add Pilz.UI & Pilz.UI.Gtk

Pilz.UI.Gtk/Symbols/GtkSymbolFactory.cs

@@ -0,0 +1,35 @@
+using Gdk;
+using Gtk;
+using Pilz.UI.Symbols;
+using Size = System.Drawing.Size;
+
+namespace Pilz.UI.Gtk.Symbols;
+
+public abstract class GtkSymbolFactory<TSymbols> : BaseSymbolFactory<TSymbols>, IGtkSymbolFactory<TSymbols>
+{
+    public virtual Image? GetImage(TSymbols svgImage, SymbolSize size)
+    {
+        return GetImage(svgImage, ResolveCommonSize(size));
+    }
+
+    public virtual Image? GetImage(TSymbols svgImage, Size size)
+    {
+        using var stream = GetImageRessourceStream(svgImage);
+
+        if (stream is null)
+            return null;
+
+        Pixbuf pixbuf;
+        if (size.IsEmpty)
+            pixbuf = new(stream);
+        else
+            pixbuf = new(stream, size.Width, size.Height);
+        
+        return GetImageFromPixbuf(pixbuf);
+    }
+
+    public virtual Image GetImageFromPixbuf(Pixbuf pixbuf)
+    {
+        return new Image(pixbuf);
+    }
+}