Flatten budget-app contents into repo root

2026-10-29 20:41:01 +00:00
parent c9fd26f1c7
commit 93f2696764
95 changed files with 184 additions and 187 deletions
@@ -0,0 +1,110 @@
+"""Inline SVG charts, so the same markup renders in the browser and in WeasyPrint."""
+import math
+from html import escape
+
+BLUE = "#2f6fd6"
+ORANGE = "#e8632b"
+INK = "#1d1d1f"
+MUTED = "#6b6b70"
+GRID = "#e4e4e8"
+
+
+def nice_ticks(lo: float, hi: float, count: int = 8) -> list[float]:
+    if hi <= lo:
+        hi = lo + 1
+    raw = (hi - lo) / count
+    mag = 10 ** math.floor(math.log10(raw))
+    step = next(m * mag for m in (1, 2, 2.5, 5, 10) if m * mag >= raw)
+    start = math.floor(lo / step) * step
+    ticks, v = [], start
+    while v <= hi + step * 0.001:
+        ticks.append(round(v, 10))
+        v += step
+    if ticks[-1] < hi:
+        ticks.append(ticks[-1] + step)
+    return ticks
+
+
+def _wrap(text: str, width: int = 30, lines: int = 2) -> list[str]:
+    words, out, cur = text.split(), [], ""
+    for w in words:
+        if len(cur) + len(w) + (1 if cur else 0) <= width:
+            cur = f"{cur} {w}".strip()
+        else:
+            out.append(cur)
+            cur = w
+    out.append(cur)
+    out = [o for o in out if o]
+    if len(out) > lines:
+        out = out[:lines]
+        out[-1] = out[-1][: width - 1].rstrip() + "…"
+    return [o if len(o) <= width else o[: width - 1] + "…" for o in out] or [""]
+
+
+def grouped_bars(rows: list[tuple[str, float, float]], fmt_tick, fmt_value=None, width: int = 900,
+                 height: int = 490) -> str:
+    """Horizontal bars, two per row (prior in blue, adjusted in orange), sized to fill width x height."""
+    if not rows:
+        return ""
+    label_w = 250
+    top, bottom = 8, 30
+    row_h = min(130.0, (height - top - bottom) / len(rows))
+    bar_h = min(row_h * 0.34, 36)
+    plot_w = width - label_w - (80 if fmt_value else 24)
+    height = round(top + bottom + row_h * len(rows))
+    hi = max(max(p, a) for _, p, a in rows) or 1
+    ticks = nice_ticks(0, hi, 8)
+    x = lambda v: label_w + plot_w * v / ticks[-1]
+    parts = [f'<svg viewBox="0 0 {width} {height}" xmlns="http://www.w3.org/2000/svg" font-family="DejaVu Sans, Liberation Sans, Arial, sans-serif" class="chart">']
+    for t in ticks:
+        parts.append(f'<line x1="{x(t):.1f}" x2="{x(t):.1f}" y1="{top}" y2="{height - bottom}" stroke="{GRID}"/>')
+        parts.append(f'<text x="{x(t):.1f}" y="{height - bottom + 18}" font-size="12" text-anchor="middle" fill="{MUTED}">{escape(fmt_tick(t))}</text>')
+    for i, (label, prior, adjusted) in enumerate(rows):
+        y0 = top + i * row_h
+        cy = y0 + row_h / 2
+        fs = 13 if row_h >= 22 else 11.5
+        wrapped = _wrap(label, 34, 2 if row_h >= 30 else 1)
+        for j, chunk in enumerate(wrapped):
+            dy = (j - (len(wrapped) - 1) / 2) * (fs + 2) + fs / 3
+            parts.append(f'<text x="{label_w - 10}" y="{cy + dy:.1f}" font-size="{fs}" text-anchor="end" fill="{INK}">{escape(chunk)}</text>')
+        for k, (value, colour) in enumerate(((prior, BLUE), (adjusted, ORANGE))):
+            by = cy - bar_h - 1 + k * (bar_h + 2)
+            w = max(x(max(value, 0)) - label_w, 0)
+            parts.append(f'<rect x="{label_w}" y="{by:.1f}" width="{w:.1f}" height="{bar_h:.1f}" fill="{colour}"/>')
+            if fmt_value and row_h >= 26:
+                vfs = min(12, bar_h + 1)
+                parts.append(f'<text x="{label_w + w + 5:.1f}" y="{by + bar_h / 2 + vfs / 3:.1f}" font-size="{vfs:.1f}" fill="{MUTED}">{escape(fmt_value(value))}</text>')
+    parts.append(f'<line x1="{label_w}" x2="{label_w}" y1="{top}" y2="{height - bottom}" stroke="{MUTED}"/>')
+    parts.append("</svg>")
+    return "".join(parts)
+
+
+def change_bars(rows: list[tuple[str, float]], fmt_value, width: int = 900, height: int = 520) -> str:
+    """Ranked % change per category; increases orange, decreases blue."""
+    if not rows:
+        return ""
+    label_w, top, bottom = 270, 8, 30
+    row_h = min(60.0, (height - top - bottom) / len(rows))
+    bar = min(row_h * 0.6, 28)
+    plot_w = width - label_w - 90
+    height = round(top + bottom + row_h * len(rows))
+    lo = min(0.0, min(v for _, v in rows))
+    hi = max(0.0, max(v for _, v in rows)) or 1
+    ticks = nice_ticks(lo, hi, 8)
+    span = ticks[-1] - ticks[0]
+    x = lambda v: label_w + plot_w * (v - ticks[0]) / span
+    parts = [f'<svg viewBox="0 0 {width} {height}" xmlns="http://www.w3.org/2000/svg" font-family="DejaVu Sans, Liberation Sans, Arial, sans-serif" class="chart">']
+    for t in ticks:
+        parts.append(f'<line x1="{x(t):.1f}" x2="{x(t):.1f}" y1="{top}" y2="{height - bottom}" stroke="{GRID}"/>')
+        parts.append(f'<text x="{x(t):.1f}" y="{height - bottom + 18}" font-size="12" text-anchor="middle" fill="{MUTED}">{"+" if t > 0 else ""}{t:g}%</text>')
+    for i, (label, value) in enumerate(rows):
+        cy = top + i * row_h + row_h / 2
+        x0, x1 = sorted((x(0), x(value)))
+        colour = ORANGE if value > 0 else BLUE
+        parts.append(f'<text x="{label_w - 10}" y="{cy + 4.5:.1f}" font-size="13" text-anchor="end" fill="{INK}">{escape(_wrap(label, 38, 1)[0])}</text>')
+        parts.append(f'<rect x="{x0:.1f}" y="{cy - bar / 2:.1f}" width="{max(x1 - x0, 1):.1f}" height="{bar:.1f}" fill="{colour}"/>')
+        tx, anchor = (x1 + 6, "start") if value >= 0 else (x0 - 6, "end")
+        parts.append(f'<text x="{tx:.1f}" y="{cy + 4.5:.1f}" font-size="12.5" font-weight="bold" text-anchor="{anchor}" fill="{INK}">{escape(fmt_value(value))}</text>')
+    parts.append(f'<line x1="{x(0):.1f}" x2="{x(0):.1f}" y1="{top}" y2="{height - bottom}" stroke="{MUTED}"/>')
+    parts.append("</svg>")
+    return "".join(parts)