closes#251
Two related bugs where Python garbage collection destroyed callbacks
that were still needed by live C++ objects:
1. **Drawable callbacks (all 8 types)**: tp_dealloc unconditionally called
click_unregister() etc., destroying callbacks even when the C++ object
was still alive in a parent's children vector. Fixed by guarding with
shared_ptr::use_count() <= 1 — only unregister when the Python wrapper
is the last owner.
2. **Timer GC prevention**: Active timers now hold a Py_INCREF'd reference
to their Python wrapper (Timer::py_wrapper), preventing GC while the
timer is registered in the engine. Released on stop(), one-shot fire,
or destruction. mcrfpy.Timer("name", cb, 100) now works without storing
the return value.
Also includes audio synth demo UI fixes: button click handling (don't set
on_click on Caption children), single-column slider layout, improved
Animalese contrast.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
All 27 PyTypeObject declarations in namespace mcrfpydef headers changed
from `static` to `inline` (C++17), ensuring a single global instance
across translation units. This fixes the root cause of stale-type-pointer
segfaults where only the McRFPy_API.cpp copy was PyType_Ready'd.
Replaced ~20 PyTypeCache call sites and 2 PyRAII::PyTypeRef lookups with
direct &mcrfpydef::Type references. Deleted PyTypeCache.h/.cpp,
PyObjectUtils.h, and PyRAII.h (all were workarounds for the static bug).
228/228 tests pass.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
BREAKING CHANGE: Constructor keyword argument renamed from `click` to
`on_click` for all UIDrawable types (Frame, Caption, Sprite, Grid, Line,
Circle, Arc).
Before: Frame(pos=(0,0), size=(100,100), click=handler)
After: Frame(pos=(0,0), size=(100,100), on_click=handler)
The property name was already `on_click` - this makes the constructor
kwarg match, completing the callback naming standardization from #139.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implement new UIDrawable-derived classes for vector graphics:
- UILine: Thick line segments using sf::ConvexShape for proper thickness
- Properties: start, end, color, thickness
- Supports click detection along the line
- UICircle: Filled and outlined circles using sf::CircleShape
- Properties: radius, center, fill_color, outline_color, outline
- Full property system for animations
- UIArc: Arc segments for orbital paths and partial circles
- Properties: center, radius, start_angle, end_angle, color, thickness
- Uses sf::VertexArray with TriangleStrip for smooth rendering
- Supports arbitrary angle spans including negative (reverse) arcs
All primitives integrate with the Python API through mcrfpy module:
- Added to PyObjectsEnum for type identification
- Full getter/setter support for all properties
- Added to UICollection for scene management
- Support for visibility, opacity, z_index, name, and click handling
closes#128, closes#129🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
