pane · Nob

##See it work

##Chromium without a window

pane starts Chromium off-screen: it opens no window at all, it only paints the page into a pixel buffer (BGRA) that your app uploads to a texture and draws wherever it wants. A version number tells you when it changed, so you only re-upload what's needed. Dropdown menus come separately, to draw on top

##Input like a browser

Mouse and keyboard go in with GLFW's codes, the same ones Minecraft and most Java games use: double and triple clicks, dragging, the wheel (shift scrolls sideways), typed text and the usual shortcuts (Ctrl+R, Alt+← and →, Ctrl zoom). The cursor turns into a hand over links

##Its own installer

Chromium isn't in the jar: the first time it's downloaded for your system (Linux, Windows or Mac, x64 or ARM), checked against its SHA-256 and unpacked with pane's own tar.gz reader, no dependencies. After that it isn't even downloaded. The files come from my own copy at chromium.nuulm.com (R2), so I don't depend on someone else's server

##The details that took work

java-cef's native side cancels every new window before telling Java, so pane injects a script that opens those links in the same page. The native side also has the right and middle buttons swapped. And the same-origin policy stays on (MCEF turns it off), because people pay on these pages

~/pane · how it works

your app (Minecraft, a Java game…)
 │ Pane.install ─► chromium.nuulm.com ─► sha256 ✓
 │ Pane.start · Pane.open("https://…")
 ▼
Chromium off-screen (java-cef)
 │ onPaint ─► BGRA pixels + version
 ▼
game texture ─► the page, drawn your way
 ▲
 └─ mouse · keyboard · wheel (GLFW codes)

A blue jukz window inside Minecraft with the Ko-fi page of Nobz loaded, a bar with back, forward, reload, the address ko-fi.com/nobmz and the Outside and close buttons — A real Ko-fi page inside Minecraft 26.2, in jukz’s browser window

The same window with the message Getting the browser ready, Only the first time. About 120 MB, and a progress bar at 75% — The first run: jukz downloads the browser and shows the progress

##Log

Oct 9, 2026MCEF firstThe prototype used MCEF and worked on Minecraft 1.21.1, but MCEF doesn't exist for 1.21.11 or 26.2, and it's LGPL
Oct 9, 2026My own librarypane, written from java-cef's API: installer, pixels, input and cursor. Tested on all three Minecraft versions jukz supports, with Ko-fi, text fields, scrolling, links and back
Oct 9, 2026My own copy of ChromiumAll six builds moved to chromium.nuulm.com. Copying them uncovered a bug: the Windows checksum comes in PowerShell's format and pane couldn't read it. Shipped as v0.1.1