In the book class there's an internal macro \@chapter that's adding the space by this line:
\addtocontents{lof}{\protect\addvspace{10\p@}}%
You could redefine this macro. Alternatively, you could disable \addvspace in the list of figures, for instance by
\newcommand*{\noaddvspace}{\renewcommand*{\addvspace}[1]{}}
\addtocontents{lof}{\protect\noaddvspace}
The effect should end with the list of figures, but of course you could group it to limit the scope.
If you disabled it you could use an environment or a declaration of the setspace package, to get more space between the lines of the list of figures. Or you just use \linespread locally:
\addtocontents{lof}{\linespread{2}\selectfont}
In order to use section numbers instead of page numbers it is necessary to redefine the way, the index entry is written to \jobname.idx. That is basically easy, if the package imakeidx is used.
In its manual, imakeidx the author writes, that \imki@wrindexentry should be redefined to apply for other styles. Looking into the package, there is a similar command used with \thepage as argument, so redefined it, using \thesection.
However, makeindex as external processor complains about the new format if \thesection writes its numbers as 1.1 etc., i.e. with dots. Using xindy solves this problem, by applying a new alphabet or location-class, this is done in sectionindex_xindy.xdy, as well as removing the , separator and inserting ----- instead.
Content of sectionindex_xindy.xdy
(markup-locclass-list :open " ----- " :sep "")
( define-location-class "numericsections"
("arabic-numbers" :sep "." "arabic-numbers"))
( define-location-class "numericchapteralphasections"
("arabic-numbers" :sep "." "ALPHA"))
\documentclass[paper=a4,12pt]{scrbook}
\usepackage{letltxmacro}
\usepackage[xindy]{imakeidx}
%\usepackage{hyperref}% Leads to linking to wrong positions%
\makeatletter
% Global redefinition of indexentry to section instead of page%
\renewcommand{\imki@wrindexentrysplit}[3]{%
\expandafter\protected@write\csname#1@idxfile\endcsname{}%
{\string\indexentry{#2}{\thesection}}%
}%
\LetLtxMacro{\LaTeXStandardFigure}{\figure}
\let\LaTeXStandardEndFigure\endfigure%
\renewenvironment{figure}[1][tpb]{%
%redefine the index write command to use figure number instead of section number
\renewcommand{\imki@wrindexentrysplit}[3]{%
\expandafter\protected@write\csname##1@idxfile\endcsname{}%
{\string\indexentry{##2}{\thefigure}}
}%
\LaTeXStandardFigure[#1]%
}{%
\LaTeXStandardEndFigure%
}%
\LetLtxMacro{\LaTeXStandardTable}{\table}
\let\LaTeXStandardEndTable\endtable%
\renewenvironment{table}[1][tpb]{%
%redefine the index write command to use table number instead of section number
\renewcommand{\imki@wrindexentrysplit}[3]{%
\expandafter\protected@write\csname##1@idxfile\endcsname{}%
{\string\indexentry{##2}{\thetable}}
}%
\LaTeXStandardTable[#1]%
}{%
\LaTeXStandardEndTable%
}%
\makeatother
\makeindex[options=-M sectionindex_xindy.xdy]
\renewcommand{\thefigure}{\arabic{chapter}.\arabic{figure}}%
\renewcommand{\thesection}{\arabic{chapter}.\Alph{section}}%
\renewcommand{\thetable}{\arabic{chapter}.\arabic{table}}%
\begin{document}
\listoffigures
\listoftables
\chapter{First}
\begin{figure}
\caption{A first figure with index entry, say Figure\index{Figure!First}}
\end{figure}
\section{First section of chapter~\arabic{chapter}}
Here is a table (well, the environment actually)
\begin{table}
\centering
\begin{tabular}{lll}
\hline
A & dummy & table \tabularnewline
\hline
\end{tabular}
\caption{A table with some index entry in it: \index{Table}{First}}
\end{table}
See also the keyword Index\index{Index}
\chapter{Two}
\section{First}
Index\index{Index} and its usage\index{usage}
\begin{figure}
\caption{A dummy figure with an index entry, say DummyFigure\index{Figure!DummyFigure}}
\end{figure}
\printindex
\end{document}
In order to make this work for figures/tables, I just redefined the command again within wrappers for figure and table environment. You have redefine \thefigure and \thetable explicitly, since it seems, that they introduce a trailing \relax command just before the figure/table number.
Please note, that this does not work correctly with hyperlinks so far,regarding the figure/table index entries.
Enabling --shell-escape is mandatory.
Best Answer
You can redefine
\@idxitemto have a vertical space preceding it, while\indexspacedoes nothing. Also\subitemneeds to be redefined, otherwise it would add the vertical space as well.For separating the first entry from the heading, a
\vspace{12pt}instruction is added to\theindex, modify it to suit.The
araradirectives are what I used to ease compilation; the\loopjust fills in some more index entries so we arrive at the second column.If I change the code above into
then the space between different letters will be double of the space between entries starting with the same letter.