Gnome Platform

The GNOME Platform

Carlos García Campos

[email protected]

Carlos García Campos The GNOME Platform

Language

The C Programming Language

But there are also bindings . . .

C++

Python

Perl

Java

Mono

Not officially: Ruby, PHP, ...


The GNOME platform stack


GLib

Low-level core library

PortabilityThree main libraries

GLibGObjectGio


GLib

Abstract Data Types (list, queue, hash table, ...)

String manipulation

Memory allocation

Dynamics loadable modules

Main loop abstraction

Regexp

Threads


GObject

Type system

Signal system

Object Oriented Programming features (inheritance,polymorphism, data abstraction, etc.)

Interfaces


Gio

Modern, easy-to-use VFS API (less POSIX)

Replaces GNOME-VFS but in the right place of the stack

Uses GObject

Statefull I/O model

Based on interfaces

Allow use of the vfs in GTK+


cairo

2D graphics library

FreedesktopMultiple output devices

X Window SystemImage bufferSVGPostScriptPDF

Modern API

Good community

Dual license: LGPL/MPL


GDK

Low level library for interaction with the window system andinput devices

Drawing primitives

Pixbufs

Selections

Drag and Drop

GDK Pixbuf


Pango

Layout and rendering of text

Emphasis on internationalization

Integrated with cairo


Pango


GTK+

The GIMP ToolKit

Main GNOME library for creating graphical user interfaces

Depends on: GLib, Pango, GDK and ATK

Basic Widgets (Buttons, windows, menus, etc.)

Complex widgets (Tree views, text views, etc.)

Printing system

Recently used documents

Interface builder (replaces libglade)


GVFS

Support for non local files

Mount daemons implement GFile operations

Main daemon starts and manages the mount daemon

Communication via D-BusBackends

HTTPWebDavSSH/SFTPSMBFTP...


Gio/GVFS in the stack


Accesibility

ATK: Set of interfaces providing accessibility

AT-SPI: Interface definitions and IPC stuff

Gail: Implements ATK object for widgets in GTK+ (GTK+module)


Gnome Platform

Business

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