58f3c891ee
Add observable AppConfig (grid/snap/arc-on-crossing/animation/theme), pure-geometry orthogonal router with grid-snapped bends and perpendicular crossing detection for arc hops, and a mock flow-distribution solver that pushes supply to demand along shortest paths and records signed per-edge flow and direction. Covered by routing and flow-solver tests. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
"""Application configuration (grid, snapping, routing, animation, theming)."""
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from __future__ import annotations
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from PyQt6.QtCore import QObject, pyqtSignal
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class AppConfig(QObject):
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"""Live, observable editor configuration.
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Emitting :attr:`changed` lets the canvas and items refresh when the user
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tweaks a setting in the configuration dialog.
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"""
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changed = pyqtSignal()
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def __init__(self, parent: QObject | None = None) -> None:
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super().__init__(parent)
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self.grid_size = 20
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self.show_grid = True
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self.snap_to_grid = True
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# Draw a small arc "hop" where an edge crosses another edge.
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self.arc_on_crossing = True
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self.arc_radius = 5.0
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# Routing stub length from a port before turning.
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self.route_stub = 20
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# Flow animation.
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self.animation_speed = 1.0 # multiplier
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self.color_scheme = "default"
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# Canvas theme.
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self.background = "#fafafa"
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self.grid_color = "#e0e0e0"
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def snap(self, value: float) -> float:
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if not self.snap_to_grid or self.grid_size <= 0:
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return value
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g = self.grid_size
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return round(value / g) * g
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def snap_point(self, x: float, y: float) -> tuple[float, float]:
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return self.snap(x), self.snap(y)
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def emit_changed(self) -> None:
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self.changed.emit()
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def to_dict(self) -> dict:
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return {
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"grid_size": self.grid_size,
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"show_grid": self.show_grid,
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"snap_to_grid": self.snap_to_grid,
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"arc_on_crossing": self.arc_on_crossing,
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"arc_radius": self.arc_radius,
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"route_stub": self.route_stub,
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"animation_speed": self.animation_speed,
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"color_scheme": self.color_scheme,
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"background": self.background,
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"grid_color": self.grid_color,
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}
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def update_from(self, data: dict) -> None:
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for k, v in data.items():
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if hasattr(self, k):
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setattr(self, k, v)
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self.changed.emit()
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