mirror of git://sigrok.org/pulseview
121 lines
2.8 KiB
C++
121 lines
2.8 KiB
C++
/*
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* This file is part of the PulseView project.
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*
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* Copyright (C) 2015 Jens Steinhauser <jens.steinhauser@gmail.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; either version 2 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 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 "timestampspinbox.hpp"
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#include <QLineEdit>
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#include <QRegExp>
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namespace pv {
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namespace widgets {
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TimestampSpinBox::TimestampSpinBox(QWidget* parent)
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: QAbstractSpinBox(parent)
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, precision_(9)
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, stepsize_("1e-6")
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{
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connect(this, SIGNAL(editingFinished()), this, SLOT(on_editingFinished()));
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updateEdit();
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}
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void TimestampSpinBox::stepBy(int steps)
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{
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setValue(value_ + steps * stepsize_);
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}
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QAbstractSpinBox::StepEnabled TimestampSpinBox::stepEnabled() const
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{
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return QAbstractSpinBox::StepUpEnabled | QAbstractSpinBox::StepDownEnabled;
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}
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unsigned TimestampSpinBox::precision() const
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{
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return precision_;
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}
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void TimestampSpinBox::setPrecision(unsigned precision)
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{
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precision_ = precision;
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updateEdit();
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}
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const pv::util::Timestamp& TimestampSpinBox::singleStep() const
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{
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return stepsize_;
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}
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void TimestampSpinBox::setSingleStep(const pv::util::Timestamp& step)
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{
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stepsize_ = step;
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}
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const pv::util::Timestamp& TimestampSpinBox::value() const
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{
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return value_;
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}
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QSize TimestampSpinBox::minimumSizeHint() const
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{
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const QFontMetrics fm(fontMetrics());
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const int l = round(value_).str().size() + precision_ + 10;
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const int w = fm.width(QString(l, '0'));
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const int h = lineEdit()->minimumSizeHint().height();
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return QSize(w, h);
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}
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void TimestampSpinBox::setValue(const pv::util::Timestamp& val)
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{
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if (val == value_)
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return;
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value_ = val;
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updateEdit();
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valueChanged(value_);
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}
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void TimestampSpinBox::on_editingFinished()
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{
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if (!lineEdit()->isModified())
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return;
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lineEdit()->setModified(false);
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QRegExp re(R"(\s*([-+]?)\s*([0-9]+\.?[0-9]*).*)");
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if (re.exactMatch(text())) {
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QStringList captures = re.capturedTexts();
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captures.removeFirst(); // remove entire match
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QString str = captures.join("");
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setValue(pv::util::Timestamp(str.toStdString()));
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} else {
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// replace the malformed entered string with the old value
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updateEdit();
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}
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}
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void TimestampSpinBox::updateEdit()
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{
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QString newtext = pv::util::format_time_si(
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value_, pv::util::SIPrefix::none, precision_);
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lineEdit()->setText(newtext);
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}
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} // namespace widgets
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} // namespace pv
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