Inform a user about options those require restart to take effect.

--HG--
branch : develop

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

@@ -33,7 +33,6 @@
 
 #include <QDir>
 #include <QDirIterator>
-#include <QMessageBox>
 #include <QTimer>
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -121,8 +120,9 @@ PreferencesConfigurationPage::~PreferencesConfigurationPage()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void PreferencesConfigurationPage::Apply()
+QStringList PreferencesConfigurationPage::Apply()
 {
+    QStringList preferences;
     VSettings *settings = qApp->ValentinaSettings();
     settings->SetAutosaveState(ui->autoSaveCheck->isChecked());
     settings->SetAutosaveTime(ui->autoTime->value());
@@ -153,9 +153,7 @@ void PreferencesConfigurationPage::Apply()
         const QString unit = qvariant_cast<QString>(ui->unitCombo->currentData());
         settings->SetUnit(unit);
         m_unitChanged = false;
-        const QString text = tr("The Default unit has been updated and will be used as the default for the next "
-                                "pattern you create.");
-        QMessageBox::information(this, QCoreApplication::applicationName(), text);
+        preferences.append(tr("default unit"));
     }
     if (m_labelLangChanged)
     {
@@ -163,6 +161,7 @@ void PreferencesConfigurationPage::Apply()
         settings->SetLabelLanguage(locale);
         m_labelLangChanged = false;
     }
+    return preferences;
 }
 
 //---------------------------------------------------------------------------------------------------------------------

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

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

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

@@ -55,7 +55,7 @@ PreferencesPathPage::~PreferencesPathPage()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void PreferencesPathPage::Apply()
+QStringList PreferencesPathPage::Apply()
 {
     VSettings *settings = qApp->ValentinaSettings();
     settings->SetPathIndividualMeasurements(ui->pathTable->item(0, 1)->text());
@@ -64,6 +64,8 @@ void PreferencesPathPage::Apply()
     settings->SetPathLayout(ui->pathTable->item(3, 1)->text());
     settings->SetPathTemplate(ui->pathTable->item(4, 1)->text());
     settings->SetPathLabelTemplate(ui->pathTable->item(5, 1)->text());
+
+    return QStringList(); // No changes those require restart.
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/valentina/dialogs/configpages/preferencespathpage.h

@@ -44,7 +44,7 @@ public:
     explicit PreferencesPathPage(QWidget *parent = nullptr);
     virtual ~PreferencesPathPage();
 
-    void Apply();
+    QStringList Apply();
 
 private slots:
     void DefaultPath();

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

@@ -113,13 +113,29 @@ PreferencesPatternPage::~PreferencesPatternPage()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void PreferencesPatternPage::Apply()
+QStringList PreferencesPatternPage::Apply()
 {
+    QStringList preferences;
+
     VSettings *settings = qApp->ValentinaSettings();
 
     // Scene antialiasing
-    settings->SetGraphicalOutput(ui->graphOutputCheck->isChecked());
-    settings->SetOpenGLRender(ui->checkBoxOpenGLRender->isChecked());
+    if (settings->GetGraphicalOutput() != ui->graphOutputCheck->isChecked())
+    {
+        if (qApp->getSceneView()->IsOpenGLRender())
+        {
+            preferences.append(tr("antialiasing"));
+        }
+
+        settings->SetGraphicalOutput(ui->graphOutputCheck->isChecked());
+    }
+
+    if (settings->IsOpenGLRender() != ui->checkBoxOpenGLRender->isChecked())
+    {
+        preferences.append(tr("scene render"));
+        settings->SetOpenGLRender(ui->checkBoxOpenGLRender->isChecked());
+    }
+
     settings->SetCurveApproximationScale(ui->doubleSpinBoxCurveApproximation->value());
     settings->SetLineWidth(UnitConvertor(ui->doubleSpinBoxLineWidth->value(), m_oldLineUnit, Unit::Mm));
     qApp->getSceneView()->SetAntialiasing(ui->graphOutputCheck->isChecked());
@@ -149,6 +165,8 @@ void PreferencesPatternPage::Apply()
 
     settings->SetKnownMaterials(m_knownMaterials);
     settings->SetRememberPatternMaterials(ui->checkBoxRemeberPatternMaterials->isChecked());
+
+    return preferences;
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/valentina/dialogs/configpages/preferencespatternpage.h

@@ -47,7 +47,7 @@ public:
     explicit PreferencesPatternPage(QWidget *parent = nullptr);
     virtual ~PreferencesPatternPage();
 
-    void Apply();
+    QStringList Apply();
     void InitDefaultSeamAllowance();
 
 private slots:

src/app/valentina/dialogs/dialogpreferences.cpp

@@ -33,6 +33,7 @@
 #include "configpages/preferencespatternpage.h"
 #include "configpages/preferencespathpage.h"
 
+#include <QMessageBox>
 #include <QPushButton>
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -122,9 +123,19 @@ void DialogPreferences::PageChanged(QListWidgetItem *current, QListWidgetItem *p
 //---------------------------------------------------------------------------------------------------------------------
 void DialogPreferences::Apply()
 {
-    m_configurePage->Apply();
-    m_patternPage->Apply();
-    m_pathPage->Apply();
+    QStringList preferences;
+
+    preferences += m_configurePage->Apply();
+    preferences += m_patternPage->Apply();
+    preferences += 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(", "));
+        QMessageBox::information(this, QCoreApplication::applicationName(), text);
+    }
+
 
     m_patternPage->InitDefaultSeamAllowance();
 

src/libs/vwidgets/vmaingraphicsview.cpp

@@ -376,7 +376,7 @@ VMainGraphicsView::VMainGraphicsView(QWidget *parent)
         setViewport(viewport);
     #else
         setViewport(new QGLWidget(QGLFormat(QGL::DoubleBuffer|QGL::SampleBuffers)));
-    #endif          
+    #endif
     }
 
     zoom = new GraphicsViewZoom(this);
@@ -633,8 +633,24 @@ void VMainGraphicsView::SetAntialiasing(bool value)
 {
     setRenderHint(QPainter::Antialiasing, value);
     setRenderHint(QPainter::SmoothPixmapTransform, value);
+}
 
-
+//---------------------------------------------------------------------------------------------------------------------
+bool VMainGraphicsView::IsOpenGLRender() const
+{
+#if QT_VERSION >= QT_VERSION_CHECK(5, 4, 0)
+    QOpenGLWidget *viewport = qobject_cast<QOpenGLWidget *>(this->viewport());
+#else
+    QGLWidget *viewport = qobject_cast<QGLWidget *>(this->viewport());
+#endif
+    if (viewport)
+    {
+        return true;
+    }
+    else
+    {
+        return false;
+    }
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vwidgets/vmaingraphicsview.h

@@ -132,6 +132,8 @@ public:
 
     void SetAntialiasing(bool value);
 
+    bool IsOpenGLRender() const;
+
 signals:
     /**
      * @brief MouseRelease help catch mouse release event.