Editor: Support floating point values for tab stop

Task-number: QTCREATORBUG-833

Change-Id: I76a4b69d6e9402f045a98712531475aff5e8d0ac
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/src/plugins/texteditor/basetexteditor.cpp b/src/plugins/texteditor/basetexteditor.cpp
index 5733278104..23661a796f 100644
--- a/src/plugins/texteditor/basetexteditor.cpp
+++ b/src/plugins/texteditor/basetexteditor.cpp
@@ -5482,8 +5482,13 @@ void BaseTextEditorWidget::setFontSettings(const TextEditor::FontSettings &fs)
 void BaseTextEditorWidget::setTabSettings(const TabSettings &ts)
 {
     d->m_document->setTabSettings(ts);
-    int charWidth = QFontMetrics(font()).width(QChar(' '));
-    setTabStopWidth(charWidth * ts.m_tabSize);
+
+    // Although the tab stop is stored as qreal the API from QPlainTextEdit only allows it
+    // to be set as an int. A work around is to access directly the QTextOption.
+    qreal charWidth = QFontMetricsF(font()).width(QChar(' '));
+    QTextOption option = document()->defaultTextOption();
+    option.setTabStop(charWidth * ts.m_tabSize);
+    document()->setDefaultTextOption(option);
 }
 
 void BaseTextEditorWidget::setDisplaySettings(const DisplaySettings &ds)