preferencesdialog: Add country flag to language combo box

See issue #182.

CMakeLists.txt

@@ -101,6 +101,7 @@ set(SQLB_FORMS
 
 set(SQLB_RESOURCES
 	src/icons/icons.qrc
+	src/translations/flags/flags.qrc
 )
 
 set(SQLB_MISC

src/PreferencesDialog.cpp

@@ -255,7 +255,6 @@ void PreferencesDialog::removeExtension()
 
 void PreferencesDialog::fillLanguageBox()
 {
-    // Use the path relative to the main executable
     QDir translationsDir(QCoreApplication::applicationDirPath() + "/translations",
                          "sqlb_*.qm");
 
@@ -263,9 +262,17 @@ void PreferencesDialog::fillLanguageBox()
 
     // Add default language
     if (systemLocale.name() == "en_US")
-        ui->languageComboBox->addItem("English (United States) [System Language]","en_US");
+    {
+        ui->languageComboBox->addItem(QIcon(":/flags/en_US"),
+                                      "English (United States) [System Language]",
+                                      "en_US");
+    }
     else
-        ui->languageComboBox->addItem("English (United States) [Default Language]","en_US");
+    {
+        ui->languageComboBox->addItem(QIcon(":/flags/en_US"),
+                                      "English (United States) [Default Language]",
+                                      "en_US");
+    }
 
     foreach(const QFileInfo &file, translationsDir.entryInfoList())
     {
@@ -281,7 +288,7 @@ void PreferencesDialog::fillLanguageBox()
         if (locale == systemLocale)
             language += " [System language]";
 
-        ui->languageComboBox->addItem(language, locale.name());
+        ui->languageComboBox->addItem(QIcon(":/flags/" + locale.name()), language, locale.name());
     }
 
     ui->languageComboBox->model()->sort(0);
@@ -296,9 +303,10 @@ void PreferencesDialog::fillLanguageBox()
 
     QString chosenLanguage = ui->languageComboBox->itemText(index);
     QVariant chosenLocale = ui->languageComboBox->itemData(index);
+    QIcon chosenIcon = ui->languageComboBox->itemIcon(index);
 
     // There's no "move" method, so we remove and add the chosen language again at the top
     ui->languageComboBox->removeItem(index);
-    ui->languageComboBox->insertItem(0, chosenLanguage, chosenLocale);
+    ui->languageComboBox->insertItem(0, chosenIcon, chosenLanguage, chosenLocale);
     ui->languageComboBox->setCurrentIndex(0);
 }

src/PreferencesDialog.ui

@@ -42,7 +42,7 @@
            </property>
            <property name="minimumSize">
             <size>
-             <width>290</width>
+             <width>316</width>
              <height>0</height>
             </size>
            </property>
@@ -83,11 +83,17 @@
           </sizepolicy>
          </property>
          <property name="sizeAdjustPolicy">
-          <enum>QComboBox::AdjustToMinimumContentsLength</enum>
+          <enum>QComboBox::AdjustToContents</enum>
          </property>
          <property name="minimumContentsLength">
           <number>35</number>
          </property>
+         <property name="iconSize">
+          <size>
+           <width>20</width>
+           <height>15</height>
+          </size>
+         </property>
         </widget>
        </item>
       </layout>

src/src.pro

@@ -71,7 +71,8 @@ SOURCES += \
     Application.cpp \
     CipherDialog.cpp
 
-RESOURCES += icons/icons.qrc
+RESOURCES += icons/icons.qrc \
+             translations/flags/flags.qrc
 
 FORMS += \
     MainWindow.ui \

src/translations/flags/flags.qrc

@@ -0,0 +1,9 @@
+<RCC>
+    <qresource prefix="/flags">
+        <file alias="de_DE">de.png</file>
+        <file alias="en_US">us.png</file>
+        <file alias="fr_FR">fr.png</file>
+        <file alias="ru_RU">ru.png</file>
+        <file alias="zh_CN">cn.png</file>
+    </qresource>
+</RCC>