سلام
کافی بود تا علاوه بر فرمایش جناب قربانزاده، عناوین زیر را در \rl قرار میدادیم.
\rl{ \chaptertitlename \thechapter}
کد زیر این کار را انجام میدهد:
\documentclass{book}
\usepackage[explicit]{titlesec}
\usepackage{fourier}
\usepackage{tikz}
\usepackage{epigraph}
\usepgflibrary{qrr.shapes.openrectangle}
\usepackage{xepersian}
\settextfont{Yas}
\definecolor{mybluei}{RGB}{0,173,239}
\definecolor{myblueii}{RGB}{63,200,244}
\definecolor{myblueiii}{RGB}{199,234,253}
\tikzset{
mynode/.style={
rounded corners=30pt,
shape=open rectangle,
open rectangle fill=myblueii,
open rectangle sides=#1,
}
}
\titleformat{\chapter}[display]
{\normalfont\huge\sffamily}
{}
{20pt}
{%
\begin{tikzpicture}[remember picture,overlay]
\node[
anchor=west,
rectangle,
minimum height=4cm,
text width=\paperwidth,
xshift=-\the\dimexpr\oddsidemargin+1in\relax,
outer sep=0pt,
fill=myblueiii] (titlerect) {};
\node[
anchor=south west,
xshift=2cm,
text width=\textwidth]
at ([yshift=5pt]titlerect.south west) {\fontsize{30}{36}\selectfont#1};
\node[
mynode=nw,
anchor=south east,
fill=myblueii,
inner xsep=1.5cm,
outer sep=0pt,
font=\color{white},
minimum height=30pt]
at (current page.east|-titlerect.north)
{\bfseries\ \rl{ \chaptertitlename \thechapter}};
\end{tikzpicture}%
}
\titleformat{name=\chapter,numberless}[display]
{\normalfont\huge\sffamily}
{}
{20pt}
{%
\begin{tikzpicture}[remember picture,overlay]
\node[
anchor=west,
rectangle,
minimum height=4cm,
text width=\paperwidth,
xshift=-\the\dimexpr\oddsidemargin+1in\relax,
outer sep=0pt,
fill=myblueiii] (titlerect) {};
\node[
anchor=south west,
xshift=2cm,
text width=\textwidth]
at (titlerect.south west) {\Huge#1};
\end{tikzpicture}%
}
\titlespacing*{\chapter}
{0pt}{-20pt}{60pt}
\setlength\beforeepigraphskip{1.5\baselineskip}
\setlength\afterepigraphskip{2\baselineskip}
\setlength\epigraphwidth{6.8cm}
\setlength\epigraphrule{0pt}
\renewcommand\epigraphsize{\large}
\renewcommand\textflush{flushleft}
\let\oldepigraph\epigraph \renewcommand\epigraph[2]{%
\oldepigraph{\color{mybluei}\itshape #1}{#2}}
\begin{document}
\chapter{\rl{عنوان فصل اول}}
\epigraph{In theory there is no difference \\ between theory and practice. \\ In practice there is.}{Lawrence ``Yogui'' Berra,1925 \\ New York Yankees baseball player}
\chapter*{\rl{یک عنوان نمونه برای عنوان فصل}}
\end{document}
