89cfd16c10
The API contract between GObject-Introspection and bindings is that functions returning transfer-none floating references pass a reference to the bindings that should be taken ownership of by sinking it. Not doing so is wrong and will lead to memory leaks or double frees. Previously we would not distinguish this case and simply increment the reference count. In addition we would then sink the floating reference when the Object.Raw field is set later for InitiallyUnowned subclasses. Remove that last part and instead check directly in Object.Raw.set if we get a floating reference and if so simply sink it here and take ownership of it. The general assumption of Object.Raw.set is that it gets passed a reference that it should take ownership of. So in summary: 1) GetObject() would only increase the reference count of unowned, non-floating references so that we own it. For unowned, floating references it assumes ownership of the reference. 2) Raw.set assumes ownership of the reference passed to it and if it happens to be a floating reference then it will first sink it. Also warn if we get a floating, owned reference passed to GetObject() as that case is not allowed by GObject-Introspection and would cause the reference to be leaked. This fixes a memory leak with functions returning unowned, floating references and with functions returning owned, non-floating references of InitiallyUnowned subclasses. And at the same time keeps constructors for InitiallyUnowned subclasses working correctly without leaks. See https://gitlab.freedesktop.org/gstreamer/gstreamer-sharp/issues/31 |
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| CakeScripts | ||
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| build.cake | ||
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GtkSharp
GtkSharp is a C# wrapper for Gtk and its related components. The component list includes the following libraries: glib, gio, cairo, pango, atk, gdk. This is a fork of https://github.com/mono/gtk-sharp and is maintained completly separatly from that project.
Differences can be seen with the following table:
| Target framework | Target Gtk Version | Extra notes | |
|---|---|---|---|
| GtkSharp | .NET Standard 2.0 | Gtk 3.22 | Does not need glue libraries. |
| mono/gtksharp | .NET Framework 4.5 | Gtk 2 (also Gtk 3.0 but never officially released) |
Building from source
Pre requirements for building from source are that you have .Net Core and msbuild installed on the system.
To build the repository, first clone it:
git clone https://github.com/GtkSharp/GtkSharp.git
cd GtkSharp
and then simply run either .\build.ps1 or ./build.sh depending your operating system. If you have Cake installed as a .NET global tool just run dotnet-cake.
If you wish to generate the nuget packages simply add the --BuildTarget=PackageNuGet as an argument when calling the build script.
A breakdown on how the source is structured:
- Tools that are needed to generate wrapper code are found in Tools folder
- The actual wrappers code is found in Libs folder
- Templates are located in Templates folder
- Build script is separated between build.cake and CakeScripts folder
Using the library
On macOS, you'll need to manually install Gtk, see Installing Gtk on Mac wiki page for more details on how to do it.
Available NuGet packages:
To create a new gtk app project, simply use dotnet new templating engine:
- install:
dotnet new --install GtkSharp.Template.CSharp - uninstall:
dotnet new --uninstall GtkSharp.Template.CSharp - generate project:
dotnet new gtkapp
License
GtkSharp and its related components are licensed under LGPL v2.0 license, while Samples are licenced under The Unlicense.