Decoding a batch of photographs took seconds on the main thread, so the
window froze with no sign of what was happening. loadImages now takes an
optional LoadProgress (per-file callback plus a cancel flag) and hands files
out from a shared cursor, so one large file cannot stall the queue behind it.
The GUI decodes off the main thread and shows a progress window with the
count, the current file and a Cancel button; it only appears if the batch is
still running after 250 ms. Headless mode keeps a "reading n/total" line on
stderr when it is attached to a terminal.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Port of the Python prototype to C++20 with a CMake build:
- effector_core: GUI-free static library (effects, image IO via gdk-pixbuf,
declarative param specs, registry, portable seeded RNG, thread helper)
- scanlines effect: plans strips from the seeded RNG, then copies pixels in
parallel with memcpy and doubling horizontal tiling
- gtkmm 4 interface: native file dialogs, widgets generated from the param
specs, coalesced background renders, preview as a GDK memory texture
- CLI: flags generated from the effect registry, headless rendering with no
display required
- ctest suite covering the RNG, registry, effect geometry and image round trip
The Python prototype is kept under python-reference/.
