QGIS API Documentation 3.28.0-Firenze (ed3ad0430f)
qgslonglongvalidator.h
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1/***************************************************************************
2 qgslonglongvalidator.h - description
3 -------------------
4 begin : August 2010
5 copyright : (C) 2010 by J├╝rgen E. Fischer
7
8 adapted version of QIntValidator for qint64
9 ***************************************************************************/
10
11/***************************************************************************
12 * *
13 * This program is free software; you can redistribute it and/or modify *
14 * it under the terms of the GNU General Public License as published by *
15 * the Free Software Foundation; either version 2 of the License, or *
16 * (at your option) any later version. *
17 * *
18 ***************************************************************************/
19
20#ifndef QGSLONGLONGVALIDATOR_H
21#define QGSLONGLONGVALIDATOR_H
22
23#include <limits>
24#include <QValidator>
25#include <QLocale>
26#include "qgis_gui.h"
27
32class GUI_EXPORT QgsLongLongValidator : public QValidator
33{
34 Q_OBJECT
35
36 public:
37 explicit QgsLongLongValidator( QObject *parent )
38 : QValidator( parent )
39 , b( std::numeric_limits<qint64>::min() )
40 , t( std::numeric_limits<qint64>::max() )
41 {}
42
43 QgsLongLongValidator( qint64 bottom, qint64 top, QObject *parent )
44 : QValidator( parent )
45 , b( bottom )
46 , t( top )
47 {}
48
49 QValidator::State validate( QString &input, int & ) const override
50 {
51 if ( input.isEmpty() )
52 return Intermediate;
53
54 if ( b >= 0 && input.startsWith( '-' ) )
55 return Invalid;
56
57 if ( t < 0 && input.startsWith( '+' ) )
58 return Invalid;
59
60 if ( input == QLatin1String( "-" ) || input == QLatin1String( "+" ) )
61 return Intermediate;
62
63
64 bool ok;
65 const qlonglong entered = input.toLongLong( &ok );
66 if ( !ok )
67 return Invalid;
68
69 if ( entered >= b && entered <= t )
70 return Acceptable;
71
72 if ( entered >= 0 )
73 {
74 // the -entered < b condition is necessary to allow people to type
75 // the minus last (e.g. for right-to-left languages)
76 return ( entered > t && -entered < b ) ? Invalid : Intermediate;
77 }
78 else
79 {
80 return ( entered < b ) ? Invalid : Intermediate;
81 }
82 }
83
84 void setBottom( qint64 bottom ) { b = bottom; }
85 void setTop( qint64 top ) { t = top; }
86
87 virtual void setRange( qint64 bottom, qint64 top )
88 {
89 b = bottom;
90 t = top;
91 }
92
93 qint64 bottom() const { return b; }
94 qint64 top() const { return t; }
95
96 private:
97 Q_DISABLE_COPY( QgsLongLongValidator )
98
99 qint64 b;
100 qint64 t;
101};
102
103#endif // QGSLONGLONGVALIDATOR_H
virtual void setRange(qint64 bottom, qint64 top)
QgsLongLongValidator(QObject *parent)
QgsLongLongValidator(qint64 bottom, qint64 top, QObject *parent)
void setBottom(qint64 bottom)
QValidator::State validate(QString &input, int &) const override