///////////////////////////////////////////////////////////////////////////////
//                             Lisaac Library                                //
//                                                                           //
//                   LSIIT - ULP - CNRS - INRIA - FRANCE                     //
//                                                                           //
//   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 3 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, see <http://www.gnu.org/licenses/>.   //
//                                                                           //
//                     http://isaacproject.u-strasbg.fr/                     //
///////////////////////////////////////////////////////////////////////////////
Section Header

  + name    := AI_LAYER;


  - copyright   := "2003-2005 Jérome Boutet, 2003-2007 Benoit Sonntag";
  
  - comment := "Layer of a AI document.";

  - version := 1;    
  
Section Inherit  
  
  - parent_object:OBJECT := OBJECT;
  
Section Public
  
  + color:AI_COLOR;
  
  + operation:LINKED_LIST[AI_OPERATION];
  
  + is_fill:BOOLEAN;
  
  + is_stroke:BOOLEAN;
      
  //
  // Creation.
  //
  
  - create lst_op:LINKED_LIST[AI_OPERATION] color col:AI_COLOR fill f:BOOLEAN stroke s:BOOLEAN :SELF <-
  ( + result:SELF;
    result := clone;
    result.make lst_op color col fill f stroke s;
    result
  );
  
  - make lst_op:LINKED_LIST[AI_OPERATION] color col:AI_COLOR fill f:BOOLEAN stroke s:BOOLEAN <-
  (
    color     := col;
    operation := lst_op;
    is_stroke := s;
    is_fill   := f;
  );
  
  //
  // Draw
  //
  
  - draw b:BITMAP scale s:REAL_16_16 <-
  (
    ? { color != NULL};
    ? { operation !=  NULL};
    
    /*
    (operation.lower).to (operation.upper) do { i:INTEGER;
      operation.item i.display; 
    };
    */

    is_fill.if {      
      b.color (color.rgbcolor_fill);
      (operation.lower).to (operation.upper) do { i:INTEGER;
	operation.item i.draw_fill b scale s;
      };
      b.poly_trace;
    };
    is_stroke.if {
      b.color (color.rgbcolor_stroke);
      (operation.lower).to (operation.upper) do { i:INTEGER;
	operation.item i.draw_stroke b scale s;
      };
    };
  );
  

