forked from AuroraMiddleware/gtk
c63087a563
To build a better world sometimes means having to tear the old one down.
-- Alexander Pierce, "Captain America: The Winter Soldier"
ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:
- it maps to a very specific implementation, AT-SPI, which is Linux and
Unix specific
- it requires implementing the same functionality in three different
layers of the stack: AT-SPI, ATK, and GTK
- only GTK uses it; every other Linux and Unix toolkit and application
talks to AT-SPI directly, including assistive technologies
Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:
- add an "accessible" interface, implemented by GTK objects directly,
which describe the accessible role and state changes for every UI
element
- add an "assistive technology context" to proxy a native accessibility
API, and assign it to every widget
- implement the AT context depending on the platform
For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833
102 lines
3.1 KiB
XML
102 lines
3.1 KiB
XML
<?xml version="1.0"?>
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<!DOCTYPE partintro PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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]>
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<partintro>
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<para>
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GTK is a library for creating graphical user interfaces. It
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works on many UNIX-like platforms, Windows, and OS X.
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GTK is released under the GNU Library General Public License
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(GNU LGPL), which allows for flexible licensing of client
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applications. GTK has a C-based object-oriented architecture that
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allows for maximum flexibility. Bindings for many other languages have
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been written, including C++, Objective-C, Guile/Scheme, Perl, Python,
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TOM, Ada95, Free Pascal, and Eiffel. The GTK library itself contains
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<firstterm>widgets</firstterm>, that is, GUI components such as GtkButton
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or GtkTextView.
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</para>
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<para>
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GTK depends on the following libraries:
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<variablelist>
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<varlistentry>
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<term>GLib</term>
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<listitem><para>
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A general-purpose utility library, not specific to graphical user interfaces.
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GLib provides many useful data types, macros, type conversions,
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string utilities, file utilities, a main loop abstraction, and so on.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>GObject</term>
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<listitem><para>A library that provides a type system, a collection of
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fundamental types including an object type, a signal system.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>GIO</term>
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<listitem><para>A modern, easy-to-use VFS API including abstractions for
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files, drives, volumes, stream IO, as well as network programming and
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DBus communication.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>cairo</term>
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<listitem><para>Cairo is a 2D graphics library with support for multiple
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output devices.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>Pango</term>
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<listitem><para>
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Pango is a library for internationalized text handling. It centers
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around the PangoLayout object, representing a paragraph of text.
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Pango provides the engine for GtkTextView, GtkLabel, GtkEntry, and
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other widgets that display text.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>GdkPixbuf</term>
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<listitem><para>
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This is a small library which allows you to create GdkPixbuf
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("pixel buffer") objects from image data or image files.
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Use a GdkPixbuf in combination with GtkImage to display images.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>graphene</term>
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<listitem><para>
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This is a small library which provides vector and matrix datatypes
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and operations. graphene provides optimized implementations using
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various SIMD instruction sets such as SSE.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>GDK</term>
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<listitem><para>
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GDK is the abstraction layer that allows GTK to support multiple
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windowing systems. GDK provides window system facilities on Wayland,
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X11, Windows, and OS X.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>GSK</term>
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<listitem><para>
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GSK is a library for creating a scene graph from render nodes,
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and rendering it using different rendering APIs. GSK provides renderers
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for OpenGL, Vulkan and cairo.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</para>
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</partintro>
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