static gboolean
test_case_check_xserver_stacking (TestCase *test,
GError **error)
{
MetaDisplay *display = meta_get_display ();
GString *local_string = g_string_new (NULL);
GString *x11_string = g_string_new (NULL);
int i;
guint64 *windows;
int n_windows;
meta_stack_tracker_get_stack (display->screen->stack_tracker, &windows, &n_windows);
for (i = 0; i < n_windows; i++)
{
if (META_STACK_ID_IS_X11 (windows[i]))
{
if (local_string->len > 0)
g_string_append_c (local_string, ' ');
g_string_append_printf (local_string, "%#lx", (Window)windows[i]);
}
}
Window root;
Window parent;
Window *children;
unsigned int n_children;
XQueryTree (display->xdisplay,
meta_screen_get_xroot (display->screen),
&root, &parent, &children, &n_children);
for (i = 0; i < (int)n_children; i++)
{
if (x11_string->len > 0)
g_string_append_c (x11_string, ' ');
g_string_append_printf (x11_string, "%#lx", (Window)children[i]);
}
if (strcmp (x11_string->str, local_string->str) != 0)
g_set_error (error, TEST_RUNNER_ERROR, TEST_RUNNER_ERROR_ASSERTION_FAILED,
"xserver stacking: x11='%s', local='%s'",
x11_string->str, local_string->str);
XFree (children);
g_string_free (local_string, TRUE);
g_string_free (x11_string, TRUE);
return *error == NULL;
}
/**
* meta_stack_tracker_sync_stack:
* @tracker: a #MetaStackTracker
*
* Informs the compositor of the current stacking order of windows,
* based on the predicted view maintained by the #MetaStackTracker.
*/
void
meta_stack_tracker_sync_stack (MetaStackTracker *tracker)
{
GList *meta_windows;
Window *windows;
int n_windows;
int i;
if (tracker->sync_stack_later)
{
meta_later_remove (tracker->sync_stack_later);
tracker->sync_stack_later = 0;
}
meta_stack_tracker_get_stack (tracker, &windows, &n_windows);
meta_windows = NULL;
for (i = 0; i < n_windows; i++)
{
MetaWindow *meta_window;
meta_window = meta_display_lookup_x_window (tracker->screen->display,
windows[i]);
/* When mapping back from xwindow to MetaWindow we have to be a bit careful;
* children of the root could include unmapped windows created by toolkits
* for internal purposes, including ones that we have registered in our
* XID => window table. (Wine uses a toplevel for _NET_WM_USER_TIME_WINDOW;
* see window-prop.c:reload_net_wm_user_time_window() for registration.)
*/
if (meta_window &&
(windows[i] == meta_window->xwindow ||
(meta_window->frame && windows[i] == meta_window->frame->xwindow)))
meta_windows = g_list_prepend (meta_windows, meta_window);
}
if (tracker->screen->display->compositor)
meta_compositor_sync_stack (tracker->screen->display->compositor,
tracker->screen,
meta_windows);
g_list_free (meta_windows);
meta_screen_restacked (tracker->screen);
}
static gboolean
test_case_assert_stacking (TestCase *test,
char **expected_windows,
int n_expected_windows,
GError **error)
{
MetaDisplay *display = meta_get_display ();
guint64 *windows;
int n_windows;
GString *stack_string = g_string_new (NULL);
GString *expected_string = g_string_new (NULL);
int i;
meta_stack_tracker_get_stack (display->screen->stack_tracker, &windows, &n_windows);
for (i = 0; i < n_windows; i++)
{
MetaWindow *window = meta_display_lookup_stack_id (display, windows[i]);
if (window != NULL && window->title)
{
/* See comment in meta_ui_new() about why the dummy window for GTK+ theming
* is managed as a MetaWindow.
*/
if (META_STACK_ID_IS_X11 (windows[i]) &&
meta_ui_window_is_dummy (display->screen->ui, windows[i]))
continue;
if (stack_string->len > 0)
g_string_append_c (stack_string, ' ');
if (g_str_has_prefix (window->title, "test/"))
g_string_append (stack_string, window->title + 5);
else
g_string_append_printf (stack_string, "(%s)", window->title);
}
else if (windows[i] == display->screen->guard_window)
{
if (stack_string->len > 0)
g_string_append_c (stack_string, ' ');
g_string_append_c (stack_string, '|');
}
}
for (i = 0; i < n_expected_windows; i++)
{
if (expected_string->len > 0)
g_string_append_c (expected_string, ' ');
g_string_append (expected_string, expected_windows[i]);
}
/* Don't require '| ' as a prefix if there are no hidden windows - we
* remove the prefix from the actual string instead of adding it to the
* expected string for clarity of the error message
*/
if (index (expected_string->str, '|') == NULL && stack_string->str[0] == '|')
{
g_string_erase (stack_string,
0, stack_string->str[1] == ' ' ? 2 : 1);
}
if (strcmp (expected_string->str, stack_string->str) != 0)
{
g_set_error (error, TEST_RUNNER_ERROR, TEST_RUNNER_ERROR_ASSERTION_FAILED,
"stacking: expected='%s', actual='%s'",
expected_string->str, stack_string->str);
}
g_string_free (stack_string, TRUE);
g_string_free (expected_string, TRUE);
return *error == NULL;
}
/*
* This function is used to avoid raising a window above popup
* menus and other such things.
*
* The key to the operation of this function is that we are expecting
* at most one window to be added at a time. If xwindow is newly added,
* then its own stack position will be too high (the frame window
* is created at the top of the stack), but if we ignore xwindow,
* then the *next* managed window in the stack will be a window that
* we've already stacked.
*
* We could generalize this and remove the assumption that windows
* are added one at a time by keeping an explicit ->stacked flag in
* MetaWindow.
*
* An alternate approach would be to reverse the stacking algorithm to
* work by placing each window above the others, and start by lowering
* a window to the bottom (instead of the current way, which works by
* placing each window below another and starting with a raise)
*/
static void
raise_window_relative_to_managed_windows (MetaScreen *screen,
Window xwindow)
{
Window *children;
int n_children;
int i;
meta_stack_tracker_get_stack (screen->stack_tracker,
&children, &n_children);
/* Children are in order from bottom to top. We want to
* find the topmost managed child, then configure
* our window to be above it.
*/
i = n_children - 1;
while (i >= 0)
{
if (children[i] == xwindow)
{
/* Do nothing. This means we're already the topmost managed
* window, but it DOES NOT mean we are already just above
* the topmost managed window. This is important because if
* an override redirect window is up, and we map a new
* managed window, the new window is probably above the old
* popup by default, and we want to push it below that
* popup. So keep looking for a sibling managed window
* to be moved below.
*/
}
else
{
MetaWindow *other = meta_display_lookup_x_window (screen->display,
children[i]);
if (other != NULL && !other->override_redirect && !other->unmanaging)
{
XWindowChanges changes;
/* children[i] is the topmost managed child */
meta_topic (META_DEBUG_STACK,
"Moving 0x%lx above topmost managed child window 0x%lx\n",
xwindow, children[i]);
changes.sibling = children[i];
changes.stack_mode = Above;
meta_error_trap_push (screen->display);
meta_stack_tracker_record_raise_above (screen->stack_tracker,
xwindow,
children[i],
XNextRequest (screen->display->xdisplay));
XConfigureWindow (screen->display->xdisplay,
xwindow,
CWSibling | CWStackMode,
&changes);
meta_error_trap_pop (screen->display);
break;
}
}
--i;
}
if (i < 0)
{
/* No sibling to use, just lower ourselves to the bottom
* to be sure we're below any override redirect windows.
*/
meta_error_trap_push (screen->display);
meta_stack_tracker_record_lower (screen->stack_tracker,
xwindow,
XNextRequest (screen->display->xdisplay));
XLowerWindow (screen->display->xdisplay,
xwindow);
meta_error_trap_pop (screen->display);
}
}