FactMetaData.cc 6.31 KB
Newer Older
Don Gagne's avatar
Don Gagne committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
/*=====================================================================
 
 QGroundControl Open Source Ground Control Station
 
 (c) 2009 - 2014 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 
 This file is part of the QGROUNDCONTROL project
 
 QGROUNDCONTROL is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 QGROUNDCONTROL is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
 
 ======================================================================*/

/// @file
///     @brief Object which exposes a FactMetaData
///
///     @author Don Gagne <don@thegagnes.com>

#include "FactMetaData.h"

31 32
#include <QDebug>

Don Gagne's avatar
Don Gagne committed
33 34
#include <limits>

35 36
FactMetaData::FactMetaData(ValueType_t type, QObject* parent) :
    QObject(parent),
37
    _group("*Default Group"),
38 39 40 41
    _type(type),
    _defaultValue(0),
    _defaultValueAvailable(false),
    _min(_minForType()),
Don Gagne's avatar
Don Gagne committed
42 43 44
    _max(_maxForType()),
    _minIsDefaultForType(true),
    _maxIsDefaultForType(true)
45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
{

}

QVariant FactMetaData::defaultValue(void)
{
    if (_defaultValueAvailable) {
        return _defaultValue;
    } else {
        qWarning() << "Attempt to access unavailable default value";
        return QVariant(0);
    }
}

void FactMetaData::setDefaultValue(const QVariant& defaultValue)
{
    if (_min <= defaultValue && defaultValue <= _max) {
        _defaultValue = defaultValue;
        _defaultValueAvailable = true;
    } else {
        qWarning() << "Attempt to set default value which is outside min/max range";
    }
}

void FactMetaData::setMin(const QVariant& min)
{
    if (min > _minForType()) {
        _min = min;
Don Gagne's avatar
Don Gagne committed
73
        _minIsDefaultForType = false;
74 75 76 77 78 79 80 81 82 83 84 85 86
    } else {
        qWarning() << "Attempt to set min below allowable value";
        _min = _minForType();
    }
}

void FactMetaData::setMax(const QVariant& max)
{
    if (max > _maxForType()) {
        qWarning() << "Attempt to set max above allowable value";
        _max = _maxForType();
    } else {
        _max = max;
Don Gagne's avatar
Don Gagne committed
87
        _maxIsDefaultForType = false;
88 89 90 91
    }
}

QVariant FactMetaData::_minForType(void)
Don Gagne's avatar
Don Gagne committed
92
{
93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
    switch (_type) {
        case valueTypeUint8:
            return QVariant(std::numeric_limits<unsigned char>::min());
        case valueTypeInt8:
            return QVariant(std::numeric_limits<signed char>::min());
        case valueTypeUint16:
            return QVariant(std::numeric_limits<unsigned short int>::min());
        case valueTypeInt16:
            return QVariant(std::numeric_limits<short int>::min());
        case valueTypeUint32:
            return QVariant(std::numeric_limits<unsigned int>::min());
        case valueTypeInt32:
            return QVariant(std::numeric_limits<int>::min());
        case valueTypeFloat:
            return QVariant(-std::numeric_limits<float>::max());
        case valueTypeDouble:
            return QVariant(-std::numeric_limits<double>::max());
    }
Don Gagne's avatar
Don Gagne committed
111 112 113
    
    // Make windows compiler happy, even switch is full cased
    return QVariant();
Don Gagne's avatar
Don Gagne committed
114
}
Don Gagne's avatar
Don Gagne committed
115

116
QVariant FactMetaData::_maxForType(void)
Don Gagne's avatar
Don Gagne committed
117
{
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
    switch (_type) {
        case valueTypeUint8:
            return QVariant(std::numeric_limits<unsigned char>::max());
        case valueTypeInt8:
            return QVariant(std::numeric_limits<signed char>::max());
        case valueTypeUint16:
            return QVariant(std::numeric_limits<unsigned short int>::max());
        case valueTypeInt16:
            return QVariant(std::numeric_limits<short int>::max());
        case valueTypeUint32:
            return QVariant(std::numeric_limits<unsigned int>::max());
        case valueTypeInt32:
            return QVariant(std::numeric_limits<int>::max());
        case valueTypeFloat:
            return QVariant(std::numeric_limits<float>::max());
        case valueTypeDouble:
            return QVariant(std::numeric_limits<double>::max());
    }
Don Gagne's avatar
Don Gagne committed
136 137 138
    
    // Make windows compiler happy, even switch is full cased
    return QVariant();
Don Gagne's avatar
Don Gagne committed
139
}
Don Gagne's avatar
Don Gagne committed
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194

bool FactMetaData::convertAndValidate(const QVariant& value, bool convertOnly, QVariant& typedValue, QString& errorString)
{
    bool convertOk;
    
    errorString.clear();
    
    switch (type()) {
        case FactMetaData::valueTypeInt8:
        case FactMetaData::valueTypeInt16:
        case FactMetaData::valueTypeInt32:
            typedValue = QVariant(value.toInt(&convertOk));
            if (!convertOnly && convertOk) {
                if (min() > typedValue || typedValue > max()) {
                    errorString = QString("Value must be within %1 and %2").arg(min().toInt()).arg(max().toInt());
                }
            }
            break;
            
        case FactMetaData::valueTypeUint8:
        case FactMetaData::valueTypeUint16:
        case FactMetaData::valueTypeUint32:
            typedValue = QVariant(value.toUInt(&convertOk));
            if (!convertOnly && convertOk) {
                if (min() > typedValue || typedValue > max()) {
                    errorString = QString("Value must be within %1 and %2").arg(min().toUInt()).arg(max().toUInt());
                }
            }
            break;
            
        case FactMetaData::valueTypeFloat:
            typedValue = QVariant(value.toFloat(&convertOk));
            if (!convertOnly && convertOk) {
                if (min() > typedValue || typedValue > max()) {
                    errorString = QString("Value must be within %1 and %2").arg(min().toFloat()).arg(max().toFloat());
                }
            }
            break;
            
        case FactMetaData::valueTypeDouble:
            typedValue = QVariant(value.toDouble(&convertOk));
            if (!convertOnly && convertOk) {
                if (min() > typedValue || typedValue > max()) {
                    errorString = QString("Value must be within %1 and %2").arg(min().toDouble()).arg(max().toDouble());
                }
            }
            break;
    }
    
    if (!convertOk) {
        errorString = "Invalid number";
    }
    
    return convertOk && errorString.isEmpty();
}