + cachedOrCreateResource.Metrics.WidthMax));
PlacedBitmap bitmap = this.TryGetFontPreview(fontName, 16f, textBrush);
if (bitmap == null)
{
IntPtr listHwnd = UIUtil.GetListBoxHwnd(base.ComboBox);
Action callback = delegate {
try
{
PlacedBitmap bitmap = this.GetOrCreateFontPreview(fontName, 16f, textBrush);
if (listHwnd != IntPtr.Zero)
{
this.ComboBox.BeginInvoke(() => UIUtil.InvalidateHwnd(listHwnd));
}
}
catch (Exception)
{
}
};
if (this.backgroundThread == null)
{
this.backgroundThread = new ThreadDispatcher(ApartmentState.MTA);
}
this.backgroundThread.Enqueue(QueueSide.Front, callback).Observe();
}
if (flag2 && (bitmap != null))
{
PaintDotNet.UI.Media.Brush brush;
RectFloat num7;
RectFloat num6 = new RectFloat((float)((e.Bounds.Right - num) - bitmap.Bitmap.Size.Width), num3 + ((float)Math.Floor((double)((e.Bounds.Y + ((e.Bounds.Height - bitmap.LayoutRect.Height) / 2.0)) - bitmap.LayoutRect.Top))), (float)bitmap.Bitmap.Size.Width, (float)bitmap.Bitmap.Size.Height);
if (num6.Left > num4)
{
num7 = num6;
brush = null;
}
else
{
num7 = num6;
num7.X += num4 - num6.X;
num7.X = (float)Math.Ceiling((double)num7.X);
LinearGradientBrush brush2 = new LinearGradientBrush {
ColorInterpolationMode = ColorInterpolationMode.SRgbLinearInterpolation,
SpreadMethod = GradientSpreadMethod.Pad
};
brush2.GradientStops.Add(new GradientStop(Color.White, 0.0));
brush2.GradientStops.Add(new GradientStop(Color.White, ((double)(e.Bounds.Width - UIUtil.ScaleWidth(0x18))) / ((double)e.Bounds.Width)));
brush2.GradientStops.Add(new GradientStop(Color.Transparent, 1.0));
brush2.EndPoint = new PointDouble((double)e.Bounds.Width, 0.0);
brush = brush2;
}
using (context.CreateLayer(null))
{
context.PushLayer(layer, new RectDouble?(num7), null, AntialiasMode.Aliased, new Matrix3x2Double?(Matrix3x2Float.Identity), 1.0, brush, LayerOptions.None);
context.DrawBitmap(bitmap.DeviceBitmap, new RectDouble?(num7), 1.0, BitmapInterpolationMode.Linear, null);
context.PopLayer();
}
}
}
}