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% MetaUML, a MetaPost library for typesetting exquisite UML diagrams.
% 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 _metauml_state_mp:
expandafter endinput
fi;
_metauml_state_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 metauml_defaults;
inputonce util_log;
vardef StateInfo@#=
attributes(@#);
var(color) foreColor, borderColor;
var(numeric) round;
FontInfo.@#iFont(metauml_defaultFont, defaultscale);
@#iFont.ignoreNegativeBase := 1;
PictureInfo.@#iText (2, 2, 2, 2)(@#iFont);
PictureStackInfo.@#iStack (2, 2, 2, 2)(9)(@#iText);
@#iStack.iPict.ignoreNegativeBase := 1;
Margins.@#(2,2,0,6);
GroupInfo.@#iGroupSubstates(2, 2, 4, 2);
@#round := 5;
@#drawNameLine := 0;
ShadeInfo.@#iShade;
@#foreColor := .9white;
@#borderColor := black;
enddef;
vardef StateInfoCopy@#(text src)=
log "StateInfoCopy: Copying state info";
attributes(@#);
var(color) foreColor, borderColor;
var(numeric) round;
PictureStackInfoCopy.@#iStack (src.iStack);
MarginsCopy.@#(src);
@#round := src.round;
@#drawNameLine := src.drawNameLine;
GroupInfoCopy.@#iGroupSubstates(src.iGroupSubstates);
ShadeInfoCopy.@#iShade(src.iShade);
@#foreColor := src.foreColor;
@#borderColor := src.borderColor;
enddef;
StateInfo.iState;
vardef State@#(text contents)(text _substates)=
EState.@#(iState)(contents)(_substates);
enddef;
vardef EState@#(text _info)(text contents)(text _substates)=
ObjectEquations(@#);
@#className := "State";
StateInfoCopy.@#info(_info);
numeric @#nLines; @#nLines := 0;
string @#lines[];
numeric @#nInternalTransitions; @#nInternalTransitions := 0;
string @#internalTransitions[];
for l=contents:
@#lines[@#nLines] := l;
@#nLines := @#nLines + 1;
endfor;
EGroup.@#substates(@#info.iGroupSubstates)(_substates);
%@#substates.info.boxed := 1;
EPictureStack.@#stack(@#info.iStack)(scantokens listArray(@#lines)(@#nLines))("vcenterbase");
enddef;
vardef stateTransitions@#(text transitions)=
State_internalTransitions@#(transitions);
enddef;
vardef State_internalTransitions@#(text transitions)=
for transition=transitions:
@#internalTransitions[@#nInternalTransitions] := transition;
@#nInternalTransitions := @#nInternalTransitions + 1;
endfor;
enddef;
vardef State_layout@#=
if @#layedout = 1:
log "State '" & (str @#) & "' has already been layed out";
else:
@#layedout := 1;
log "State layout: '" & (str @#) & "'";
EPictureStack.@#internalTransitionsStack(@#info.iStack)
(scantokens listArray(@#internalTransitions)(@#nInternalTransitions))("vleftbase");
log "State name layout '" & (str @#) & "'...";
PictureStack_layout.@#stack;
log "Internal transitions layout '" & (str @#) & "'...";
PictureStack_layout.@#internalTransitionsStack;
log "Substates layout '" & (str @#) & "'...";
Group_layout.@#substates;
log "All elements in state '" & (str @#) & "' successfully layed out, integrating...";
% @#internalTransitionsStack.info.boxed := 1;
@#contentWidth = lmax(@#stack.width, @#internalTransitionsStack.width, @#substates.width);
@#width = @#contentWidth + @#info.left + @#info.right + 2 * @#info.round;
@#height = @#stack.height + @#info.top + @#info.bottom +
@#internalTransitionsStack.height + @#substates.height;
@#stack.n = @#n + (0, -@#info.top);
@#substates.n = @#stack.s;
@#internalTransitionsStack.sw = @#sw + (@#info.round, @#info.round);
attributes(@#);
var(pair) urt, lrt, ulft, llft;
var(pair) urta, lrta, ulfta, llfta;
var(pair) urtb, lrtb, ulftb, llftb;
@#urta := @#ne - (@#info.round, 0);
@#urtb := @#ne - (0, @#info.round);
@#lrta := @#se + (0, @#info.round);
@#lrtb := @#se - (@#info.round, 0);
@#ulfta := @#nw - (0, @#info.round);
@#ulftb := @#nw + (@#info.round, 0);
@#llfta := @#sw + (@#info.round, 0);
@#llftb := @#sw + (0, @#info.round);
@#urt := @#ne - (@#info.round, @#info.round) + @#info.round * (sind(45),cosd(45));
@#lrt := @#se + (-@#info.round, @#info.round) + @#info.round * (sind(135),cosd(135));
@#llft := @#sw + (@#info.round, @#info.round) + @#info.round * (sind(225),cosd(225));
@#ulft := @#nw + (@#info.round, -@#info.round) + @#info.round * (sind(315),cosd(315));
var(pair) nameLineLeft, nameLineRight;
ypart @#nameLineLeft = ypart @#nameLineRight = @#stack.bottom;
xpart @#nameLineLeft = xpart @#nw;
xpart @#nameLineRight = xpart @#ne;
log "State layout for " & (str @#) & " ended.";
fi;
enddef;
vardef State_draw@#=
State_layout.@#;
objectEnsurePositioning.@#;
attributes(@#);
var(path) border;
@#border := @#urta .. @#urt .. @#urtb -- %
@#lrta .. @#lrt .. @#lrtb -- %
@#llfta .. @#llft .. @#llftb -- %
@#ulfta .. @#ulft .. @#ulftb -- cycle;
%fill @#border shifted (@#info.shade, -@#info.shade) withcolor .7white;
drawObjectShade(@#);
fill @#border withcolor @#info.foreColor;
draw @#border withcolor @#info.borderColor;
drawObject(@#internalTransitionsStack);
drawObject(@#stack);
drawObject(@#substates);
if @#info.drawNameLine = 1:
draw @#nameLineLeft -- @#nameLineRight;
fi;
enddef;
vardef State_border@#=
@#border
enddef;
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