add an option for the tabsize in the sql editor (default 4)

src/MainWindow.cpp

@@ -1361,6 +1361,7 @@ void MainWindow::reloadSettings()
     // Read settings
     int prefetch_size = PreferencesDialog::getSettingsValue("db", "prefetchsize").toInt();
     int edit_fontsize = PreferencesDialog::getSettingsValue("editor", "fontsize").toInt();
+    int edit_tabsize = PreferencesDialog::getSettingsValue("editor", "tabsize").toInt();
     int log_fontsize = PreferencesDialog::getSettingsValue("log", "fontsize").toInt();
 
     QFont logfont("Monospace");
@@ -1377,7 +1378,10 @@ void MainWindow::reloadSettings()
 
         QFont font = sqlArea->getEditor()->font();
         font.setPointSize(edit_fontsize);
+        QFontMetrics fm(font);
+        int tabpixelwidth = fm.width(" ") * edit_tabsize;
         sqlArea->getEditor()->setFont(font);
+        sqlArea->getEditor()->setTabStopWidth(tabpixelwidth);
     }
 
     // Set font for SQL logs

src/PreferencesDialog.cpp

@@ -85,6 +85,7 @@ void PreferencesDialog::loadSettings()
         }
     }
     ui->spinEditorFontSize->setValue(getSettingsValue("editor", "fontsize").toInt());
+    ui->spinTabSize->setValue(getSettingsValue("editor", "tabsize").toInt());
     ui->spinLogFontSize->setValue(getSettingsValue("log", "fontsize").toInt());
 
     ui->listExtensions->addItems(getSettingsValue("extensions", "list").toStringList());
@@ -117,6 +118,7 @@ void PreferencesDialog::saveSettings()
         setSettingsValue("syntaxhighlighter", name + "_underline", ui->treeSyntaxHighlighting->topLevelItem(i)->checkState(5) == Qt::Checked);
     }
     setSettingsValue("editor", "fontsize", ui->spinEditorFontSize->value());
+    setSettingsValue("editor", "tabsize", ui->spinTabSize->value());
     setSettingsValue("log", "fontsize", ui->spinLogFontSize->value());
 
     QStringList extList;
@@ -262,6 +264,14 @@ QVariant PreferencesDialog::getSettingsDefaultValue(const QString& group, const
     if((group == "editor" || group == "log") && name == "fontsize")
         return 9;
 
+    if(group == "editor")
+    {
+        if(name == "tabsize")
+        {
+            return 4;
+        }
+    }
+
     // extensions/list?
     if(group == "extensions" && name == "list")
         return QStringList();

src/PreferencesDialog.ui

@@ -585,13 +585,6 @@ QGroupBox::title {
            </property>
           </widget>
          </item>
-         <item row="1" column="1">
-          <widget class="QSpinBox" name="spinLogFontSize">
-           <property name="minimum">
-            <number>1</number>
-           </property>
-          </widget>
-         </item>
          <item row="1" column="0">
           <widget class="QLabel" name="label_7">
            <property name="text">
@@ -602,6 +595,33 @@ QGroupBox::title {
            </property>
           </widget>
          </item>
+         <item row="1" column="1">
+          <widget class="QSpinBox" name="spinLogFontSize">
+           <property name="minimum">
+            <number>1</number>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="0">
+          <widget class="QLabel" name="label_13">
+           <property name="text">
+            <string>Tab size:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="1">
+          <widget class="QSpinBox" name="spinTabSize">
+           <property name="minimum">
+            <number>1</number>
+           </property>
+           <property name="maximum">
+            <number>16</number>
+           </property>
+           <property name="value">
+            <number>4</number>
+           </property>
+          </widget>
+         </item>
         </layout>
        </item>
       </layout>

src/sqltextedit.cpp

@@ -28,6 +28,9 @@ SqlTextEdit::SqlTextEdit(QWidget* parent) :
     font.setPointSize(PreferencesDialog::getSettingsValue("editor", "fontsize").toInt());
     setFont(font);
 
+    QFontMetrics fm(font);
+    setTabStopWidth(fm.width(" ") * PreferencesDialog::getSettingsValue("editor", "tabsize").toInt());
+
     // Create syntax highlighter
     m_syntaxHighlighter = new SQLiteSyntaxHighlighter(document());