def bind_widget(self,
model: PresentationModel,
path: str,
connect_to_model=True) -> None:
"""
connect_to_model=False means:
- self: ColorText is created and owned by BoundColorWidget wrapper.
- Wrapper forwards model changes to self (which updates other widgets).
(model.update_widget[path] != self)
- self.gui_changed invokes self.set_model() (which updates model
AND other widgets).
- wrapper.gui_changed signal is NEVER emitted.
"""
try:
self.default_palette = self.palette()
self.error_palette = self.calc_error_palette()
self.pmodel = model
self.path = path
self.cfg2gui()
if connect_to_model:
# Allow widget to be updated by other events.
model.update_widget[path] = self.cfg2gui
# Allow pmodel to be changed by widget.
self.gui_changed.connect(self.set_model)
except Exception:
perr(self)
perr(path)
raise
def verify_res_divisor_rounding(
target_int: int,
res_divisor: float,
speed_hack: bool,
):
"""Ensure that pathological-case float rounding errors
don't cause inconsistent dimensions and assertion errors."""
target_dim = target_int + 0.5
undivided_dim = round(target_dim * res_divisor)
cfg = RendererConfig(undivided_dim, undivided_dim, res_divisor=res_divisor)
cfg.before_preview()
with ExitStack() as stack:
if speed_hack:
stack.enter_context(
patch.object(AbstractMatplotlibRenderer, "_save_background")
)
datas = []
else:
datas = [RENDER_Y_ZEROS]
try:
renderer = Renderer(cfg, LayoutConfig(), datas, None, None)
if not speed_hack:
renderer.update_main_lines(datas)
renderer.get_frame()
except Exception:
perr(cfg.divided_width)
raise