%% %% This is file `l3color.sty', %% generated with the docstrip utility. %% %% The original source files were: %% %% l3color.dtx (with options: `package') %% %% Copyright (C) 2017-2019 The LaTeX3 Project %% %% It may be distributed and/or modified under the conditions of %% the LaTeX Project Public License (LPPL), either version 1.3c of %% this license or (at your option) any later version. The latest %% version of this license is in the file: %% %% http://www.latex-project.org/lppl.txt %% %% This file is part of the "l3experimental bundle" (The Work in LPPL) %% and all files in that bundle must be distributed together. %% %% File: l3color.dtx \RequirePackage{expl3} \ProvidesExplPackage{l3color}{2019-03-05}{} {L3 Experimental color support} \tl_new:N \l__color_tmp_tl \prg_new_conditional:Npnn \__color_if_defined:n #1 { T, F, TF } { \tl_if_exist:cTF { l__color_named_ #1 _tl } \prg_return_true: \prg_return_false: } \cs_new_protected:Npn \__color_extract:nNN #1#2#3 { \exp_after:wN \exp_after:wN \exp_after:wN \__color_extract:NNw \exp_after:wN \exp_after:wN \exp_after:wN #2 \exp_after:wN \exp_after:wN \exp_after:wN #3 \cs:w l__color_named_ #1 _tl \cs_end: \q_stop } \cs_generate_variant:Nn \__color_extract:nNN { V } \cs_new_protected:Npn \__color_extract:NNw #1#2 #3 ~ #4 \q_stop { \tl_set:Nn #1 {#3} \tl_set:Nn #2 {#4} } \cs_new_protected:Npn \__color_convert:nnN #1#2#3 { \__color_convert:nnVN {#1} {#2} #3 #3 } \cs_generate_variant:Nn \__color_convert:nnN { VV } \cs_new_protected:Npn \__color_convert:nnnN #1#2#3#4 { \str_if_eq:nnT {#1} { spot } % TO DO!!! { } \tl_set:Nx #4 { \use:c { __color_convert_ #1 _ #2 :w } #3 ~ 0 ~ 0 ~ 0 \q_stop } } \cs_generate_variant:Nn \__color_convert:nnnN { nnV } \cs_new:Npn \__color_convert_gray_rgb:w #1 ~ #2 \q_stop { #1 ~ #1 ~ #1 } \cs_new:Npn \__color_convert_gray_cmyk:w #1 ~ #2 \q_stop { 0 ~ 0 ~ 0 ~ \fp_eval:n { 1 - #1 } } \cs_new:Npn \__color_convert_rgb_gray:w #1 ~ #2 ~ #3 ~ #4 \q_stop { \fp_eval:n { 0.3 * #1 + 0.59 * #2 + 0.11 * #3 } } \cs_new:Npn \__color_convert_rgb_cmyk:w #1 ~ #2 ~ #3 ~ #4 \q_stop { \exp_args:Nf \__color_convert_rgb_cmyk:nnnn { \fp_eval:n { min ( 1 - #1 , 1 - #2 , 1 - #3 ) } } {#1} {#2} {#3} } \cs_new:Npn \__color_convert_rgb_cmyk:nnnn #1#2#3#4 { \fp_eval:n { min ( 1 , max ( 0 , 1 - #2 - #1 ) ) } \c_space_tl \fp_eval:n { min ( 1 , max ( 0 , 1 - #3 - #1 ) ) } \c_space_tl \fp_eval:n { min ( 1 , max ( 0 , 1 - #4 - #1 ) ) } \c_space_tl #1 } \cs_new:Npn \__color_convert_cmyk_gray:w #1 ~ #2 ~ #3 ~ #4 ~ #5 \q_stop { \fp_eval:n { 1 - min ( 1 , 0.3 * #1 + 0.59 * #2 + 0.11 * #3 + #4 ) } } \cs_new:Npn \__color_convert_cmyk_rgb:w #1 ~ #2 ~ #3 ~ #4 ~ #5 \q_stop { \fp_eval:n { 1 - min ( 1 , #1 + #4 ) } \c_space_tl \fp_eval:n { 1 - min ( 1 , #2 + #4 ) } \c_space_tl \fp_eval:n { 1 - min ( 1 , #3 + #4 ) } } \tl_new:N \l__color_model_tl \tl_new:N \l__color_value_tl \tl_new:N \l__color_next_model_tl \tl_new:N \l__color_next_value_tl \cs_new_protected:Npn \color_parse:nN #1#2 { \driver_color_pickup:N \l__color_current_tl \tl_set_eq:cN { l__color_named_ . _tl } \l__color_current_tl \group_begin: \seq_map_inline:Nn \l_char_active_seq { \tl_set:Nx \l__color_tmp_tl { \cs_to_str:N ##1 } \char_set_active_eq:NN ##1 \l__color_tmp_tl } \tl_set:Nx \l__color_tmp_tl {#1} \exp_args:NNV \group_end: \__color_parse:nN \l__color_tmp_tl #2 } \cs_new_protected:Npn \__color_parse:nN #1#2 { \tl_if_exist:cTF { l__color_named_ #1 _tl } { \tl_set_eq:Nc #2 { l__color_named_ #1 _tl } } { \__color_parse:Nw #2#1 ! \q_stop } \__color_check_model:N #2 } \cs_new_protected:Npn \__color_parse:Nw #1#2 ! #3 \q_stop { \__color_if_defined:nTF {#2} { \tl_if_blank:nTF {#3} { \tl_set_eq:Nc #1 { l__color_named_ #2 _tl } } { \__color_parse_loop_init:Nnn #1 {#2} {#3} } } { \__kernel_msg_error:nnn { color } { unknown-color } {#3} \tl_set_eq:NN \l__color_current_tl \l__color_named_black_tl } } \cs_new_protected:Npn \__color_parse_loop_init:Nnn #1#2#3 { \group_begin: \__color_extract:nNN {#2} \l__color_model_tl \l__color_value_tl \__color_parse_loop:w #3 ! ! ! ! \q_stop \tl_set:Nx \l__color_tmp_tl { \l__color_model_tl \c_space_tl \l__color_value_tl } \exp_args:NNNV \group_end: \tl_set:Nn #1 \l__color_tmp_tl } \cs_new_protected:Npn \__color_parse_loop:w #1 ! #2 ! #3 ! #4 ! #5 \q_stop { \bool_lazy_or:nnF { \tl_if_blank_p:n {#1} } { \int_compare_p:nNn {#1} = { 100 } } { \int_compare:nNnTF {#1} = { 0 } { \tl_if_blank:nTF {#2} { \__color_extract:nNN { white } } { \__color_extract:nNN {#2} } \l__color_model_tl \l__color_value_tl } { \use:x { \__color_parse_loop:nn {#1} { \tl_if_blank:nTF {#2} { white } {#2} } } } } \tl_if_blank:nF {#3} { \__color_parse_loop:w #3 ! #4 ! #5 \q_stop } \__color_parse_end: } \cs_new_protected:Npn \__color_parse_loop:nn #1#2 { \__color_if_defined:nTF {#2} { \__color_extract:nNN {#2} \l__color_next_model_tl \l__color_next_value_tl \tl_if_eq:NNF \l__color_model_tl \l__color_next_model_tl { \str_if_eq:VnT \l__color_model_tl { gray } { \use:x { \tl_set:Nn \exp_not:N \l__color_model_tl { \l__color_next_model_tl } \tl_set:Nn \exp_not:N \l__color_value_tl { \l__color_next_value_tl } \tl_set:Nn \exp_not:N \l_next__color_model_tl { \l__color_model_tl } \tl_set:Nn \exp_not:N \l_next__color_value_tl { \l__color_value_tl } } } \__color_convert:VVN \l__color_next_model_tl \l__color_model_tl \l__color_next_value_tl } \tl_set:Nx \l__color_value_tl { \__color_parse_mix:NVVn \l__color_model_tl \l__color_value_tl \l__color_next_value_tl {#1} } } { \__kernel_msg_error:nnn { color } { unknown-color } {#2} \__color_extract:nNN { black } \l__color_model_tl \l__color_value_tl \__color_parse_break:w } } \cs_new_protected:Npn \__color_parse_break:w #1 \__color_parse_end: { } \cs_new_protected:Npn \__color_parse_end: { } \cs_new:Npn \__color_parse_mix:Nnnn #1#2#3#4 { \exp_args:Nf \__color_parse_mix:nNnn { \fp_eval:n { #4 / 100 } } #1 {#2} {#3} } \cs_generate_variant:Nn \__color_parse_mix:Nnnn { NVV } \cs_new:Npn \__color_parse_mix:nNnn #1#2#3#4 { \use:c { __color_parse_mix_ #2 :nw } {#1} #3 \q_mark #4 \q_stop } \cs_new:Npn \__color_parse_mix_gray:nw #1#2 \q_mark #3 \q_stop { \fp_eval:n { #2 * #1 + #3 * ( 1 - #1 ) } } \cs_new:Npn \__color_parse_mix_rgb:nw #1#2 ~ #3 ~ #4 \q_mark #5 ~ #6 ~ #7 \q_stop { \fp_eval:n { #2 * #1 + #5 * ( 1 - #1 ) } \c_space_tl \fp_eval:n { #3 * #1 + #6 * ( 1 - #1 ) } \c_space_tl \fp_eval:n { #4 * #1 + #7 * ( 1 - #1 ) } } \cs_new:Npn \__color_parse_mix_cmyk:nw #1#2 ~ #3 ~ #4 ~ #5 \q_mark #6 ~ #7 ~ #8 ~ #9 \q_stop { \fp_eval:n { #2 * #1 + #6 * ( 1 - #1 ) } \c_space_tl \fp_eval:n { #3 * #1 + #7 * ( 1 - #1 ) } \c_space_tl \fp_eval:n { #4 * #1 + #8 * ( 1 - #1 ) } \c_space_tl \fp_eval:n { #5 * #1 + #9 * ( 1 - #1 ) } } \cs_new:Npn \__color_parse_gray:w #1 , #2 \q_stop {#1} \cs_new:Npn \__color_parse_rgb:w #1 , #2 , #3 , #4 \q_stop { #1 ~ #2 ~ #3 } \cs_new:Npn \__color_parse_cmyk:w #1 , #2 , #3 , #4 , #5 \q_stop { #1 ~ #2 ~ #3 ~ #4 } \cs_new:Npn \__color_parse_spot:w #1 , #2 \q_stop { \__color_parse_spot_aux:w #1 ! 100 ! \q_stop } \cs_new:Npn \__color_parse_spot_aux:w #1 ! #2 ! #3 \q_stop { #1 ~ \fp_eval:n { #2 / 100 } } \tl_new:N \l_color_fixed_model_tl \cs_new_protected:Npn \__color_check_model:N #1 { \tl_if_empty:NF \l_color_fixed_model_tl { \exp_after:wN \__color_check_model:w #1 \q_stop \tl_if_eq:NNF \l__color_model_tl \l_color_fixed_model_tl { \__color_convert:VVN \l__color_model_tl \l_color_fixed_model_tl \l__color_value_tl } \tl_set:Nx #1 { \l_color_fixed_model_tl \c_space_tl \l__color_value_tl } } } \cs_new_protected:Npn \__color_check_model:w #1 ~ #2 \q_stop { \tl_set:Nn \l__color_model_tl {#1} \tl_set:Nn \l__color_value_tl {#2} } \cs_new_protected:Npn \__color_select: { \tl_set_eq:cN { l__color_named_ . _tl } \l__color_current_tl \__color_select:V \l__color_current_tl } \cs_new_protected:Npn \color_select:n #1 { \color_parse:nN {#1} \l__color_current_tl \__color_select: } \cs_new_protected:Npn \color_select:nn #1#2 { \__color_direct:nnN {#1} {#2} \l__color_current_tl \__color_select: } \cs_new_protected:Npn \__color_direct:nnN #1#2#3 { \cs_if_exist:cTF { __color_parse_ #1 :w } { \tl_set:Nx #3 { #1 ~ \use:c { __color_parse_ #1 :w } #2 , 0 , 0 , 0 , 0 \q_stop } \__color_check_model:N #3 } { \__kernel_msg_error:nnn { color } { invalid-model } {#1} } } \tl_new:N \l__color_named_tl \cs_new_protected:Npn \__color_store:Nn #1#2 { \str_if_eq:nnF {#2} { . } { \tl_clear_new:c { l__color_named_ #2 _tl } \tl_set_eq:cN { l__color_named_ #2 _tl } #1 } } \cs_new_protected:Npn \color_set:nn #1#2 { \color_parse:nN {#2} \l__color_named_tl \__color_store:Nn \l__color_named_tl {#1} } \cs_new_protected:Npn \color_set:nnn #1#2#3 { \__color_direct:nnN {#2} {#3} \l__color_named_tl \__color_store:Nn \l__color_named_tl {#1} } \cs_new_protected:Npn \color_set_eq:nn #1#2 { \__color_if_defined:nTF {#2} { \tl_clear_new:c { l__color_named_ #1 _tl } \str_if_eq:nnTF {#2} { . } { \tl_set_eq:cN { l__color_named_ #1 _tl } \l__color_current_tl } { \tl_set_eq:cc { l__color_named_ #1 _tl } { l__color_named_ #2 _tl } } } { \__kernel_msg_error:nnn { color } { unknown-color } {#2} } } \color_set:nnn { black } { gray } { 0 } \color_set:nnn { white } { gray } { 1 } \color_set:nnn { cyan } { cmyk } { 1 , 0 , 0 , 0 } \color_set:nnn { magenta } { cmyk } { 0 , 1 , 0 , 0 } \color_set:nnn { yellow } { cmyk } { 0 , 0 , 1 , 0 } \color_set:nnn { red } { rgb } { 1 , 0 , 0 } \color_set:nnn { green } { rgb } { 0 , 1 , 0 } \color_set:nnn { blue } { rgb } { 0 , 0 , 1 } \tl_new:c { l__color_named_._tl } \tl_set_eq:cN { l__color_named_._tl } \l__color_current_tl \cs_new_protected:Npn \color_show:n #1 { \msg_show:nnxxxx { LaTeX / color } { show } {#1} { \__color_if_defined:nTF {#1} { \exp_last_unbraced:Nv \__color_show:w { l__color_named_ #1 _tl } \q_stop } { } } { } { } } \cs_new:Npn \__color_show:w #1 ~ #2 \q_stop { \msg_show_item_unbraced:nn { model } {#1} \exp_args:Nnf \msg_show_item_unbraced:nn { value } { \use:c { __color_show_ #1 :w } #2 \q_stop } } \cs_new:Npn \__color_show_gray:w #1 \q_stop { #1 } \cs_new:Npn \__color_show_rgb:w #1 ~ #2 ~ #3 \q_stop { #1 ,~ #2 ,~ #3 } \cs_new:Npn \__color_show_cmyk:w #1 ~ #2 ~ #3 ~ #4 \q_stop { #1 ,~ #2 ,~ #3 ,~ #4 } \__kernel_msg_new:nnnn { color } { invalid-model } { Invalid~color~model~'#1'. } { LaTeX~has~been~asked~to~use~a~color~model~called~'#1',~ but~this~model~is~not~set~up. } \__kernel_msg_new:nnnn { color } { unknown-color } { Unknown~color~'#1'. } { LaTeX~has~been~asked~to~use~a~color~named~'#1',~ but~this~has~never~been~defined. } \__kernel_msg_new:nnn { color } { show } { The~color~#1~ \tl_if_empty:nTF {#2} { is~undefined. } { has~the~properties: #2 } } %% %% %% End of file `l3color.sty'.