Li, Yes, it is the toplevel window (role: frame). I had this feeling of deja vu when I saw these negative (x, y) coordinates -- like I'd read somewhere in Gtk documentation that they did this sometimes.
-Sam -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, January 08, 2009 7:02 PM To: Quiring, Sam Cc: [email protected] Subject: Re: [g-a-devel] SPI_COORD_TYPE_WINDOW Hi Sam, Is the window you are getting extents from out of the toplevel window? Basically GAIL get these values from gdk by gdk_window_get_frame_extents. Li Quiring, Sam wrote: > Greetings, > > When I call AccessibleComponent_getExtents with SPI_COORD_TYPE_WINDOW, > some of the windows return a negative x and y coordinate, typically > (x, y) = (-5, -24). I'm comparing these values to what I get back > from XGetWindowAttributes() for the same window. X returns (5, 24). > > When the x and y coordinates are negative, the accessible width is 10 > more than X's width and the accessible's height is 29 more than X's > height. I retrieved the _NET_FRAME_EXTENTS of the X window and I get > these values: > > left: 5 > right: 5 > top: 5 > bottom: 24 > > Subtracting X's (left + right) from the accessible width yields the X > windows's width. > Subtracting (top + bottom) from the accessible height yields the X > window's height. > > For all the windows I've tested so far (a total of 5), I get this > relationship: > > If the accessible (x, y) coordinates are positive, then the (x,y) and > (width, height) of the accessible window will match the corresponding > values for the corresponding X window. > > if the accessible (x, y) coordinates are negative, then make these > transformations: > > new-x = -x > new-y = -y > > new-width = width - (left + right) > new-height = height - (top + bottom) > > then (new-x, new-y) matches the X window (x, y) and (new-width, > new-height) = the X window (width, height). > > Do these relationships always hold? If so, Is this documented somewhere? > > Thanks. > > -Sam > ---------------------------------------------------------------------- > -- > > _______________________________________________ > Gnome-accessibility-devel mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel > _______________________________________________ Gnome-accessibility-devel mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel
