Update to gir.core 0.5.0

- This contains a fix for the random crashes encountered on Windows

- The Cairo.Matrix class now has a more convenient constructor

- Gdk.FileList.GetFiles() is not being generated and requires a manual binding for now, but GLib.SList methods are now generated

Fixes: #674

Directory.Packages.props

@@ -3,9 +3,9 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="GirCore.Adw-1" Version="0.5.0-preview.4" />
-    <PackageVersion Include="GirCore.Gtk-4.0" Version="0.5.0-preview.4" />
-    <PackageVersion Include="GirCore.PangoCairo-1.0" Version="0.5.0-preview.4" />
+    <PackageVersion Include="GirCore.Adw-1" Version="0.5.0" />
+    <PackageVersion Include="GirCore.Gtk-4.0" Version="0.5.0" />
+    <PackageVersion Include="GirCore.PangoCairo-1.0" Version="0.5.0" />
     <!-- Note: at least 1.4.2-alpha3 is required for fixes to uninstalling addins, from https://github.com/mono/mono-addins/pull/198 -->
     <PackageVersion Include="Mono.Addins" Version="1.4.2-alpha.4" />
     <PackageVersion Include="Mono.Addins.Setup" Version="1.4.2-alpha.4" />

Pinta.Core/Extensions/CairoExtensions.cs

@@ -1434,15 +1434,15 @@ public static void AddColorStop (this Gradient gradient, double offset, Color co
 		// TODO-GTK4 (bindings) - requires improvements to struct generation (https://github.com/gircore/gir.core/issues/622)
 		public static Matrix CreateIdentityMatrix ()
 		{
-			var matrix = new Matrix (Cairo.Internal.MatrixManagedHandle.Create ());
+			var matrix = new Matrix ();
 			matrix.InitIdentity ();
 			return matrix;
 		}
 
 		// TODO-GTK4 (bindings) - requires improvements to struct generation (https://github.com/gircore/gir.core/issues/622)
 		public static Matrix CreateMatrix (double xx, double xy, double yx, double yy, double x0, double y0)
 		{
-			var matrix = new Matrix (Cairo.Internal.MatrixManagedHandle.Create ());
+			var matrix = new Matrix ();
 			matrix.Init (xx, xy, yx, yy, x0, y0);
 			return matrix;
 		}

Pinta.Core/Extensions/GdkExtensions.cs

@@ -25,13 +25,24 @@
 // THE SOFTWARE.
 
 using System;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Gdk;
 
 namespace Pinta.Core;
 
 public static class GdkExtensions
 {
+	private const string GdkLibraryName = "Gdk";
+
+	static GdkExtensions ()
+	{
+		NativeImportResolver.RegisterLibrary (GdkLibraryName,
+			windowsLibraryName: "libgtk-4-1.dll",
+			linuxLibraryName: "libgtk-4.so.1",
+			osxLibraryName: "libgtk-4.1.dylib"
+		);
+	}
 	public static bool IsShiftPressed (this ModifierType m)
 		=> m.HasFlag (ModifierType.ShiftMask);
 
@@ -224,15 +235,19 @@ public static unsafe Cairo.ImageSurface ToSurface (this Gdk.Texture texture)
 		return surf;
 	}
 
-	// TODO-GTK4 (bindings) - struct methods are not generated (https://github.com/gircore/gir.core/issues/622)
+	[DllImport (GdkLibraryName, EntryPoint = "gdk_file_list_get_files")]
+	private static extern GLib.Internal.SListOwnedHandle FileListGetFiles (Gdk.Internal.FileListHandle fileList);
+
+	// Wrapper around Gdk.FileList.GetFiles() to return a Gio.File array rather than GLib.SList.
+	// TODO-GTK4 (bindings) - Gdk.FileList.GetFiles() is not generated
 	public static Gio.File[] GetFilesHelper (this Gdk.FileList file_list)
 	{
-		var slist = file_list.GetFiles ();
+		var slist = new GLib.SList (FileListGetFiles (file_list.Handle));
 
-		uint n = GLib.Internal.SList.Length (slist.Handle);
+		uint n = GLib.SList.Length (slist);
 		var result = new Gio.File[n];
 		for (uint i = 0; i < n; ++i) {
-			result[i] = new Gio.FileHelper (GLib.Internal.SList.NthData (slist.Handle, i), ownedRef: false);
+			result[i] = new Gio.FileHelper (GLib.SList.NthData (slist, i), ownedRef: false);
 		}
 
 		return result;