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@@ -60,11 +60,11 @@ Figure~\ref{fig:originalpapergraph} compares our results to those of Brandes and
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\section{User interface}\label{sec:userInterface}
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-Currently the only way to interact with the application is by keyboard events.
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-It is planned to add additional commands, see chapter~\ref{ch:progress}.
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-The possible inputs are listed in table~\ref{table:keys}.
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+Currently the two main ways to interact with the application are keyboard events and graphical button-clicking.
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+The possible keyboard inputs are listed in table~\ref{table:keys}.
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+These can also be used by clicking on one of the buttons displayed in figure~\ref{fig:sketch}.
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-\begin{table}[htp]
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+%\begin{table}[htp]
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\begin{longtable}{|l|p{10cm}|}
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\hline
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Key & Action \\\hline\hline
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@@ -74,14 +74,29 @@ The possible inputs are listed in table~\ref{table:keys}.
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Alt + Down arrow key & Perform one \enquote{step over} in forwards direction. \\\hline
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Alt + Page down & Perform one \enquote{step out} in forwards direction. \\\hline
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Alt + Page up & Perform one \enquote{step out} in backwards direction. \\\hline
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- Alt + P & Activate forwards automatic execution. \\\hline
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- Alt + R & Activate backwards automatic execution. \\\hline
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+ Alt + P & Activate automatic forwards execution. \\\hline
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+ Alt + R & Activate automatic backwards execution. \\\hline
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Alt + Pause & Pause automatic execution. \\\hline
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Alt + G & Generate a random graph (opens a dialog window). \\\hline
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Alt + S & Save the current graph to a file (opens a dialog window). \\\hline
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Alt + L & Load a graph from a file (opens a dialog window). \\\hline
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Alt + D & Show a debug table (in a new window). \\\hline
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+ \caption[Overview of the available keyboard commands]{Overview of the available keyboard commands. For the planned commands, see~\ref{ch:progress}.}
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+ \label{table:keys}
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\end{longtable}
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- \caption[Overview of the available keyboard commands]{Overview of the available keyboard commands. For the planned commands, see~\ref{ch:progress}.}
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- \label{table:keys}
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-\end{table}
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+%\end{table}
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+
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+One interaction that is available neither on keyboard nor on a button is setting breakpoints.
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+For this, the user performs a triple click on one of the lines in the pseudocode.
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+Upon reaching the beginning of that stage (beginning in running direction) the automatic execution pauses.
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+Imagine the following scenario:
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+\begin{enumerate}
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+ \item The user starts up \appname.
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+ \item The user sets a breakpoint on \enquote{Extremal Layout: leftmost lower} (this is the third extremal layout in the order they are computed).
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+ \item The user activates automatic forwards execution.
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+ \item The algorithm pauses when reaching the first step of \enquote{Extremal Layout: leftmost lower}.
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+ \item The user activates automatic forwards execution again.
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+ \item After the stage of \enquote{Extremal Layout: leftmost lower} is roughly halfway finished, the user pauses the automatic execution and activates automatic \emph{backwards} execution.
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+ \item The algorithm would stop at the last step of \enquote{Extremal Layout: leftmost lower} (which is the first step in backwards direction), but this is obviously not reached from the middle of that stage.
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+ So the algorithm just runs backwards to the beginning of whole BK Node Placement Algorithm (first step of the preprocessing).
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+\end{enumerate}
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