Re: Widget Overlays

[Yevgen Muntyan <muntyan tamu edu>]

Alexander Larsson wrote:
> On Wed, 2007-04-11 at 12:09 +0200, Tim Janik wrote:
>   
> > On Mon, 9 Apr 2007, Matthew Bucknall wrote:
> >     
>
>   
> > > I've considered hovering undecorated 'always above' top-level windows
> > > above my main window, but the icons are not rectangular in shape, so I
> > > need to deal with transparency (I don't know how), and I also need to
> > > control their position relative to the main window with pixel precision
> > > otherwise things are just going to look wonky.
> > >       
> > see gtk_widget_shape_combine_mask():
> >    http://developer.gnome.org/doc/API/2.0/gtk/GtkWidget.html#gtk-widget-shape-combine-mask
> >     
>
> Using a toplevel window seems unnecessary. Why not just make a custom
> container that has two overlapping child windows, put the overlayed
> stuff and the shape mask on the upper window and the rest in the lower
> window.
>   
It's not always easy to do if child widgets have windows, you
have to maintain z-order manually; all code calls
gdk_window_show() whenever it wants to map. For instance
if a child window is a notebook, it will raise children on switching
tabs. And even if you do raise the on-top windows after children
windows are raised you get nasty blinking.

Best regards,
Yevgen