align caption of figure in list of figure

Question

I have a figure in LaTeX with a caption that doesn't fit into one line, e.g.

\begin{figure}
 \includegraphics{}
\caption{This is a very long caption that does not fit into one line}
\end{figure}

The resulting PDF looks as follows in list of figure:

Figure 1: This is a very long caption that does not fit
into one line

I would like the second line of the caption be either aligned with the start of the caption (not the text "Figure 1") to make it look like

Figure 1: This is a very long caption that does not fit
          into one line

How can I do this?

Answer 1

You need to use adequate caption settings. For example:

    \documentclass{book}
\usepackage{graphicx}% <-- for more options, read caption manual
\usepackage[hang]{caption}% <-- for more options, read caption manual

\setlength\textwidth{77mm}

%\usepackage[active,floats,tightpage]{preview}% just for see figure
%\setlength\PreviewBorder{1em}

\listoffigures

\begin{document}
\begin{figure}
    \includegraphics[width=\hsize]{example-image}
\caption{This is a very long caption that does not fit into one line}
\end{figure}
\end{document}

Edit (1): I added a figure below. For It generation I added graphicx package and use preview package for better seeing the picture.

Is this what you looking for?

Edit (2): Now I see, that you like format list of figures. In document class book this is default features (but without of names Figure before figure numbers). And, as told in comment, provide MWE, which show your problem.

Answer 2

You can achieve this e.g. with titletoc:

\documentclass[a4paper,10pt]{article}
\usepackage{titletoc,geometry}
\geometry{textwidth=10cm,showframe}

\contentsmargin{0.5cm}
\titlecontents{figure}
  [1.7cm]
  {}
  {\makebox[0pt][r]{%
      \makebox[1.7cm][l]{Figure~\thecontentslabel:}%
    }%
  }
  {\hspace{-1.7cm}}
  {\titlerule*[6pt]{.}\contentspage}

\begin{document}

\listoffigures

\begin{figure}
 \centering\rule{4cm}{1.5cm}
 \caption{This is a very long caption that does not fit into one line}
\end{figure}

\begin{figure}
 \centering\rule{4cm}{1.5cm}
 \caption{This is the next very long caption that does not fit into
   one line}
\end{figure}

\end{document}