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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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  * - PictBasic: regroup basic pict shape (line, circle, ...)
39  * - PictBitmap: regroup some classes used to store bitmap
40  * - PictData: regroup the data which can be read via a WPXBinaryData
41  */
42 
43 #ifndef MWAW_PICT
44 # define MWAW_PICT
45 
46 # include <assert.h>
47 # include <ostream>
48 # include <vector>
49 
50 # include "libmwaw_internal.hxx"
51 
53 class MWAWPict
54 {
55 public:
57  virtual ~MWAWPict() {}
58 
69  virtual Type getType() const = 0;
70 
78 
80  Box2f getBdBox() const {
81  Box2f res(m_bdbox);
82  res.extend(m_bdBoxExt);
83  return res;
84  }
85 
87  void setBdBox(Box2f const &box) {
88  m_bdbox = box;
89  }
90 
95  virtual bool getBinary(WPXBinaryData &, std::string &) const {
96  return false;
97  }
98 
102  virtual int cmp(MWAWPict const &a) const {
103  // first compare the bdbox
104  int diff = m_bdbox.cmp(a.m_bdbox);
105  if (diff) return diff;
106  // the type
107  diff = getType() - a.getType();
108  if (diff) return (diff < 0) ? -1 : 1;
109 
110  return 0;
111  }
112 protected:
114  static Box2f getBdBox(int numPt, Vec2f const *pt) {
115  if (numPt <= 0) {
116  return Box2f();
117  }
118 
119  float minV[2], maxV[2];
120  for (int c = 0; c < 2; c++) minV[c] = maxV[c] = pt[0][c];
121 
122  for (int i = 1; i < numPt; i++) {
123  for (int c = 0; c < 2; c++) {
124  float v = pt[i][c];
125  if (v < minV[c]) minV[c] = v;
126  else if (v > maxV[c]) maxV[c] = v;
127  }
128  }
129 
130  return Box2f(Vec2f(minV[0], minV[1]), Vec2f(maxV[0], maxV[1]));
131  }
132 
133  // a function to extend the bdbox
134 
136  void extendBDBox(float val) {
137  m_bdBoxExt = val;
138  }
139 
141  MWAWPict() : m_bdbox(), m_bdBoxExt (0.0) {}
143  MWAWPict(MWAWPict const &p) : m_bdbox(), m_bdBoxExt (0.0) {
144  *this=p;
145  }
148  if (&p == this) return *this;
149  m_bdbox = p.m_bdbox;
151  return *this;
152  }
153 
154 private:
158  float m_bdBoxExt;
159 };
160 
161 #endif
162 // 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:841
Vec2< float > Vec2f
Vec2 of float.
Definition: libmwaw_internal.hxx:582
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:77
void extend(T val)
extends the bdbox by (val, val) keeping the center
Definition: libmwaw_internal.hxx:822
Box2< float > Box2f
Box2 of float.
Definition: libmwaw_internal.hxx:877
virtual ~MWAWPict()
virtual destructor
Definition: MWAWPict.hxx:57
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:102
Definition: MWAWPict.hxx:77
Definition: MWAWPict.hxx:67
MWAWPict(MWAWPict const &p)
protected constructor must not be called directly
Definition: MWAWPict.hxx:143
Box2f m_bdbox
the bdbox (min and max pt)
Definition: MWAWPict.hxx:156
Definition: MWAWPict.hxx:77
Definition: MWAWPict.hxx:67
float m_bdBoxExt
the actual extension of the original box,
Definition: MWAWPict.hxx:158
void setBdBox(Box2f const &box)
sets the bdbox of the picture
Definition: MWAWPict.hxx:87
Type
the different picture types:
Definition: MWAWPict.hxx:67
Definition: MWAWPict.hxx:67
static Box2f getBdBox(int numPt, Vec2f const *pt)
computes the minimum and maximum of a list of point
Definition: MWAWPict.hxx:114
Definition: MWAWPict.hxx:77
Definition: MWAWPict.hxx:67
Box2f getBdBox() const
returns the bdbox of the picture
Definition: MWAWPict.hxx:80
MWAWPict()
protected constructor must not be called directly
Definition: MWAWPict.hxx:141
Definition: MWAWPict.hxx:77
Definition: MWAWPict.hxx:67
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:136
virtual bool getBinary(WPXBinaryData &, std::string &) const
tries to convert the picture in a binary data :
Definition: MWAWPict.hxx:95
Generic function used to define/store a picture.
Definition: MWAWPict.hxx:53
MWAWPict & operator=(MWAWPict const &p)
protected operator= must not be called directly
Definition: MWAWPict.hxx:147

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