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带有几何图形和 tcolorbox 的考试布局

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带有几何图形和 tcolorbox 的考试布局

以下是几个问题：

1-如何使第一光栅行的使用\tcboxfit不扭曲布局，如下所示？

在此处输入图片描述

headheight2-如何精确计算传递给选项的尺寸总和geometry ，以便页眉恰好从页面顶部边框开始？

3- 为什么不在\iflastpage{\enlargethispage{-1cm}}{}里面\NewDocumentCommand{\FillAnswerRules}为文本腾出空间End of the Exam？

在此处输入图片描述

\baselineskip4-为什么尽管设置了，但页眉和主流文本之间的空格（接近）并没有消除headsep = 0pt？

在此处输入图片描述

\documentclass{exam}
\usepackage[fontsize = 14pt]{scrextend}
\usepackage{lipsum}
\usepackage[xparse,breakable,raster,skins]{tcolorbox}
\tcbuselibrary{fitting}

\pagestyle{headandfoot}

\newcommand{\myfooter}{%
    \iflastpage{\raisebox{5pt}[0pt][0pt]{\large End of the Exam}}{}%
    \hrule\vspace{5pt}%
    Instructors%
}

\newcommand\headerBody{%
    \begin{tcbitemize}[
        raster valign = bottom,
        valign = bottom,
        raster columns = 2,
        blankest,
        raster after skip = 1ex,
        ]
        \tcboxfit[height = 3em, add to width = 2cm, halign = flush left,height=3em] University\\Faculty\\Program
        \tcbitem[add to width = -2cm, halign = flush right,] \includegraphics[height = 3em]{example-image}
    \end{tcbitemize}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 3,
        valign = center,
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest
        ]
        \tcboxfit{Final\\Semester}
        \tcboxfit[before upper*=\centering]{Course Code}
        \tcboxfit[halign = flush right]{\textbf{date}\\\textbf{time}}
    \end{tcbraster}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 1,
        valign = center, halign = flush center, 
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest
        ]
        \tcboxfit[interior engine = standard,colback = gray!20, top = 1ex, bottom = 1ex,]{\textbf{Course}}%
    \end{tcbraster}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 1,
        valign = center, halign = flush center,
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest,
        ]
        \tcboxfit[top = 1ex, bottom = 1ex,]{This exam contains.}%
    \end{tcbraster}
    %
    \hrule%
}

\newcommand\headerContents{% https://tex.stackexchange.com/a/547910/2288 
    \begin{tcbraster}[
        fit algorithm=hybrid*,
        raster equal height = rows,
        raster halign = center, raster valign = center,
        raster equal skip = 0mm,
        raster force size = false,
        boxsep = 0pt,
        beforeafter skip = 0pt, 
        leftright skip = 0pt,
        raster right skip = 0pt,
        raster left skip = 0pt,
        raster before skip = 0pt,
        raster after skip = 0pt,
        nobeforeafter,
        height = 2em,
        raster rows=4,
        ]%
        \headerBody%
    \end{tcbraster}%
}


\firstpageheader{}{\headerContents}{}
\runningheader{}{\headerContents}{}

\firstpagefooter{}{\myfooter}{}
\runningfooter{}{\myfooter}{}

\ExplSyntaxOn

\keys_define:nn { diaa / answers }
{
    d .dim_set:N = \l__diaa_answers_distance_dim,
    t .dim_set:N = \l__diaa_answers_thickness_dim,
    c .tl_set:N  = \l__diaa_answers_color_tl,
    d .initial:n = 10mm,
    t .initial:n = 0.2pt,
    c .initial:n = gray,
}

\NewTColorBox { fillAnswerRules } { O{} }
{
    height~fill, text~fill, colback=white, boxrule=2pt, sharp~corners,
    boxsep=0pt, left=10pt, right=10pt, top=8pt, bottom=0pt, #1
}

\NewDocumentCommand{\FillAnswerRules}{O{}}
{
    \iflastpage{\enlargethispage{-1cm}}{}
    \begin{fillAnswerRules}
        \keys_set:nn { diaa / answers } { #1 }
        \leaders \hbox:n
        {
            \makebox[\textwidth][s]
            {
                \color{\l__diaa_answers_color_tl}
                \vrule width 0pt height 0.5\l__diaa_answers_distance_dim
                depth 0.5\l__diaa_answers_distance_dim
                \leaders \hrule height \l__diaa_answers_thickness_dim \hfill
            }
        }\vfill
        \null
    \end{fillAnswerRules}
}

\ExplSyntaxOff

\usepackage[
a4paper,
includehead, 
headsep=0pt,
includefoot, 
foot=0mm, 
bottom=20mm,
headheight = \dimexpr9em+9ex+0pt,
top=0mm,
showframe
]{geometry}

\begin{document}
    \begin{questions}
        \question 
        \begin{parts}
            \part \lipsum[1-2]
                \FillAnswerRules
                \FillAnswerRules
                
            \part \lipsum[1]
                \FillAnswerRules
        \end{parts}
    \end{questions} 
\end{document}

答案1

此解决方案将页眉放入保存框中，以便准确计算页眉高度。它还会在\iflastpage内部之前增加页计数器\FillAnswerRules。

请注意，\tcb@startbox等直到才定义\AtBeginDocument。

\documentclass{exam}
\usepackage[fontsize = 14pt]{scrextend}
\usepackage{lipsum}
\usepackage[xparse,breakable,raster,skins]{tcolorbox}
\tcbuselibrary{fitting}

\pagestyle{headandfoot}

\newcommand{\myfooter}{%
    \iflastpage{\raisebox{\dimexpr \height+\depth+5pt}[0pt][0pt]{\large End of the Exam}}{}%
    \hrule\vspace{5pt}%
    Instructors%
}

\newcommand\headerBody{%
    \begin{tcbitemize}[
        raster valign = bottom,
        valign = bottom,
        raster columns = 2,
        blankest,
        raster after skip = 1ex,
        ]
        \tcboxfit[height = 3em, add to width = 2cm, halign = flush left,height=3em] {University\\Faculty\\Program}
        \tcbitem[add to width = -2cm, halign = flush right,] \includegraphics[height = 3em]{example-image}
    \end{tcbitemize}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 3,
        valign = center,
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest
        ]
        \tcboxfit{Final\\Semester}
        \tcboxfit[before upper*=\centering]{Course Code}
        \tcboxfit[halign = flush right]{\textbf{date}\\\textbf{time}}
    \end{tcbraster}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 1,
        valign = center, halign = flush center, 
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest
        ]
        \tcboxfit[interior engine = standard,colback = gray!20, top = 1ex, bottom = 1ex,]{\textbf{Course}}%
    \end{tcbraster}
    %
    \hrule
    %
    \begin{tcbraster}[
        raster columns = 1,
        valign = center, halign = flush center,
        raster before skip = 1ex,
        raster after skip = 1ex,
        blankest,
        ]
        \tcboxfit[top = 1ex, bottom = 1ex,]{This exam contains.}%
    \end{tcbraster}
    %
    \hrule%
}

\usepackage[a4paper,
includehead, 
headheight=0pt,% will be reset \AtBeginDocument
headsep=0pt,
includefoot, 
foot=0mm, 
bottom=20mm,
top=0mm,
showframe]{geometry}

\newsavebox{\headerbox}
\AtBeginDocument{\savebox{\headerbox}{\begin{minipage}{\textwidth}
    \begin{tcbraster}[
        fit algorithm=hybrid*,
        raster equal height = rows,
        raster halign = center, raster valign = center,
        raster equal skip = 0mm,
        raster force size = false,
        boxsep = 0pt,
        beforeafter skip = 0pt, 
        leftright skip = 0pt,
        raster right skip = 0pt,
        raster left skip = 0pt,
        raster before skip = 0pt,
        raster after skip = 0pt,
        nobeforeafter,
        height = 2em,
        raster rows=4,
        ]%
        \headerBody%
    \end{tcbraster}%
\end{minipage}}

\geometry{headheight = {\dimexpr \ht\headerbox+\dp\headerbox}}
\enlargethispage{-\headheight}% first page only
}% end of \AtBeginDocument

\firstpageheader{}{\usebox\headerbox}{}
\runningheader{}{\usebox\headerbox}{}

\AddToHookNext{shipout/background}{\put({\dimexpr 1in+\oddsidemargin},{\dimexpr 20mm-\paperheight-\baselineskip})%
  {\parbox[t]{\textwidth}{\centering\myfooter}}}% first page footer
%\firstpagefooter{}{\myfooter}{}
\runningfooter{}{\myfooter}{}

\ExplSyntaxOn

\keys_define:nn { diaa / answers }
{
    d .dim_set:N = \l__diaa_answers_distance_dim,
    t .dim_set:N = \l__diaa_answers_thickness_dim,
    c .tl_set:N  = \l__diaa_answers_color_tl,
    d .initial:n = 10mm,
    t .initial:n = 0.2pt,
    c .initial:n = gray,
}

\NewTColorBox { fillAnswerRules } { O{} }
{
    height~fill, text~fill, colback=white, boxrule=2pt, sharp~corners,
    boxsep=0pt, left=10pt, right=10pt, top=8pt, bottom=0pt, #1
}

\NewDocumentCommand{\FillAnswerRules}{O{}}
{\stepcounter{page}\iflastpage{\enlargethispage{-1cm}}{}\addtocounter{page}{-1}% does not affect footer location
        \begin{fillAnswerRules}
        \keys_set:nn { diaa / answers } { #1 }
        \leaders \hbox:n
        {
            \makebox[\textwidth][s]
            {
                \color{\l__diaa_answers_color_tl}
                \vrule width 0pt height 0.5\l__diaa_answers_distance_dim
                depth 0.5\l__diaa_answers_distance_dim
                \leaders \hrule height \l__diaa_answers_thickness_dim \hfill
            }
        }\vfill
        \null
    \end{fillAnswerRules}
}

\ExplSyntaxOff

\begin{document}
    \begin{questions}
        \question 
        \begin{parts}
            \part \lipsum[1-2]
                \FillAnswerRules
                \FillAnswerRules

            \part \lipsum[1]
                \FillAnswerRules
        \end{parts}
    \end{questions} 
    
\end{document}

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