Vertically align individual cells in a table

Question

I am wanting the ability to vertically align any cell within a table. This appears possible but only on a per column or row basis. At the moment I can horizontally align the contents of individual cells with the help of the \raggedleft and \centering commands. However, \multicolumn applies vertical alignment for the whole row and the longtabu environment can only specify the alignment type per column.

The following is an example of the table I want to create where both horizontal and vertical alignments need to be set for each cell instead of per row or column:

\documentclass[11pt,a4paper]{article}
\usepackage{longtable}      
\usepackage{tabu}
\usepackage{lipsum}
\usepackage{multirow}

\newcolumntype{M}{m{\dimexpr 1\tabucolX+1\tabcolsep+\arrayrulewidth\relax}}
\newcolumntype{P}{p{\dimexpr 1\tabucolX+1\tabcolsep+\arrayrulewidth\relax}}
\newcolumntype{B}{b{\dimexpr 1\tabucolX+1\tabcolsep+\arrayrulewidth\relax}}

\newcolumntype{H}{>{\begin{minipage}[b]{\hsize}}B<{\end{minipage}}}

\begin{document}

\begin{longtabu} to 150mm [l] {|X[l]|X[l]|X[l]|}
\hline 
\multicolumn{1}{|P|}{ \lipsum[1]} & \multicolumn{1}{H|}{\centering H: Center, V:Center} & \multicolumn{1}{B|}{\raggedleft \multirow{1}{*}[-2\baselineskip]{H:Right, V:Bottom}} \tabularnewline
\hline
\multicolumn{1}{|P|}{\lipsum[1]} & \multicolumn{1}{P|}{H: Left, V:Top} & \multicolumn{1}{M|}{\centering H:Center, V:Center} \tabularnewline
\hline
\multicolumn{1}{|P|}{\lipsum[1]} & \multicolumn{1}{M|}{\raggedleft H: Right, V:Center} & \multicolumn{1}{B|}{H:Left, V:Bottom} \tabularnewline
\hline 
\tabuphantomline 
\end{longtabu}

\end{document}

Update:

Attempting the solutions presented in "Move tabular entry to bottom of row" won't work.

The first solution I believe simply adjusts the entire column by creating a new column type:

\newcolumntype{B}{>{\begin{minipage}[b]{\hsize}}X<{\end{minipage}}}

This doesn't help my problem where I need the vertical alignment applied to individual cells, not a whole column. Applying this column type to \multicolumn doesn't appear to work.

The second solution places a \baselineskip into the optional parameter of \multirow which works initially but seems to become vertically centred as soon as the cell becomes a certain height.

I have updated my example above to show how it breaks.

Thanks

Answer 1

David Carlisle's answer doesn't appear to be working for me.

hmph:-)

Works for me:

\documentclass[11pt,a4paper]{article}
\usepackage{longtable}  
\usepackage{array}    

\usepackage{lipsum}

\makeatletter


\newcolumntype{P}{p{.3\textwidth}}


\newcommand\m[1]{\multicolumn{1}{#1}}

\newcommand\zc[2]{%
\setbox0\hbox{\parbox[c]{.3\textwidth}{#2}}%
\smash{\raisebox{\dimexpr(\csname PDFSAVEe#1\endcsname sp-
                         \csname PDFSAVEb#1\endcsname sp)/2\relax}{\box0}}}
\newcommand\zb[2]{%
\setbox0\hbox{\parbox[t]{.3\textwidth}{#2}}%
\smash{\raisebox{\dimexpr\csname PDFSAVEe#1\endcsname sp-
                         \csname PDFSAVEb#1\endcsname sp\relax}{\box0}}}

\def\foo#1{\leavevmode
\expandafter\ifx\csname PDFSAVE#1\endcsname\relax
\expandafter\gdef\csname PDFSAVE#1\endcsname{0}%
\fi
\pdfsavepos\write\@auxout{\gdef\string\PDFSAVE#1{\the\pdflastypos}}}
\makeatother

\begin{document}

\begin{longtable}{|P|P|P|}
\hline 
\foo{ba}\lipsum*[1]\foo{ea} &
\zc{a}{\centering H: Center, V:Center} &
\zb{a}{\raggedleft H:Right, V:Bottom} \tabularnewline
\hline
\foo{bb}\lipsum*[1]\foo{eb} & 
{H: Left, V:Top} &
\zc{b}{\centering H:Center, V:Center} \tabularnewline
\hline
\foo{bc}\lipsum*[1]\foo{ec} &
\zc{c}{\raggedleft H: Right, V:Center} & 
\zb{c}{H:Left, V:Bottom} \tabularnewline
\hline 
\end{longtable}

\end{document}