GTK+
GTK+
Original author(s) | Spencer Kimball, Peter Mattis |
---|---|
Developer(s) | The GNOME Project, eXperimental Computing Facility (XCF) |
Initial release | April 14, 1998 (1998-04-14) |
Stable release | |
Preview release | |
Repository |
|
Written in | C, CSS[3] |
Operating system | Linux, Unix-like, macOS, Windows |
Type | Widget toolkit |
License | LGPLv2.1+ |
Website | gtk.org [119] |
Developer(s) | Xamarin |
Initial release | March 12, 2004 (2004-03-12) |
Stable release | 2.12.41[17]
/ September 22, 2016 (2016-09-22) |
Preview release | 2.99.3[18]
/ June 6, 2014 (2014-06-06) |
Repository |
|
Written in | C#, XML, Perl, C |
Operating system | Windows, macOS, Linux |
Type | Widget toolkit |
License | GNU Lesser General Public License |
Website | mono-project.com/GtkSharp [125] |
GTK (formerly GTK+[4], GIMP Toolkit) is a free and open-source cross-platform widget toolkit for creating graphical user interfaces (GUIs).[5] It is licensed under the terms of the GNU Lesser General Public License, allowing both free and proprietary software to use it. Along with Qt, it is one of the most popular toolkits for the Wayland and X11 windowing systems.[6]
Original author(s) | Spencer Kimball, Peter Mattis |
---|---|
Developer(s) | The GNOME Project, eXperimental Computing Facility (XCF) |
Initial release | April 14, 1998 (1998-04-14) |
Stable release | |
Preview release | |
Repository |
|
Written in | C, CSS[3] |
Operating system | Linux, Unix-like, macOS, Windows |
Type | Widget toolkit |
License | LGPLv2.1+ |
Website | gtk.org [119] |
Developer(s) | Xamarin |
Initial release | March 12, 2004 (2004-03-12) |
Stable release | 2.12.41[17]
/ September 22, 2016 (2016-09-22) |
Preview release | 2.99.3[18]
/ June 6, 2014 (2014-06-06) |
Repository |
|
Written in | C#, XML, Perl, C |
Operating system | Windows, macOS, Linux |
Type | Widget toolkit |
License | GNU Lesser General Public License |
Website | mono-project.com/GtkSharp [125] |
Software architecture
Simplified software architecture of GTK. Pango, GDK, ATK, GIO, Cairo and GLib
GDK contains back-ends to X11, Wayland, Broadway (HTTP), Quartz, and GDI and relies on Cairo for the rendering. Its new SceneGraph is work-in-progress.
The GTK library contains a set of graphical control elements (widgets), version 3.22.16 contains 186 active and 36 deprecated widgets.[7] GTK is an object-oriented widget toolkit written in the programming language C; it uses GObject, that is the GLib object system, for the object orientation. While GTK is mainly for windowing systems based on X11 and Wayland, it works on other platforms, including Microsoft Windows (interfaced with the Windows API), and macOS (interfaced with Quartz). There is also an HTML5 back-end named Broadway[8][9].
GTK can be configured to change the look of the widgets drawn; this is done using different display engines. Several display engines exist which try to emulate the look of the native widgets on the platform in use.
Starting with version 2.8, released in 2005, GTK began the transition to using Cairo to render most of its graphical control elements widgets.[10] Since GTK version 3.0, all the rendering is done using Cairo.
On 2018-Jan-26 at DevConf.cz Matthias Clasen gave an overview of the current state of GTK 4 development, including a high-level explanation of how rendering and input worked in GTK 3, what changes are being made in GTK 4 (>3.90), and why.[11] In February it was announced that GTK 4 will drop the “+” from the project's name.[4]
GIMP Drawing Kit (GDK)
GDK acts as a wrapper around the low-level functions provided by the underlying windowing and graphics systems.
GDK is found in the /gdk [120] directory.
GTK Scene Graph Kit (GSK)
GSK is the rendering and scene graph API for GTK. GSK lies between the graphical control elements (widgets) and the rendering. GSK was finally merged into GTK+ version 3.90 released March 2017.
GSK is found in the /gsk [121] directory.
GtkInspector
GUI designers
There are several GUI designers for GTK. The following projects are active as of July 2011:
GtkBuilder
GtkBuilder allows user interfaces to be designed without writing code. The interface is described in an Extensible Markup Language (XML) file, which is then loaded at runtime and the objects created automatically. The Glade Interface Designer allows creation of the user interface in a what you see is what you get (WYSIWYG) manner. The description of the user interface is independent from the programming language being used.
Language bindings
A library written in one programming language may be used in another language if bindings are written; GTK has a range of bindings for various languages.[16]
Gtk#
Gtk# is a set of .NET Framework bindings for the GTK graphical user interface (GUI) toolkit and assorted GNOME libraries. The library facilitates building graphical GNOME applications using Mono or any other compliant Common Language Runtime (CLR). Gtk# is an event-driven system like any other modern windowing library where every widget allows associating handler methods, which get called when certain events occur.
Applications built using Gtk# will run on many platforms including Linux, Windows and macOS. The Mono packages for Windows include GTK, Gtk# and a native theme to make applications look like native Windows applications. Starting with Mono 1.9, running Gtk# applications on macOS no longer requires running an X11 server.[19]
Glade Interface Designer can be used with the Glade# bindings to easily design GUI applications. A GUI designer named Stetic is integrated with the MonoDevelop integrated development environment (IDE).
In addition to support the standard GTK/GNOME stack of development tools, the gtk-dotnet.dll assembly provides a bridge to consume functionality available on the .NET stack. At this point this includes the functionality to use System.Drawing to draw on a widget.
GtkSourceView
For syntax highlighting there is GtkSourceView, "source code editing widget".
GtkSourceView is maintained separately from GTK as a library: gtksourceview [126] . There are plans to rename to gsv.
GtkSpell
GtkSpell is a distinct library separate to GTK. GtkSpell depends on GTK and Enchant. Enchant is a wrapper for ispell, hunspell, etc, the actual spell checker engine/software. GtkSpell uses GTK's GtkTextView widget, to highlight misspelled words and offer replacement.
gtkspell.sourceforge.net [127]
Development
GTK is mainly developed by The GNOME Project, which also develops the GNOME Development Platform and the GNOME Desktop Environment.[20]
GTK development is loosely managed. Discussion chiefly occurs on several public mailing lists.[21] GNOME developers and users gather at an annual GNOME Users And Developers European Conference GUADEC meeting to discuss GNOME's current state and future direction.[22] GNOME incorporates standards and programs from freedesktop.org to better interoperate with other desktops.
GTK is mainly written in C.[23] Many language bindings are available.
On September 1, 2016 a post on the GTK development blog denoted, among other things, the future numbering scheme of GTK.[24] GTK version 3.22 from autumn 2016 shall be the last 3.x release. After that all resources will move to the GTK 4 development series with the version names 3.90, 3.92, etc. Even as the 4.x series enters development, notable applications still use GTK 2.x and have not been ported to 3.22. Regarding the future of legacy software using GTK+, there is no collective project to port GTK 2.x software to 3.22.
Build automation
In former times GTK (and GNOME, GLib, etc.) utilized the GNU Build System (named Autotools) as the build automation system of choice.
Since 14 Aug 2017, the master branch of GTK builds with Meson, and the Autotools build system files have been dropped.[25]
Criticism
The most common criticism of GTK is the lack of backward-compatibility in major updates, most notably in the application programming interface (API)[26] and theming.[27]
The compatibility breaks between minor releases during the GTK 3.x development cycle was explained by Benjamin Otte as due to strong pressures to innovate, such as providing the features modern users expect and supporting the increasingly influential Wayland display server protocol. With the release of GTK 4, the pressure from the need to innovate will have been released and the balance between stability and innovation will tip toward stability.[28] Similarly, recent changes to theming are specifically intended to improve and stabilise that part of the API, meaning some investment now should be rewarded later.
Dirk Hohndel, codeveloper of Subsurface and member of Intel's Open-Source Technology Center, criticized the GTK developers for being abrasive and ignoring most community requests.[29]
Hong Jen Yee, developer of LXDE (the GTK version of which will be dropped and all efforts focused on the Qt port[30]), expressed disdain for version 3 of the GTK toolkit's radical API changes and increased memory usage, and ported PCMan File Manager (PCManFM) to Qt. PCManFM is being developed with a GTK and with a Qt backend at the same time.[31]
The Audacious music player moved to Qt in version 3.6.[32] The reasons stated by the developers for this include a transition to client-side window decorations, which they claim cause the application to look "GNOME-y and out of place."[33]
Wireshark has switched to Qt due to not having a good experience with GTK's cross-platform support.[34]
Use
Applications
Some notable applications that use or once used GTK as a widget toolkit include:
GNOME Core Applications – as part of GNOME desktop environment, developed in concert with GTK itself.
AbiWord – Word processor
Anjuta – Integrated development environment (IDE)
Ardour – Digital audio workstation
Chromium – Web browser (Until version 34, replaced by Aurora in version 35+)
Ekiga (formerly GnomeMeeting) – VoIP and video conferencing application
GNU Emacs can use GTK when running on X.
Evolution – Personal information manager
gconfig – Linux kernel source configuration utility.
Geany – a lightweight cross-platform IDE and GTK text editor based on Scintilla.
GIMP – Raster graphics editor
Gnumeric – Spreadsheet application
Gramps – Genealogy software
Inkscape – Vector graphics editor for SVG
LiVES – Video editor
Midori – Minimalistic web browser using GTKWebKit as rendering engine and GTK as widget toolkit
Pidgin – Instant messenger application
Desktop environments
Several desktop environments utilize GTK as the widget toolkit.
Current
Phosh
GNOME, based on GTK, meaning that programs native to GNOME use GTK
Budgie, built from scratch for the SolusOS successor, Solus Operating System
Cinnamon, a fork of GNOME 3 and uses GTK version 3
MATE, a fork of GNOME 2, which was initially built using GTK 2, but as of version 1.18, has been updated to use only GTK 3.
Xfce, currently based on GTK 3, after migration from GTK 2. xfce4-14 [128]
Pantheon uses GTK 3 exclusively, being developed by elementary OS
Sugar, a desktop environment for youth primary education, which uses GTK, especially PyGTK
KDE, though based on Qt, has integration with GTK written programs and themes since version 4.2
Phosh, a mobile UI designed for PureOS
Inactive
Unity, the former default desktop environment of Ubuntu
LXDE (Lightweight X11 Desktop Environment) is based on GTK 2
Access Linux Platform (successor of the Palm OS PDA platform)
Consort, the GNOME 3.4 Fallback Mode – fork from SolusOS
GPE, the GPE Palmtop Environment
ROX Desktop, a lightweight desktop, with features from the GUI of RISC OS
Miscellaneous
GTK programs can be run on desktop environments based on X11 and Wayland, or window managers even those not made with GTK, provided the needed libraries are installed; this includes macOS if X11.app is installed. GTK can be also run on Microsoft Windows, where it is used by some popular cross-platform applications like Pidgin and GIMP. wxWidgets, a cross-platform GUI tool-kit, uses GTK on Linux.[35] Other ports include DirectFB (used by the Debian installer, for example) and ncurses.[36]
Window managers
The following window managers use GTK:
Aewm
AfterStep
Amaterus
Consortium
IceWM
Marco
Metacity
Muffin
Mutter
Sawfish
Wmg
Xfwm
Example
Documentation is available here:
developer.gnome.org/gtk3/stable/ [129]
The following code presents a graphical GTK hello-world program in the C programming language. This program has a window with the title "Hello, world!" and a label with similar text.
Needs installing the libraries first in debian or derivatives:
$ sudo apt-get install libgtk-3-dev
Using pkg-config in a Unix shell, this code can be compiled with the following command:
$ cc -Wall pkg-config --cflags gtk+-3.0
-o helloworld helloworld.c pkg-config --libs gtk+-3.0
Invoke the program
$ ./helloworld
History
Linux/Unix
GTK was originally designed and used in the GNU Image Manipulation Program (GIMP) as a replacement of the Motif toolkit; at some point Peter Mattis became disenchanted with Motif and began to write his own GUI toolkit named the GIMP toolkit and had successfully replaced Motif by the 0.60 release of GIMP.[37] Finally GTK was re-written to be object-oriented and was renamed GTK+.[38] This was first used in the 0.99 release of GIMP. GTK was subsequently adopted for maintenance by the GNOME Foundation, which uses it in the GNOME desktop environment.
The GTK 2.0.0 release series introduced new features which include improved text rendering using Pango, a new theme engine, improved accessibility using the Accessibility Toolkit, transition to Unicode using UTF-8 strings, and a more flexible API. Starting with version 2.8, GTK 2 depends on the Cairo graphics library for rendering vector graphics.
GTK version 3.0.0 included revised input device handling, support for themes written with CSS-like syntax, and the ability to receive information about other opened GTK applications.
The '+' was dropped returning to simply 'GTK' in February 2019 during a Hackathon[39]
Windows
After GTK 2.24.10 and 3.6.4 Development of Windows with Installer was closed by Gnome. Installation of MSYS2 on Windows is a good way to use actual GTK.[42]
GTK 2.24.10 and 3.6.4 is available in Internet, but very buggy and limited against actual versions.[43][44]
A Version for Windows 64-bit is prepared by Tom Schoonjans with 2.24.32 (actual like Linux) and 3.22.30 (actual like Linux) available.[45]
Windows 10's Fall Creators Update includes Windows Subsystem for Linux (WSL). With Linux distributions like Ubuntu or Debian available from the Windows Store and an X server like Xming or VcXsvr, thousands of programs like GTK 2 or 3 can run with X or terminal support.
OpenVMS
4.x
One of the cardinal novelties implemented during the GTK 4 development cycle (i.e. GTK 3.92, etc.) has been the delegation of functionality to ancillary objects instead of encoding it into the base classes provided by GTK.
the event handling from signal handlers described by GtkWidget is delegated to event controllers
the rendering is delegated to GtkSnapshot objects
the layout mechanism from GtkWidget is delegated to GtkLayoutManager
In 2018-Jan-26 at DevConf.cz Matthias Clasen gave an overview of the then current state of GTK 4 development, including a high-level explanation of how rendering and input worked in GTK 3, what changes were being made to GTK 4, and the reasons for those changes. Examples of things that have become possible with GTK 4 were given as well.[48]
Releases
Release history | |||||||
---|---|---|---|---|---|---|---|
Release series | Initial release | Major enhancements | Latest minor version | ||||
Old version, no longer supported:1.0 | 1998-04-13[49] | First stable version | 1.0.6 [130] | ||||
Old version, no longer supported:1.2 | 1999-02-25[50] | New widgets (GtkFontSelector, GtkPacker, GtkItemFactory, GtkCTree, GtkInvisible, GtkCalendar, GtkLayout, GtkPlug, GtkSocket) | 1.2.10 [131] | ||||
Legend: Old version Older version, still supported Latest version Latest preview version Future release | |||||||
GTK+ 2 | |||||||
Old version, no longer supported:2.0 | 2002-03-11[51] | GObject, overall support for UTF-8 | 2.0.9 [132] | ||||
Old version, no longer supported:2.2 | 2002-12-22[52] | Multihead support | 2.2.4 [133] | ||||
Old version, no longer supported:2.4 | 2004-03-16[53] | New widgets (GtkFileChooser, GtkComboBox, GtkComboBoxEntry, GtkExpander, GtkFontButton, GtkColorButton) | 2.4.14 [134] | ||||
Old version, no longer supported:2.6 | 2004-12-16[54] | New widgets (GtkIconView, GtkAboutDialog, GtkCellView). The last to support Windows 98/Me | 2.6.10 [135] | ||||
Old version, no longer supported:2.8 | 2005-08-13[55] | Most widgets are rendered by Cairo. | 2.8.20 [136] | ||||
Old version, no longer supported:2.10 | 2006-07-03[56] | New widgets (GtkStatusIcon, GtkAssistant, GtkLinkButton, GtkRecentChooser) and print support (GtkPrintOperation) | 2.10.14 [137] | ||||
Old version, no longer supported:2.12 | 2007-09-14[57] | GtkBuilder | 2.12.12 [138] | ||||
Old version, no longer supported:2.14 | 2008-09-04[58] | JPEG 2000 load support | 2.14.7 [139] | ||||
Old version, no longer supported:2.16 | 2009-03-13[59] | New widget (GtkOrientable), Caps Lock warning in password entry. Improvements on GtkScale, GtkStatusIcon, GtkFileChooser. | 2.16.6 [140] | ||||
Old version, no longer supported:2.18 | 2009-09-23[60] | New widget (GtkInfoBar). Improvement on file chooser, printing. To remove much of the necessary IPC between the X11 application and the X11 server, GDK is rewritten (mainly by Alexander Larsson) to use "client-side windows", i.e., the GdkWindow, which every widget must have, belongs now to the client. | 2.18.9 [141] | ||||
Old version, no longer supported:2.20 | 2010-03-23[61] | New widgets (GtkSpinner, GtkToolPalette, GtkOffscreenWindow). Improvement on file chooser, keyboard handling, GDK. Introspection data is now included in GTK. | 2.20.1 [142] | ||||
Old version, no longer supported:2.22 | 2010-09-23[62] | GdkPixbuf moved to separate module, most GDK drawing are based on Cairo, many internal data are now private and can be sealed in preparation to GTK 3. | 2.22.1 [143] | ||||
Older version, yet still supported:2.24 | 2011-01-30[63] | New widget (GtkComboBoxText), the CUPS print backend can send print jobs as PDF, GtkBuilder has gained support for text tags and menu toolbuttons and many introspection annotation fixes were added. migrating from GTK+ 2.x to GTK+ 3 [144] | 2.24.32 [145] (2018-01-08) | ||||
Legend: Old version Older version, still supported Latest version Latest preview version Future release | |||||||
GTK+ 3 | |||||||
Old version, no longer supported:3.0 | 2011-02-10[64] | Development and design of the GTK 3 release of the toolkit started in February 2009 during the GTK Theming Hackfest held in Dublin.[65] The first draft of the development roadmap was released on 9 April 2009.[66] completed mostly Project Ridley, the attempt to consolidate several libraries that were external to GTK+, including libgnome ,libgnomeui ,libgnomeprint22 ,libgnomeprintui22 ,libglade ,libgnomecanvas ,libegg ,libeel ,gtkglext , andlibsexy .[67]all the rendering is done using Cairo; GDK became more X11 agnostic, XInput2, theme API is based on Cascading Style Sheets (CSS), worsening the achievable performance for 60 Hz frame rates | 3.0.12 [146] | ||||
Old version, no longer supported:3.2 | 2011-09-25[68] | New widgets (GtkLockButton, GtkOverlay), New Font Chooser dialog; new experimental backends (Wayland, HTML5 (named "Broadway")); | 3.2.4 [147] | ||||
Old version, no longer supported:3.4 | 2012-03-26[69] | Menu support in GtkApplication, a new color chooser, added support for touch devices, added support for smooth scrolling, GtkScrolledWindow will do kinetic scrolling with touch devices, macOS support is improved. This is the first version of GTK 3 that works well on Windows. The Wayland backend is updated to the current Wayland version Spin buttons have received a new look. Accessibility: the treeview accessible support is rewritten More complete CSS Theming support | 3.4.4 [148] | ||||
Old version, no longer supported:3.6 | 2012-09-24[70] | GtkSearchEntry, GtkMenuButton, GtkLevelBar. Vertical spin buttons. CSS animations, blur shadows. Support for cross-fading and transitions in themes. | 3.6.5 [149] | ||||
Old version, no longer supported:3.8 | 2013-03-25[71] | Wayland 1.0 stable support, support for the broadwayd server, improved theming, better geometry management, touch improvements, support with the window manager for the frame synchronization protocol; GdkFrameClock added[72] | 3.8.9 [150] | ||||
Old version, no longer supported:3.10 | 2013-09-23[73] | New widgets (GtkHeaderBar, GtkPlacesSidebar, GtkStack, GtkStackSwitcher, GtkRevealer, GtkSearchBar, GtkListBox). Support for Wayland 1.2 (maximization, animated cursors, multiple monitors, settings, custom surfaces and frame synchronization) Added: client-side decorations, scaled output support on high-dpi screens, fine-adjustment mode for scrolling. Removed: support for the Motif DND protocol, support for multiple screens per display, gdk_window_get_display, gtk_widget_push_composite_child, Tear-off menu-items, plus many GTK+ settings. The modern GTK drawing model [151] | 3.10.9 [152] | ||||
Old version, no longer supported:3.12 | 2014-03-25[74] | GTK 3.12 introduced client-side decorations,[75] support for Wayland 1.5; new widgets: (GtkPopover, an alternative to menus and dialogs) | 3.12.2 [153] | ||||
Old version, no longer supported:3.14 | 2014-09-22[76] | GtkInspector (a copy of gtkparasite) introduced;[77][78] improved support for gestures/multi-touch merged[79][80] Deprecate: GtkMisc, GtkAlignment, GtkArrow, GdkColor, Style regions, support for .icon files, gdk_window_flush, drawing outside of begin/end paint.[81] Most widgets converted to use gestures internally, Wayland supports GNOME Shell classic modus.[82] | 3.14.15 [154] | ||||
Old version, no longer supported:3.16 | 2015-03-22[83] | GDK supports rendering windows using OpenGL for X11 and Wayland using libepoxy, new widgets (GtkGLArea, GtkStackSidebar, GtkModelButton, GtkPopoverMenu), scrolling overhauled (Scrollbar hidden by default[84]), experimental Mir backend[85] | 3.16.7 [155] | ||||
Old version, no longer supported:3.18 | 2015-09-23[86] | Add CSS node infrastructure, More filechooser design refresh and Better filechooser search, Dropped Windows XP support, Model support for list and flow box, Kinetic touchpad scrolling, Touchpad gestures (Wayland), gtk-builder-tool utility, Output-only windows | 3.18.9 [156] | ||||
Old version, no longer supported:3.20 | 2016-03-21[87] | Further Integration of CSS nodes,[88] move drag and drop down to GDK, New widgets: GtkShortcutsWindow [157] : shows keyboard shortcuts and gestures of an application | 3.20.10 [158] | ||||
Older version, yet still supported:3.22 | 2016-09-21[89] | last 3.x released[24] GTK+ Wayland tablet support is merged;[90] Support for graphics tablets is considered feature complete[91] GTK 3.22 shall be as rock-stable (and hence "boring") as GTK 2[28][92][93] | for 3+ years 3.22.29 [159] | ||||
Current stable version:**3.24** | 2018-09-03[94] | 3.22 was supposed to be the very last version of GTK 3 series. 3.24 was mainly released to **ease migrating from GTK+ 3.x to GTK+ 4 [160] **! Dependency bumps: Require libepoxy 1.4, and pango 1.41 New font chooser features: Allow setting OpenType font features, Show examples for OpenType font features, Allow selecting OpenType font variations, Support levels of details for selection New Emoji features: Support a completion popup for Emoji, Drop Ctrl-Shift-e shortcut Other new apis: gdk_window_move_to_rect Wayland: Use anonymous shared memory on FreeBSD Backported event controllers from GTK 4: GtkEventControllerScroll, GtkEventControllerMotion, GtkEventControllerKey, GtkGestureStylus Deprecate a few APIs that are gone in GTK 4: focus chains in GtkContainer and stepper sensitivity in GtkRange | 3.23.0 [161] 3.23.1 [162] 3.23.2 [163] 3.23.3 [164] 3.24.0 [165] …3.24.5 [166] | ||||
Legend: Old version Older version, still supported Latest version Latest preview version Future release | |||||||
GTK 4 development series | |||||||
Old version, no longer supported:3.90 | 2017-03-31[95] | merge (GTK+ Scene Graph Kit (GSK))[96] remove any API marked as deprecated: before (2016-09-22) [167] vs. after [168] heavy development, break API&ABI.[92][93] A new Vulkan-renderer augments the old Cairo-renderer[97] | 3.89.1 [169] 3.89.2 [170] 3.89.4 [171] 3.89.5 [172] 3.90 [173] | ||||
Old version, no longer supported:3.92 | 2017-10-18[98][99] | As GNOME 3.26 was released already on September, 13th. [100] it is not based on GTK 3.92! Please browse the git-history to determine what hindered GTK to release early enough for the latest GNOME to be based on it: https://git.gnome.org/browse/gtk+/ [174] GNU autotools was replaced with Meson; | 3.91.0 [175] 3.91.1 [176] 3.91.2 [177] 3.92.1 [178] | ||||
Old version, no longer supported:3.94 | 2018-06-26[101] | 3.93: GdkScreen, GdkVisual removed, GdkDeviceManager replaced by GdkSeat, Clipboard handling is moved from GTK to GDK, GdkEvent is converted to an opaque GObject, The GL renderer in GSK is substantially completed, and is now on par with the Vulkan renderer, The use of GdkPixbuf in APIs is reduced, and the GskTexture object is moved to GDK as GdkTexture, to take its place, The Wayland backend now implements the KDE server-side decoration protocol, Broadway is ported to GSK, … GdkWindow is renamed to GdkSurface new powerful abstraction for drawable content: GdkPaintable There is support for displaying media, with: GtkVideo, GtkMediaFile, GtkMediaStream and GtkMediaControls | 3.93 [179] 3.94.0 [180] | ||||
Latest preview version of a future release:3.96 | 2019-05-07[2] | The gtk4-builder-tool 'simplify' command has gained a --3to4 option to convert GTK3 ui files to GTK4. GtkWidget can now use a GtkLayoutManager for size allocation. Layout managers can optionally use layout children holding layout properties. GtkBinLayout, GtkBoxLayout, GtkGridLayout, GtkFixedLayout and GtkCustomLayout are currently available, more layout manager implementations will appear in the future. Focus handling has been rewritten, and focus-change event generation has been unified with crossing events. Events have been simplified and are just used for input
| |||||
Future release:4.0 | 2020 autumn[102] | remove any API marked as deprecated, i.e. at least everything in the deprecated [181] directory | |||||
Legend: Old version Older version, still supported Latest version Latest preview version Future release |
The GNOME team releases new versions on a regular basis.[96]
See also
Client-Side Decoration
List of widget toolkits
GDK – the GIMP Drawing Kit lies between the xlib and the GTK library, handling basic rendering such as drawing primitives, raster graphics (bitmaps), cursors, fonts, as well as window events and drag-and-drop functionality
gtkmm – C++ bindings for GTK
Qt - cross platform framework and toolkit
Xojo - cross-platform development tool and framework
Enlightenment Foundation Libraries (EFL) – widget toolkit written for the Enlightenment window manager
FLTK – A light, cross-platform, non-native widget toolkit
FOX toolkit – A fast, open source, cross-platform widget toolkit
IUP – a multi-platform toolkit for building native graphical user interfaces
Ultimate++
Visual Component Library (VCL)