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Add Async FontDialog methods and sample
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| using System; | ||
| using System.Threading.Tasks; | ||
|
|
||
| namespace Gtk; | ||
|
|
||
| public partial class FontDialog | ||
| { | ||
| //TODO: Async methods should be generated automatically (https://github.com/gircore/gir.core/issues/893) | ||
| public Task<Pango.FontFace?> ChooseFaceAsync(Window parent, Pango.FontFace? fontFace) | ||
| { | ||
| var tcs = new TaskCompletionSource<Pango.FontFace?>(); | ||
|
|
||
| var callbackHandler = new Gio.Internal.AsyncReadyCallbackAsyncHandler((sourceObject, res, data) => | ||
| { | ||
| if (sourceObject is null) | ||
| { | ||
| tcs.SetException(new Exception("Missing source object")); | ||
| return; | ||
| } | ||
|
|
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| var chooseFontFaceResult = Internal.FontDialog.ChooseFaceFinish(sourceObject.Handle, res.Handle, out var error); | ||
|
|
||
| if (!error.IsInvalid) | ||
| tcs.SetException(new GLib.GException(error)); | ||
| else | ||
| { | ||
| var result = GObject.Internal.ObjectWrapper.WrapNullableHandle<Pango.FontFace>(chooseFontFaceResult, false); | ||
| tcs.SetResult(result); | ||
| } | ||
| }); | ||
|
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| Internal.FontDialog.ChooseFace( | ||
| Handle, | ||
| parent.Handle, | ||
| fontFace?.Handle ?? IntPtr.Zero, | ||
| IntPtr.Zero, | ||
| callbackHandler.NativeCallback, | ||
| IntPtr.Zero | ||
| ); | ||
|
|
||
| return tcs.Task; | ||
| } | ||
|
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| //TODO: Async methods should be generated automatically (https://github.com/gircore/gir.core/issues/893) | ||
| public Task<Pango.FontFamily?> ChooseFamilyAsync(Window parent, Pango.FontFamily? fontFamily) | ||
| { | ||
| var tcs = new TaskCompletionSource<Pango.FontFamily?>(); | ||
|
|
||
| var callbackHandler = new Gio.Internal.AsyncReadyCallbackAsyncHandler((sourceObject, res, data) => | ||
| { | ||
| if (sourceObject is null) | ||
| { | ||
| tcs.SetException(new Exception("Missing source object")); | ||
| return; | ||
| } | ||
|
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| var chooseFontFamilyResult = Internal.FontDialog.ChooseFamilyFinish(sourceObject.Handle, res.Handle, out var error); | ||
|
|
||
| if (!error.IsInvalid) | ||
| tcs.SetException(new GLib.GException(error)); | ||
| else | ||
| { | ||
| var result = GObject.Internal.ObjectWrapper.WrapNullableHandle<Pango.FontFamily>(chooseFontFamilyResult, false); | ||
| tcs.SetResult(result); | ||
| } | ||
| }); | ||
|
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| Internal.FontDialog.ChooseFamily( | ||
| Handle, | ||
| parent.Handle, | ||
| fontFamily?.Handle ?? IntPtr.Zero, | ||
| IntPtr.Zero, | ||
| callbackHandler.NativeCallback, | ||
| IntPtr.Zero | ||
| ); | ||
|
|
||
| return tcs.Task; | ||
| } | ||
|
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||
| //TODO: Async methods should be generated automatically (https://github.com/gircore/gir.core/issues/893) | ||
| public Task<Pango.FontDescription?> ChooseFontAsync(Window parent, Pango.FontDescription? fontDescription) | ||
| { | ||
| var tcs = new TaskCompletionSource<Pango.FontDescription?>(); | ||
|
|
||
| var callbackHandler = new Gio.Internal.AsyncReadyCallbackAsyncHandler((sourceObject, res, data) => | ||
| { | ||
| if (sourceObject is null) | ||
| { | ||
| tcs.SetException(new Exception("Missing source object")); | ||
| return; | ||
| } | ||
|
|
||
| var fontDescriptionOwnedHandle = Internal.FontDialog.ChooseFontFinish(sourceObject.Handle, res.Handle, out var error); | ||
|
|
||
| if (!error.IsInvalid) | ||
| tcs.SetException(new GLib.GException(error)); | ||
| else | ||
| { | ||
| if (fontDescriptionOwnedHandle.IsInvalid) | ||
| tcs.SetResult(null); | ||
| else | ||
| { | ||
| var result = new Pango.FontDescription(fontDescriptionOwnedHandle); | ||
| tcs.SetResult(result); | ||
| } | ||
| } | ||
| }); | ||
|
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| var initialValue = (Pango.Internal.FontDescriptionHandle?) fontDescription?.Handle ?? Pango.Internal.FontDescriptionUnownedHandle.NullHandle; | ||
| Internal.FontDialog.ChooseFont( | ||
| Handle, | ||
| parent.Handle, | ||
| initialValue, | ||
| IntPtr.Zero, | ||
| callbackHandler.NativeCallback, | ||
| IntPtr.Zero | ||
| ); | ||
|
|
||
| return tcs.Task; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\..\Libs\Gtk-4.0\Gtk-4.0.csproj" /> | ||
| </ItemGroup> | ||
|
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net6.0</TargetFramework> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| using System; | ||
|
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| var application = Gtk.Application.New("org.gir.core", Gio.ApplicationFlags.FlagsNone); | ||
| application.OnActivate += (sender, args) => | ||
| { | ||
| var labelSelectedFont = Gtk.Label.New(""); | ||
| labelSelectedFont.SetMarginTop(12); | ||
| labelSelectedFont.SetMarginBottom(12); | ||
| labelSelectedFont.SetMarginStart(12); | ||
| labelSelectedFont.SetMarginEnd(12); | ||
|
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| var buttonSelectFont = Gtk.Button.New(); | ||
| buttonSelectFont.Label = "Select Font"; | ||
| buttonSelectFont.SetMarginTop(12); | ||
| buttonSelectFont.SetMarginBottom(12); | ||
| buttonSelectFont.SetMarginStart(12); | ||
| buttonSelectFont.SetMarginEnd(12); | ||
|
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| var gtkBox = Gtk.Box.New(Gtk.Orientation.Vertical, 0); | ||
| gtkBox.Append(labelSelectedFont); | ||
| gtkBox.Append(buttonSelectFont); | ||
|
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| var window = Gtk.ApplicationWindow.New((Gtk.Application) sender); | ||
| window.Title = "Gtk4 Window"; | ||
| window.SetDefaultSize(300, 300); | ||
| window.Child = gtkBox; | ||
|
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| buttonSelectFont.OnClicked += async (_, _) => | ||
| { | ||
| try | ||
| { | ||
| var fontDialog = Gtk.FontDialog.New(); | ||
| var selectedFont = await fontDialog.ChooseFontAsync(window, null); | ||
| labelSelectedFont.SetLabel(selectedFont.ToString()); | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| //Prints "Dismissed by user" if dialog is cancelled | ||
| Console.WriteLine(ex.Message); | ||
| } | ||
| }; | ||
|
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| window.Show(); | ||
| }; | ||
| return application.RunWithSynchronizationContext(null); |