Wrap label if necessary in wxInfoBar in wxGTK

Also update the sample to test showing an overlong message in wxInfoBar.

Closes https://github.com/wxWidgets/wxWidgets/pull/1443

See #14121.

samples/dialogs/dialogs.cpp

@@ -159,6 +159,7 @@ wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
 #endif // wxUSE_LOG_DIALOG
 #if wxUSE_INFOBAR
     EVT_MENU(DIALOGS_INFOBAR_SIMPLE,                MyFrame::InfoBarSimple)
+    EVT_MENU(DIALOGS_INFOBAR_SIMPLE_WRAPPED,        MyFrame::InfoBarSimpleWrapped)
     EVT_MENU(DIALOGS_INFOBAR_ADVANCED,              MyFrame::InfoBarAdvanced)
 #endif // wxUSE_INFOBAR
 
@@ -530,6 +531,7 @@ bool MyApp::OnInit()
 
     #if wxUSE_INFOBAR
        info_menu->Append(DIALOGS_INFOBAR_SIMPLE, "Simple &info bar\tCtrl-I");
+       info_menu->Append(DIALOGS_INFOBAR_SIMPLE_WRAPPED, "Simple info bar with wrapped text");
        info_menu->Append(DIALOGS_INFOBAR_ADVANCED, "&Advanced info bar\tShift-Ctrl-I");
     #endif // wxUSE_INFOBAR
 
@@ -890,6 +892,11 @@ void MyFrame::InfoBarSimple(wxCommandEvent& WXUNUSED(event))
                      );
 }
 
+void MyFrame::InfoBarSimpleWrapped(wxCommandEvent &WXUNUSED(event))
+{
+    m_infoBarSimple->ShowMessage( "This is very very long message to try the label wrapping on the info bar" );
+}
+
 void MyFrame::InfoBarAdvanced(wxCommandEvent& WXUNUSED(event))
 {
     m_infoBarAdvanced->ShowMessage("Sorry, it didn't work out.", wxICON_WARNING);

samples/dialogs/dialogs.h

@@ -391,6 +391,7 @@ public:
 
 #if wxUSE_INFOBAR
     void InfoBarSimple(wxCommandEvent& event);
+    void InfoBarSimpleWrapped(wxCommandEvent &event);
     void InfoBarAdvanced(wxCommandEvent& event);
 #endif // wxUSE_INFOBAR
 
@@ -598,6 +599,7 @@ enum
     DIALOGS_NUM_ENTRY,
     DIALOGS_LOG_DIALOG,
     DIALOGS_INFOBAR_SIMPLE,
+    DIALOGS_INFOBAR_SIMPLE_WRAPPED,
     DIALOGS_INFOBAR_ADVANCED,
     DIALOGS_MODAL,
     DIALOGS_MODELESS,

src/generic/infobar.cpp

@@ -236,7 +236,7 @@ void wxInfoBarGeneric::ShowMessage(const wxString& msg, int flags)
     // notice the use of EscapeMnemonics() to ensure that "&" come through
     // correctly
     m_text->SetLabel(wxControl::EscapeMnemonics(msg));
-
+    m_text->Wrap( GetClientSize().GetWidth() );
 
     // then show this entire window if not done yet
     if ( !IsShown() )

src/gtk/infobar.cpp

@@ -196,7 +196,11 @@ void wxInfoBar::ShowMessage(const wxString& msg, int flags)
     if ( wxGTKImpl::ConvertMessageTypeFromWX(flags, &type) )
         gtk_info_bar_set_message_type(GTK_INFO_BAR(m_widget), type);
     gtk_label_set_text(GTK_LABEL(m_impl->m_label), wxGTK_CONV(msg));
-
+    gtk_label_set_line_wrap(GTK_LABEL(m_impl->m_label), TRUE );
+#if GTK_CHECK_VERSION(2,10,0)
+    if( wx_is_at_least_gtk2( 10 ) )
+        gtk_label_set_line_wrap_mode(GTK_LABEL(m_impl->m_label), PANGO_WRAP_WORD);
+#endif
     if ( !IsShown() )
         Show();