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Add SciDoubleSpinBox for a DoubleSpinBox that supports scientific E notation entry

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This commit is contained in:
Jon Beniston 2022-09-16 09:00:51 +01:00
parent 9895d4618c
commit 83a94fc375
3 changed files with 101 additions and 0 deletions
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2
sdrgui/CMakeLists.txt
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@ -65,6 +65,7 @@ set(sdrgui_SOURCES
gui/samplingdevicedialog.cpp
gui/scaleengine.cpp
gui/scaledimage.cpp
gui/scidoublespinbox.cpp
gui/sdrangelsplash.cpp
gui/spectrumcalibrationpointsdialog.cpp
gui/spectrummarkersdialog.cpp
@ -168,6 +169,7 @@ set(sdrgui_HEADERS
gui/samplingdevicedialog.h
gui/scaleengine.h
gui/scaledimage.h
gui/scidoublespinbox.h
gui/sdrangelsplash.h
gui/spectrumcalibrationpointsdialog.h
gui/spectrummarkersdialog.h

60
sdrgui/gui/scidoublespinbox.cpp Normal file
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@ -0,0 +1,60 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Jon Beniston, M7RCE //
// //
// This program 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include "scidoublespinbox.h"
SciDoubleSpinBox::SciDoubleSpinBox(QWidget *parent) :
QDoubleSpinBox(parent)
{
}
double SciDoubleSpinBox::valueFromText(const QString &text) const
{
return text.toDouble();
}
QValidator::State SciDoubleSpinBox::validate(QString &input, int &pos) const
{
bool ok;
input.toDouble(&ok);
if (ok) {
return QValidator::Acceptable;
}
QString validChars = "0123456789+-.e"; // 'C' locale, so no , separator
for (int i = 0; i < input.size(); i++)
{
if (validChars.indexOf(input[i]) == -1) {
return QValidator::Invalid;
}
}
if (input.count('e') > 1) {
return QValidator::Invalid;
}
if (input.count('.') > 1) {
return QValidator::Invalid;
}
if (input.count('+') > 2) {
return QValidator::Invalid;
}
if (input.count('-') > 2) {
return QValidator::Invalid;
}
return QValidator::Intermediate;
}

39
sdrgui/gui/scidoublespinbox.h Normal file
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@ -0,0 +1,39 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Jon Beniston, M7RCE //
// //
// This program 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef SDRGUI_GUI_SCIDOUBLESPINBOX_H
#define SDRGUI_GUI_SCIDOUBLESPINBOX_H
#include <QDoubleSpinBox>
#include "export.h"
// Scientific double spin box.
// Like a double spin box, except that we additionally scientific E notation for entry
// (E.g. 4.5e-4)
class SDRGUI_API SciDoubleSpinBox : public QDoubleSpinBox {
Q_OBJECT
public:
explicit SciDoubleSpinBox(QWidget *parent = nullptr);
virtual double valueFromText(const QString &text) const;
virtual QValidator::State validate(QString &input, int &pos) const;
};
#endif // SDRGUI_GUI_SCIDOUBLESPINBOX_H