Add markup support to generic wxStaticText implementation.

wxMarkupText allows to easily support markup in the controls that we draw
ourselves so use it in wxGenericStaticText to have a possibility to use
markup on all platforms, even those where there is no native markup support in
wxStaticText itself.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67067 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/stattextg.h

@@ -22,7 +22,7 @@
 class WXDLLIMPEXP_CORE wxGenericStaticText : public wxStaticTextBase
 {
 public:
-    wxGenericStaticText() { }
+    wxGenericStaticText() { Init(); }
 
     wxGenericStaticText(wxWindow *parent,
                  wxWindowID id,
@@ -32,6 +32,8 @@ public:
                  long style = 0,
                  const wxString& name = wxStaticTextNameStr)
     {
+        Init();
+
         Create(parent, id, label, pos, size, style, name);
     }
 
@@ -43,6 +45,8 @@ public:
                 long style = 0,
                 const wxString& name = wxStaticTextNameStr);
 
+    virtual ~wxGenericStaticText();
+
 
     // overridden base class virtual methods
     virtual void SetLabel(const wxString& label);
@@ -56,12 +60,30 @@ protected:
 
     void DoSetSize(int x, int y, int width, int height, int sizeFlags);
 
+#if wxUSE_MARKUP
+    virtual bool DoSetLabelMarkup(const wxString& markup);
+#endif // wxUSE_MARKUP
+
 private:
+    void Init()
+    {
+#if wxUSE_MARKUP
+        m_markupText = NULL;
+#endif // wxUSE_MARKUP
+    }
+
     void OnPaint(wxPaintEvent& event);
 
+    void DoDrawLabel(wxDC& dc, const wxRect& rect);
+
+    // These fields are only used if m_markupText == NULL.
     wxString m_label;
     int m_mnemonic;
 
+#if wxUSE_MARKUP
+    class wxMarkupText *m_markupText;
+#endif // wxUSE_MARKUP
+
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGenericStaticText)
 };