Warn a user if change in preferences requires restart.

--HG--
branch : develop

src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.cpp

@@ -118,14 +118,19 @@ TapePreferencesConfigurationPage::~TapePreferencesConfigurationPage()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void TapePreferencesConfigurationPage::Apply()
+QStringList TapePreferencesConfigurationPage::Apply()
 {
+    QStringList preferences;
     VTapeSettings *settings = qApp->TapeSettings();
     settings->SetOsSeparator(ui->osOptionCheck->isChecked());
 
     settings->SetToolBarStyle(ui->toolBarStyleCheck->isChecked());
 
+    if (settings->GetDarkMode() != ui->darkModeCheck->isChecked())
+    {
         settings->SetDarkMode(ui->darkModeCheck->isChecked());
+        preferences.append(tr("dark mode"));
+    }
 
     if (m_langChanged || m_systemChanged)
     {
@@ -151,6 +156,8 @@ void TapePreferencesConfigurationPage::Apply()
         settings->SetDefSize(ui->defSizeCombo->currentText().toInt());
         m_defGradationChanged = false;
     }
+
+    return preferences;
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.h

@@ -44,7 +44,7 @@ public:
     explicit TapePreferencesConfigurationPage(QWidget *parent = nullptr);
     virtual ~TapePreferencesConfigurationPage();
 
-    void Apply();
+    QStringList Apply();
 protected:
     virtual void changeEvent(QEvent* event) override;
 private:

src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.ui

@@ -263,7 +263,7 @@
            </rect>
           </property>
           <property name="text">
-           <string>Activate dark mode(Restart required)</string>
+           <string>Activate dark mode</string>
           </property>
          </widget>
         </widget>

src/app/tape/dialogs/dialogtapepreferences.cpp

@@ -32,6 +32,7 @@
 #include "configpages/tapepreferencesconfigurationpage.h"
 #include "configpages/tapepreferencespathpage.h"
 
+#include <QMessageBox>
 #include <QPushButton>
 #include <QShowEvent>
 
@@ -124,9 +125,18 @@ void DialogTapePreferences::changeEvent(QEvent *event)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogTapePreferences::Apply()
 {
-    m_configurationPage->Apply();
+    QStringList preferences;
+
+    preferences += m_configurationPage->Apply();
     m_pathPage->Apply();
 
+    if (not preferences.isEmpty())
+    {
+        const QString text = tr("Followed %n option(s) require restart to take effect: %1.", "",
+                                preferences.size()).arg(preferences.join(QStringLiteral(", ")));
+        QMessageBox::information(this, QCoreApplication::applicationName(), text);
+    }
+
     qApp->TapeSettings()->GetOsSeparator() ? setLocale(QLocale()) : setLocale(QLocale::c());
     emit UpdateProperties();
     setResult(QDialog::Accepted);

src/app/valentina/dialogs/configpages/preferencesconfigurationpage.cpp

@@ -171,7 +171,13 @@ QStringList PreferencesConfigurationPage::Apply()
 
     settings->SetOsSeparator(ui->osOptionCheck->isChecked());
     settings->SetToolBarStyle(ui->toolBarStyleCheck->isChecked());
+
+    if (settings->GetDarkMode() != ui->darkModeCheck->isChecked())
+    {
         settings->SetDarkMode(ui->darkModeCheck->isChecked());
+        preferences.append(tr("dark mode"));
+    }
+
     settings->SetFreeCurveMode(ui->checkBoxFreeCurve->isChecked());
     settings->SetDoubleClickZoomFitBestCurrentPP(ui->checkBoxZoomFitBestCurrentPP->isChecked());
 

src/app/valentina/dialogs/configpages/preferencesconfigurationpage.ui

@@ -33,7 +33,7 @@
           <property name="geometry">
            <rect>
             <x>0</x>
-            <y>0</y>
+            <y>-152</y>
             <width>624</width>
             <height>707</height>
            </rect>
@@ -266,7 +266,7 @@
               <item>
                <widget class="QCheckBox" name="darkModeCheck">
                 <property name="text">
-                 <string>Activate dark mode(Restart required)</string>
+                 <string>Activate dark mode</string>
                 </property>
                 <property name="checked">
                  <bool>true</bool>