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90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2015-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// Copyright (C) 2020-2024 Jon Beniston, M7RCE <jon@beniston.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QLineEdit>
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#include <QDoubleValidator>
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#include "decimaldelegate.h"
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// Allow "" or double
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class DoubleOrEmptyValidator : public QDoubleValidator {
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public:
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DoubleOrEmptyValidator(double bottom, double top, int decimals, QObject *parent = nullptr) :
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QDoubleValidator(bottom, top, decimals, parent)
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{
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}
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QValidator::State validate(QString& input, int &pos) const
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{
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if (input == "") {
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return QValidator::Acceptable;
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} else {
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return QDoubleValidator::validate(input, pos);
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}
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}
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};
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DecimalDelegate::DecimalDelegate(int precision, QObject *parent) :
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QStyledItemDelegate(parent),
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m_precision(precision),
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m_min(-std::numeric_limits<double>::max()),
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m_max(std::numeric_limits<double>::max())
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{
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}
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DecimalDelegate::DecimalDelegate(int precision, double min, double max, QObject *parent) :
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QStyledItemDelegate(parent),
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m_precision(precision),
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m_min(min),
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m_max(max)
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{
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}
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QString DecimalDelegate::displayText(const QVariant &value, const QLocale &locale) const
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{
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(void) locale;
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bool ok;
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double d = value.toDouble(&ok);
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if (ok) {
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return QString::number(d, 'f', m_precision);
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} else {
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return value.toString();
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}
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}
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QWidget *DecimalDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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(void) option;
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(void) index;
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QLineEdit* editor = new QLineEdit(parent);
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DoubleOrEmptyValidator *validator = new DoubleOrEmptyValidator(m_min, m_max, m_precision);
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validator->setBottom(m_min);
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validator->setTop(m_max);
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editor->setValidator(validator);
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return editor;
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}
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void DecimalDelegate::setRange(double min, double max)
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{
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m_min = min;
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m_max = max;
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}
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