Fix addition of unit to parsed expression without unit (when trying to convert to a unit) in exact mode; Use preferred input name for base units in unit edit dialog; Set tooltip for url in history view; Update translations; Update metainfo

README

@@ -12,7 +12,7 @@ Qt, and CLI).
 1. Requirements
 
 * Qt (>= 5.6)
-* libqalculate (>= 4.1.0)
+* libqalculate (>= 4.2.0)
 
 2. Installation
 

data/io.github.Qalculate.qalculate-qt.metainfo.xml

@@ -68,6 +68,36 @@
  </provides>
  <translation type="qt">qalculate-qt</translation>
  <releases>
+  <release version="4.2.0" date="2022-05-25">
+   <description>
+    <p>Changes:</p>
+     <ul>
+      <li>Variable spacing of x values in plot (unless step size is used)</li>
+      <li>Option to plot real and imaginary parts separately (enabled by default)</li>
+      <li>Updated plot() function with arguments for specification of plot options (in any order after the third argument)</li>
+      <li>Polar plot style</li>
+      <li>Ask the user for the desired sinc() variant (unnormalized or normalized)</li>
+      <li>Support for binary-coded decimals (BCD)</li>
+      <li>Show names with underscore capitalized and with underscore removed (with some exceptions)</li>
+      <li>Additional information units</li>
+      <li>Units for volumetric flow rate</li>
+      <li>Tradtional numbers (e.g. dozen, score)</li>
+      <li>Show warning when log() is used with a single argument, and always show second argument of log()</li>
+      <li>Make names with a single character followed by digits case-sensitive with suffix by default</li>
+      <li>Accept more than two arguments in gcd() and lcm()</li>
+      <li>Interpret a single vector argument as a list of arguments if function requires more than one argument</li>
+      <li>Insert minus instead of executing RPN operation, on key press, when last character is e</li>
+      <li>Updated Tab key behaviour, e.g. cycle through completion items on subsequent tab key presses, and traverse items if tab key is unbound</li>
+      <li>Fix segfault when result is a currency with quantity of one</li>
+      <li>Fix copy keyboard shortcut in expression entry</li>
+      <li>Fix limit of floor(), ceil(), and trunc()</li>
+      <li>Fix plotting of derivatives and integrals</li>
+      <li>Fix randpoisson()</li>
+      <li>Fix reactivation of object, after object that caused deactivation is removed</li>
+      <li>Minor bug fixes and feature enhancements</li>
+     </ul>
+   </description>
+  </release>
   <release version="4.1.1" date="2022-04-04">
    <description>
     <p>Changes:</p>

src/expressionedit.cpp

@@ -2462,7 +2462,10 @@ void ExpressionEdit::displayParseStatus(bool update, bool show_tooltip) {
 							CALCULATOR->beginTemporaryStopMessages();
 							MathStructure to_struct(mparse);
 							to_struct.unformat();
+							ApproximationMode abak = settings->evalops.approximation;
+							if(settings->evalops.approximation == APPROXIMATION_EXACT) settings->evalops.approximation = APPROXIMATION_TRY_EXACT;
 							to_struct = CALCULATOR->convertToOptimalUnit(to_struct, settings->evalops, true);
+							settings->evalops.approximation = abak;
 							fix_to_struct_qt(to_struct);
 							if(!to_struct.isZero()) {
 								mparse2 = new MathStructure();

src/historyview.cpp

@@ -28,6 +28,7 @@
 #include <QMimeData>
 #include <QDate>
 #include <QDesktopServices>
+#include <QToolTip>
 #include <QDebug>
 
 #include <libqalculate/qalculate.h>
@@ -300,7 +301,7 @@ void remove_top_border(QString &s_text) {
 }
 
 QString get_uah(QWidget *w) {
-	if((settings->first_time || settings->preferences_version[0] < 4 || (settings->preferences_version[0] == 4 && settings->preferences_version[1] == 0)) && settings->history_answer.empty() && QDate::currentDate().year() == 2022 && QDate::currentDate().month() < 9) {
+	if((settings->first_time || settings->preferences_version[0] < 4 || (settings->preferences_version[0] == 4 && settings->preferences_version[1] == 0)) && settings->history_answer.empty() && QDate::currentDate().year() == 2022 && QDate::currentDate().month() < 8) {
 		QFontMetrics fm(w->font());
 		return QString("<tr><td colspan=\"2\" style=\"text-align:center; padding-top: 6px; padding-bottom: 12px\"><a href=\"https://en.wikipedia.org/wiki/War_crimes_in_the_2022_Russian_invasion_of_Ukraine\"><img src=\":/data/flags/UAH.png\" height=\"%1\"></a></td>").arg(fm.ascent() * 1.5);
 	}
@@ -560,8 +561,14 @@ void HistoryView::addMessages() {
 }
 void HistoryView::mouseMoveEvent(QMouseEvent *e) {
 	QString str = anchorAt(e->pos());
-	if(str.isEmpty()) viewport()->setCursor(Qt::IBeamCursor);
-	else viewport()->setCursor(Qt::PointingHandCursor);
+	if(str.isEmpty()) {
+		viewport()->setCursor(Qt::IBeamCursor);
+	} else {
+		viewport()->setCursor(Qt::PointingHandCursor);
+		if(str == "https://en.wikipedia.org/wiki/War_crimes_in_the_2022_Russian_invasion_of_Ukraine") {
+			QToolTip::showText(mapToGlobal(e->pos()), "Please inform yourself about the war crimes\ncommitted against the Ukrainian people.", this);
+		}
+	}
 	QTextEdit::mouseMoveEvent(e);
 }
 void HistoryView::mouseDoubleClickEvent(QMouseEvent *e) {

src/uniteditdialog.cpp

@@ -349,7 +349,7 @@ void UnitEditDialog::setUnit(Unit *u) {
 		case SUBTYPE_ALIAS_UNIT: {
 			AliasUnit *au = (AliasUnit*) u;
 			mixBox->setChecked(au->mixWithBase() > 0);
-			baseEdit->setText(QString::fromStdString(au->firstBaseUnit()->preferredDisplayName(settings->printops.abbreviate_names, true, false, false, &can_display_unicode_string_function, (void*) baseEdit).formattedName(STRUCT_UNIT, true)));
+			baseEdit->setText(QString::fromStdString(au->firstBaseUnit()->preferredInputName(settings->printops.abbreviate_names, true, false, false, &can_display_unicode_string_function, (void*) baseEdit).formattedName(STRUCT_UNIT, true)));
 			exponentEdit->setValue(au->firstBaseExponent());
 			mbunEdit->setValue(au->mixWithBaseMinimum() > 1 ? au->mixWithBaseMinimum() : 1);
 			priorityEdit->setValue(au->mixWithBase());