Make apps for ztOS

ztOS apps are written in C, C++, Rust or Python against one small GPU toolkit, libzrnui. ztCoolStyle is the name of that UI system. It draws in Metro or DotMatrix, whichever the system is set to. Apps ship as one signed .zexec file, and the store builds them from your source.

Requires ztOS BETA-1.1 or later. Apps made with this SDK run on BETA-1.1 and newer; earlier versions of ztOS cannot run them.

git clone https://github.com/Zerone-Laboratories/zrn-sdk
cd zrn-sdk && export PATH="$PWD/tools:$PATH"
zrn doctor
zrn new "Notes" --lang c
cd notes && zrn build && zrn render out.png

Getting startedInstall, first app, first picture Ways to make an appEach language, the CLI, the older SDK Project and permissionszrnapp.toml, ids, the manifest UI elementsEach one, rendered, with its code Layout and stylesHow pages fit, Metro and DotMatrix AnimationsSwivel, turnstile, fade, tilt, running live Package and publishTest, sign, submit, update, revoke TroubleshootingReal errors and their fixes Status and gapsWhat is missing or unproven

How the code on this site was checked

Each element's snippet is compiled in every language that has it and rendered with zrn render, using the phone's own fonts from the ztOS tree. The renders are then compared pixel by pixel across languages. They match exactly, except the progress page, whose moving dots are caught at a different instant each time. The generator and report are in this site's repository. Animation numbers are read out of the C source and each one names its file.

Checked against zrn-sdk commit ea16771. Pictures are real renders of code that compiled. Source and proof.