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"""
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Vygeneruje A4 cheat sheet pro Calcudoku 4x4 — kombinace sčítání, násobení, dělení.
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"""
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import os
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import sys
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from itertools import combinations
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from math import prod
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from pathlib import Path
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sys.stdout.reconfigure(encoding="utf-8")
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from reportlab.lib import colors
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from reportlab.lib.pagesizes import A4
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from reportlab.lib.units import cm
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from reportlab.pdfbase import pdfmetrics
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from reportlab.pdfbase.ttfonts import TTFont
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from reportlab.pdfgen.canvas import Canvas
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_fonts_dir = os.path.join(os.environ.get("WINDIR", r"C:\Windows"), "Fonts")
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pdfmetrics.registerFont(TTFont("Arial", os.path.join(_fonts_dir, "arial.ttf")))
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pdfmetrics.registerFont(TTFont("ArialBold", os.path.join(_fonts_dir, "arialbd.ttf")))
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OUTPUT = Path(__file__).parent / "cheatsheet_4x4.pdf"
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DIGITS = range(1, 5)
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PAGE_W, PAGE_H = A4
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MARGIN = 1.8 * cm
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# Barvy sekcí
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COL_HEADER_BG = colors.Color(0.20, 0.35, 0.55)
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COL_HEADER_FG = colors.white
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ROW_HEADER_BG = colors.Color(0.88, 0.92, 0.97)
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ROW_ALT_BG = colors.Color(0.96, 0.97, 1.00)
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ROW_WHITE_BG = colors.white
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SECTION_COLORS = {
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"+": colors.Color(0.18, 0.48, 0.30), # zelená
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"*": colors.Color(0.55, 0.20, 0.20), # červená
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"/": colors.Color(0.55, 0.40, 0.10), # oranžová
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}
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SECTION_LABELS = {"+": "SČÍTÁNÍ +", "*": "NÁSOBENÍ ×", "/": "DĚLENÍ ÷"}
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def build_table(op: str) -> dict:
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"""Vrátí {výsledek: {n_buněk: [combo, ...]}} pro daný operátor."""
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results: dict = {}
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for n in range(2, len(DIGITS) + 1):
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for combo in combinations(DIGITS, n):
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if op == "+":
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val = sum(combo)
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elif op == "*":
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val = prod(combo)
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elif op == "/":
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# dělení: největší / zbytek (seřazeno desc)
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s = sorted(combo, reverse=True)
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val = s[0]
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for x in s[1:]:
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val //= x
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# jen celočíselné výsledky odpovídající skutečnému dělení
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check = s[0]
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for x in s[1:]:
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if check % x != 0:
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val = None
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break
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check //= x
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if val is None:
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continue
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results.setdefault(val, {}).setdefault(n, []).append(combo)
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return results
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def combo_str(combo: tuple, op: str) -> str:
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sym = {"+" : "+", "*": "×", "/": "÷"}[op]
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return sym.join(str(d) for d in combo)
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def draw_section(c: Canvas, op: str, x: float, y: float, width: float) -> float:
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"""Vykreslí sekci pro jeden operátor. Vrátí y-souřadnici konce sekce."""
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table = build_table(op)
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all_ns = sorted({n for sub in table.values() for n in sub})
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col_label_w = 1.1 * cm
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col_w = (width - col_label_w) / len(all_ns)
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row_h = 0.72 * cm
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header_h = 0.8 * cm
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section_color = SECTION_COLORS[op]
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# Nadpis sekce
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c.setFillColor(section_color)
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c.rect(x, y - 0.75 * cm, width, 0.75 * cm, fill=1, stroke=0)
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c.setFillColor(colors.white)
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c.setFont("ArialBold", 13)
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c.drawString(x + 0.3 * cm, y - 0.55 * cm, SECTION_LABELS[op])
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y -= 0.75 * cm
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# Záhlaví sloupců (počet buněk)
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c.setFillColor(COL_HEADER_BG)
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c.rect(x, y - header_h, width, header_h, fill=1, stroke=0)
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c.setFillColor(COL_HEADER_FG)
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c.setFont("ArialBold", 9)
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c.drawCentredString(x + col_label_w / 2, y - header_h + 0.22 * cm, "výsledek")
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for i, n in enumerate(all_ns):
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cx = x + col_label_w + i * col_w + col_w / 2
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c.drawCentredString(cx, y - header_h + 0.22 * cm, f"{n} buňky" if n < 4 else "4 buňky")
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y -= header_h
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# Řádky
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for ridx, result in enumerate(sorted(table.keys())):
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bg = ROW_ALT_BG if ridx % 2 == 0 else ROW_WHITE_BG
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c.setFillColor(bg)
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c.rect(x, y - row_h, width, row_h, fill=1, stroke=0)
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# Výsledek
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c.setFillColor(section_color)
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c.rect(x, y - row_h, col_label_w, row_h, fill=1, stroke=0)
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c.setFillColor(colors.white)
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c.setFont("ArialBold", 11)
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c.drawCentredString(x + col_label_w / 2, y - row_h + 0.18 * cm, str(result))
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# Kombinace
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c.setFillColor(colors.Color(0.1, 0.1, 0.1))
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for i, n in enumerate(all_ns):
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cx = x + col_label_w + i * col_w
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combos = table[result].get(n, [])
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if not combos:
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# šedá pomlčka
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c.setFillColor(colors.Color(0.75, 0.75, 0.75))
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c.setFont("Arial", 9)
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c.drawCentredString(cx + col_w / 2, y - row_h + 0.18 * cm, "—")
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c.setFillColor(colors.Color(0.1, 0.1, 0.1))
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else:
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# více kombinací pod sebou
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line_h = row_h / len(combos)
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for ci, combo in enumerate(combos):
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text = combo_str(combo, op)
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ty = y - ci * line_h - line_h + 0.16 * cm
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c.setFont("ArialBold" if len(combos) == 1 else "Arial", 9 if len(combos) > 1 else 10)
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c.drawCentredString(cx + col_w / 2, ty, text)
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y -= row_h
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# Spodní linka sekce
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c.setStrokeColor(section_color)
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c.setLineWidth(1.2)
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c.line(x, y, x + width, y)
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c.setLineWidth(0.5)
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return y
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def main():
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c = Canvas(str(OUTPUT), pagesize=A4)
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width = PAGE_W - 2 * MARGIN
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y = PAGE_H - 1.4 * cm
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# Hlavní nadpis
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c.setFillColor(colors.Color(0.12, 0.12, 0.30))
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c.setFont("ArialBold", 18)
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c.drawCentredString(PAGE_W / 2, y - 0.6 * cm, "Calcudoku 4×4 — Cheat Sheet")
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c.setFont("Arial", 9)
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c.setFillColor(colors.Color(0.4, 0.4, 0.4))
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c.drawCentredString(PAGE_W / 2, y - 1.05 * cm, "Číslice 1–4, v každé kleci bez opakování")
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y -= 1.5 * cm
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gap = 0.45 * cm
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for op in ("+", "*", "/"):
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y = draw_section(c, op, MARGIN, y, width)
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y -= gap
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c.save()
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print(f"PDF uloženo: {OUTPUT}")
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if __name__ == "__main__":
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main()
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