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Nico Weber 21917e7b1e LibPDF+PDFViewer+MacPDF: Don't draw hidden text by default
Text can be rendered in various ways in PDFs: Filled, stroked,
both filled and stroked, set as clipping path, hidden, or
some combinations thereof.

We don't implement any of this at the moment except "filled".

Hidden text is used in scanned documents: The image of the scan is
drawn in the background, and then OCRd text is "drawn" as hidden
on top of the scanned bitmap. That way, the (hidden) text can be
selected and copied, and it looks like you're selecting text from
the scanned bitmap. Find-in-page also works similarly. (We currently
have neither text selection nor find-in-page, but one day we will.)

Now that we have pretty good support for CCITT and are growing some
support for JBIG2, we now draw both the scanned background image
as well as the foreground text. They're not always perfectly aligned.

This change makes it so that we don't render text that's marked as
hidden. (We still do most of the coordinate math, which will probably
come in handy at some point when we implement text selection.)

This makes these scanned documents appear as they're supposed to
appear (at least in documents where we manage to decode the background
bitmap).

This also adds a debug option to force rendering of hidden text.
2024-03-16 13:10:48 -04:00
.devcontainer Meta: Switch to clang-format-16 as the standard formatter 2023-07-08 10:32:56 +01:00
.github Meta: Add Polar to FUNDING.yml 2024-02-21 07:36:55 +01:00
AK AK: Early return from empty hash table lookups to avoid hashing 2024-03-16 14:27:59 +01:00
Base Utilities/mount: Automatically mount regular files with loop devices 2024-03-13 15:33:47 -06:00
Documentation Documentation: Update for the removal of SERENITY_SOURCE_DIR requirement 2024-02-26 13:16:27 -07:00
Kernel Kernel/Net: Add TCPSocket timer for TimeWait moving to Closed 2024-03-14 18:33:19 -06:00
Ladybird Ladybird/AppKit: Implement <input type=file> file type filtering 2024-03-16 08:42:33 +01:00
Meta LibPDF+PDFViewer+MacPDF: Don't draw hidden text by default 2024-03-16 13:10:48 -04:00
Ports Ports: Update lite-xl to 2.1.3 2024-03-14 15:42:58 +01:00
Tests LibGfx/JBIG2: Call decode_immediate_generic_region for lossless regions 2024-03-16 09:21:42 -04:00
Toolchain Kernel: Add initial basic support for KASAN 2023-12-30 13:57:10 +01:00
Userland LibPDF+PDFViewer+MacPDF: Don't draw hidden text by default 2024-03-16 13:10:48 -04:00
.clang-format Meta: Support using clang-format on Objective-C++ files 2023-08-22 21:36:19 -04:00
.clang-tidy Meta: Disable readability-function-cognitive-complexity in clang-tidy 2024-02-05 08:04:24 -07:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes
.gitignore Meta: Move .DS_Store rule to the bottom of the .gitignore file 2023-11-14 14:53:37 -05:00
.gn Meta: Automatically generate a compilation database for clangd 2023-11-14 14:29:35 -05:00
.mailmap Everywhere: Update copyrights with my new serenityos.org e-mail :^) 2023-07-15 16:21:29 +02:00
.pre-commit-config.yaml
.prettierignore LibJS: Add DisposableStack{, Prototype, Constructor} 2023-01-23 09:56:50 +00:00
.prettierrc
.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: Replace run.sh by run.py 2023-12-15 00:11:50 +01:00
CONTRIBUTING.md Meta: Add a note about resolving PR review comments 2023-10-18 13:32:13 +02:00
LICENSE Meta: Update the year range in LICENSE 2024-01-06 17:39:16 -05:00
README.md Meta: Add implicitfield to the contributors list :^) 2024-02-26 13:51:40 -07:00
SECURITY.md

SerenityOS

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

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

FAQ | Documentation | Build Instructions

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:

Screenshot

Screenshot as of c03b788.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, 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 three 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.