Add minimal support for ellipsization to wxQt wxStaticText

Set the visible label to the ellipsized value, if necessary.

Also call AutoResizeIfNecessary() for consistency with the other ports.

include/wx/qt/stattext.h

@@ -31,10 +31,13 @@ public:
                 const wxString &name = wxStaticTextNameStr );
 
     virtual void SetLabel(const wxString& label) wxOVERRIDE;
-    virtual wxString GetLabel() const wxOVERRIDE;
 
     virtual QWidget *GetHandle() const wxOVERRIDE;
 
+protected:
+    virtual wxString WXGetVisibleLabel() const wxOVERRIDE;
+    virtual void WXSetVisibleLabel(const wxString& str) wxOVERRIDE;
+
 private:
     QLabel *m_qtLabel;
 

src/qt/stattext.cpp

@@ -59,11 +59,26 @@ bool wxStaticText::Create(wxWindow *parent,
 }
 
 void wxStaticText::SetLabel(const wxString& label)
+{
+    // If the label doesn't really change, avoid flicker by not doing anything.
+    if ( label == m_labelOrig )
+        return;
+
+    // save the label in m_labelOrig with both the markup (if any) and
+    // the mnemonics characters (if any)
+    m_labelOrig = label;
+
+    WXSetVisibleLabel(GetEllipsizedLabel());
+
+    AutoResizeIfNecessary();
+}
+
+void wxStaticText::WXSetVisibleLabel(const wxString& label)
 {
     m_qtLabel->setText( wxQtConvertString( label ) );
 }
 
-wxString wxStaticText::GetLabel() const
+wxString wxStaticText::WXGetVisibleLabel() const
 {
     return wxQtConvertString( m_qtLabel->text() );
 }