public static ImageSource ConstructIcon(bool isAvailableOrLiteratureName, string elemType, bool isChanged)
{
// This is used to construct image uri's, if required...
string assemblyName = typeof(TaxonViewModel).Assembly.GetName().Name;
// Available and Literature names don'note have icons either
if (isAvailableOrLiteratureName)
{
// Unless they've been changed, in which they get the
if (isChanged)
{
return(ImageCache.GetImage(String.Format("pack://application:,,,/{0};component/images/ChangedOverlay.png", assemblyName)));
}
else
{
return(null);
}
}
BitmapSource baseIcon = null;
if (elemType == null)
{
return(null);
}
if (_ElemTypeIconCache.ContainsKey(elemType))
{
baseIcon = _ElemTypeIconCache[elemType];
}
if (baseIcon != null && !isChanged)
{
return(baseIcon);
}
if (baseIcon == null)
{
RenderTargetBitmap bmp = new RenderTargetBitmap(_IconSize, _IconSize, 96, 96, PixelFormats.Pbgra32);
DrawingVisual drawingVisual = new DrawingVisual();
DrawingContext dc = drawingVisual.RenderOpen();
IconMetaData md = null;
if (_TaxaIconMetaData.ContainsKey(elemType))
{
md = _TaxaIconMetaData[elemType];
}
Color taxonColor = (md == null ? Colors.Red : md.Color);
string caption = (md == null ? "?" : md.Caption);
Pen pen = new Pen(new SolidColorBrush(taxonColor), 2);
Brush textBrush = new SolidColorBrush(Color.FromArgb(200, 0, 0, 0));
Brush fillBrush = new SolidColorBrush(Color.FromArgb(20, taxonColor.R, taxonColor.G, taxonColor.B));
Typeface typeface = new Typeface(new FontFamily("Palatino Linotype,Times New Roman"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
dc.DrawRoundedRectangle(fillBrush, pen, new Rect(1, 1, _IconSize - 2, _IconSize - 2), 4, 4);
FormattedText t = new FormattedText(caption, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeface, 10, textBrush);
double originX = (bmp.Width / 2) - (t.Width / 2);
double originY = (bmp.Height / 2) - (t.Height / 2);
dc.DrawText(t, new Point(originX, originY));
dc.Close();
bmp.Render(drawingVisual);
if (elemType != null && !_ElemTypeIconCache.ContainsKey(elemType))
{
_ElemTypeIconCache.Add(elemType, bmp);
}
baseIcon = bmp;
}
if (isChanged)
{
return(ImageCache.ApplyOverlay(baseIcon, String.Format("pack://application:,,,/{0};component/images/ChangedOverlay.png", assemblyName)));
}
return(baseIcon);
}