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% MetaUtil, an easier MetaPost life
% Copyright (C) 2005 Ovidiu Gheorghies
%
% This program is free software; you can redistribute it and/or
% modify it under the terms of the GNU General Public License
% as published by the Free Software Foundation; either version 2
% of the License, or (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
if known _util_shade_mp:
expandafter endinput
fi;
_util_shade_mp:=1;
% Sadly, this copy of the macro is needed to prevent multiple file loads being shown by MetaPost.
% The guard values (such as _metauml_mp) do ensure that the file isn't loaded multiple times,
% but this macro makes sure that MetaPost won't try to load the file and display a message for that.
def inputonce text libraryFile=
if not known scantokens ("_" & str libraryFile & "_mp"):
%includeonce% show "Loading " & str libraryFile;
scantokens ("input " & str libraryFile);
else:
%includeonce% show str libraryFile & " already loaded.";
fi;
enddef;
inputonce util_log;
vardef ShadeInfo@#=
_n_ := str @#;
generic_declare(numeric) _n.shift;
generic_declare(color) _n.background;
@#shift := 1;
@#background := .7white;
enddef;
vardef ShadeInfoCopy@#(text src)=
ShadeInfo.@#;
ShadeInfo_copy@#(src);
enddef;
vardef ShadeInfo_copy@#(text src)=
@#shift := src.shift;
@#background := src.background;
enddef;
vardef ShadeInfo_toString@#=
save @#ret;
string @#ret;
@#ret := "Shade (shift: " & (decimal @#shift) & " back: (" &
(decimal redpart @#background) & ", " &
(decimal greenpart @#background) & ", " &
(decimal bluepart @#background) & ")";
@#ret
enddef;
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