From ed1a836e0e4c4443d8fc491b1de331ad45c0d9dd Mon Sep 17 00:00:00 2001
From: Hanna K <hanna.knutsson@protonmail.com>
Date: Sun, 9 Jul 2023 08:49:45 +0200
Subject: [PATCH] Add option to disable units and to interpret unrecognized
 symbols as variables (unknowns) to preferences (issue #87)

---
 src/preferencesdialog.cpp | 10 ++++++++++
 src/preferencesdialog.h   |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/src/preferencesdialog.cpp b/src/preferencesdialog.cpp
index 48b4eee..84ff1aa 100644
--- a/src/preferencesdialog.cpp
+++ b/src/preferencesdialog.cpp
@@ -193,6 +193,7 @@ PreferencesDialog::PreferencesDialog(QWidget *parent) : QDialog(parent) {
 	BOX_G(tr("Simplified percentage calculation"), settings->simplified_percentage, simplifiedPercentageToggled(bool));
 	BOX_G(tr("Read precision"), settings->evalops.parse_options.read_precision != DONT_READ_PRECISION, readPrecisionToggled(bool));
 	BOX_G(tr("Limit implicit multiplication"), settings->evalops.parse_options.limit_implicit_multiplication, limitImplicitToggled(bool));
+	BOX_G(tr("Interpret unrecognized symbols as variables"), settings->evalops.parse_options.unknowns_enabled, unknownsToggled(bool));
 	l2->addWidget(new QLabel(tr("Interval calculation:"), this), r, 0);
 	combo = new QComboBox(this);
 	combo->addItem(tr("Variance formula"), INTERVAL_CALCULATION_VARIANCE_FORMULA);
@@ -264,6 +265,7 @@ PreferencesDialog::PreferencesDialog(QWidget *parent) : QDialog(parent) {
 	l->addStretch(1);
 	l2 = new QGridLayout(w3); l2->setSizeConstraint(QLayout::SetFixedSize);
 	r = 0;
+	BOX_G(tr("Enable units"), settings->evalops.parse_options.units_enabled, unitsToggled(bool));
 	BOX_G(tr("Abbreviate names"), settings->printops.abbreviate_names, abbreviateNamesToggled(bool));
 	BOX_G(tr("Use binary prefixes for information units"), CALCULATOR->usesBinaryPrefixes() > 0, binaryPrefixesToggled(bool));
 	l2->addWidget(new QLabel(tr("Automatic unit conversion:"), this), r, 0);
@@ -489,6 +491,10 @@ void PreferencesDialog::exratesChanged(int i) {
 		exratesSpin->setPrefix(str.right(index));
 	}
 }
+void PreferencesDialog::unitsToggled(bool b) {
+	settings->evalops.parse_options.units_enabled = b;
+	emit expressionFormatUpdated(false);
+}
 void PreferencesDialog::binaryPrefixesToggled(bool b) {
 	CALCULATOR->useBinaryPrefixes(b ? 1 : 0);
 	emit resultFormatUpdated();
@@ -584,6 +590,10 @@ void PreferencesDialog::limitImplicitToggled(bool b) {
 	settings->printops.limit_implicit_multiplication = b;
 	emit expressionFormatUpdated(true);
 }
+void PreferencesDialog::unknownsToggled(bool b) {
+	settings->evalops.parse_options.unknowns_enabled = b;
+	emit expressionFormatUpdated(false);
+}
 void PreferencesDialog::titleChanged(int i) {
 	settings->title_type = qobject_cast<QComboBox*>(sender())->itemData(i).toInt();
 	emit titleTypeChanged();
diff --git a/src/preferencesdialog.h b/src/preferencesdialog.h
index 1b57eea..c003082 100644
--- a/src/preferencesdialog.h
+++ b/src/preferencesdialog.h
@@ -53,9 +53,11 @@ class PreferencesDialog : public QDialog {
 		void colorizeToggled(bool);
 		void formatToggled(bool);
 		void parsingModeChanged(int);
+		void unknownsToggled(bool);
 		void temperatureCalculationChanged(int);
 		void exratesToggled(bool);
 		void exratesChanged(int);
+		void unitsToggled(bool);
 		void binaryPrefixesToggled(bool);
 		void readPrecisionToggled(bool);
 		void simplifiedPercentageToggled(bool);