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Merged
merged 1 commit into from
Jan 8, 2024
Merged

Add Async FontDialog methods and sample #993

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1 change: 1 addition & 0 deletions src/GirCore.Libs.slnf
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Expand Up @@ -39,6 +39,7 @@
"Samples/Gtk-4.0/AboutDialog/AboutDialog.csproj",
"Samples/Gtk-4.0/Builder/Builder.csproj",
"Samples/Gtk-4.0/DrawingArea/DrawingArea.csproj",
"Samples/Gtk-4.0/FontDialog/FontDialog.csproj",
"Samples/Gtk-4.0/Window/Window.csproj",
"Samples/WebKit-6.0/JavascriptCall/JavascriptCall.csproj",
"Samples/WebKit-6.0/JavascriptCallback/JavascriptCallback.csproj",
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2 changes: 2 additions & 0 deletions src/GirCore.sln
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Expand Up @@ -139,6 +139,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Gtk-4.0", "Libs/Gtk-4.0/Gtk
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Gtk-4.0", "Gtk-4.0", "{7B70E5ED-C5E7-4F32-A458-E5A10F39DA00}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FontDialog", "Samples/Gtk-4.0/FontDialog/FontDialog.csproj", "{D215B861-1A51-436A-82EB-FCF7AF892748}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Window", "Samples/Gtk-4.0/Window/Window.csproj", "{AD618F85-F8F5-454B-9CA0-ABF936492065}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AboutDialog", "Samples/Gtk-4.0/AboutDialog/AboutDialog.csproj", "{4008E1B8-AC7D-4CC8-AB74-8576493C4FDD}"
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121 changes: 121 additions & 0 deletions src/Libs/Gtk-4.0/Public/FontDialog.cs
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@@ -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;
}

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);
}
});

Internal.FontDialog.ChooseFace(
Handle,
parent.Handle,
fontFace?.Handle ?? IntPtr.Zero,
IntPtr.Zero,
callbackHandler.NativeCallback,
IntPtr.Zero
);

return tcs.Task;
}

//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;
}

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);
}
});

Internal.FontDialog.ChooseFamily(
Handle,
parent.Handle,
fontFamily?.Handle ?? IntPtr.Zero,
IntPtr.Zero,
callbackHandler.NativeCallback,
IntPtr.Zero
);

return tcs.Task;
}

//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);
}
}
});

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;
}
}
13 changes: 13 additions & 0 deletions src/Samples/Gtk-4.0/FontDialog/FontDialog.csproj
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<Project Sdk="Microsoft.NET.Sdk">

<ItemGroup>
<ProjectReference Include="..\..\..\Libs\Gtk-4.0\Gtk-4.0.csproj" />
</ItemGroup>

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<Nullable>enable</Nullable>
</PropertyGroup>

</Project>
45 changes: 45 additions & 0 deletions src/Samples/Gtk-4.0/FontDialog/Program.cs
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using System;

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);

var buttonSelectFont = Gtk.Button.New();
buttonSelectFont.Label = "Select Font";
buttonSelectFont.SetMarginTop(12);
buttonSelectFont.SetMarginBottom(12);
buttonSelectFont.SetMarginStart(12);
buttonSelectFont.SetMarginEnd(12);

var gtkBox = Gtk.Box.New(Gtk.Orientation.Vertical, 0);
gtkBox.Append(labelSelectedFont);
gtkBox.Append(buttonSelectFont);

var window = Gtk.ApplicationWindow.New((Gtk.Application) sender);
window.Title = "Gtk4 Window";
window.SetDefaultSize(300, 300);
window.Child = gtkBox;

buttonSelectFont.OnClicked += async (_, _) =>
{
try
{
var fontDialog = Gtk.FontDialog.New();
var selectedFont = await fontDialog.ChooseFontAsync(window, null);
labelSelectedFont.SetLabel(selectedFont?.ToString() ?? string.Empty);
}
catch (Exception ex)
{
//Prints "Dismissed by user" if dialog is cancelled
Console.WriteLine(ex.Message);
}
};

window.Show();
};
return application.RunWithSynchronizationContext(null);
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