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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29 * the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
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 librevenge::RVNGBinaryData
40  */
41 
42 #ifndef MWAW_PICT
43 # define MWAW_PICT
44 
45 # include <ostream>
46 # include <vector>
47 
48 # include "libmwaw_internal.hxx"
49 
51 class MWAWPict
52 {
53 public:
55  virtual ~MWAWPict();
56 
65  virtual Type getType() const = 0;
66 
74 
77  {
78  MWAWBox2f res(m_bdbox);
79  res.extend(m_bdBoxExt);
80  return res;
81  }
82 
84  void setBdBox(MWAWBox2f const &box)
85  {
86  m_bdbox = box;
87  }
88 
93  virtual bool getBinary(MWAWEmbeddedObject &) const
94  {
95  return false;
96  }
97 
101  virtual int cmp(MWAWPict const &a) const
102  {
103  // first compare the bdbox
104  if (m_bdbox!=a.m_bdbox)
105  return m_bdbox < a.m_bdbox ? -1 : 1;
106  // the type
107  int diff = getType() - a.getType();
108  if (diff) return (diff < 0) ? -1 : 1;
109 
110  return 0;
111  }
112 protected:
114  static MWAWBox2f getBdBox(int numPt, MWAWVec2f const *pt)
115  {
116  if (numPt <= 0) {
117  return MWAWBox2f();
118  }
119 
120  float minV[2], maxV[2];
121  for (int c = 0; c < 2; c++) minV[c] = maxV[c] = pt[0][c];
122 
123  for (int i = 1; i < numPt; i++) {
124  for (int c = 0; c < 2; c++) {
125  float v = pt[i][c];
126  if (v < minV[c]) minV[c] = v;
127  else if (v > maxV[c]) maxV[c] = v;
128  }
129  }
130 
131  return MWAWBox2f(MWAWVec2f(minV[0], minV[1]), MWAWVec2f(maxV[0], maxV[1]));
132  }
133 
134  // a function to extend the bdbox
135 
137  void extendBDBox(float val)
138  {
139  m_bdBoxExt = val;
140  }
141 
144  : m_bdbox()
145  , m_bdBoxExt(0.0)
146  {
147  }
149  explicit MWAWPict(MWAWPict const &p)
150  : m_bdbox()
151  , m_bdBoxExt(0.0)
152  {
153  *this=p;
154  }
157  {
158  if (&p == this) return *this;
159  m_bdbox = p.m_bdbox;
161  return *this;
162  }
163 
164 private:
168  float m_bdBoxExt;
169 };
170 
171 #endif
172 // vim: set filetype=cpp tabstop=2 shiftwidth=2 cindent autoindent smartindent noexpandtab:
void extend(T val)
extends the bdbox by (val, val) keeping the center
Definition: libmwaw_internal.hxx:1122
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:73
void setBdBox(MWAWBox2f const &box)
sets the bdbox of the picture
Definition: MWAWPict.hxx:84
Definition: MWAWPict.hxx:73
MWAWPict(MWAWPict const &p)
protected constructor must not be called directly
Definition: MWAWPict.hxx:149
MWAWVec2< float > MWAWVec2f
MWAWVec2 of float.
Definition: libmwaw_internal.hxx:842
virtual ~MWAWPict()
virtual destructor
Definition: MWAWPict.cxx:36
Definition: MWAWPict.hxx:73
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:101
float m_bdBoxExt
the actual extension of the original box,
Definition: MWAWPict.hxx:168
Type
the different picture types:
Definition: MWAWPict.hxx:63
small class use to define a embedded object
Definition: libmwaw_internal.hxx:467
virtual bool getBinary(MWAWEmbeddedObject &) const
tries to convert the picture in a binary data :
Definition: MWAWPict.hxx:93
Definition: MWAWPict.hxx:63
MWAWBox2f getBdBox() const
returns the bdbox of the picture
Definition: MWAWPict.hxx:76
MWAWBox2< float > MWAWBox2f
MWAWBox2 of float.
Definition: libmwaw_internal.hxx:1193
Definition: MWAWPict.hxx:73
Definition: MWAWPict.hxx:63
MWAWPict()
protected constructor must not be called directly
Definition: MWAWPict.hxx:143
Definition: MWAWPict.hxx:73
Definition: MWAWPict.hxx:63
virtual Type getType() const =0
returns the picture type
static MWAWBox2f getBdBox(int numPt, MWAWVec2f const *pt)
computes the minimum and maximum of a list of point
Definition: MWAWPict.hxx:114
void extendBDBox(float val)
udaptes the bdbox, by extended it by (val-previousVal)
Definition: MWAWPict.hxx:137
Generic function used to define/store a picture.
Definition: MWAWPict.hxx:51
MWAWBox2f m_bdbox
the bdbox (min and max pt)
Definition: MWAWPict.hxx:166
MWAWPict & operator=(MWAWPict const &p)
protected operator= must not be called directly
Definition: MWAWPict.hxx:156

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