[Misc] Ensure the program can run correctly on Ubuntu

- Fix loottablefunction.ui storing wrong infomation, which caused
ExtendedTableWidget not to work correctly.

Author: IoeCmcomc

src/loottablefunction.ui

@@ -755,22 +755,14 @@
       <widget class="QWidget" name="set_banner_pattern">
        <layout class="QVBoxLayout" name="verticalLayout">
         <item>
-         <widget class="ExtendedTableWidget" name="setPattern_table" native="true">
-          <property name="columnTitles" stdset="0">
+         <widget class="ExtendedTableWidget" name="setPattern_table">
+          <property name="columnTitles">
            <stringlist>
             <string>Pattern</string>
             <string>Color</string>
            </stringlist>
           </property>
           <widget class="QFrame" name="container_2">
-           <property name="geometry">
-            <rect>
-             <x>0</x>
-             <y>0</y>
-             <width>100</width>
-             <height>30</height>
-            </rect>
-           </property>
            <layout class="QFormLayout" name="formLayout_13">
             <item row="0" column="0">
              <widget class="QLabel" name="label_39">
@@ -876,7 +868,7 @@
         </item>
         <item row="0" column="1">
          <widget class="NumberProvider" name="setCount_countInput">
-          <property name="minLimit" stdset="0">
+          <property name="minLimit">
            <number>-2147483647</number>
           </property>
          </widget>
@@ -917,22 +909,14 @@
       <widget class="QWidget" name="set_enchantments">
        <layout class="QGridLayout" name="gridLayout_11">
         <item row="0" column="0">
-         <widget class="ExtendedTableWidget" name="setEnchant_table" native="true">
-          <property name="columnTitles" stdset="0">
+         <widget class="ExtendedTableWidget" name="setEnchant_table">
+          <property name="columnTitles">
            <stringlist>
             <string>Enchantment</string>
             <string>Level</string>
            </stringlist>
           </property>
           <widget class="QFrame" name="container">
-           <property name="geometry">
-            <rect>
-             <x>0</x>
-             <y>0</y>
-             <width>100</width>
-             <height>30</height>
-            </rect>
-           </property>
            <layout class="QFormLayout" name="formLayout_6">
             <item row="0" column="0">
              <widget class="QLabel" name="label_37">
@@ -1416,6 +1400,7 @@
    <class>ExtendedTableWidget</class>
    <extends>QWidget</extends>
    <header>extendedtablewidget.h</header>
+   <addpagemethod>setContainer</addpagemethod>
    <container>1</container>
   </customwidget>
   <customwidget>

src/main.cpp

@@ -17,18 +17,22 @@ int main(int argc, char *argv[]) {
 
     /*Q_INIT_RESOURCE(application); */
 
-    QIcon::setFallbackSearchPaths(QIcon::fallbackSearchPaths() << QStringLiteral(
-                                      ":/icon"));
-    QIcon::setFallbackThemeName(QStringLiteral("default"));
-    if (QIcon::themeName().isEmpty())
-        QIcon::setThemeName(QStringLiteral("default"));
-
     QApplication a(argc, argv);
     qInfo() << "Appication started.";
 
     QFontDatabase::addApplicationFont(QStringLiteral(
                                           ":/fonts/Monocraft/Monocraft.otf"));
 
+    QIcon::setFallbackSearchPaths(QIcon::fallbackSearchPaths() << QStringLiteral(
+                                      ":/icon"));
+    QIcon::setFallbackThemeName(QStringLiteral("default"));
+    if (QIcon::themeName().isEmpty() || !QIcon::hasThemeIcon("list-add"))
+        QIcon::setThemeName(QStringLiteral("default"));
+    if (!QIcon::hasThemeIcon("list-add")) {
+        QIcon::setThemeSearchPaths({":/icons"});
+        QIcon::setThemeName(QStringLiteral("default"));
+    }
+
     QCommandLineParser parser;
     parser.setApplicationDescription(QCoreApplication::applicationName());
     parser.addHelpOption();