src/libs/icon/transformer/Transformer.h

   1 /*
   2  * Copyright 2006-2007, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8 #ifndef TRANSFORMER_H
   9 #define TRANSFORMER_H
  10
  11
  12 #ifdef ICON_O_MATIC
  13 #       include "IconObject.h"
  14 #else
  15 #       include <Message.h>
  16 #       include <SupportDefs.h>
  17 #endif
  18
  19 #include "IconBuild.h"
  20
  21
  22 _BEGIN_ICON_NAMESPACE
  23
  24
  25 class VertexSource {
  26  public:
  27                                                                 VertexSource();
  28         virtual                                         ~VertexSource();
  29
  30     virtual     void                            rewind(unsigned path_id) = 0;
  31     virtual     unsigned                        vertex(double* x, double* y) = 0;
  32
  33         virtual bool                            WantsOpenPaths() const = 0;
  34         virtual double                          ApproximationScale() const = 0;
  35 };
  36
  37
  38 #ifdef ICON_O_MATIC
  39 class Transformer : public VertexSource,
  40                                         public IconObject {
  41 #else
  42 class Transformer : public VertexSource {
  43 #endif
  44  public:
  45                                                                 Transformer(VertexSource& source,
  46                                                                                         const char* name);
  47                                                                 Transformer(VertexSource& source,
  48                                                                                         BMessage* archive);
  49
  50         virtual                                         ~Transformer();
  51
  52         // Transformer
  53         virtual Transformer*            Clone(VertexSource& source) const = 0;
  54
  55         virtual void                            rewind(unsigned path_id);
  56     virtual     unsigned                        vertex(double* x, double* y);
  57
  58         virtual void                            SetSource(VertexSource& source);
  59
  60         virtual bool                            WantsOpenPaths() const;
  61         virtual double                          ApproximationScale() const;
  62
  63  protected:
  64                         VertexSource&           fSource;
  65 };
  66
  67
  68 _END_ICON_NAMESPACE
  69
  70
  71 #endif  // TRANSFORMER_H