[latex] Add command problem_slides

bin/export.py

@@ -258,6 +258,7 @@ def build_contest_zip(problems, zipfiles, outfile, statement_language):
             ]
             + list(Path('.').glob(f'contest*.{statement_language}.pdf'))
             + list(Path('.').glob(f'solutions*.{statement_language}.pdf'))
+            + list(Path('.').glob(f'problem-slides*.{statement_language}.pdf'))
         ):
             if Path(fname).is_file():
                 zf.write(

bin/latex.py

@@ -4,13 +4,14 @@
 import re
 import shutil
 import sys
+from enum import Enum
 from pathlib import Path
 from typing import Optional
 
 from colorama import Fore, Style
 
 import config
-from contest import contest_yaml
+from contest import contest_yaml, problems_yaml
 import problem
 from util import (
     copy_and_substitute,
@@ -387,19 +388,27 @@ def find_logo() -> Path:
     return config.tools_root / 'latex' / 'images' / 'logo-not-found.pdf'
 
 
+class PdfType(str, Enum):
+    PROBLEM = 'problem'
+    PROBLEM_SLIDE = 'problem-slide'
+    SOLUTION = 'solution'
+
+
 def build_contest_pdf(
     contest: str,
     problems: list["problem.Problem"],
     tmpdir: Path,
     language: str,
-    solutions=False,
+    build_type=PdfType.PROBLEM,
     web=False,
 ) -> bool:
     builddir = tmpdir / contest / 'latex' / language
     builddir.mkdir(parents=True, exist_ok=True)
-    build_type = 'solution' if solutions else 'problem'
 
-    main_file = 'solutions' if solutions else 'contest'
+    problem_slides = build_type == PdfType.PROBLEM_SLIDE
+    solutions = build_type == PdfType.SOLUTION
+
+    main_file = 'problem-slides' if problem_slides else 'solutions' if solutions else 'contest'
     main_file += '-web.tex' if web else '.tex'
 
     bar = PrintBar(f'{main_file[:-3]}{language}.pdf')
@@ -448,6 +457,8 @@ def build_contest_pdf(
         else config.tools_root / 'latex' / f'contest-{build_type}.tex'
     ).read_text()
 
+    probyaml = problems_yaml()
+
     for problem in problems:
         if build_type == 'problem':
             prepare_problem(problem, language)
@@ -465,12 +476,28 @@ def build_contest_pdf(
                 bar.warn(f'solution.{language}.tex not found', problem.name)
                 continue
 
+        background = next(
+            (p['rgb'] for p in probyaml if p['id'] == str(problem.path) and 'rgb' in p), '#ffffff'
+        )[1:]
+        # Source: https://github.com/DOMjudge/domjudge/blob/095854650facda41dbb40966e70199840b887e33/webapp/src/Twig/TwigExtension.php#L1056
+        foreground = (
+            '000000'
+            if sum(int(background[i : i + 2], 16) for i in range(0, 6, 2)) > 450
+            else 'ffffff'
+        )
+        border = "".join(
+            ("00" + hex(max(0, int(background[i : i + 2], 16) - 64))[2:])[-2:]
+            for i in range(0, 6, 2)
+        )
         problems_data += substitute(
             per_problem_data,
             {
                 'problemlabel': problem.label,
                 'problemyamlname': problem.settings.name[language].replace('_', ' '),
                 'problemauthor': problem.settings.author,
+                'problembackground': background,
+                'problemforeground': foreground,
+                'problemborder': border,
                 'timelimit': get_tl(problem),
                 'problemdir': problem.path.absolute().as_posix(),
                 'problemdirname': problem.name,
@@ -492,9 +519,9 @@ def build_contest_pdf(
     return build_latex_pdf(builddir, Path(main_file), language, bar)
 
 
-def build_contest_pdfs(contest, problems, tmpdir, lang=None, solutions=False, web=False):
+def build_contest_pdfs(contest, problems, tmpdir, lang=None, build_type=PdfType.PROBLEM, web=False):
     if lang:
-        return build_contest_pdf(contest, problems, tmpdir, lang, solutions, web)
+        return build_contest_pdf(contest, problems, tmpdir, lang, build_type, web)
 
     """Build contest PDFs for all available languages"""
     statement_languages = set.intersection(*(set(p.statement_languages) for p in problems))
@@ -519,7 +546,7 @@ def build_contest_pdfs(contest, problems, tmpdir, lang=None, solutions=False, we
             color_type=MessageType.FATAL,
         )
     return all(
-        [build_contest_pdf(contest, problems, tmpdir, lang, solutions, web) for lang in languages]
+        build_contest_pdf(contest, problems, tmpdir, lang, build_type, web) for lang in languages
     )
 
 

bin/tools.py

@@ -420,6 +420,26 @@ def build_parser():
     pdfparser.add_argument('--web', action='store_true', help='Create a web version of the pdf.')
     pdfparser.add_argument('-1', action='store_true', help='Only run the LaTeX compiler once.')
 
+    # Problem slides
+    pdfparser = subparsers.add_parser(
+        'problem_slides', parents=[global_parser], help='Build the problem slides pdf.'
+    )
+    # pdfparser.add_argument(
+    #     '--all',
+    #     '-a',
+    #     action='store_true',
+    #     help='Create problem statements for individual problems as well.',
+    # )
+    pdfparser.add_argument('--no-timelimit', action='store_true', help='Do not print timelimits.')
+    pdfparser.add_argument(
+        '--watch',
+        '-w',
+        action='store_true',
+        help='Continuously compile the pdf whenever a `problem_statement.tex` changes. Note that this does not pick up changes to `*.yaml` configuration files.',
+    )
+    # pdfparser.add_argument('--web', action='store_true', help='Create a web version of the pdf.')
+    pdfparser.add_argument('-1', action='store_true', help='Only run the LaTeX compiler once.')
+
     # Solution slides
     solparser = subparsers.add_parser(
         'solutions', parents=[global_parser], help='Build the solution slides pdf.'
@@ -1059,7 +1079,16 @@ def run_parsed_arguments(args):
 
         if action in ['solutions']:
             success &= latex.build_contest_pdfs(
-                contest, problems, tmpdir, solutions=True, web=config.args.web
+                contest, problems, tmpdir, build_type=latex.PdfType.SOLUTION, web=config.args.web
+            )
+
+        if action in ['problem_slides']:
+            success &= latex.build_contest_pdfs(
+                contest,
+                problems,
+                tmpdir,
+                build_type=latex.PdfType.PROBLEM_SLIDE,
+                web=config.args.web,
             )
 
         if action in ['zip']:
@@ -1073,11 +1102,27 @@ def run_parsed_arguments(args):
                     contest, problems, tmpdir, statement_language, web=True
                 )
                 if not config.args.no_solutions:
-                    success &= latex.build_contest_pdfs(
-                        contest, problems, tmpdir, statement_language, solutions=True
+                    success &= latex.build_contest_pdf(
+                        contest,
+                        problems,
+                        tmpdir,
+                        statement_language,
+                        build_type=latex.PdfType.SOLUTION,
+                    )
+                    success &= latex.build_contest_pdf(
+                        contest,
+                        problems,
+                        tmpdir,
+                        statement_language,
+                        build_type=latex.PdfType.SOLUTION,
+                        web=True,
                     )
-                    success &= latex.build_contest_pdfs(
-                        contest, problems, tmpdir, statement_language, solutions=True, web=True
+                    success &= latex.build_contest_pdf(
+                        contest,
+                        problems,
+                        tmpdir,
+                        statement_language,
+                        build_type=latex.PdfType.PROBLEM_SLIDE,
                     )
 
             outfile = contest + '.zip'

latex/contest-problem-slide.tex

@@ -0,0 +1,17 @@
+\begingroup\graphicspath{{{%problemdir%}/problem_statement/}}
+	\renewcommand{\problemlabel}{{%problemlabel%}}
+	\renewcommand{\problemyamlname}{{%problemyamlname%}}
+	\renewcommand{\problemauthor}{{%problemauthor%}}
+	\renewcommand{\problembackground}{{%problembackground%}}
+	\renewcommand{\problemforeground}{{%problemforeground%}}
+	\renewcommand{\problemborder}{{%problemborder%}}
+	\renewcommand{\timelimit}{{%timelimit%}}
+	\input{{%problemdir%}/problem_statement/problem-slide.\lang.tex}
+	\renewcommand{\problemlabel}{}
+	\renewcommand{\problemyamlname}{}
+	\renewcommand{\problemauthor}{}
+	\renewcommand{\problembackground}{}
+	\renewcommand{\problemforeground}{}
+	\renewcommand{\problemborder}{}
+	\renewcommand{\timelimit}{}
+\endgroup

latex/contest-solution.tex

@@ -5,4 +5,7 @@
 	\renewcommand{\timelimit}{{%timelimit%}}
 	\input{{%problemdir%}/problem_statement/solution.\lang.tex}
 	\renewcommand{\problemlabel}{}
+	\renewcommand{\problemyamlname}{}
+	\renewcommand{\problemauthor}{}
+	\renewcommand{\timelimit}{}
 \endgroup

latex/problem-slides.tex

@@ -0,0 +1,101 @@
+\documentclass[rgb,dvipsnames,aspectratio=169,9pt,t]{beamer}
+
+\usepackage[T1, OT1]{fontenc}
+\DeclareTextSymbolDefault{\dh}{T1}
+\usepackage[english]{babel}
+\usepackage{lmodern}
+
+%-------------------------------------------------------------------------------
+% The following are required for most problems:
+%-------------------------------------------------------------------------------
+\usepackage{amsmath,amssymb}
+\usepackage{pgf,tikz}
+\usepackage{mathrsfs}
+\usetikzlibrary{arrows}
+\usetikzlibrary{shapes}
+\usetikzlibrary{backgrounds}
+\usetikzlibrary{patterns}
+\usetikzlibrary{positioning}
+\usepackage{pgfplots}
+\usepackage{pgfplotstable}
+\pgfplotsset{compat=1.15}
+\usepackage{graphicx}
+\usepackage{listings}
+%\usepackage{subcaption}
+\usepackage{algorithm}
+\usepackage[makeroom]{cancel}
+\usepackage[noend]{algpseudocode}
+\usepackage{standalone}
+\usepackage{ifthen}
+\usepackage{tcolorbox}
+\usepackage[autoplay,controls,loop,poster=last]{animate}
+
+\lstset{
+  backgroundcolor=\color{white},
+  tabsize=4,
+  language=python,
+  basicstyle=\footnotesize\ttfamily,
+  breaklines=true,
+  keywordstyle=\color[rgb]{0, 0, 1},
+  commentstyle=\color[rgb]{0, 0.5, 0},
+  stringstyle=\color{red}
+}
+
+\newcommand{\timelimit}{0.0s}
+\newcommand{\problemlabel}{} % Empty to hide activity chart
+\newcommand{\problemauthor}{Problem author}
+\newcommand{\problembackground}{}
+\newcommand{\problemforeground}{}
+\newcommand{\problemborder}{}
+% TODO: Clean these up
+\newcommand{\problemyamlname}{Problem name}
+\newcommand{\fullproblemtitle}{\problemlabel: \problemyamlname}
+\newcommand{\problemtitle}{\problemyamlname}
+
+\usetheme[numbering=none,block=fill]{metropolis}
+
+\newcommand{\illustration}[3]{
+  \begin{column}[T]{#1\textwidth}
+    \includegraphics[width=\textwidth]{#2}
+    \ifstrempty{#3}{
+      \vspace{-5pt}
+    }{
+      \begin{flushright}
+        \vspace{-5pt}
+        \tiny #3
+      \end{flushright}
+    }
+  \end{column}
+}
+
+\setbeamertemplate{frametitle}{%
+    \nointerlineskip%
+    \vspace{1em}%
+    \begin{minipage}{0.06\paperwidth}%
+        \begin{tikzpicture}
+            \definecolor{problembackground}{HTML}{\problembackground}
+            \definecolor{problemforeground}{HTML}{\problemforeground}
+            \definecolor{problemborder}{HTML}{\problemborder}
+            \node[rectangle,rounded corners,thick,minimum size=2em,draw=problemborder,fill=problembackground,text=problemforeground] (0, 0) {\Huge\problemlabel};
+        \end{tikzpicture}
+    \end{minipage}%
+    \begin{minipage}{0.8\paperwidth}%
+        \color{black}%
+        \ifdefempty{\problemlabel}{%
+            \insertframetitle\strut%
+        }{%
+            \problemtitle%
+            \\[0.3em]%
+            \tiny%
+            Time limit: \timelimit{}s%
+            \quad\quad%
+            Problem Author: \problemauthor%
+            \strut%
+        }%
+    \end{minipage}%
+    \hfill%
+}
+
+\begin{document}
+\input{./contest-problem-slides.tex}
+\end{document}