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fb7212c62bCo-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DVrVthWN8GsmgHGUhhsCYm
54 lines
2.1 KiB
Markdown
54 lines
2.1 KiB
Markdown
# YAPF for GIMP
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Open and export `.yapf` images in **GIMP 3.0 or later**.
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- **File → Open** reads `.yapf` (Gray, Gray + Alpha, RGB, RGBA).
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- **File → Export As… → `name.yapf`** writes the visible image (layers are
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flattened into a copy; your document is untouched), with an optional
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**Store mipmaps** checkbox for game engines.
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## Install
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You need GIMP 3 with its development files (`gimptool`).
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| System | Development files |
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| :-------------- | :-------------------------------------------------- |
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| Arch / Manjaro | `sudo pacman -S gimp` (includes them) |
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| Debian / Ubuntu | `sudo apt install libgimp-3.0-dev` (GIMP 3 packages) |
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| Fedora | `sudo dnf install gimp-devel` |
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| NixOS | `nix-shell gimp-shell.nix` (in this folder), then build inside that shell |
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| Windows | MSYS2: `pacman -S mingw-w64-ucrt-x86_64-gimp` |
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| macOS | build GIMP 3 from source or use MacPorts/Homebrew |
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Then, from this folder:
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```sh
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gimptool --install yapf-gimp.c
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```
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That compiles the plugin (it pulls in `../../yapf.c` itself) and installs it
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into your personal GIMP plug-ins folder. Restart GIMP.
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On NixOS, build with the same nixpkgs channel your GIMP comes from (the
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plugin links against that GIMP's libraries), and build it again after a
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GIMP update. Your GIMP must be GIMP 3: `environment.systemPackages = [
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pkgs.gimp3 ];`, or `nix-shell -p gimp3 --run gimp` to try it.
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### Manual build
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```sh
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gcc -O2 $(pkg-config --cflags gimpui-3.0) yapf-gimp.c $(pkg-config --libs gimpui-3.0) -o yapf-gimp
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```
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Copy `yapf-gimp` to `<GIMP config>/plug-ins/yapf-gimp/yapf-gimp`, where the
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GIMP config folder is `~/.config/GIMP/3.0` on Linux,
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`%APPDATA%\GIMP\3.0` on Windows and
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`~/Library/Application Support/GIMP/3.0` on macOS.
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## Notes
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- Pixels are saved with the sRGB flag, because GIMP's 8-bit buffers are
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gamma encoded. Files marked linear load as linear.
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- When a file has mipmaps, GIMP opens the full-size image.
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- Tested with GIMP 3.0.8 on Linux: opening matches the reference decoder
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pixel for pixel, and export equals GIMP's own flattened PNG of the image.
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