mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 02:37:36 +00:00
Documentation: Move all file format documentation into its own manpage
The documentation is largely unchanged except for adoption into the standard manpage format.
This commit is contained in:
parent
da25ac0d48
commit
9660f5d0e6
7 changed files with 125 additions and 83 deletions
|
@ -2,83 +2,6 @@
|
|||
|
||||
This document summarizes all non-standard file formats, data formats, and mime-types used by Serenity.
|
||||
|
||||
## Clipboard
|
||||
|
||||
The clipboard feature works through the Clipboard server, which generally acts as a global storage or three things:
|
||||
- a `String` mime type,
|
||||
- a (potentially large) block of data, shared as an anonymous file,
|
||||
- a `HashMap<String, String>` of arbitrary metadata, depending on the mime type.
|
||||
|
||||
See also [`Userland/Libraries/LibGUI/Clipboard.h`](../Userland/Libraries/LibGUI/Clipboard.h).
|
||||
|
||||
## Drag & drop
|
||||
|
||||
In contrast to the clipboard, the drag & drop feature works through WindowServer, and a bouquet of data is transmitted:
|
||||
- a `[UTF8] String` to be displayed while dragging,
|
||||
- a `HashMap<String, ByteBuffer>` map that contains arbitrary data for a variety of possible mime types,
|
||||
- a `Gfx::ShareableBitmap` to be displayed while dragging
|
||||
|
||||
Drag & drop is most prominently supported by File Manager, Spreadsheet, and Terminal.
|
||||
Various applications accept drag & drop to open files.
|
||||
|
||||
## glyph/x-fonteditor (Clipboard-only)
|
||||
|
||||
Requires the metadata-fields `count` (count of glyphs copied) and `first_glyph` (lowest codepoint that is copied), encoded as decimal strings.
|
||||
|
||||
The data contains codepoint (encoded as host-endian u32), width and height (as u8's) and glyph bitmap data. It is encoded in width times height many bytes, either 0 (clear) or 1 (set).
|
||||
|
||||
Implemented in `FontEditor::copy_selected_glyphs` and `FontEditor::paste_glyphs`, in [`Userland/Applications/FontEditor/MainWidget.cpp`](../Userland/Applications/FontEditor/MainWidget.cpp).
|
||||
|
||||
## image/x-serenityos (Clipboard-only)
|
||||
|
||||
Requires the metadata-fields `width`, `height`, `scale`, `format` (see `Gfx::BitmapFormat`), and `pitch`, encoded as decimal strings.
|
||||
|
||||
The data is encoded according to `Gfx::determine_storage_format(BitmapFormat)`, so either as
|
||||
BGRx8888, BGRA8888, RGBA8888, or 8-bit palette index. Note that the palette is not transferred.
|
||||
|
||||
Implemented in [`Clipboard::set_bitmap` and `Clipboard::DataAndType::as_bitmap()`](../Userland/Libraries/LibGUI/Clipboard.cpp).
|
||||
|
||||
## text/uri-list (Clipboard and drag&drop)
|
||||
|
||||
Newline-delimited set of URIs. Used by File Manager, FileSystemModel, and Terminal.
|
||||
|
||||
Example:
|
||||
|
||||
```
|
||||
file:///home/anon/Desktop/Browser
|
||||
file:///home/anon/Desktop/Help
|
||||
file:///home/anon/Desktop/Home
|
||||
```
|
||||
|
||||
## Application File (`*.af` files)
|
||||
|
||||
These files are human-readable and are a subset of the INI-format, have no easily detectable filemagic.
|
||||
These files define System Menu entries and launcher file types / protocols.
|
||||
|
||||
They are stored in [`/res/apps`](../Base/res/apps).
|
||||
|
||||
See also [`Userland/Services/Taskbar/main.cpp`](../Userland/Services/Taskbar/main.cpp) and `Launcher::load_handlers` in [`Userland/Services/LaunchServer/Launcher.cpp`](../Userland/Services/LaunchServer/Launcher.cpp).
|
||||
|
||||
## Font (`*.font` files)
|
||||
|
||||
These files contain bitmap definitions of fonts, either varying-width or fixed-width.
|
||||
The header definition can be found in `Gfx::FontFileHeader` in [`Userland/Libraries/LibGfx/Font/BitmapFont.cpp`](../Userland/Libraries/LibGfx/Font/BitmapFont.cpp).
|
||||
Most prominently, the first four bytes contain the filemagic: `!Fnt`.
|
||||
|
||||
## GUI Markup Language (`*.gml` files)
|
||||
|
||||
These files are human-readable, have no easily detectable filemagic, and define GUI designs and layouts.
|
||||
The format is strongly influenced by QML, the Qt Modeling Language.
|
||||
|
||||
See the [GML manpage(s)](../Base/usr/share/man/man5/GML.md), [GML Playground(1)](../Userland/DevTools/GMLPlayground/), and the [GML support in LibGUI](../Userland/Libraries/LibGUI/GML/).
|
||||
|
||||
## Inter Process Communication (`*.ipc` files)
|
||||
|
||||
These files are human-readable, have no easily detectable filemagic, and define IPC interfaces.
|
||||
The format is loosely inspired by C++ headers.
|
||||
|
||||
See also [`Meta/Lagom/Tools/CodeGenerators/IPCCompiler/`](../Meta/Lagom/Tools/CodeGenerators/IPCCompiler/).
|
||||
|
||||
## Inter Process Communication (through Unix sockets)
|
||||
|
||||
The various services each have their own formats, all very similar, and automatically implemented through LibIPC. The specifics depend on the corresponding source `.ipc` file.
|
||||
|
@ -91,9 +14,3 @@ In general, communication works by packets, which might have been sent in respon
|
|||
- the 32-bit endpoint magic (note that responses use the endpoint of the requesting packet, so the Clipboard server might use the endpoint magic 4008793515 to signal that this packet is a response)
|
||||
- the 32-bit message ID within that endpoint (sequentially assigned, starting at 1)
|
||||
- the data of that message itself (e.g. see `Messages::ClipboardServer::SetClipboardData::{en,de}code` in `Build/*/Userland/Services/Clipboard/ClipboardServerEndpoint.h`).
|
||||
|
||||
## Postcreate (`*.postcreate` files)
|
||||
|
||||
Shell-script executed by HackStudio after creating a new project.
|
||||
|
||||
See also `ProjectTemplate::create_project` in [`Userland/DevTools/HackStudio/ProjectTemplate.cpp`](../Userland/DevTools/HackStudio/ProjectTemplate.cpp).
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue