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Question

當我用 Xelatex 編譯時，我無法使用標題顏色的漸變顏色Xbaposter，僅給出簡單的顏色，問題在兩行中headerColorOne=black,並headerColorTwo=lightblue,帶有顏色的定義\definecolor{lightblue}{rgb}{0.145,0.6666,1}。 .cls 檔案可以從以下位置下載CTAN。這 3 行在 MWE 中被標記為有問題：

\documentclass[debug,a0paper,portrait,persian]{xebaposter}

\usepackage{url}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{relsize} % for \smaller
\usepackage{graphicx}
\usepackage{multicol}
\usepackage{xecolor}
\usepackage{wrapfig}
\graphicspath{{images/}}
\usepackage[inline]{enumitem}% for making inline list.
\setlist{noitemsep}% Save space in lists.


\usepackage{ptext}
\usepackage{xepersian}
\settextfont{Yas}

%\usepackage{geometry}
%\geometry{papersize={90cm,170cm},verbose=ture,reset}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%% Some math symbols used in the text
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % Format 
% \newcommand{\RotUP}[1]{\begin{sideways}#1\end{sideways}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % Multicol Settings
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \setlength{\columnsep}{0.7em}
% \setlength{\columnseprule}{0mm}

%% Begin of Document
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
%%% Setting User Defined Background %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%if you want to use your preferred background, you should set background=user in poster settings.
\background{
  \begin{tikzpicture}[remember picture,overlay]%
    \fill [yellow!20] {(current page.south east) rectangle (current page.north west)};%
    \draw (current page.center)+(0pt,0pt) node[anchor=center,opacity=.1]
    {\includegraphics[width=1.1\textwidth]{shariflogo}};
  \end{tikzpicture}%
} 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Here starts the poster
%%---------------------------------------------------------------------------
%% Format it to your taste with the options
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
      \definecolor{silver}{cmyk}{0,0,0,0.3}
      \definecolor{yellow}{cmyk}{0,0,0.9,0.0}
      \definecolor{reddishyellow}{cmyk}{0,0.22,1.0,0.0}
      \definecolor{black}{cmyk}{0,0,0.0,1.0}
      \definecolor{darkYellow}{cmyk}{0,0,1.0,0.5}
      \definecolor{darkSilver}{cmyk}{0,0,0,0.1}

      \definecolor{lightyellow}{cmyk}{0,0,0.3,0.0}
      \definecolor{lighteryellow}{cmyk}{0,0,0.1,0.0}
      \definecolor{lighteryellow}{cmyk}{0,0,0.1,0.0}
      \definecolor{lightestyellow}{cmyk}{0,0,0.05,0.0}



%\definecolor{lightblue}{rgb}{0.145,0.6666,1} % Problem
      \begin{poster}%
      % Poster Options
      {
      eyecatcher=true,
      % Color style
      bgColorOne=lightyellow,
      bgColorTwo=yellow,
      borderColor=reddishyellow,
      headerColorOne=yellow,%headerColorOne=black, %  Problem
      headerColorTwo=reddishyellow,%headerColorTwo=lightblue, %  Problem
%      headerFontColor=silver,
      boxColorOne=red,
      boxColorTwo=lighteryellow,
      % Format of textbox
      textborder=faded,
      % Format of text header
      headerborder=closed,
      headerheight=0.1\textheight,
      headershape=roundedleft,
      headershade=plain,
%      headerfont=\Large, %Sans Serif
      boxshade=shadetb,%plain,
      background=user,%plain,
      linewidth=2pt,
      grid=false,
      }
 % Eye Catcher
 {
      \includegraphics[height=0.07\textheight]{logo}
 }
 % Title
 {عنوان پوستر عنوان پوستر عنوان پوستر عنوان پوستر عنوان پوستر عنوان پوستر عنوان پوستر 
}
 % Authors
 {\large نام۱ نام خانوادگی۱, نام۳ نام خانوادگی۲, نام۳ نام خانوادگی۳ 
 \\%[1em]
 {\normalsize\texttt{\lr{[email protected], [email protected], [email protected]}}}}
 % University logo
 {
\begin{tabular}{r}
    \includegraphics[height=0.07 \textheight]{shariflogo}\\
\end{tabular}
 }

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Now define the boxes that make up the poster
%%%---------------------------------------------------------------------------
%%% Each box has a name and can be placed absolutely or relatively.
%%% The only inconvenience is that you can only specify a relative position 
%%% towards an already declared box. So if you have a box attached to the 
%%% bottom, one to the top and a third one which should be inbetween, you 
%%% have to specify the top and bottom boxes before you specify the middle 
%%% box.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=introduction,column=0,row=0]{\textxecolor{red}{مقدمه}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
برای تست بسته سعی می‌کنم که یک خط فارسی بنگارم\LTRfootnote{test} تا نتیجه آن را در این پوستر مشاهد کنم\footnote{تست پانویسی}.
\end{posterbox}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=phase2,column=1,span=1]{فاز دو: پردازش}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{wrapfigure}{r}{.6\textwidth}
%\centering
%  \vspace{-10pt}
%{
\includegraphics[scale=.5]{fig3}
%}
%  \vspace{-20pt}
\end{wrapfigure}

\ptext[2]

محاسبات لازم:
\begin{align*}
f_1 &= \frac{HXY-HXY1}{max\{HX,HY\}}\\
f_2 &= \sqrt{1-\exp\{-2(HXY2-HXY)\}} 
\end{align*}

{\scriptsize 
\centerline{\begin{minipage}{.95\textwidth}
C(i, j) is an element of GLC matrix and N is number of gray-levels.
\end{minipage}}
\vspace{-.5mm}
$$\begin{array}{l}

\displaystyle C_x(i) =\sum_{j=1}^N C(i,j), \quad C_y(i)=\sum_{i=1}^N C(i,j)\\
\displaystyle  HXY = -\sum_{i=1}^N\sum_{j=1}^N C(i,j) \log\{C(i,j)\}\\
\displaystyle  HXY1 = -\sum_{i=1}^N\sum_{j=1}^N C(i,j) \log\{C_x(i)\times C_y(j)\}\\
\displaystyle  HXY2 = -\sum_{i=1}^N\sum_{j=1}^N C_x(i)\times C_y(j) \log\{C_x(i)\times C_y(j)\}\\
\end{array}$$
}
\end{posterbox}

 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=phase3,column=2,span=1,row=0]{استخراج ویژگی‌های: دوتایی}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ptext[7]
\centerline{\includegraphics[scale=1.1,height=7cm]{fig4}}
\end{posterbox}

 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=phase4,column=2,span=1,below=phase3]{جداسازی}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ptext[6]
\end{posterbox}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=results,column=1,span=2,below=phase2]{نتایج}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{multicols}{2}
    \centerline{\includegraphics[scale=.7]{fig6}}
    \ptext[2-3]

    \centerline{\includegraphics[scale=.7]{fig5}}
\end{multicols}
\end{posterbox}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=imagedataset,column=0,span=1,below=introduction]{پایگاه داده تصاویر}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}
    \item ۱۱۰ تصویر سالم
    \item ۶۶ تصویر ناسالم
    \item ۶۰ درصد تصاویر برای آموزش به کار برده شده‌اند و مابقی برای تست درستی الگوریتم.
    \item وبسایت \url{http://www.med.harvard.edu/AANLIB/home.html}
\end{itemize}
\end{posterbox}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=phase1,column=0,span=1,below=imagedataset]{فاز یک{:} پیش‌پردازش}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ptext[12]
\begin{enumerate}
    \item پشت زمینه
    \item زنگ روشن
    \item بخش‌های نامرتبط
\end{enumerate}
\ptext[14]

برای هر $\lambda \geq 0$ ورودی نیمه‌مثبت $x\in R^m$ صحیح به‌دست می‌آید البته اگر برای $\lambda X$، $\lambda Y$ ($\lambda >0$) آنگاه ($\lambda y$ و $\lambda x$)

\ptext[16-17]
\end{posterbox}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=adhoc,column=0,span=1,below=phase1]{همینطوری}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\textxecolor{red}
{برای پر کردن فضا استفاده شده است. برای پر کردن فضا استفاده شده است. برای پر کردن فضا استفاده شده است. 
برای پر کردن فضا استفاده شده است. برای پر کردن فضا استفاده شده است. برای پر کردن فضا استفاده شده است. 
سلام}
\end{posterbox}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=references,column=1,span=2,below=results]{منابع}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     \smaller
%     \bibliographystyle{ieee}
     \renewcommand{\section}[2]{\vskip 0.05em}
       \begin{thebibliography}{1}\itemsep=-0.01em
       \setlength{\baselineskip}{0.4em}
       \bibitem{}
       محمود سیستانی, سیدجواد علوی, رضا حسینی
    , ''بررسی پوستر در فضای فارسی``
    , کنفرانس سالانه کامپیوتر, صفحات 868--871, بهار ۱۳۹۲.
       \end{thebibliography}
\end{posterbox}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=ack,column=0,span=2,below=references]{قدردانی}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
با تشکر از دکتر \lr{Brian Amberg}؛ این کار فارسی‌سازی پوستری است که توسط ایشان طراحی شده است\footnote{\url{http://www.brian-amberg.de/uni/poster/}}.
\end{posterbox}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{posterbox}[name=ack,column=2,span=1,below=references]{خالی}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی 
فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی فضای خالی 
\end{posterbox}%%
\end{poster}

\end{document}

Answer 1

更新

從3.1.3版本開始，tikz現在支援CMYK底紋，因此不再需要加載pgf-cmykshadings. （不過該錯誤尚未修復。）

---

pgfpages套件（由 載入[xe]baposter）、pgfsys-dvipdfmx驅動程式（由xelatex）和陰影之間存在衝突。我不知道到底發生了什麼，但最終結果是陰影不適用於xelatex.我已在以下位置提交了錯誤報告：https://github.com/pgf-tikz/pgf/issues/520。

不管怎樣，如果我們指定需要pgfsys-dvipdfm驅動程序，它確實可以工作，儘管這可能會產生其他副作用。

另外，在海報設定中，您可以headershade=plain完全停用標題中的陰影。所以你想刪除這個選項。

正如評論中提到的，如果您要在其中使用陰影，(xe)baposter建議使用該pgf-cmykshadings軟體包，這樣您就不會出現意外的顏色不匹配。在您的特定範例中，這不會發生，但總是有潛力。這是因為所有純色將以 CMYK 輸出，但所有漸層將以 RGB 輸出。無論您如何在文件中定義顏色，都會發生這種情況。如果您在漸層中使用的顏色在其他地方也用作純色，那麼它們看起來會有所不同。有鑑於此，我lightblue在 CMYK 中重新定義了顏色，因此它在螢幕上看起來與 RGB 定義大致相同。

所有這些事情都可以透過將其放在您的之前來完成\documentclass：

\def\pgfsysdriver{pgfsys-dvipdfm.def}
\RequirePackage[cmyk]{xcolor}
\RequirePackage{pgf-cmykshadings}

順便說一句，如果您可以使範例更加簡單，那麼將來會更容易。它可以幫助我們更快地縮小問題範圍。

微量元素

\def\pgfsysdriver{pgfsys-dvipdfm.def}
\RequirePackage[cmyk]{xcolor}
\RequirePackage{pgf-cmykshadings}
\documentclass[a0paper,portrait,persian]{xebaposter}

\usepackage{ptext}
\usepackage{xepersian}
\settextfont{Yas}

\definecolor{reddishyellow}{cmyk}{0,0.22,1.0,0.0}
\definecolor{lightblue}{cmyk}{0.68,0.25,0.0,0.0}
%\definecolor{lightblue}{rgb}{0.145,0.6666,1}

\begin{document}
\begin{poster}{
    borderColor=reddishyellow,
    headerColorOne=black,
    headerColorTwo=lightblue,
    headerborder=closed,
    headershape=roundedleft,
    headerfont=\Large,
    background=none
  }{}{}{}

  \begin{posterbox}{جداسازی}
    \ptext[6]
  \end{posterbox}

\end{poster}

\end{document}