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Truly independent web browser
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Rodrigo Tobar cb04e4e9da LibPDF: Refactor *Font classes 
The PDFFont class hierarchy was very simple (a top-level PDFFont class,
followed by all the children classes that derived directly from it).
While this design was good enough for some things, it didn't correctly
model the actual organization of font types:

 * PDF fonts are first divided between "simple" and "composite" fonts.
   The latter is the Type0 font, while the rest are all simple.
 * PDF fonts yield a glyph per "character code". Simple fonts char codes
   are always 1 byte long, while Type0 char codes are of variable size.

To this effect, this commit changes the hierarchy of Font classes,
introducing a new SimpleFont class, deriving from PDFFont, and acting as
the parent of Type1Font and TrueTypeFont, while Type0 still derives from
PDFFont directly. This distinction allows us now to:

 * Model string rendering differently from simple and composite fonts:
   PDFFont now offers a generic draw_string method that takes a whole
   string to be rendered instead of a single char code. SimpleFont
   implements this as a loop over individual bytes of the string, with
   T1 and TT implementing draw_glyph for drawing a single char code.
 * Some common fields between T1 and TT fonts now live under SimpleFont
   instead of under PDFfont, where they previously resided.
 * Some other interfaces specific to SimpleFont have been cleaned up,
   with u16/u32 not appearing on these classes (or in PDFFont) anymore.
 * Type0Font's rendering still remains unimplemented.

As part of this exercise I also took the chance to perform the following
cleanups and restructurings:

 * Refactored the creation and initialisation of fonts. They are all
   centrally created at PDFFont::create, with a virtual "initialize"
   method that allows them to initialise their inner members in the
   correct order (parent first, child later) after creation.
 * Removed duplicated code.
 * Cleaned up some public interfaces: receive const refs, removed
   unnecessary ctro/dtors, etc.
 * Slightly changed how Type1 and TrueType fonts are implemented: if
   there's an embedded font that takes priority, otherwise we always
   look for a replacement.
 * This means we don't do anything special for the standard fonts. The
   only behavior previously associated to standard fonts was choosing an
   encoding, and even that was under questioning.
2023-02-24 20:16:50 +01:00
.devcontainer Meta: Add libssl-dev as a dependency to the devcontainer 2022-12-16 01:04:11 -07:00
.github CI+Lagom: Use the same options for running test-wasm in ctest and CI 2023-02-24 00:02:25 -07:00
AK LibGfx: Add scaffolding for a webp decoder 2023-02-24 19:44:20 +01:00
Base Base: Add more emoji 2023-02-24 19:49:40 +01:00
Documentation Documentation: Fix Ladybird debug instructions 2023-02-14 19:38:29 +01:00
Kernel Kernel: Prevent out-of-bounds read/write in VirtIO GPU3DDevice::ioctl 2023-02-23 09:33:54 +00:00
Ladybird Ladybird: Consider HTTP response a success if it has a status code 2023-02-24 19:15:49 +01:00
Meta LibUnicode: Generate the path to emoji images alongside emoji data 2023-02-24 19:48:47 +01:00
Ports Ports: Update curl to 7.88.1 2023-02-24 19:20:53 +01:00
Tests LibGfx+Tests: Add test for webp ICC loading and fix bug 2023-02-24 20:13:52 +01:00
Toolchain Toolchain: Add fuse2fs to serenity.nix 2023-02-11 00:06:55 +01:00
Userland LibPDF: Refactor *Font classes 2023-02-24 20:16:50 +01:00
.clang-format Meta: Switch to clang-format-15 as the standard formatter 2022-12-03 23:52:23 +00:00
.clang-tidy Meta: Disable readability-use-anyofallof clang-tidy check 2022-01-09 23:29:57 -08:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes Repository: Protect port patches from CRLF/LF normalization 2022-01-12 01:08:38 +01:00
.gitignore Meta: Ignore vim's .exrc config 2022-10-06 16:06:50 +01:00
.mailmap Meta: Add mattco98's full name to mailmap 2022-11-23 17:13:49 +00:00
.pre-commit-config.yaml Meta: Add a post-commit commit message linter hook 2021-05-02 16:28:01 +02:00
.prettierignore LibJS: Add DisposableStack{, Prototype, Constructor} 2023-01-23 09:56:50 +00:00
.prettierrc Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
.ycm_extra_conf.py Meta: Remove i686 references in YCM configuration 2022-12-28 11:53:41 +01:00
azure-pipelines.yml CI: Remove extraneous toolchain job from Azure CI 2022-12-28 15:26:12 -05:00
CMakeLists.txt Meta+CMake: Extract Wasm spec tests into the binary directory 2022-12-14 20:29:43 +03:30
CONTRIBUTING.md Meta: Add Jelle Raaijmakers to list of project maintainers :^) 2023-01-05 00:32:05 +01:00
LICENSE Meta: Update the year range in LICENSE :^) 2023-01-01 09:38:07 +00:00
README.md Meta: Use proper abbreviation for WebAssembly in README 2023-02-06 10:46:34 +01:00
SECURITY.md Meta: Add a security policy 2022-06-29 03:29:27 +00:00

README.md

SerenityOS

Graphical Unix-like operating system for x86-64 computers.

GitHub Actions Status Azure DevOps Status Fuzzing Status Sonar Cube Static Analysis Discord

About

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.

You can watch videos of the system being developed on YouTube:

FAQ: Frequently Asked Questions

Screenshot

Screenshot as of b36968c.png

Features

  • Modern x86 64-bit kernel with pre-emptive multi-threading
  • Browser with JavaScript, WebAssembly, and more (check the spec compliance for JS, CSS, and Wasm)
  • Security features (hardware protections, limited userland capabilities, W^X memory, pledge & unveil, (K)ASLR, OOM-resistance, web-content isolation, state-of-the-art TLS algorithms, ...)
  • System services (WindowServer, LoginServer, AudioServer, WebServer, RequestServer, CrashServer, ...) and modern IPC
  • Good POSIX compatibility (LibC, Shell, syscalls, signals, pseudoterminals, filesystem notifications, standard Unix utilities, ...)
  • POSIX-like virtual file systems (/proc, /dev, /sys, /tmp, ...) and ext2 file system
  • Network stack and applications with support for IPv4, TCP, UDP; DNS, HTTP, Gemini, IMAP, NTP
  • Profiling, debugging and other development tools (Kernel-supported profiling, detailed program analysis with software emulation in UserspaceEmulator, CrashReporter, interactive GUI playground, HexEditor, HackStudio IDE for C++ and more)
  • Libraries for everything from cryptography to OpenGL, audio, JavaScript, GUI, playing chess, ...
  • Support for many common and uncommon file formats (PNG, JPEG, GIF, MP3, WAV, FLAC, ZIP, TAR, PDF, QOI, Gemini, ...)
  • Unified style and design philosophy, flexible theming system, custom (bitmap and vector) fonts
  • Games (Solitaire, Minesweeper, 2048, chess, Conway's Game of Life, ...) and demos (CatDog, Starfield, Eyes, mandelbrot set, WidgetGallery, ...)
  • Every-day GUI programs and utilities (Spreadsheet with JavaScript, TextEditor, Terminal, PixelPaint, various multimedia viewers and players, Mail, Assistant, Calculator, ...)

... and all of the above are right in this repository, no extra dependencies, built from-scratch by us :^)

Additionally, there are over two hundred ports of popular open-source software, including games, compilers, Unix tools, multimedia apps and more.

How do I read the documentation?

Man pages are available online at man.serenityos.org. These pages are generated from the Markdown source files in Base/usr/share/man and updated automatically.

When running SerenityOS you can use man for the terminal interface, or help for the GUI.

Code-related documentation can be found in the documentation folder.

How do I build and run this?

See the SerenityOS build instructions. Serenity runs on Linux, macOS (aarch64 might be a challenge), Windows (with WSL2) and many other *Nixes with hardware or software virtualization.

Get in touch and participate!

Join our Discord server: SerenityOS Discord

Before opening an issue, please see the issue policy.

A general guide for contributing can be found in CONTRIBUTING.md.

Authors

And many more! See here for a full contributor list. The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.