GUI: Reject invalid fonts

Do not set fonts that do not exist, or are not fixed width.
equalsraf · May 7, 2015 · 487e839 · 487e839
1 parent 445ac31
commit 487e839
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/gui/shell.cpp b/src/gui/shell.cpp
@@ -90,6 +90,15 @@ bool Shell::setGuiFont(const QString& fdesc)
 		}
 	}
 
+	QFontInfo fi(f);
+	if (fi.family().compare(f.family(), Qt::CaseInsensitive) != 0 &&
+		f.family().compare("Monospace", Qt::CaseInsensitive) != 0) {
+		return false;
+	}
+	if ( !fi.fixedPitch() ) {
+		return false;
+	}
+
 	m_font = f;
 	m_fm = new QFontMetrics(m_font);