1 files changed, 203 insertions, 0 deletions
diff --git a/Master/texmf-dist/metapost/metauml/metauml_state.mp b/Master/texmf-dist/metapost/metauml/metauml_state.mp
new file mode 100644
index 00000000000..7d4b348afad
--- /dev/null
+++ b/Master/texmf-dist/metapost/metauml/metauml_state.mp
@@ -0,0 +1,203 @@
+% 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;
+
+input metauml_defaults;
+input 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;
+