MWAWPict.hxx
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2 
3 /* libmwaw
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16 * Major Contributor(s):
17 * Copyright (C) 2002 William Lachance (wrlach@gmail.com)
18 * Copyright (C) 2002,2004 Marc Maurer (uwog@uwog.net)
19 * Copyright (C) 2004-2006 Fridrich Strba (fridrich.strba@bluewin.ch)
20 * Copyright (C) 2006, 2007 Andrew Ziem
21 * Copyright (C) 2011, 2012 Alonso Laurent (alonso@loria.fr)
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26 * For minor contributions see the git repository.
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30 * in which case the provisions of the LGPLv2+ are applicable
31 * instead of those above.
32 */
33 
34 /*
35  * This header contains code specific to manage basic picture (line, rectangle, ...)
36  *
37  * Note: generic class for all sort of pict
38  * - PictBitmap: regroup some classes used to store bitmap
39  * - PictData: regroup the data which can be read via a WPXBinaryData
40  */
41 
42 #ifndef MWAW_PICT
43 # define MWAW_PICT
44 
45 # include <assert.h>
46 # include <ostream>
47 # include <vector>
48 
49 # include "libmwaw_internal.hxx"
50 
52 class MWAWPict
53 {
54 public:
56  virtual ~MWAWPict() {}
57 
66  virtual Type getType() const = 0;
67 
75 
77  Box2f getBdBox() const {
78  Box2f res(m_bdbox);
79  res.extend(m_bdBoxExt);
80  return res;
81  }
82 
84  void setBdBox(Box2f const &box) {
85  m_bdbox = box;
86  }
87 
92  virtual bool getBinary(WPXBinaryData &, std::string &) const {
93  return false;
94  }
95 
99  virtual int cmp(MWAWPict const &a) const {
100  // first compare the bdbox
101  int diff = m_bdbox.cmp(a.m_bdbox);
102  if (diff) return diff;
103  // the type
104  diff = getType() - a.getType();
105  if (diff) return (diff < 0) ? -1 : 1;
106 
107  return 0;
108  }
109 protected:
111  static Box2f getBdBox(int numPt, Vec2f const *pt) {
112  if (numPt <= 0) {
113  return Box2f();
114  }
115 
116  float minV[2], maxV[2];
117  for (int c = 0; c < 2; c++) minV[c] = maxV[c] = pt[0][c];
118 
119  for (int i = 1; i < numPt; i++) {
120  for (int c = 0; c < 2; c++) {
121  float v = pt[i][c];
122  if (v < minV[c]) minV[c] = v;
123  else if (v > maxV[c]) maxV[c] = v;
124  }
125  }
126 
127  return Box2f(Vec2f(minV[0], minV[1]), Vec2f(maxV[0], maxV[1]));
128  }
129 
130  // a function to extend the bdbox
131 
133  void extendBDBox(float val) {
134  m_bdBoxExt = val;
135  }
136 
138  MWAWPict() : m_bdbox(), m_bdBoxExt (0.0) {}
140  MWAWPict(MWAWPict const &p) : m_bdbox(), m_bdBoxExt (0.0) {
141  *this=p;
142  }
145  if (&p == this) return *this;
146  m_bdbox = p.m_bdbox;
148  return *this;
149  }
150 
151 private:
155  float m_bdBoxExt;
156 };
157 
158 #endif
159 // vim: set filetype=cpp tabstop=2 shiftwidth=2 cindent autoindent smartindent noexpandtab:
int cmp(Box2< T > const &p) const
comparison function : fist sorts min by Y,X values then max extremity
Definition: libmwaw_internal.hxx:873
Vec2< float > Vec2f
Vec2 of float.
Definition: libmwaw_internal.hxx:596
ReadResult
an enum to defined the result of a parsing use by some picture&#39;s classes which can read their data ...
Definition: MWAWPict.hxx:74
void extend(T val)
extends the bdbox by (val, val) keeping the center
Definition: libmwaw_internal.hxx:836
Box2< float > Box2f
Box2 of float.
Definition: libmwaw_internal.hxx:909
virtual ~MWAWPict()
virtual destructor
Definition: MWAWPict.hxx:56
virtual int cmp(MWAWPict const &a) const
a virtual function used to obtain a strict order, must be redefined in the subs class ...
Definition: MWAWPict.hxx:99
Definition: MWAWPict.hxx:74
MWAWPict(MWAWPict const &p)
protected constructor must not be called directly
Definition: MWAWPict.hxx:140
Box2f m_bdbox
the bdbox (min and max pt)
Definition: MWAWPict.hxx:153
Definition: MWAWPict.hxx:74
float m_bdBoxExt
the actual extension of the original box,
Definition: MWAWPict.hxx:155
void setBdBox(Box2f const &box)
sets the bdbox of the picture
Definition: MWAWPict.hxx:84
Type
the different picture types:
Definition: MWAWPict.hxx:64
Definition: MWAWPict.hxx:64
static Box2f getBdBox(int numPt, Vec2f const *pt)
computes the minimum and maximum of a list of point
Definition: MWAWPict.hxx:111
Definition: MWAWPict.hxx:74
Definition: MWAWPict.hxx:64
Box2f getBdBox() const
returns the bdbox of the picture
Definition: MWAWPict.hxx:77
MWAWPict()
protected constructor must not be called directly
Definition: MWAWPict.hxx:138
Definition: MWAWPict.hxx:74
Definition: MWAWPict.hxx:64
virtual Type getType() const =0
returns the picture type
void extendBDBox(float val)
udaptes the bdbox, by extended it by (val-previousVal)
Definition: MWAWPict.hxx:133
virtual bool getBinary(WPXBinaryData &, std::string &) const
tries to convert the picture in a binary data :
Definition: MWAWPict.hxx:92
Generic function used to define/store a picture.
Definition: MWAWPict.hxx:52
MWAWPict & operator=(MWAWPict const &p)
protected operator= must not be called directly
Definition: MWAWPict.hxx:144

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