547 lines
25 KiB
Python
547 lines
25 KiB
Python
"""Orbit menu — the base element.
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A single "orbit" is one central node surrounded by a ring of child nodes, laid out
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on a circle like moons around a planet. Clicking a child that has its own children
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re-centers the view on that child and draws a fresh ring for *its* children — the
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same base element recursively applied, so orbits nest arbitrarily deep. Clicking the
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center (or Backspace) steps back out one level; Escape closes the menu.
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Each level is rendered once into its own Gtk.Fixed page and cached in a Gtk.Stack
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keyed by the path of indices taken to reach it (e.g. (2, 0)); navigating in either
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direction just swaps the stack's visible child, and the Stack's own CROSSFADE
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transition gives the nested navigation a smooth fade instead of a hard cut. A
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category with a dynamic child list (open windows, user scripts) passes
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`dynamic=True` so its page is rebuilt — never cached — on every visit.
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Ported from the ~/code.dev/test-astralmenu prototype onto raw Gtk4LayerShell (no
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Astal.Window dependency) to match astal-menu/window.py's layer-shell approach.
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"""
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from __future__ import annotations
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import math
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import random
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from dataclasses import dataclass, field
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from typing import Callable, Optional
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import cairo
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import gi
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gi.require_version("Gtk", "4.0")
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gi.require_version("Gdk", "4.0")
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gi.require_version("Gtk4LayerShell", "1.0")
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from gi.repository import Gdk, Gtk # noqa: E402
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from gi.repository import Gtk4LayerShell as LayerShell # noqa: E402
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# CyberQueer accent/violet, matching style/_colors.css — hardcoded here (as
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# lib/border.py does for its own Cairo drawing) since Cairo paints directly and
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# doesn't see GTK CSS @define-color names.
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_ACCENT = (0xE4 / 255, 0x00 / 255, 0x46 / 255)
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_VIOLET = (0x50 / 255, 0x18 / 255, 0xDD / 255)
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@dataclass
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class _Satellite:
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glyph: str
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height: float # fixed radial distance from its node — never changes at runtime
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wobble_amp: float # extra angle (radians) layered on top of the mouse-facing direction
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wobble_speed: float
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phase: float
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color: tuple[float, float, float]
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@dataclass
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class _Assignment:
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"""One satellite bound to one node — decided once per page build (see
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OrbitMenu._pick_assignments), not re-rolled every frame. A node may end up with
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two assignments; since each _Satellite has its own fixed `height`, the two
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already ride different-radius orbits, and _pick_assignments additionally
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widens the gap between them (see effective_height) so they never crowd."""
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sat: _Satellite
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node: tuple[float, float]
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bracket: Optional[tuple[str, str]] = None # flanking glyphs, tangent to the orbit
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line_style: str = "solid" # "solid" | "dashed" | "dotted"
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axis: Optional[str] = None # None -> faces the cursor; "x"/"y" -> see below
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effective_height: float = 0.0 # sat.height, widened if this node is doubled up
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mouse_offset: float = 0.0 # per-assignment phase added to the axis angle
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mult_x: float = 1.0 # independent per-assignment response strength
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mult_y: float = 1.0 # to horizontal vs vertical mouse movement
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@dataclass
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class MenuItem:
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label: str
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children: list["MenuItem"] | Callable[[], list["MenuItem"]] = field(default_factory=list)
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action: Optional[Callable[[], None]] = None
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danger: bool = False # red/danger tint (power actions)
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dynamic: bool = False # rebuild this node's page every visit, never cache
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icon: str = "" # optional leading nerd-font glyph, shown above label
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def resolved_children(self) -> list["MenuItem"]:
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return self.children() if callable(self.children) else self.children
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class OrbitMenu(Gtk.Window):
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"""A layer-shell window that renders a MenuItem tree as nested, cached orbits."""
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CENTER_SIZE = 108
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NODE_SIZE = 66 # prototype was 84; shrunk >=1/5 (66/84 ≈ 0.79) per node
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RADIUS = 168
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CANVAS_SIZE = 480
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# Cosmetic satellites: glyphs that each orbit ONE ring node at a fixed radial
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# "height" from it (set once here, never changed at runtime) — only their angle
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# around that node moves, easing to face the cursor plus a small idle wobble so
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# they're alive even when the mouse is still. Which nodes get one, how many, and
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# which glyph goes where is re-rolled once per page build (_pick_assignments) —
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# varied each time you land on a category, stable while that page is showing.
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_GLYPH_FONT = "Agave Nerd Font Mono"
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_SATELLITES = [
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_Satellite(glyph="\uef5f", height=42, wobble_amp=0.30, wobble_speed=0.6, phase=0.0, color=_ACCENT),
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_Satellite(glyph="\U000f0471", height=50, wobble_amp=0.22, wobble_speed=0.45, phase=1.4, color=_VIOLET),
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_Satellite(glyph="\uf197", height=46, wobble_amp=0.35, wobble_speed=0.7, phase=2.6, color=_VIOLET),
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_Satellite(glyph="\U000f1383", height=54, wobble_amp=0.25, wobble_speed=0.5, phase=4.0, color=_ACCENT),
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]
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# Flanking glyphs drawn tangent to the orbit around some (not all) satellites —
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# e.g. "-< <glyph> >-". Rotated to the local tangent direction in _draw_glyph.
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_BRACKETS = [("-<", ">-"), ("-[", "]-"), ("-(", ")-"), ("-{", "}-"), ("-|", "|-")]
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_BRACKET_CHANCE = 0.45
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def __init__(self, root: MenuItem, on_close: Optional[Callable[[], None]] = None,
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satellites: bool = True):
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super().__init__()
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self.add_css_class("orbit-menu-window")
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self._on_close = on_close
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self._satellites_enabled = satellites
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self._root = root
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self._stack_path: list[int] = [] # indices taken from root
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self._pages: dict[tuple, Gtk.Fixed] = {} # cached pages, keyed by path
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self._page_rings: dict[str, Gtk.DrawingArea] = {}
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self._current_ring: Gtk.DrawingArea | None = None
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# satellite/mouse-parallax state (unused entirely if satellites=False)
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cx = cy = self.CANVAS_SIZE / 2
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self._mouse_target = (cx, cy)
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self._mouse_smooth = (cx, cy)
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self._sat_time = 0.0
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self._last_tick: float | None = None
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self._tick_id: int | None = None
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self._init_layer_shell()
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self._gtkstack = Gtk.Stack(
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transition_type=Gtk.StackTransitionType.CROSSFADE,
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transition_duration=220,
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)
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self._gtkstack.set_size_request(self.CANVAS_SIZE, self.CANVAS_SIZE)
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self.set_child(self._gtkstack)
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keys = Gtk.EventControllerKey()
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keys.connect("key-pressed", self._on_key)
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self.add_controller(keys)
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if self._satellites_enabled:
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motion = Gtk.EventControllerMotion()
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motion.connect("motion", self._on_motion)
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motion.connect("leave", self._on_motion_leave)
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self.add_controller(motion)
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self._show_path(())
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# -- layer shell ----------------------------------------------------
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def _init_layer_shell(self) -> None:
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LayerShell.init_for_window(self)
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LayerShell.set_layer(self, LayerShell.Layer.OVERLAY)
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LayerShell.set_namespace(self, "orbit-menu")
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LayerShell.set_keyboard_mode(self, LayerShell.KeyboardMode.EXCLUSIVE)
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# No anchors set => gtk-layer-shell centers the surface on its output.
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# -- item lookup / path helpers --------------------------------------
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def _item_at(self, path: tuple) -> MenuItem:
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item = self._root
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for i in path:
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item = item.resolved_children()[i]
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return item
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def _cache_key(self, path: tuple) -> tuple | None:
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"""None => never cache (path passes through a dynamic node)."""
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item = self._root
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for i in path:
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if item.dynamic:
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return None
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item = item.resolved_children()[i]
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return None if item.dynamic else path
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# -- page construction ------------------------------------------------
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def _build_page(self, path: tuple) -> tuple[Gtk.Fixed, Gtk.DrawingArea]:
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current = self._item_at(path)
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fixed = Gtk.Fixed()
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fixed.set_size_request(self.CANVAS_SIZE, self.CANVAS_SIZE)
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cx = cy = self.CANVAS_SIZE / 2
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ring = Gtk.DrawingArea()
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ring.set_size_request(self.CANVAS_SIZE, self.CANVAS_SIZE)
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children = current.resolved_children()
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fixed.put(ring, 0, 0)
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center_btn = Gtk.Button()
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center_btn.set_has_frame(False)
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center_btn.add_css_class("orbit-center")
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if len(path) == 0:
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center_btn.add_css_class("orbit-root")
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center_btn.set_child(self._node_label(current.icon, current.label))
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center_btn.set_size_request(self.CENTER_SIZE, self.CENTER_SIZE)
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center_btn.connect("clicked", lambda *_a: self._go_back())
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fixed.put(center_btn, cx - self.CENTER_SIZE / 2, cy - self.CENTER_SIZE / 2)
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count = len(children)
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node_positions: list[tuple[float, float]] = []
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for i, item in enumerate(children):
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angle = -math.pi / 2 + i * (2 * math.pi / max(count, 1))
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nx = cx + self.RADIUS * math.cos(angle)
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ny = cy + self.RADIUS * math.sin(angle)
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node_positions.append((nx, ny))
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node_btn = Gtk.Button()
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node_btn.set_has_frame(False)
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node_btn.add_css_class("orbit-node")
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if item.danger:
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node_btn.add_css_class("orbit-danger")
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node_btn.set_child(self._node_label(item.icon, item.label))
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node_btn.set_size_request(self.NODE_SIZE, self.NODE_SIZE)
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node_btn.set_tooltip_text(item.label)
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node_btn.connect("clicked", lambda *_a, idx=i: self._on_node_clicked(idx))
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fixed.put(node_btn, nx - self.NODE_SIZE / 2, ny - self.NODE_SIZE / 2)
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assignments = self._pick_assignments(node_positions, center=(cx, cy)) \
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if self._satellites_enabled else []
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ring.set_draw_func(self._make_page_draw(has_ring=bool(children), assignments=assignments))
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return fixed, ring
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_MAX_PER_NODE = 2
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_MIN_SPREAD_NODES = 3 # every satellite spawned is spread across >= this
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# many distinct nodes, node count permitting
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_DOUBLED_MIN_GAP = 22 # minimum radius gap between 2 satellites sharing a node
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_CENTER_HEIGHT_BUMP = 30 # extra clearance so satellites orbit outside the
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# (much bigger) center button, not underneath it
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_LINE_STYLES = ["solid", "dashed", "dotted"]
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_COUNT_BASE = 2
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_COUNT_RANDOM_MOD = 3 # random upper bound = (_COUNT_RANDOM_MOD % node-amount) + _COUNT_RANDOM_ADD
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_COUNT_RANDOM_ADD = 2
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def _pick_assignments(self, node_positions: list[tuple[float, float]],
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center: Optional[tuple[float, float]] = None) -> list[_Assignment]:
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"""Randomize which nodes get a satellite, which glyph goes where, and which
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(if any) get a tangential bracket — decided once per page build. Total count
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is always _COUNT_BASE + random(1, (_COUNT_RANDOM_MOD % node-amount) +
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_COUNT_RANDOM_ADD) — scales down on pages with few nodes — clamped to
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however many actually fit given _MAX_PER_NODE; since there are only
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len(_SATELLITES) distinct glyphs, counts above that cycle through them again
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rather than repeating the same one back-to-back. Placement first seeds
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_MIN_SPREAD_NODES distinct nodes one each, then drops the rest onto random
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nodes with room — so on any page with enough nodes, they land on at least 3
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of them, never crammed onto 1-2. `center` (the center/back button's
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position) is just one more candidate node — it can get satellites too, with
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extra height so they clear it."""
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all_positions = list(node_positions)
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if center is not None:
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all_positions.append(center)
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n_nodes = len(all_positions)
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if n_nodes == 0:
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return []
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random_max = (self._COUNT_RANDOM_MOD % n_nodes) + self._COUNT_RANDOM_ADD
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count = self._COUNT_BASE + random.randint(1, random_max)
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count = min(count, n_nodes * self._MAX_PER_NODE)
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sats: list[_Satellite] = []
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while len(sats) < count:
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cycle = list(self._SATELLITES)
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random.shuffle(cycle)
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sats.extend(cycle)
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sats = sats[:count]
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random.shuffle(sats)
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node_order = list(range(n_nodes))
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random.shuffle(node_order)
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seed_count = min(self._MIN_SPREAD_NODES, n_nodes)
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per_node = [0] * n_nodes
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placements: list[tuple[_Satellite, int]] = []
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for idx in node_order[:seed_count]:
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if not sats:
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break
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per_node[idx] += 1
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placements.append((sats.pop(), idx))
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for sat in sats:
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candidates = [i for i, c in enumerate(per_node) if c < self._MAX_PER_NODE]
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if not candidates:
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break # every node already at cap (only possible when n_nodes is tiny)
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idx = random.choice(candidates)
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per_node[idx] += 1
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placements.append((sat, idx))
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assignments = [
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_Assignment(
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sat=sat, node=all_positions[idx],
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effective_height=sat.height + (self._CENTER_HEIGHT_BUMP if all_positions[idx] == center else 0),
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bracket=random.choice(self._BRACKETS) if random.random() < self._BRACKET_CHANCE else None,
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line_style=random.choice(self._LINE_STYLES),
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# Independent per-satellite response strength to horizontal vs.
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# vertical mouse movement — drawn separately, so a given satellite
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# often ends up noticeably more reactive in one direction than
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# the other instead of moving toward the cursor symmetrically.
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mult_x=random.uniform(0.5, 1.8),
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mult_y=random.uniform(0.5, 1.8),
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)
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for sat, idx in placements
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]
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# A node with 2 satellites: split their motion instead of both facing the
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# cursor identically (one tracks the mouse's X only, the other its Y — see
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# _draw_satellites), widen the gap between their orbit radii so the higher
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# one reads as clearly further out, and give each its own random phase
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# offset — so when a page has several doubled nodes, they drift out of
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# sync with each other instead of all sweeping in lockstep.
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by_node: dict[tuple[float, float], list[_Assignment]] = {}
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for a in assignments:
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by_node.setdefault(a.node, []).append(a)
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for group in by_node.values():
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if len(group) == self._MAX_PER_NODE:
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random.shuffle(group)
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group[0].axis = "x"
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group[1].axis = "y"
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for g in group:
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g.mouse_offset = random.uniform(0.0, 2 * math.pi)
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lo, hi = sorted(group, key=lambda a: a.effective_height)
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if hi.effective_height - lo.effective_height < self._DOUBLED_MIN_GAP:
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hi.effective_height = lo.effective_height + self._DOUBLED_MIN_GAP
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return assignments
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@staticmethod
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def _node_label(icon: str, label: str) -> Gtk.Widget:
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box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=2,
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halign=Gtk.Align.CENTER, valign=Gtk.Align.CENTER)
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if icon:
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ic = Gtk.Label(label=icon)
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ic.add_css_class("orbit-node-icon")
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box.append(ic)
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lb = Gtk.Label(label=label, wrap=True, justify=Gtk.Justification.CENTER,
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max_width_chars=10, lines=2, ellipsize=3)
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lb.add_css_class("orbit-node-text")
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box.append(lb)
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return box
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def _make_page_draw(self, has_ring: bool, assignments: list[_Assignment]):
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def draw(_area, cr, width, height):
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if has_ring:
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cx, cy = width / 2, height / 2
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cr.set_source_rgba(1, 1, 1, 0.12)
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cr.set_line_width(1.5)
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cr.arc(cx, cy, self.RADIUS, 0, 2 * math.pi)
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cr.stroke()
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if self._satellites_enabled:
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self._draw_satellites(cr, assignments)
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return draw
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def _draw_satellites(self, cr, assignments: list[_Assignment]) -> None:
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"""Each assigned glyph orbits its node at a FIXED radial height (set once in
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_SATELLITES, never changed here) — only the angle around the node moves: it
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eases to face the cursor (see _on_tick's mouse smoothing) plus a small idle
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wobble so it's alive even when the mouse sits still. Purely cosmetic, never
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hit-testable. Orbit lines are drawn first, in their own pass, so no glyph's
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glow ends up half-covered by a line belonging to a different satellite."""
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for a in assignments:
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nx, ny = a.node
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self._draw_orbit_line(cr, nx, ny, a.effective_height, a.sat.color, a.line_style)
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mx, my = self._mouse_smooth
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for a in assignments:
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nx, ny = a.node
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if a.axis == "x":
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# tracks only the cursor's X position — a full sweep left-to-right
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# across the canvas takes it all the way around its node. Each
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# doubled node's own random offset (see _pick_assignments) keeps
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# multiple doubled nodes from all sweeping in lockstep.
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face_angle = (mx / self.CANVAS_SIZE) * 2 * math.pi * a.mult_x + a.mouse_offset
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elif a.axis == "y":
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face_angle = (my / self.CANVAS_SIZE) * 2 * math.pi * a.mult_y + a.mouse_offset
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else:
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# mult_x/mult_y independently scale each axis before the direction
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# is computed, so this satellite can be visibly more reactive to
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# horizontal cursor movement than vertical, or vice versa.
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dx, dy = (mx - nx) * a.mult_x, (my - ny) * a.mult_y
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face_angle = math.atan2(dy, dx) if (dx or dy) else 0.0
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angle = face_angle + a.sat.wobble_amp * math.sin(self._sat_time * a.sat.wobble_speed + a.sat.phase)
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px = nx + a.effective_height * math.cos(angle)
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py = ny + a.effective_height * math.sin(angle)
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self._draw_glyph(cr, px, py, a.sat.glyph, a.sat.color, orbit_angle=angle, bracket=a.bracket)
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def _draw_orbit_line(self, cr, nx: float, ny: float, radius: float,
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color: tuple[float, float, float], style: str) -> None:
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"""A circle tracing the path a satellite's angle sweeps around its node —
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solid/dashed/dotted per-assignment (see _pick_assignments), fixed for as
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long as that page's assignments are, so it never flickers style. Kept
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visibly faint against the dark theme, but not so faint it disappears."""
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r, g, b = color
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cr.save()
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if style == "dashed":
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cr.set_dash([7.0, 5.0])
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elif style == "dotted":
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cr.set_dash([2.0, 3.5])
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cr.set_source_rgba(r, g, b, 0.38)
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cr.set_line_width(1.4)
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cr.arc(nx, ny, radius, 0, 2 * math.pi)
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cr.stroke()
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cr.restore()
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def _draw_glyph(self, cr, x: float, y: float, glyph: str, color: tuple[float, float, float],
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orbit_angle: float = 0.0, bracket: Optional[tuple[str, str]] = None) -> None:
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r, g, b = color
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glow = cairo.RadialGradient(x, y, 0, x, y, 16)
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glow.add_color_stop_rgba(0.0, r, g, b, 0.45)
|
|
glow.add_color_stop_rgba(1.0, r, g, b, 0.0)
|
|
cr.set_source(glow)
|
|
cr.arc(x, y, 16, 0, 2 * math.pi)
|
|
cr.fill()
|
|
|
|
cr.select_font_face(self._GLYPH_FONT, cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL)
|
|
cr.set_font_size(15)
|
|
ext = cr.text_extents(glyph)
|
|
cr.move_to(x - ext.width / 2 - ext.x_bearing, y - ext.height / 2 - ext.y_bearing)
|
|
cr.set_source_rgba(r, g, b, 0.95)
|
|
cr.show_text(glyph)
|
|
|
|
if bracket is not None:
|
|
self._draw_bracket(cr, x, y, orbit_angle, bracket, color)
|
|
|
|
def _draw_bracket(self, cr, x: float, y: float, orbit_angle: float,
|
|
bracket: tuple[str, str], color: tuple[float, float, float]) -> None:
|
|
"""Flank the glyph at (x, y) with two small strings along the orbit's
|
|
TANGENT at this point (perpendicular to the radial orbit_angle), e.g.
|
|
"-< ->-" either side — like brackets riding along the direction of travel
|
|
rather than pointing at the node."""
|
|
r, g, b = color
|
|
tangent = orbit_angle + math.pi / 2
|
|
# keep the text roughly upright instead of upside-down on the far side
|
|
if math.cos(tangent) < 0:
|
|
tangent += math.pi
|
|
|
|
cr.select_font_face(self._GLYPH_FONT, cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL)
|
|
cr.set_font_size(11)
|
|
offset = 15.0
|
|
for text, sign in ((bracket[0], -1), (bracket[1], 1)):
|
|
ext = cr.text_extents(text)
|
|
bx = x + sign * offset * math.cos(tangent)
|
|
by = y + sign * offset * math.sin(tangent)
|
|
cr.save()
|
|
cr.translate(bx, by)
|
|
cr.rotate(tangent)
|
|
cr.move_to(-ext.width / 2 - ext.x_bearing, -ext.height / 2 - ext.y_bearing)
|
|
cr.set_source_rgba(r, g, b, 0.7)
|
|
cr.show_text(text)
|
|
cr.restore()
|
|
|
|
# -- mouse parallax / animation loop -------------------------------------
|
|
def _on_motion(self, _ctrl, x: float, y: float) -> None:
|
|
self._mouse_target = (x, y)
|
|
|
|
def _on_motion_leave(self, _ctrl) -> None:
|
|
self._mouse_target = (self.CANVAS_SIZE / 2, self.CANVAS_SIZE / 2)
|
|
|
|
def _on_tick(self, _widget, frame_clock) -> bool:
|
|
now = frame_clock.get_frame_time() / 1_000_000 # -> seconds
|
|
dt = 0.0 if self._last_tick is None else max(0.0, now - self._last_tick)
|
|
self._last_tick = now
|
|
|
|
self._sat_time += dt
|
|
|
|
mx, my = self._mouse_target
|
|
sx, sy = self._mouse_smooth
|
|
ease = 1 - math.exp(-dt * 6.0) # frame-rate independent lerp toward the cursor
|
|
self._mouse_smooth = (sx + (mx - sx) * ease, sy + (my - sy) * ease)
|
|
|
|
if self._current_ring is not None:
|
|
self._current_ring.queue_draw()
|
|
return True # keep ticking every frame while the window is mapped
|
|
|
|
# -- navigation ---------------------------------------------------------
|
|
def _show_path(self, path: tuple) -> None:
|
|
key = self._cache_key(path)
|
|
name = "/".join(str(i) for i in path) or "root"
|
|
# a dynamic path (or one passing through a dynamic ancestor) is rebuilt fresh
|
|
# and swapped in under a throwaway name so the stack still crossfades to it.
|
|
if key is None:
|
|
page, ring = self._build_page(path)
|
|
name = f"{name}#live"
|
|
old = self._gtkstack.get_child_by_name(name)
|
|
if old is not None:
|
|
self._gtkstack.remove(old)
|
|
self._gtkstack.add_named(page, name)
|
|
self._page_rings[name] = ring
|
|
elif key not in self._pages:
|
|
page, ring = self._build_page(path)
|
|
self._pages[key] = page
|
|
self._gtkstack.add_named(page, name)
|
|
self._page_rings[name] = ring
|
|
self._gtkstack.set_visible_child_name(name)
|
|
self._stack_path = list(path)
|
|
self._current_ring = self._page_rings.get(name)
|
|
|
|
def _on_node_clicked(self, idx: int) -> None:
|
|
path = tuple(self._stack_path)
|
|
item = self._item_at(path).resolved_children()[idx]
|
|
if item.resolved_children():
|
|
self._show_path(path + (idx,))
|
|
else:
|
|
if item.action:
|
|
item.action()
|
|
self._close()
|
|
|
|
def _go_back(self) -> None:
|
|
if self._stack_path:
|
|
self._show_path(tuple(self._stack_path[:-1]))
|
|
else:
|
|
self._close()
|
|
|
|
def _close(self) -> None:
|
|
self.set_visible(False)
|
|
if self._tick_id is not None:
|
|
self.remove_tick_callback(self._tick_id)
|
|
self._tick_id = None
|
|
if self._on_close:
|
|
self._on_close()
|
|
|
|
def _on_key(self, _ctrl, keyval, _keycode, _state) -> bool:
|
|
if keyval == Gdk.KEY_Escape:
|
|
self._close()
|
|
return True
|
|
if keyval == Gdk.KEY_BackSpace:
|
|
self._go_back()
|
|
return True
|
|
return False
|
|
|
|
# -- external control ----------------------------------------------------
|
|
def set_root(self, root: MenuItem) -> None:
|
|
"""Swap the whole tree (e.g. power-only <-> full category menu). Any
|
|
cached pages belonged to the old tree's indices, so they're dropped."""
|
|
pages = self._gtkstack.get_pages()
|
|
for child in [pages.get_item(i).get_child() for i in range(pages.get_n_items())]:
|
|
self._gtkstack.remove(child)
|
|
self._pages.clear()
|
|
self._page_rings.clear()
|
|
self._current_ring = None
|
|
self._root = root
|
|
|
|
def open_at_root(self) -> None:
|
|
"""Reset to the top of the tree (dynamic pages along the way get rebuilt
|
|
the next time they're actually visited, not eagerly here)."""
|
|
self._show_path(())
|
|
self.set_visible(True)
|
|
self.present()
|
|
if self._satellites_enabled and self._tick_id is None:
|
|
self._tick_id = self.add_tick_callback(self._on_tick)
|