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diff --git a/Master/texmf-dist/tex/latex/witharrows/witharrows.sty b/Master/texmf-dist/tex/latex/witharrows/witharrows.sty new file mode 100644 index 00000000000..c3bd9a31d67 --- /dev/null +++ b/Master/texmf-dist/tex/latex/witharrows/witharrows.sty @@ -0,0 +1,505 @@ +% This work may be distributed and modified under the +% conditions of the LaTeX Project Public License, either version 1.3 +% of this license or (at your option) any later version. +% The latest version of this license is in +% http://mirrors.ctan.org/help/Catalogue/licenses.lppl.html +% and version 1.3 or later is part of all distributions of LaTeX +% version 2005/12/01 or later. + + +% The author of this work is F. Pantigny (fpantigny at wanadoo point fr) + +\NeedsTeXFormat{LaTeX2e}[1994/06/01] + + +\RequirePackage{l3keys2e} + +\ProvidesExplPackage + {WithArrows} + {2017/08/09} + {1.0} + {Draws arrows for explanations on the right side of a alignment.} + + +\RequirePackage{expl3} +\RequirePackage{xparse} + +\RequirePackage{tikz} +\usetikzlibrary{calc} +\usetikzlibrary{arrows.meta} +\usetikzlibrary{bending} + + + +\RequirePackage{footnote} + + + +% There is a style for the tips of arrow because someone will use this style +% if he wants draw an arrow directly with a Tikz command in his document (probably using the Tikz nodes created by +% {WithArrows} in the \halign. +\tikzset{TipsOfWithArrows/.style= { > = {Straight~Barb[scale=1.2,bend]}} } + + +% The following variables are for the options ; these options can be set at 3 levels : see the groups of keys defined in +% the \keys_define:nn comand below. + +% if the beginning of the arrow use a "r" option (if not, it's a "l" option) +\bool_new:N \l_wa_initial_r_bool +\bool_set_true:N \l_wa_initial_r_bool + +% if the end of the arrow use a "r" option (if not, it's à "l" option) +\bool_new:N \l_wa_final_r_bool +\bool_set_true:N \l_wa_final_r_bool + +% if the arrow use a "i" option (in this case the options "l" and "r" for the ends are meaningless) +\bool_new:N \l_wa_i_bool +\bool_set_false:N \l_wa_i_bool + +% to translate the whole arrow to the right +\dim_new:N \l_wa_xoffset_dim +\dim_set:Nn \l_wa_xoffset_dim {3mm} + +% to indicate if the nodes will be drawn (in red) ; useful only for debugging +\bool_new:N \l_wa_shownodes_bool +\bool_set_false:N \l_wa_shownodes_bool + +% to indiate if the elements of the \halign will be composed with \displaystyle +\bool_new:N \l_wa_displaystyle_bool +\bool_set_false:N \l_wa_displaystyle_bool + +% will contains the Tikz options used to draw the arrow +\tl_clear_new:N \l_wa_options_tikz_tl +% At each possible level for the options ("global", "env" or "local : see below), the new values will be appended +% on the right of the token list \l_wa_options_tikz_tl + +% will be raised when a key controling position of the arrow has been set in the same list of key +% useful in order to raise an error if 2 incompatibles keys are specified at the same level +\bool_new:N \l_wa_position_key_already_set_bool +\bool_set_false:N \l_wa_position_key_already_set_bool + +% This Tikz style is for the nodes created automatically in the \halign. +\tikzstyle{wa_node_style}=[rectangle, + inner~sep = 0 pt, + minimum~height = 3 pt, + minimum~width = 0pt, + red, % red... but will be drawn only if shownodes=true + \bool_if:NT \l_wa_shownodes_bool {draw}] + + + +% There are 3 levels where keys can be set : +% with \WithArrowsOptions{...} : this level will be called "global" level ; +% with \begin{WithArrows}[...] : this level will be called "env" level ; +% with \Arrow[...] : this level will be called "local" level. + +% That's why there is 3 groups of keys named "global", "env" and "local". + +% Before each \keys_set_groups:nnn, we execute a \keys_set_filter:nnn with group "secondary" +% Thus, an unknown key will raise an error. Furthermore, the "primary" keys (those which are not in the +% group "secondary") will be set first : it's useful to raise an error if, for example, keys "i" and "group" +% are set at the same level (which is incoherent). + +% There is also the group named "jump" (with only one key : "jump") for technical reasons. +\keys_define:nn {WithArrows} + { % the key named "jump" will be extracted in the \Arrow command + jump .groups:n = {jump,secondary}, + jump .code:n = {\int_set:Nn \l_jump_int {#1} + \int_compare:nNnF \l_jump_int > 0 + {\msg_error:nn {WithArrows} {The~option~"jump"~must~be~non~negative}}}, + jump .value_required:n = true, + % + % 0 = t = \vtop , 1 = c = \vcenter, 2 = b = \vbox + pos .groups:n = {global,env,secondary}, + pos .int_set:N = \l_wa_pos_int, + pos .initial:n = 0, + pos .value_required:n = true, + % + t .groups:n = {global,env,kown}, + t .meta:n = {pos=0}, + c .groups:n = {global,env,kown}, + c .meta:n = {pos=1}, + b .groups:n = {global,env,kown}, + b .meta:n = {pos=2}, + % + % if the user wants to give a new name to the \Arrow command (and the name \Arrow remains free) + CommandName .groups:n = {global,env,secondary}, + CommandName .tl_set:N = \l_wa_CommandName_tl, + CommandName .initial:n = {Arrow}, + CommandName .value_required:n = true, + % + displaystyle .groups:n = {global,env,secondary}, + displaystyle .bool_set:N = \l_wa_displaystyle_bool, + displaystyle .value_forbidden:n = true, + % + % + shownodes .groups:n = {global,env,secondary}, + shownodes .bool_set:N = \l_wa_shownodes_bool, + shownodes .default:n = true, + shownodes .value_forbidden:n = true, + % + jot .groups:n = {env,secondary}, % don't put "global" + jot .dim_set:N = \jot, % \jot is a LaTeX parameter for the distance between 2 lines in displaymath + jot .value_required:n = true, + % + xoffset .groups:n = {global,env,local,secondary}, + xoffset .dim_set:N = \l_wa_xoffset_dim, + xoffset .value_required:n = true, + % + tikz .groups:n = {global,env,local,secondary}, + tikz .code:n = {\tl_put_right:Nn \l_wa_options_tikz_tl {,#1}}, + tikz .value_required:n = true, + % + ll .groups:n = {global,env,local,secondary}, + ll .value_forbidden:n = true, + ll .default:n = true, + ll .code:n = {\bool_if:NT \l_wa_position_key_already_set_bool + {\msg_error:nn {WithArrows} {Two~options~are~incompatible}} + \bool_if:NT \l_wa_group_bool + {\msg_error:nn {WithArrows} {Option~incompatible~with~group}} + \bool_set_true:N \l_wa_position_key_already_set_bool + \bool_set_false:N \l_wa_initial_r_bool + \bool_set_false:N \l_wa_final_r_bool + \bool_set_false:N \l_wa_i_bool }, + % + lr .groups:n = {global,env,local,secondary}, + lr .value_forbidden:n = true, + lr .default:n = true, + lr .code:n = {\bool_if:NT \l_wa_position_key_already_set_bool + {\msg_error:nn {WithArrows} {Two~options~are~incompatible}} + \bool_if:NT \l_wa_group_bool + {\msg_error:nn {WithArrows} {Option~incompatible~with~group}} + \bool_set_true:N \l_wa_position_key_already_set_bool + \bool_set_false:N \l_wa_initial_r_bool + \bool_set_true:N \l_wa_final_r_bool + \bool_set_false:N \l_wa_i_bool}, + % + rl .groups:n = {global,env,local,secondary}, + rl .value_forbidden:n = true, + rl .default:n = true, + rl .code:n = {\bool_if:NT \l_wa_position_key_already_set_bool + {\msg_error:nn {WithArrows} {Two~options~are~incompatible}} + \bool_if:NT \l_wa_group_bool + {\msg_error:nn {WithArrows} {Option~incompatible~with~group}} + \bool_set_true:N \l_wa_position_key_already_set_bool + \bool_set_true:N \l_wa_initial_r_bool + \bool_set_false:N \l_wa_final_r_bool + \bool_set_false:N \l_wa_i_bool}, + % + rr .groups:n = {global,env,local,secondary}, + rr .value_forbidden:n = true, + rr .default:n = true, + rr .code:n = {\bool_if:NT \l_wa_position_key_already_set_bool + {\msg_error:nn {WithArrows} {Two~options~are~incompatible}} + \bool_if:NT \l_wa_group_bool + {\msg_error:nn {WithArrows} {Option~incompatible~with~group}} + \bool_set_true:N \l_wa_position_key_already_set_bool + \bool_set_true:N \l_wa_initial_r_bool + \bool_set_true:N \l_wa_final_r_bool + \bool_set_false:N \l_wa_i_bool}, + % + i .groups:n = {global,env,local,secondary}, + i .code:n = {\bool_if:NT \l_wa_position_key_already_set_bool + {\msg_error:nn {WithArrows} {Two~options~are~incompatible}} + \bool_if:NT \l_wa_group_bool + {\msg_error:nn {WithArrows} {Option~incompatible~with~group}} + \bool_set_true:N \l_wa_position_key_already_set_bool + \bool_set_true:N \l_wa_i_bool}, + i .value_forbidden:n = true, + i .default:n = true, + % + % indicate if all the arrows of an environment are grouped + % volontary not in "secondary" group : thus, if will be set first during the \keys_set_filter:nnn + group .groups:n = {global,env}, + group .bool_set:N = \l_wa_group_bool, + group .value_forbidden:n = true +} + + + + + +\ProcessKeysOptions {WithArrows} + + +% \WithArrowsOptions is the command of the WithArrows package to fix options at the document level +\NewDocumentCommand \WithArrowsOptions {m} + {\bool_set_false:N \l_wa_position_key_already_set_bool + \keys_set_filter:nnn {WithArrows} {secondary} {#1} % in order to raise an error if a key is unknown + \keys_set_groups:nnn {WithArrows} {global} {#1}} + + + +\NewDocumentEnvironment {WithArrows} {O{}} + {\reverse_if:N \if_mode_math: + \msg_error:nn {WithArrows} {WithArrows~used~outside~math~mode} + \fi + \savenotes % to extract the footnotes of the environment {WithArrows} + \m@th + \def\\{\cr} + % + \int_gzero_new:N \g_wa_line_int % to count the lines in the \halign + % + % to count the arrows created in the environment + \int_gzero_new:N \g_wa_arrow_int + % + % these 3 counters will be used later as variables + \int_zero_new:N \l_initial_int + \int_zero_new:N \l_final_int + \int_zero_new:N \l_arrow_int + % + \bool_set_false:N \l_wa_position_key_already_set_bool + \keys_set_filter:nnn {WithArrows} {secondary} {#1} % in order to raise an error if a key is unknown + \keys_set_groups:nnn {WithArrows} {env} {#1} + % + \cs_set:cpn \l_wa_CommandName_tl {\wa_Arrow} % new name for \Arrow command in {WithArrows} environments + % + \int_case:nnF \l_wa_pos_int % is fixed via the options t, c or b + {0 {\vtop} + 1 {\vcenter} + 2 {\vbox}} + {\msg_error:nn {WithArrows} {Bad~value~for~option~pos}} + \bgroup + \openup\jot + \ialign\bgroup + \int_gincr:N \g_wa_line_int % will be used for the names of the 2 nodes of the line + \strut\hfil + $\bool_if:NT \l_wa_displaystyle_bool \displaystyle {##}$ + & + $\bool_if:NT \l_wa_displaystyle_bool \displaystyle {{}##}$ + % + % we create a first node (the "left node" of the line) + \tikz[remember~picture] + \node [wa_node_style] (wa-\int_use:N\g_wa_line_int-l) {} ; + \hfil + % we create a second node (the "right node" of the line) + \tikz[remember~picture] + \node [wa_node_style] (wa-\int_use:N\g_wa_line_int-r) {} ; + \cr + } + {\crcr % + \egroup% end of halign + \egroup% end of vtop (or \vcenter or \vbox) + % + \int_compare:nNnT \g_wa_arrow_int > 0 % If there is really arrows... + \wa_draw_arrows: % ...we draw these arrows. + \spewnotes + } + + + +% le following code is necessary because we whill have to expand un argument exactly 3 times +\cs_generate_variant:Nn \keys_set_groups:nnn {nno} +\cs_new:Nn \keys_set_groups_WithArrows_local: {\keys_set_groups:nno {WithArrows} {local}} + +\cs_generate_variant:Nn \keys_set_filter:nnn {nno} +\cs_new:Nn \keys_set_filter_WithArrows_secondary: {\keys_set_filter:nno {WithArrows} {secondary}} + +\cs_new:Nn \wa_draw_arrows: + {% + % if the option "group" is used in the current environment + \bool_if:NT \l_wa_group_bool + \wa_x_computation_for_option_group: % will compute \g_wa_x_dim which is the abscissa of all the arrows + % + % loop over the arrows created in the environment : the arrows will be drawn + \int_set:Nn \l_arrow_int 1 + \int_until_do:nNnn \l_arrow_int > \g_wa_arrow_int % g_wa_arrow_int is the total number of arrows + { + % \l_initial_int is the line number from which the arrow starts + \int_set:Nn \l_initial_int {\int_use:c {wa_initial\int_use:N\l_arrow_int}} + % + % \l_final_int is the line number to which the arrow ends + \int_set:Nn \l_final_int {\int_use:c {wa_final\int_use:N\l_arrow_int}} + % + \int_compare:nNnT \l_final_int > \g_wa_line_int + {\msg_error:nn {WithArrows} {Too~few~lines~for~an~arrow}} + % + \group_begin: % for the options given in \Arrow[...] ("local level" of the options) + \keys_define:nn {WithArrows} {group .undefine:} + \bool_set_false:N \l_wa_position_key_already_set_bool + % the third argument de \keys_set_groups:nnn must be expanded exactly three times + % a x-expansion is not possible because there can be tokens like \bfseries in the option "font" + \exp_args:NNo \exp_args:No \keys_set_filter_WithArrows_secondary: {\use:c {wa_options\int_use:N\l_arrow_int}} + \exp_args:NNo \exp_args:No \keys_set_groups_WithArrows_local: {\use:c {wa_options\int_use:N\l_arrow_int}} + % + % In case of option "i", we have to compute the abscissa of the arrow (which is vertical). + \bool_if:NT \l_wa_i_bool + \wa_x_computation_for_option_i: % the abscissa is computed in \g_wa_x_dim + % + % \l_initial_tl contains the name of the Tikz node from which the arrow starts (in normal cases... + % because with option "group" or option "i", the point will perhaps have an other x-value --- but always the + % same y-value). + \tl_set:Nx \l_initial_tl {wa-\int_use:N\l_initial_int-\bool_if:NTF\l_wa_initial_r_bool rl} + % + % \l_final_tl contains the name of the Tikz node to which the arrow ends (in normal cases : with option + % "group" or option "i", the point will perhaps have an other x-value but always the same y-value) + \tl_set:Nx \l_final_tl {wa-\int_use:N\l_final_int-\bool_if:NTF\l_wa_final_r_bool rl . north} + % ". north" because we want a small gap between two consecutive arrows + % + \begin{tikzpicture}[remember~picture, + overlay, + align=left, + auto=left, + font = {\small\itshape}, + TipsOfWithArrows, + ->, + looseness=1, + bend~left=45] + \draw \exp_after:wN [\l_wa_options_tikz_tl] + % \p1 and \p2 are the two ends of the arrow (in fact, not exactly in case of options "group" or "i") + let \p1 = (\tl_use:N \l_initial_tl), + \p2 = (\tl_use:N \l_final_tl) in + (\bool_if:nTF {\l_wa_group_bool || \l_wa_i_bool} + {\dim_use:N \g_wa_x_dim + \dim_use:N \l_wa_xoffset_dim, \y1} + {\x1 + \dim_use:N \l_wa_xoffset_dim, \y1} ) + to node (wa-a-\int_use:N\l_arrow_int) % in fact, this name will not be used by WithArrows + {\tl_use:c {wa_label\int_use:N\l_arrow_int}} + (\bool_if:nTF {\l_wa_group_bool || \l_wa_i_bool} + {\dim_use:N \g_wa_x_dim + \dim_use:N \l_wa_xoffset_dim, \y2} + {\x2 + \dim_use:N \l_wa_xoffset_dim, \y2} ) ; + \end{tikzpicture} + \group_end: % for the options given to \Arrow[...] ("local level" of the options) + \int_incr:N \l_arrow_int + } % end of the loop over the arrows : all arrows are drawn + } + + +% We want to compute the x-value for the current environment which has option "group" (and therefore all arrows are +% vertical at the same abscissa). This value will be computed in \g_wa_x_dim (which is global for technical reasons : +% we have to do assignments in a \tikz command). +\cs_new:Nn \wa_x_computation_for_option_group: + {\dim_gzero_new:N \g_wa_x_dim + % + % first, we calculate the initial value for \g_wa_x_dim + % in this \tikz command, nothing is drawn : we only want to read the abscissa of a Tikz node + \tikz[remember~picture] + \path let \p1 = (wa-\int_use:c{wa_initial1}-l) % "let" is given by the Tikz library "calc" + in \pgfextra {\dim_gset:Nn \g_wa_x_dim {\x1}} ; % a global assignment is necessary because of \tikz + % + % Then, we loop to determine the maximal length of all the lines concerned by the arrows of the environment. + \int_set:Nn \l_arrow_int 1 + \int_until_do:nNnn \l_arrow_int > \g_wa_arrow_int % g_wa_arrow_int is the total number of arrows + { % \l_initial_int is the line number from which the arrow starts + \int_set:Nn \l_initial_int {\int_use:c {wa_initial\int_use:N\l_arrow_int}} + % + % \l_final_int is the line number to which the arrow ends + \int_set:Nn \l_final_int {\int_use:c {wa_final\int_use:N\l_arrow_int}} + % + \wa_x_computation_analyze_lines_between: %... between lines \l_initial_int and \l_final_int + % + \int_incr:N \l_arrow_int + } % end of the loop over the arrows of the environment + } + + +% We want to compute the x-value for the current arrow which has option "i" (and therefore is vertical). +% This value will be computed in \g_wa_x_dim (which is global for technical reasons : we have to do assignments in +% a \tikz command). +\cs_new:Nn \wa_x_computation_for_option_i: + {\dim_gzero_new:N \g_wa_x_dim + % First, we calculate the initial value for \g_wa_x_dim. + % In the next \tikz command, nothing is drawn : we only want to read a abscissa of a Tikz node. + \tikz[remember~picture] + \path let \p1 = (wa-\int_use:N\l_initial_int-l) % "let" is given by the Tikz library "calc" + in \pgfextra {\dim_gset:Nn \g_wa_x_dim {\x1}} ; % a global assignment is necessary because of \tikz + % + \wa_x_computation_analyze_lines_between: %... between lines \l_initial_int and \l_final_int + } + + + + +% We analyse lines between \l_initial_int and \l_final_int in order to modify \g_wa_x_dim in consequence. +% More precisely, we will increase \g_wa_x_dim if we find a line longer than the current value of \g_wa_x_dim. +\cs_new:Nn \wa_x_computation_analyze_lines_between: + {\int_compare:nNnT \l_final_int > \g_wa_line_int + {\msg_error:nn {WithArrows} {Too~few~lines~for~an~arrow}} + % + % \l_tmpa_int will be the index of the loop + \int_set:Nn \l_tmpa_int \l_initial_int + \int_until_do:nNnn \l_tmpa_int > \l_final_int + {% in the next \tikz command, nothing is drawn : we only want to read the abscissa of a Tikz node + \tikz[remember~picture] + \path let \p1 = (wa-\int_use:N\l_tmpa_int-l) + in \pgfextra {\dim_gset:Nn \g_wa_x_dim {\dim_max:nn \g_wa_x_dim {\x1}}} ; % \gset because of \tikz + \int_incr:N \l_tmpa_int + } % loop on the lines between \l_initial_int et \l_final_int + } + + + +\cs_generate_variant:Nn \int_compare:nNnT {cNnT} + +\cs_generate_variant:Nn \tl_if_eq:nnF {onF} + + +% The next command has a strange name, but, in fact, usually, we will have \let\Arrow\wa_Arrow ; +% The user can use the CommandName option if he wants an other name for the command called \Arrow by default. +% It's useful if the user already has a command named "\Arrow" he still wants to use. +\NewDocumentCommand \wa_Arrow {O{} m O{}} + {\tl_if_eq:onF {\@currenvir} {WithArrows} + {\msg_fatal:nn {WithArrows} {Arrow~used~outside~{WithArrows}~environment}} + % + % \g_wa_arrow_int counts the arrows in the environment + \int_gincr:N \g_wa_arrow_int + % + % we decide to extract immediatly the key "jump" in ordre to compute the end line ; + \int_zero_new:N \l_jump_int + \int_set:Nn \l_jump_int 1 + \keys_set_groups:nnn {WithArrows} {jump} {#1,#3} % "jump" is the only key of the group "jump" + % + % to stock the informations of the considered arrow (in four variables) ; + % these informations will be used when the arrow will be really drawn + \int_gzero_new:c {wa_initial\int_use:N\g_wa_arrow_int} + \int_gset_eq:cN {wa_initial\int_use:N\g_wa_arrow_int} \g_wa_line_int + % + \int_gzero_new:c {wa_final\int_use:N\g_wa_arrow_int} + \int_gset:cn {wa_final\int_use:N\g_wa_arrow_int} {\g_wa_line_int + \l_jump_int} + % + \tl_gclear_new:c {wa_options\int_use:N\g_wa_arrow_int} + \tl_gset:cn {wa_options\int_use:N\g_wa_arrow_int} {#1,#3} + % + \tl_gclear_new:c {wa_label\int_use:N\g_wa_arrow_int} + \tl_gset:cn {wa_label\int_use:N\g_wa_arrow_int} {#2} + % + } + + + +\msg_new:nnn {WithArrows} + {Arrow~used~outside~{WithArrows}~environment} + {Arrow~command~should~be~used~only~directly~in~\{WithArrows\}~environment\\ + and~not~in~a~subenvironment.} + +\msg_new:nnn {WithArrows} + {The~option~"jump"~must~be~non~negative} + {You~can't~use~a~stricly~negative~value~for~the~option~"jump"~of~command~Arrow\\ + You~can~create~an~arrow~going~backwards~with~the~option~"<-"~of~Tikz.} + +\msg_new:nnn {WithArrows} + {Too~few~lines~for~an~arrow} + {There~is~at~least~an~arrow~that~can't~be~drawn~because~it~arrives~after~the\\ + last~line~of~the~environment.} + +\msg_new:nnn {WithArrows} + {Bad~value~for~option~pos} + {The~option~"pos"~of~the~environment~\{WithArrows\}~must~be~equal~to\\ + 0,~1,~or~2.} + +\msg_new:nnn {WithArrows} + {WithArrows~used~outside~math~mode} + {The~environment~WithArrows~must~be~used~only~in~math~mode.} + +\msg_new:nnn {WithArrows} + {Option~incompatible~with~group} + {You~try~to~use~the~option~"\tl_use:N\l_keys_key_tl"~while~you~are~using~the~option~"group".\\ + It's~incompatible.~You~can~go~on~ignoring~this~option~"\tl_use:N\l_keys_key_tl"~and~"group"~will~be~used.} + + +\msg_new:nnn {WithArrows} + {Two~options~are~incompatible} + {You~try~to~use~the~option~"\tl_use:N\l_keys_key_tl"~but~this~option~is~incompatible\\ + with~an~option~previously~set.~If~you~go~on,~it~will~overwrite~the~previous~option.} + + +\endinput
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