libcore/MorphShape.h

   1 // MorphShape.h: the MorphShape DisplayObject implementation for Gnash.
   2 //
   3 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   4 //   Free Software Foundation, Inc
   5 //
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19
  20 #ifndef GNASH_MORPH_SHAPE_H
  21 #define GNASH_MORPH_SHAPE_H
  22
  23 #include "DisplayObject.h"
  24 #include "swf/DefineMorphShapeTag.h"
  25 #include <boost/intrusive_ptr.hpp>
  26 #include <cassert>
  27
  28 namespace gnash {
  29     class Renderer;
  30 }
  31
  32 namespace gnash {
  33
  34 /// A DisplayObject that tweens between two shapes.
  35 //
  36 /// A MorphShape has no properties of its own, but its inherited properties
  37 /// may be read in AS3 using a reference to the object created with
  38 /// getChildAt().
  39 //
  40 /// Morphing is controlled using a SWF::PlaceObject2 tag with a ratio flag.
  41 /// The most common and efficient way is to combine this with a move flag,
  42 /// so that this object is moved to the position specified by the ratio.
  43 /// However, it is also possible to remove and replace, in which case a
  44 /// new MorphShape is created.
  45 //
  46 /// The starting position is not necessarily identical with shape1, though in
  47 /// practice it often is.
  48 class MorphShape : public DisplayObject
  49 {
  50
  51 public:
  52
  53     MorphShape(movie_root& mr, as_object* object,
  54             const SWF::DefineMorphShapeTag* def, DisplayObject* parent);
  55
  56     virtual void display(Renderer& renderer, const Transform& xform);
  57
  58     virtual SWFRect getBounds() const;
  59
  60     virtual bool pointInShape(std::int32_t  x, std::int32_t  y) const;
  61
  62     const SWF::ShapeRecord& shape() const {
  63         return _shape;
  64     }
  65
  66 private:
  67
  68     void morph();
  69
  70     double currentRatio() const;
  71
  72     const boost::intrusive_ptr<const SWF::DefineMorphShapeTag> _def;
  73
  74     SWF::ShapeRecord _shape;
  75
  76 };
  77
  78
  79 } // namespace gnash
  80
  81
  82 #endif
  83
  84
  85 // Local Variables:
  86 // mode: C++
  87 // indent-tabs-mode: t
  88 // End: