MWAWPict.hxx Source File documentation

MWAWPict.hxx
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1/* -*- Mode: C++; c-default-style: "k&r"; indent-tabs-mode: nil; tab-width: 2; c-basic-offset: 2 -*- */
2
3/* libmwaw
4* Version: MPL 2.0 / LGPLv2+
5*
6* The contents of this file are subject to the Mozilla Public License Version
7* 2.0 (the "License"); you may not use this file except in compliance with
8* the License or as specified alternatively below. You may obtain a copy of
9* the License at http://www.mozilla.org/MPL/
10*
11* Software distributed under the License is distributed on an "AS IS" basis,
12* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13* for the specific language governing rights and limitations under the
14* License.
15*
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)
22*
23*
24* All Rights Reserved.
25*
26* For minor contributions see the git repository.
27*
28* Alternatively, the contents of this file may be used under the terms of
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{
53public:
55 virtual ~MWAWPict();
56
63 enum Type { PictData, Bitmap, Unknown };
65 virtual Type getType() const = 0;
66
73 enum ReadResult { MWAW_R_BAD=0, MWAW_R_OK, MWAW_R_OK_EMPTY, MWAW_R_MAYBE };
74
76 MWAWBox2f getBdBox() const
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 }
112protected:
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
143 MWAWPict()
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 }
156 MWAWPict &operator=(MWAWPict const &p)
157 {
158 if (&p == this) return *this;
159 m_bdbox = p.m_bdbox;
160 m_bdBoxExt = p.m_bdBoxExt;
161 return *this;
162 }
163
164private:
166 MWAWBox2f m_bdbox;
168 float m_bdBoxExt;
169};
170
171#endif
172// vim: set filetype=cpp tabstop=2 shiftwidth=2 cindent autoindent smartindent noexpandtab:
MWAWBox2< float >
MWAWBox2::extend
void extend(T val)
extends the bdbox by (val, val) keeping the center
Definition: libmwaw_internal.hxx:1122
MWAWPict
Generic function used to define/store a picture.
Definition: MWAWPict.hxx:52
MWAWPict::MWAWPict
MWAWPict()
protected constructor must not be called directly
Definition: MWAWPict.hxx:143
MWAWPict::getBdBox
static MWAWBox2f getBdBox(int numPt, MWAWVec2f const *pt)
computes the minimum and maximum of a list of point
Definition: MWAWPict.hxx:114
MWAWPict::Type
Type
the different picture types:
Definition: MWAWPict.hxx:63
MWAWPict::Bitmap
@ Bitmap
Definition: MWAWPict.hxx:63
MWAWPict::Unknown
@ Unknown
Definition: MWAWPict.hxx:63
MWAWPict::PictData
@ PictData
Definition: MWAWPict.hxx:63
MWAWPict::ReadResult
ReadResult
an enum to defined the result of a parsing use by some picture's classes which can read their data
Definition: MWAWPict.hxx:73
MWAWPict::MWAW_R_OK
@ MWAW_R_OK
Definition: MWAWPict.hxx:73
MWAWPict::MWAW_R_BAD
@ MWAW_R_BAD
Definition: MWAWPict.hxx:73
MWAWPict::MWAW_R_MAYBE
@ MWAW_R_MAYBE
Definition: MWAWPict.hxx:73
MWAWPict::MWAW_R_OK_EMPTY
@ MWAW_R_OK_EMPTY
Definition: MWAWPict.hxx:73
MWAWPict::m_bdbox
MWAWBox2f m_bdbox
the bdbox (min and max pt)
Definition: MWAWPict.hxx:166
MWAWPict::getType
virtual Type getType() const =0
returns the picture type
MWAWPict::cmp
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
MWAWPict::~MWAWPict
virtual ~MWAWPict()
virtual destructor
Definition: MWAWPict.cxx:36
MWAWPict::m_bdBoxExt
float m_bdBoxExt
the actual extension of the original box,
Definition: MWAWPict.hxx:168
MWAWPict::MWAWPict
MWAWPict(MWAWPict const &p)
protected constructor must not be called directly
Definition: MWAWPict.hxx:149
MWAWPict::setBdBox
void setBdBox(MWAWBox2f const &box)
sets the bdbox of the picture
Definition: MWAWPict.hxx:84
MWAWPict::operator=
MWAWPict & operator=(MWAWPict const &p)
protected operator= must not be called directly
Definition: MWAWPict.hxx:156
MWAWPict::getBinary
virtual bool getBinary(MWAWEmbeddedObject &) const
tries to convert the picture in a binary data :
Definition: MWAWPict.hxx:93
MWAWPict::extendBDBox
void extendBDBox(float val)
udaptes the bdbox, by extended it by (val-previousVal)
Definition: MWAWPict.hxx:137
MWAWPict::getBdBox
MWAWBox2f getBdBox() const
returns the bdbox of the picture
Definition: MWAWPict.hxx:76
MWAWVec2< float >
libmwaw_internal.hxx
MWAWBox2f
MWAWBox2< float > MWAWBox2f
MWAWBox2 of float.
Definition: libmwaw_internal.hxx:1193
MWAWVec2f
MWAWVec2< float > MWAWVec2f
MWAWVec2 of float.
Definition: libmwaw_internal.hxx:842
MWAWEmbeddedObject
small class use to define a embedded object
Definition: libmwaw_internal.hxx:467