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avoid GDK assertion "impl_window->update_freeze_count > 0" on Ubuntu when enabling frozen window

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closes #16795


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@78474 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Paul Cornett
2015-02-11 18:05:15 +00:00
parent e19a2263bd
commit 66780715c0
1 changed files with 39 additions and 0 deletions
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39
src/gtk/window.cpp
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@@ -3267,13 +3267,52 @@ bool wxWindowGTK::Show( bool show )
return true;
}
static bool GetFrozen(wxWindowGTK* win, wxVector<wxWindowGTK*>& vector)
{
bool scroll =
GTK_IS_SCROLLED_WINDOW(win->m_widget) || GTK_IS_SCROLLBAR(win->m_widget);
if (win->IsFrozen())
vector.push_back(win);
wxWindowList& children = win->GetChildren();
for (wxWindowList::iterator i = children.begin(); i != children.end(); ++i)
{
if (GetFrozen(*i, vector))
scroll = true;
}
return scroll;
}
void wxWindowGTK::DoEnable( bool enable )
{
wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
wxVector<wxWindowGTK*> frozen;
if (enable)
{
// Ubuntu overlay scrollbar can cause GdkWindow.impl_window to change
// (by indirectly invoking gdk_window_ensure_native()), which messes up
// the freeze count. Avoid this by temporarily un-freezing window hierarchy.
if (GetFrozen(this, frozen))
{
for (unsigned i = frozen.size(); i--;)
frozen[i]->DoThaw();
}
else
frozen.clear();
}
gtk_widget_set_sensitive( m_widget, enable );
if (m_wxwindow && (m_wxwindow != m_widget))
gtk_widget_set_sensitive( m_wxwindow, enable );
if (enable)
{
for (unsigned i = frozen.size(); i--;)
frozen[i]->DoFreeze();
}
}
int wxWindowGTK::GetCharHeight() const