Add a GTK# renderer for Xamarin.Forms

[mattleibow]

No description provided.

[mattleibow]

Duplicate of #379

[hflexgrig]

Is there any news from this. I'm currently using SkiaSharp.Views.Forms for my application, and it won't work for my application. Error i'm getting is

"System.InvalidCastException: Unable to cast object of type 'SkiaSharp.Views.Forms.SKCanvasViewRenderer' to type 'Xamarin.Forms.IRegisterable'.
at Xamarin.Forms.Internals.Registrar1.GetHandler(Type type, Type visualType) in D:\a\1\s\Xamarin.Forms.Core\Registrar.cs:line 71 at Xamarin.Forms.Internals.Registrar1.GetHandlerForObject[TOut](Object obj) in D:\a\1\s\Xamarin.Forms.Core\Registrar.cs:line 111
at Xamarin.Forms.Platform.GTK.Platform.CreateRenderer(VisualElement element) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Platform.cs:line 94
at Xamarin.Forms.Platform.GTK.Packagers.PageElementPackager.OnChildAdded(VisualElement view) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Packagers\PageElementPackager.cs:line 14
at Xamarin.Forms.Platform.GTK.Packagers.VisualElementPackager1.Load() in D:\a\1\s\Xamarin.Forms.Platform.GTK\Packagers\VisualElementPackager.cs:line 40 at Xamarin.Forms.Platform.GTK.Renderers.PageRenderer.OnShown() in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\PageRenderer.cs:line 29 at Gtk.Widget.shown_cb(IntPtr widget) at GLib.ExceptionManager.RaiseUnhandledException(Exception e, Boolean is_terminal) at Gtk.Widget.shown_cb(IntPtr widget) at Gtk.Widget.gtk_widget_show_all(IntPtr raw) at Xamarin.Forms.Platform.GTK.Renderers.TabbedPageRenderer.InsertPage(Page page, Int32 index) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\TabbedPageRenderer.cs:line 150 at Xamarin.Forms.Platform.GTK.Renderers.TabbedPageRenderer.ResetPages() in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\TabbedPageRenderer.cs:line 175 at Xamarin.Forms.Platform.GTK.Renderers.TabbedPageRenderer.OnPagesChanged(Object sender, NotifyCollectionChangedEventArgs e) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\TabbedPageRenderer.cs:line 116 at Xamarin.Forms.Platform.GTK.Renderers.TabbedPageRenderer.Init() in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\TabbedPageRenderer.cs:line 48 at Xamarin.Forms.Platform.GTK.Renderers.TabbedPageRenderer.OnElementChanged(VisualElementChangedEventArgs e) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\TabbedPageRenderer.cs:line 44 at Xamarin.Forms.Platform.GTK.Renderers.AbstractPageRenderer2.SetElement(VisualElement element) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Renderers\AbstractPageRenderer.cs:line 59
at Xamarin.Forms.Platform.GTK.Platform.CreateRenderer(VisualElement element) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Platform.cs:line 97
at Xamarin.Forms.Platform.GTK.Platform.AddChild(Page mainPage) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Platform.cs:line 143
at Xamarin.Forms.Platform.GTK.Platform.SetPage(Page newRoot) in D:\a\1\s\Xamarin.Forms.Platform.GTK\Platform.cs:line 126
at Xamarin.Forms.Platform.GTK.FormsWindow.UpdateMainPage() in D:\a\1\s\Xamarin.Forms.Platform.GTK\FormsWindow.cs:line 113
at Xamarin.Forms.Platform.GTK.FormsWindow.LoadApplication(Application application) in D:\a\1\s\Xamarin.Forms.Platform.GTK\FormsWindow.cs:line 42
at CSharpMath.Forms.Example.GTK.MainClass.Main(String[] args) in D:\Projects\csharpmath\CSharpMath.Forms.Example.GTK\Program.cs:line 19"

[mattleibow]

@hflexgrig this looks like you are missing the GTK renderers. Unfortunately, I just haven't gotten around to that yet. See this issue: #379 If you really need to use GTK, you can have a go at creating your own renderers or giving #379 a thumbs up to show support. As the votes come in, it moves up the list.