按顺序修改 tcolorbox 中的特定海报框

Question

以下是 tcolorbox 中带有海报的序列示例：

\documentclass{article}

\usepackage{tcolorbox}
\tcbuselibrary{poster}

\usepackage{lipsum}

\begin{document}

\begin{tcbposter}[
  poster = {showframe,
    columns=2,
    rows=2,
    spacing=3mm,
    height=18cm,
    width=12cm,
  },
  ]

  \posterbox[
  colframe = red,
  ]{
    name=A,
    sequence = 1 between top and row2 then
    2 between top and bottom
  }{\scriptsize\lipsum[1]}

\end{tcbposter}

\end{document}

结果如下：

我想知道是否可以只更改名为 A2 的块的设置。例如，我想在为空时禁用占位符样式或选择与 A1 不同的颜色。

此外，我想知道我是否可以将长文本放入整个序列中。如果我使用“适合”选项，我会得到一个独特的长框，而不是两个分开的框：

\documentclass{article}

\usepackage{tcolorbox}
\tcbuselibrary{poster}

\usepackage{lipsum}

\begin{document}

\begin{tcbposter}[
  poster = {showframe,
    columns=2,
    rows=2,
    spacing=3mm,
    height=14cm,
    width=12cm,
  },
  ]

  \posterbox[
  colframe = red,
  fit to=5.85cm and 20cm,
  ]{
    name=A,
    sequence = 1 between top and row2 then
    2 between top and bottom
  }{\lipsum[1]}

\end{tcbposter}

\end{document}

编辑：
这是基于@BambOo 答案和不透明度选项的解决方案（如果它对某人有用）。

\documentclass{article}

\usepackage{tcolorbox}
\tcbuselibrary{poster}

\usepackage{lipsum}

\begin{document}

\begin{tcbposter}[
  poster = {showframe,
    columns=2,
    rows=2,
    spacing=3mm,
    height=14cm,
    width=12cm,
  },
  /tcb/placeholder/.style={
    enhanced jigsaw,
    opacityframe=0.0,
    opacityback=0.0}
  ]



  \posterbox[
  colframe = red,
  ]{
    name=A,
    column = 1,
    row=1,
  }{}

  \posterbox[
  colframe = blue,
  ]{
    name=A,
    column = 2,
    row=1,
    rowspan=2,
  }{}


  \posterbox[
  enhanced jigsaw,
  colframe = red,
  opacityframe=0.0,
  opacityback=0.0
  ]{
    name=A,
    sequence = 1 between top and row2 then
    2 between top and bottom
  }{\lipsum[1]}

\end{tcbposter}

\end{document}

Answer 1

您可以\posterbox使用column和between代替 来定义您的sequence。请参阅tcolorboxv4.14 手册第 19.2 节第 399 页

\documentclass{article}

\usepackage{tcolorbox}
\tcbuselibrary{poster}

\usepackage{lipsum}

\begin{document}

\begin{tcbposter}[
  poster = {showframe,
    columns=2,
    rows=2,
    spacing=3mm,
    height=18cm,
    width=12cm,
  },
  ]

  \posterbox[
  colframe = red,
  ]{
    name=A1,
    column=1,
    between= top and row2
  }{\scriptsize\lipsum[1]}

  \posterbox[
  colframe = blue,
  ]{
    name=A2,
    column=2,
    between= top and bottom
  }{\scriptsize\lipsum[1]}

\end{tcbposter}

\end{document}

编辑解决方案维持sequence方法。

该解决方案基于对placeholder风格的重新定义tcolorbox。

\documentclass{article}

\usepackage{tcolorbox}
\tcbuselibrary{poster}

\usepackage{lipsum}

\begin{document}

 %\tcbset{placeholder={colframe=blue,colback=blue}}
\begin{tcbposter}[
  poster = {showframe,columns=2,rows=2,spacing=3mm,height=14cm,width=12cm},
  boxes={colframe=red,colback=white},
  /tcb/placeholder/.style={colframe=blue,colback=white}
  ]
  \posterbox[
    colframe = red
  ]{name=A,
    sequence = 
    1 between top and row2 then
    2 between top and bottom
  }{\lipsum[1]
  }

\end{tcbposter}

\end{document}

为空时的结果

填满后的结果