154 lines
6.9 KiB
Python
154 lines
6.9 KiB
Python
"""
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RadarChart — переиспользуемый виджет 2D паутинной диаграммы (ft.Stack).
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Отрицательные значения — красный полигон, положительные — фиолетовый.
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Параметры:
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items — список осей из API /responses/{id}/radar:
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[{dimension_name, dimension_color, dimension_position, value}, ...]
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max_val — максимум на шкале (default 14 — для теста Голланда)
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"""
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import math
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import flet as ft
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import flet.canvas as cv
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import designer as ds
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# ── размеры ─────────────────────────────────────────────────────────────────
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_CS = 260 # размер canvas
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_CX = _CS // 2
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_CY = _CS // 2
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_R = 78 # радиус внешнего кольца
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_PAD = 95 # отступ вокруг canvas под подписи
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_LBL_R = _R + 52 # расстояние от центра до подписи (в координатах Stack)
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_W_LBL = 130 # ширина контейнера подписи
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def _axis_xy(n: int, i: int, frac: float = 1.0) -> tuple[float, float]:
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a = math.radians(-90.0 + 360.0 * i / n)
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return _CX + _R * frac * math.cos(a), _CY + _R * frac * math.sin(a)
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def _closed_path(pts: list[tuple]) -> list:
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els = [cv.Path.MoveTo(*pts[0])]
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for p in pts[1:]:
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els.append(cv.Path.LineTo(*p))
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els.append(cv.Path.Close())
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return els
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class RadarChart(ft.Stack):
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"""2D паутинная диаграмма. Отрицательные=красный, позитивные=синий."""
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def __init__(self, items: list[dict], max_val: float = 14.0):
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n = len(items)
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shapes: list = []
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vals = [it["value"] for it in items]
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max_abs = max((abs(v) for v in vals), default=1.0) if vals else 1.0
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if max_val > 0:
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max_abs = max(max_abs, max_val)
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max_abs = max(max_abs, 1.0)
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# ── Сетка ─────────────────────────────────────────────────────────────
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for lvl in range(1, 6):
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ring = [_axis_xy(n, i, lvl / 5) for i in range(n)]
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alpha = int((0.10 + 0.09 * (lvl / 5)) * 255)
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shapes.append(cv.Path(
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_closed_path(ring),
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paint=ft.Paint(
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style=ft.PaintingStyle.STROKE,
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stroke_width=1,
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color=f"#{alpha:02X}F4EFFA",
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),
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))
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# ── Оси от центра ──────────────────────────────────────────────────────
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for i in range(n):
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x, y = _axis_xy(n, i)
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shapes.append(cv.Path(
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[cv.Path.MoveTo(_CX, _CY), cv.Path.LineTo(x, y)],
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paint=ft.Paint(stroke_width=1, color="#38F4EFFA"),
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))
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# ── Полигоны данных ────────────────────────────────────────────────────
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neg_pts = [_axis_xy(n, i, max(0.0, min(-it["value"] / max_abs, 1.0))) for i, it in enumerate(items)]
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pos_pts = [_axis_xy(n, i, max(0.0, min( it["value"] / max_abs, 1.0))) for i, it in enumerate(items)]
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# Красный (отрицательные)
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shapes.append(cv.Path(_closed_path(neg_pts),
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paint=ft.Paint(style=ft.PaintingStyle.FILL, color="#50CC3030")))
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shapes.append(cv.Path(_closed_path(neg_pts),
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paint=ft.Paint(style=ft.PaintingStyle.STROKE, stroke_width=2.5, color="#FF7070")))
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# Фиолетовый (положительные)
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shapes.append(cv.Path(_closed_path(pos_pts),
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paint=ft.Paint(style=ft.PaintingStyle.FILL, color="#505030A0")))
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shapes.append(cv.Path(_closed_path(pos_pts),
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paint=ft.Paint(style=ft.PaintingStyle.STROKE, stroke_width=2.5, color="#A080FF")))
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# ── Точки на вершинах ──────────────────────────────────────────────────
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for i, it in enumerate(items):
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v = it["value"]
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if abs(v) > 0.05:
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px, py = _axis_xy(n, i, abs(v) / max_abs)
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col = "#FF7070" if v < 0 else "#A080FF"
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shapes.append(cv.Circle(px, py, 4, paint=ft.Paint(color=col)))
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shapes.append(cv.Circle(px, py, 4,
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paint=ft.Paint(style=ft.PaintingStyle.STROKE, stroke_width=1.5, color="#F4EFFA")))
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canvas = cv.Canvas(shapes=shapes, width=_CS, height=_CS)
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# ── Подписи осей в Stack-координатах ─────────────────────────────────
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sw = _CS + 2 * _PAD
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sh = _CS + 2 * _PAD
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ccx = _PAD + _CX # центр графика в Stack
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ccy = _PAD + _CY
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labels: list[ft.Control] = []
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for i, item in enumerate(items):
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a = math.radians(-90.0 + 360.0 * i / n)
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lx = ccx + _LBL_R * math.cos(a)
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ly = ccy + _LBL_R * math.sin(a)
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col = item.get("dimension_color") or ds.colors.primary
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labels.append(ft.Container(
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left=lx - _W_LBL / 2,
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top=ly - 24,
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width=_W_LBL,
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content=ft.Column(
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spacing=1,
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horizontal_alignment=ft.CrossAxisAlignment.CENTER,
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controls=[
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ft.Text(
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item["dimension_name"],
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size=10,
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color=col,
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text_align=ft.TextAlign.CENTER,
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weight=ft.FontWeight.BOLD,
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overflow=ft.TextOverflow.FADE,
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max_lines=2,
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no_wrap=False,
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),
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ft.Text(
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str(int(item["value"])),
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size=11,
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color=ds.colors.primary,
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text_align=ft.TextAlign.CENTER,
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),
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],
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),
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))
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super().__init__(
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width=sw,
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height=sh,
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controls=[
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ft.Container(
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left=_PAD,
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top=_PAD,
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width=_CS,
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height=_CS,
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content=canvas,
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),
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*labels,
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],
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)
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