Add multi-line input method hint

Enabler for input on Android.

Change-Id: I44670b95b35f773814125c5d35c67e9713567813
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

src/corelib/global/qnamespace.h

@@ -1305,6 +1305,8 @@ public:
 
         ImhPreferLatin = 0x200,
 
+        ImhMultiLine = 0x400,
+
         ImhDigitsOnly = 0x10000,
         ImhFormattedNumbersOnly = 0x20000,
         ImhUppercaseOnly = 0x40000,

src/corelib/global/qnamespace.qdoc

@@ -2330,6 +2330,8 @@
     \value ImhTime                   The text editor functions as a time field.
     \value ImhPreferLatin            Latin characters are preferred (but not required).
 
+    \value ImhMultiLine              Multiple lines can be entered into the text field.
+
     Flags that restrict input (exclusive flags):
 
     \value ImhDigitsOnly             Only digits are allowed.

src/widgets/widgets/qtextedit.cpp

@@ -182,7 +182,7 @@ void QTextEditPrivate::init(const QString &html)
     q->setFocusPolicy(Qt::WheelFocus);
     q->setAttribute(Qt::WA_KeyCompression);
     q->setAttribute(Qt::WA_InputMethodEnabled);
-
+    q->setInputMethodHints(Qt::ImhMultiLine);
 #ifndef QT_NO_CURSOR
     viewport->setCursor(Qt::IBeamCursor);
 #endif