Qwt User's Guide 6.1.2

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qwt_samples.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_SAMPLES_H
11 #define QWT_SAMPLES_H 1
12
13 #include "qwt_global.h"
14 #include "qwt_interval.h"
15 #include <qvector.h>
16 #include <qrect.h>
17
19 class QWT_EXPORT QwtIntervalSample
20 {
21 public:
22 QwtIntervalSample();
23 QwtIntervalSample( double, const QwtInterval & );
24 QwtIntervalSample( double value, double min, double max );
25
26 bool operator==( const QwtIntervalSample & ) const;
27 bool operator!=( const QwtIntervalSample & ) const;
28
30 double value;
31
33 QwtInterval interval;
34 };
35
40 inline QwtIntervalSample::QwtIntervalSample():
41 value( 0.0 )
42 {
43 }
44
46 inline QwtIntervalSample::QwtIntervalSample(
47 double v, const QwtInterval &intv ):
48 value( v ),
49 interval( intv )
50 {
51 }
52
54 inline QwtIntervalSample::QwtIntervalSample(
55 double v, double min, double max ):
56 value( v ),
57 interval( min, max )
58 {
59 }
60
62 inline bool QwtIntervalSample::operator==(
63 const QwtIntervalSample &other ) const
64 {
65 return value == other.value && interval == other.interval;
66 }
67
69 inline bool QwtIntervalSample::operator!=(
70 const QwtIntervalSample &other ) const
71 {
72 return !( *this == other );
73 }
74
76 class QWT_EXPORT QwtSetSample
77 {
78 public:
79 QwtSetSample();
80 QwtSetSample( double, const QVector<double> & = QVector<double>() );
81
82 bool operator==( const QwtSetSample &other ) const;
83 bool operator!=( const QwtSetSample &other ) const;
84
85 double added() const;
86
88 double value;
89
91 QVector<double> set;
92 };
93
98 inline QwtSetSample::QwtSetSample():
99 value( 0.0 )
100 {
101 }
102
109 inline QwtSetSample::QwtSetSample( double v, const QVector< double > &s ):
110 value( v ),
111 set( s )
112 {
113 }
114
116 inline bool QwtSetSample::operator==( const QwtSetSample &other ) const
117 {
118 return value == other.value && set == other.set;
119 }
120
122 inline bool QwtSetSample::operator!=( const QwtSetSample &other ) const
123 {
124 return !( *this == other );
125 }
126
128 inline double QwtSetSample::added() const
129 {
130 double y = 0.0;
131 for ( int i = 0; i < set.size(); i++ )
132 y += set[i];
133
134 return y;
135 }
136
146 class QWT_EXPORT QwtOHLCSample
147 {
148 public:
149 QwtOHLCSample( double time = 0.0,
150 double open = 0.0, double high = 0.0,
151 double low = 0.0, double close = 0.0 );
152
153 QwtInterval boundingInterval() const;
154
155 bool isValid() const;
156
161 double time;
162
164 double open;
165
167 double high;
168
170 double low;
171
173 double close;
174 };
175
176
186 inline QwtOHLCSample::QwtOHLCSample( double t,
187 double o, double h, double l, double c ):
188 time( t ),
189 open( o ),
190 high( h ),
191 low( l ),
192 close( c )
193 {
194 }
195
207 inline bool QwtOHLCSample::isValid() const
208 {
209 return ( low <= high )
210 && ( open >= low )
211 && ( open <= high )
212 && ( close >= low )
213 && ( close <= high );
214 }
215
224 inline QwtInterval QwtOHLCSample::boundingInterval() const
225 {
226 double minY = open;
227 minY = qMin( minY, high );
228 minY = qMin( minY, low );
229 minY = qMin( minY, close );
230
231 double maxY = open;
232 maxY = qMax( maxY, high );
233 maxY = qMax( maxY, low );
234 maxY = qMax( maxY, close );
235
236 return QwtInterval( minY, maxY );
237 }
238
239 #endif
QwtOHLCSample::open
double open
Opening price.
Definition: qwt_samples.h:164
QwtSetSample::operator!=
bool operator!=(const QwtSetSample &other) const
Compare operator.
Definition: qwt_samples.h:122
QwtSetSample::operator==
bool operator==(const QwtSetSample &other) const
Compare operator.
Definition: qwt_samples.h:116
QwtOHLCSample::isValid
bool isValid() const
Check if a sample is valid.
Definition: qwt_samples.h:207
QwtOHLCSample::boundingInterval
QwtInterval boundingInterval() const
Calculate the bounding interval of the OHLC values.
Definition: qwt_samples.h:224
QwtIntervalSample::interval
QwtInterval interval
Interval.
Definition: qwt_samples.h:33
QwtIntervalSample::QwtIntervalSample
QwtIntervalSample()
Definition: qwt_samples.h:40
QwtOHLCSample::high
double high
Highest price.
Definition: qwt_samples.h:167
QwtOHLCSample::time
double time
Definition: qwt_samples.h:161
QwtOHLCSample::close
double close
Closing price.
Definition: qwt_samples.h:173
QwtIntervalSample
A sample of the types (x1-x2, y) or (x, y1-y2)
Definition: qwt_samples.h:19
QwtIntervalSample::operator!=
bool operator!=(const QwtIntervalSample &) const
Compare operator.
Definition: qwt_samples.h:69
QwtIntervalSample::value
double value
Value.
Definition: qwt_samples.h:30
QwtSetSample::added
double added() const
Definition: qwt_samples.h:128
QwtOHLCSample::QwtOHLCSample
QwtOHLCSample(double time=0.0, double open=0.0, double high=0.0, double low=0.0, double close=0.0)
Definition: qwt_samples.h:186
QwtIntervalSample::operator==
bool operator==(const QwtIntervalSample &) const
Compare operator.
Definition: qwt_samples.h:62
QwtOHLCSample
Open-High-Low-Close sample used in financial charts.
Definition: qwt_samples.h:146
QwtSetSample::QwtSetSample
QwtSetSample()
Definition: qwt_samples.h:98
QwtSetSample
A sample of the types (x1...xn, y) or (x, y1..yn)
Definition: qwt_samples.h:76
QwtSetSample::value
double value
value
Definition: qwt_samples.h:88
QwtInterval
A class representing an interval.
Definition: qwt_interval.h:26
QwtOHLCSample::low
double low
Lowest price.
Definition: qwt_samples.h:170
QwtSetSample::set
QVector< double > set
Vector of values associated to value.
Definition: qwt_samples.h:91