FreeCAD

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/***************************************************************************
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 *   Copyright (c) 2013 Jürgen Riegel <juergen.riegel@web.de>              *
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 *                                                                         *
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 *   This file is part of the FreeCAD CAx development system.              *
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 *                                                                         *
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 *   This library is free software; you can redistribute it and/or         *
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 *   modify it under the terms of the GNU Library General Public           *
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 *   License as published by the Free Software Foundation; either          *
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 *   version 2 of the License, or (at your option) any later version.      *
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 *                                                                         *
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 *   This library  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 Library General Public License for more details.                  *
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 *                                                                         *
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 *   You should have received a copy of the GNU Library General Public     *
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 *   License along with this library; see the file COPYING.LIB. If not,    *
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
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 *                                                                         *
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 ***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <QApplication>
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# include <QClipboard>
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# include <QLocale>
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#endif
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#include "DlgUnitsCalculatorImp.h"
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#include "ui_DlgUnitsCalculator.h"
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#include <Base/UnitsApi.h>
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using namespace Gui::Dialog;
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/* TRANSLATOR Gui::Dialog::DlgUnitsCalculator */
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/**
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 *  Constructs a DlgUnitsCalculator which is a child of 'parent', with the
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 *  name 'name' and widget flags set to 'f'
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 *
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 *  The dialog will by default be modeless, unless you set 'modal' to
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 *  true to construct a modal dialog.
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 */
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DlgUnitsCalculator::DlgUnitsCalculator( QWidget* parent, Qt::WindowFlags fl )
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  : QDialog(parent, fl), ui(new Ui_DlgUnitCalculator)
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{
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    // create widgets
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    ui->setupUi(this);
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    this->setAttribute(Qt::WA_DeleteOnClose);
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    ui->comboBoxScheme->addItem(QString::fromLatin1("Preference system"), static_cast<int>(-1));
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    int num = static_cast<int>(Base::UnitSystem::NumUnitSystemTypes);
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    for (int i=0; i<num; i++) {
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        QString item = Base::UnitsApi::getDescription(static_cast<Base::UnitSystem>(i));
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        ui->comboBoxScheme->addItem(item, i);
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    }
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    connect(ui->unitsBox, qOverload<int>(&QComboBox::activated),
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            this, &DlgUnitsCalculator::onUnitsBoxActivated);
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    connect(ui->comboBoxScheme, qOverload<int>(&QComboBox::activated),
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            this, &DlgUnitsCalculator::onComboBoxSchemeActivated);
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    connect(ui->spinBoxDecimals, qOverload<int>(&QSpinBox::valueChanged),
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            this, &DlgUnitsCalculator::onSpinBoxDecimalsValueChanged);
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    connect(ui->ValueInput, qOverload<const Base::Quantity&>(&InputField::valueChanged),
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            this, &DlgUnitsCalculator::valueChanged);
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    connect(ui->ValueInput, &InputField::returnPressed,
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            this, &DlgUnitsCalculator::returnPressed);
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    connect(ui->ValueInput, &InputField::parseError, this, &DlgUnitsCalculator::parseError);
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    connect(ui->UnitInput, &QLineEdit::textChanged, this, &DlgUnitsCalculator::textChanged);
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    connect(ui->UnitInput, &QLineEdit::returnPressed, this, &DlgUnitsCalculator::returnPressed);
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    connect(ui->pushButton_Close, &QPushButton::clicked, this, &DlgUnitsCalculator::accept);
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    connect(ui->pushButton_Copy, &QPushButton::clicked, this, &DlgUnitsCalculator::copy);
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    ui->ValueInput->setParamGrpPath(QByteArray("User parameter:BaseApp/History/UnitsCalculator"));
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    // set a default that also illustrates how the dialog works
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    ui->ValueInput->setText(QString::fromLatin1("1 cm"));
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    ui->UnitInput->setText(QString::fromLatin1("in"));
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    units << Base::Unit::Acceleration
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          << Base::Unit::AmountOfSubstance
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          << Base::Unit::Angle
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          << Base::Unit::Area
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          << Base::Unit::Density
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          << Base::Unit::CurrentDensity
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          << Base::Unit::DissipationRate
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          << Base::Unit::DynamicViscosity
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          << Base::Unit::ElectricalCapacitance
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          << Base::Unit::ElectricalInductance
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          << Base::Unit::ElectricalConductance
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          << Base::Unit::ElectricalResistance
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          << Base::Unit::ElectricalConductivity
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          << Base::Unit::ElectricCharge
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          << Base::Unit::ElectricCurrent
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          << Base::Unit::ElectricPotential
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          << Base::Unit::Force
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          << Base::Unit::Frequency
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          << Base::Unit::HeatFlux
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          << Base::Unit::InverseArea
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          << Base::Unit::InverseLength
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          << Base::Unit::InverseVolume
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          << Base::Unit::KinematicViscosity
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          << Base::Unit::Length
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          << Base::Unit::LuminousIntensity
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          << Base::Unit::Mass
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          << Base::Unit::MagneticFieldStrength
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          << Base::Unit::MagneticFlux
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          << Base::Unit::MagneticFluxDensity
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          << Base::Unit::Magnetization
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          << Base::Unit::Power
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          << Base::Unit::Pressure
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          << Base::Unit::SpecificEnergy
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          << Base::Unit::SpecificHeat
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          << Base::Unit::Stiffness
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          << Base::Unit::Temperature
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          << Base::Unit::ThermalConductivity
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          << Base::Unit::ThermalExpansionCoefficient
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          << Base::Unit::ThermalTransferCoefficient
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          << Base::Unit::TimeSpan
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          << Base::Unit::VacuumPermittivity
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          << Base::Unit::Velocity
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          << Base::Unit::Volume
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          << Base::Unit::VolumeFlowRate
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          << Base::Unit::VolumetricThermalExpansionCoefficient
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          << Base::Unit::Work;
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    for (const Base::Unit& it : units) {
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        ui->unitsBox->addItem(it.getTypeString());
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    }
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    ui->quantitySpinBox->setValue(1.0);
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    ui->quantitySpinBox->setUnit(units.front());
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    ui->spinBoxDecimals->setValue(Base::UnitsApi::getDecimals());
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}
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/** Destroys the object and frees any allocated resources */
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DlgUnitsCalculator::~DlgUnitsCalculator() = default;
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void DlgUnitsCalculator::accept()
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{
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    QDialog::accept();
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}
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void DlgUnitsCalculator::reject()
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{
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    QDialog::reject();
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}
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void DlgUnitsCalculator::textChanged(QString unit)
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{
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    Q_UNUSED(unit)
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    valueChanged(actValue);
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}
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void DlgUnitsCalculator::valueChanged(const Base::Quantity& quant)
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{
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    // first check the unit, if it is invalid, getTypeString() outputs an empty string
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    // explicitly check for "ee" like in "eeV" because this would trigger an exception in Base::Unit
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    // since it expects then a scientific notation number like "1e3"
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    if ( (ui->UnitInput->text().mid(0, 2) == QString::fromLatin1("ee")) ||
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        Base::Unit(ui->UnitInput->text()).getTypeString().isEmpty()) {
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        ui->ValueOutput->setText(QString::fromLatin1("%1 %2").arg(tr("unknown unit:"), ui->UnitInput->text()));
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        ui->pushButton_Copy->setEnabled(false);
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    } else { // the unit is valid
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        // we can only convert units of the same type, thus check
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        if (Base::Unit(ui->UnitInput->text()).getTypeString() != quant.getUnit().getTypeString()) {
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            ui->ValueOutput->setText(tr("unit mismatch"));
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            ui->pushButton_Copy->setEnabled(false);
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        } else { // the unit is valid and has the same type
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            double convertValue = Base::Quantity::parse(QString::fromLatin1("1") + ui->UnitInput->text()).getValue();
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            // we got now e.g. for "1 in" the value '25.4' because 1 in = 25.4 mm
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            // the result is now just quant / convertValue because the input is always in a base unit
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            // (an input of "1 cm" will immediately be converted to "10 mm" by Gui::InputField of the dialog)
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            double value = quant.getValue() / convertValue;
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            // determine how many decimals we will need to avoid an output like "0.00"
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            // at first use scientific notation, if there is no "e", we can round it to the user-defined decimals,
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            // but the user-defined decimals might be too low for cases like "10 um" in "in",
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            // thus only if value > 0.005 because FC's default are 2 decimals
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            QString val = QLocale().toString(value, 'g');
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            if (!val.contains(QChar::fromLatin1('e')) && (value > 0.005))
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                val = QLocale().toString(value, 'f', Base::UnitsApi::getDecimals());
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            // create the output string
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            QString out = QString::fromLatin1("%1 %2").arg(val, ui->UnitInput->text());
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            ui->ValueOutput->setText(out);
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            ui->pushButton_Copy->setEnabled(true);
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        }
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    }
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    // store the input value
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    actValue = quant;
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}
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void DlgUnitsCalculator::parseError(const QString& errorText)
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{
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    ui->pushButton_Copy->setEnabled(false);
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    ui->ValueOutput->setText(errorText);
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}
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void DlgUnitsCalculator::copy()
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{
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    QClipboard *cb = QApplication::clipboard();
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    cb->setText(ui->ValueOutput->text());
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}
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void DlgUnitsCalculator::returnPressed()
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{
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    if (ui->pushButton_Copy->isEnabled()) {
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        ui->textEdit->append(ui->ValueInput->text() + QString::fromLatin1(" = ") + ui->ValueOutput->text());
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        ui->ValueInput->pushToHistory();
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    }
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}
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void DlgUnitsCalculator::onUnitsBoxActivated(int index)
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{
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    // SI units use [m], not [mm] for lengths
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    //
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    Base::Quantity q = ui->quantitySpinBox->value();
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    int32_t old = q.getUnit().getSignature().Length;
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    double value = q.getValue();
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    Base::Unit unit = units[index];
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    int32_t len = unit.getSignature().Length;
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    ui->quantitySpinBox->setValue(Base::Quantity(value * std::pow(10.0, 3*(len-old)), unit));
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}
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void DlgUnitsCalculator::onComboBoxSchemeActivated(int index)
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{
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    int item = ui->comboBoxScheme->itemData(index).toInt();
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    if (item > 0)
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        ui->quantitySpinBox->setSchema(static_cast<Base::UnitSystem>(item));
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    else
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        ui->quantitySpinBox->clearSchema();
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}
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void DlgUnitsCalculator::onSpinBoxDecimalsValueChanged(int value)
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{
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    ui->quantitySpinBox->setDecimals(value);
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}
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#include "moc_DlgUnitsCalculatorImp.cpp"
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