Use input figs (#123)

* Make figs includable in main document

Remove the capability to build them as standalone document but we can
include them in the main document.  It should simplify things down the
road.

* Replace tikx pics

* Remove figures compilation from makefile

No need to compile figs to pdf anymore, at least to build the books

* Delete svg figures from ebook build

* Create png for TikZ figures

    - Add export_figures back
    - Build a pdf from the the TikZ in standalone mode
    - Change the cleanup to deal with those changes
    - Remove trailing spaces..

* Replace centering by an environment

More LaTeX idomatic

* Increase clean_figures robustness

as we use temporary tex files (.tex.in) we can't run clean_figures twice in a
row

* Center TikZ figures

Because it looks better

* Remove png building

Seems to struggle on CI with \\\b or something, we don't absolutely need
it right now so let's get rid of it.

* Remove trgt_figures dependency for pdf and ebooks

This should not be needed now that we include the TikZ directly, only
needed for png generation.

* Revert "Remove png building"

This reverts commit fdd542de57.

This is now fine to add the code back, so that it can be debugged when
times come.

book/figures/fig-baking-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (heat_oven) {\footnotesize Heat oven to 230°C (446°F) for 30 minutes};
   \node [block, right of=heat_oven, node distance=3cm] (score_dough) {\footnotesize Score your dough};
@@ -24,4 +21,3 @@
   \path [line] (remove_steam) -- (build_crust);
   \path [line] (build_crust) -- (finish_baking);
 \end{tikzpicture}
-\end{document}

book/figures/fig-bulk-fermentation.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Bulk fermentation};
   \node [block, right of=init] (check_dough) {\footnotesize Check the dough};
@@ -27,4 +24,3 @@
   \path [line] (stretch_fold) -- (wait_60_minutes);
   \path [line] (wait_60_minutes) -- (check_dough);
 \end{tikzpicture}
-\end{document}

book/figures/fig-dividing-preshaping.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Dividing required?};
   \node [decision, right of=init, node distance=5cm] (more_than_one_loaf) {\footnotesize More than 1 loaf?};
@@ -10,4 +7,3 @@
   \path [line] (more_than_one_loaf) -- (yes);
   \path [line] (more_than_one_loaf) -- (no);
 \end{tikzpicture}
-\end{document}

book/figures/fig-inverted-tray-method.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Place water tray and stone in oven};
   \node [block, right of=init] (heat_oven) {\footnotesize Heat oven to 230°C (446°F) for 30 minutes};
@@ -22,4 +19,3 @@
   \path [line] (bake) -- (remove_steam);
   \path [line] (remove_steam) -- (finish);
 \end{tikzpicture}
-\end{document}

book/figures/fig-kneading-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Homogenize recipe ingredients};
   \node [block, right of=init, node distance=3cm] (wait1) {\footnotesize Wait 15 minutes};
@@ -30,4 +27,3 @@
   \node [block, below of=dough_ball, node distance=3cm] (begin_bulk) {\footnotesize Begin bulk fermentation};
   \path [line] (dough_ball) -- (begin_bulk);
 \end{tikzpicture}
-\end{document}

book/figures/fig-liquid-starter-conversion.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Make a regular or stiff starter};
   \node [block, right of=init] (feed_new_ratio) {\footnotesize Mix 1g existing starter, 5g flour and 25g water};
@@ -20,4 +17,3 @@
   \path [line] (ready_signs) -- node{\footnotesize yes} (last_feed);
   \path [line] (last_feed) -- node{\footnotesize after 6--12 hours} (bread_dough);
 \end{tikzpicture}
-\end{document}

book/figures/fig-non-wheat-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Mix ingredients};
   \node [block, below of=init, node distance=3cm] (bulk_ferment) {\footnotesize Bulk ferment};
@@ -14,4 +11,3 @@
   \path [line] (shape) -- (proof);
   \path [line] (proof) -- (bake);
 \end{tikzpicture}
-\end{document}

book/figures/fig-process-flat-bread.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto, every node/.style={inner sep=10, outer sep=0}]
 \node [block] (init) {Mix ingredients};
   \node [block, right of=init, node distance=5cm] (wait) {Wait for dough to be ready};
@@ -8,4 +5,3 @@
   \path [line] (init) -- (wait);
   \path [line] (wait) -- (bake_bread);
 \end{tikzpicture}
-\end{document}

book/figures/fig-proofing-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [decision] (init) {\footnotesize Room temperature proofing?};
   \node [decision, right of=init, node distance=9cm] (retard_bake_decision) {\footnotesize Bake in less than 10 hours from now?};
@@ -23,4 +20,3 @@
   \path [line] (move_to_fridge) -- (retard);
   \path [line] (retard) -- (bake);
 \end{tikzpicture}
-\end{document}

book/figures/fig-shaping-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Begin shaping};
   \node [decision, right of=init, node distance=5cm] (overfermented_decision) {\footnotesize Dough overly sticky or dough tears?};
@@ -18,4 +15,3 @@
   \path [line] (banneton) -- (proof);
   \path [line] (overfermented) -- (loafpan);
 \end{tikzpicture}
-\end{document}

book/figures/fig-starter-maintenance.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Make your bread dough};
   \node [decision, below of=init, node distance=3.5cm] (all_starter_used) {\footnotesize All starter used?};
@@ -33,4 +30,3 @@
   \path [line] (dry_starter) -- (reactivate_freezer);
   \path [line] (freeze_starter) -- (reactivate_freezer);
 \end{tikzpicture}
-\end{document}

book/figures/fig-starter-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Mix 50g flour + 50g water, stir}; 
   \node [block, right of=init, node distance=3cm] (wait1) {\footnotesize Wait 24 hours};
@@ -21,4 +18,3 @@
   \path [line] (wait2) -- (feed);
   \path [line] (decide) -- node{yes} (use);
 \end{tikzpicture}
-\end{document}

book/figures/fig-starter-readiness.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Make a starter};
   \node [block, right of=init, node distance=3cm] (feed) {\footnotesize Feed your starter};
@@ -20,4 +17,3 @@
   \path [line] (check_smell) -- node{yes} (make_dough);
   \path [line] (check_smell) -- node{no} (wait_12);
 \end{tikzpicture}
-\end{document}

book/figures/fig-stiff-starter-conversion.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Make a regular or liquid starter};
   \node [block, right of=init] (feed_new_ratio) {\footnotesize Mix 10g existing starter, 50g flour and 25g water};
@@ -26,4 +23,3 @@
   \path [line] (too_dry) -- node{\footnotesize yes} (add_water);
   \path [line] (ready_signs) -- node{\footnotesize yes} (last_feed);
 \end{tikzpicture}
-\end{document}

book/figures/fig-wheat-sourdough-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [block] (init) {\footnotesize Ready starter};
   \node [block, right of=init, node distance=3cm] (mix_ingredients) {\footnotesize Mix ingredients};
@@ -23,4 +20,3 @@
   \path [line] (shape) -- (proof);
   \path [line] (proof) -- (bake);
 \end{tikzpicture}
-\end{document}

book/figures/fig-wheat-sourdough-starter-process.tex

@@ -1,6 +1,3 @@
-\input{./vars}
-
-\begin{document}
 \begin{tikzpicture}[node distance = 3cm, auto]
   \node [decision] (init) {\footnotesize Starter last fed within 3 days?};
   \node [block, right of=init, node distance=4cm] (feed_no_branch)
@@ -31,4 +28,3 @@
   \path [line] (smell_check) -- node{no} (feed_yes_branch);
   \path [line] (smell_check) -- node{yes} (make_dough);
 \end{tikzpicture}
-\end{document}