static gboolean
window_place_centered (MetaWindow *window)
{
MetaWindowType type;
type = window->type;
return (type == META_WINDOW_DIALOG ||
type == META_WINDOW_MODAL_DIALOG ||
type == META_WINDOW_SPLASHSCREEN ||
(type == META_WINDOW_NORMAL && meta_prefs_get_center_new_windows ()));
}
void
meta_window_place (MetaWindow *window,
MetaFrameGeometry *fgeom,
int x,
int y,
int *new_x,
int *new_y)
{
GList *windows;
const MetaXineramaScreenInfo *xi;
/* frame member variables should NEVER be used in here, only
* MetaFrameGeometry. But remember fgeom == NULL
* for undecorated windows. Also, this function should
* NEVER have side effects other than computing the
* placement coordinates.
*/
meta_topic (META_DEBUG_PLACEMENT, "Placing window %s\n", window->desc);
windows = NULL;
switch (window->type)
{
/* Run placement algorithm on these. */
case META_WINDOW_NORMAL:
case META_WINDOW_DIALOG:
case META_WINDOW_MODAL_DIALOG:
case META_WINDOW_SPLASHSCREEN:
break;
/* Assume the app knows best how to place these, no placement
* algorithm ever (other than "leave them as-is")
*/
case META_WINDOW_DESKTOP:
case META_WINDOW_DOCK:
case META_WINDOW_TOOLBAR:
case META_WINDOW_MENU:
case META_WINDOW_UTILITY:
goto done_no_constraints;
}
if (meta_prefs_get_disable_workarounds ())
{
switch (window->type)
{
/* Only accept USPosition on normal windows because the app is full
* of shit claiming the user set -geometry for a dialog or dock
*/
case META_WINDOW_NORMAL:
if (window->size_hints.flags & USPosition)
{
/* don't constrain with placement algorithm */
meta_topic (META_DEBUG_PLACEMENT,
"Honoring USPosition for %s instead of using placement algorithm\n", window->desc);
goto done;
}
break;
/* Ignore even USPosition on dialogs, splashscreen */
case META_WINDOW_DIALOG:
case META_WINDOW_MODAL_DIALOG:
case META_WINDOW_SPLASHSCREEN:
break;
/* Assume the app knows best how to place these. */
case META_WINDOW_DESKTOP:
case META_WINDOW_DOCK:
case META_WINDOW_TOOLBAR:
case META_WINDOW_MENU:
case META_WINDOW_UTILITY:
if (window->size_hints.flags & PPosition)
{
meta_topic (META_DEBUG_PLACEMENT,
"Not placing non-normal non-dialog window with PPosition set\n");
goto done_no_constraints;
}
break;
}
}
else
{
/* workarounds enabled */
if ((window->size_hints.flags & PPosition) ||
(window->size_hints.flags & USPosition))
{
meta_topic (META_DEBUG_PLACEMENT,
"Not placing window with PPosition or USPosition set\n");
avoid_being_obscured_as_second_modal_dialog (window, fgeom, &x, &y);
goto done_no_constraints;
}
}
if ((window->type == META_WINDOW_DIALOG ||
window->type == META_WINDOW_MODAL_DIALOG) &&
window->xtransient_for != None)
{
/* Center horizontally, at top of parent vertically */
MetaWindow *parent;
parent =
meta_display_lookup_x_window (window->display,
window->xtransient_for);
if (parent)
{
int w;
meta_window_get_position (parent, &x, &y);
w = parent->rect.width;
/* center of parent */
x = x + w / 2;
/* center of child over center of parent */
x -= window->rect.width / 2;
/* "visually" center window over parent, leaving twice as
* much space below as on top.
*/
y += (parent->rect.height - window->rect.height)/3;
/* put top of child's frame, not top of child's client */
if (fgeom)
y += fgeom->top_height;
meta_topic (META_DEBUG_PLACEMENT, "Centered window %s over transient parent\n",
window->desc);
avoid_being_obscured_as_second_modal_dialog (window, fgeom, &x, &y);
goto done;
}
}
/* FIXME UTILITY with transient set should be stacked up
* on the sides of the parent window or something.
*/
if (window->type == META_WINDOW_DIALOG ||
window->type == META_WINDOW_MODAL_DIALOG ||
window->type == META_WINDOW_SPLASHSCREEN)
{
/* Center on current xinerama (i.e. on current monitor) */
int w, h;
/* Warning, this function is a round trip! */
xi = meta_screen_get_current_xinerama (window->screen);
w = xi->rect.width;
h = xi->rect.height;
x = (w - window->rect.width) / 2;
y = (h - window->rect.height) / 2;
x += xi->rect.x;
y += xi->rect.y;
meta_topic (META_DEBUG_PLACEMENT, "Centered window %s on screen %d xinerama %d\n",
window->desc, window->screen->number, xi->number);
goto done_check_denied_focus;
}
/* Find windows that matter (not minimized, on same workspace
* as placed window, may be shaded - if shaded we pretend it isn't
* for placement purposes)
*/
{
GSList *all_windows;
GSList *tmp;
all_windows = meta_display_list_windows (window->display);
tmp = all_windows;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
if (meta_window_showing_on_its_workspace (w) &&
w != window &&
(window->workspace == w->workspace ||
window->on_all_workspaces || w->on_all_workspaces))
windows = g_list_prepend (windows, w);
tmp = tmp->next;
}
g_slist_free (all_windows);
}
/* Warning, this is a round trip! */
xi = meta_screen_get_current_xinerama (window->screen);
/* "Origin" placement algorithm */
x = xi->rect.x;
y = xi->rect.y;
if (find_first_fit (window, fgeom, windows,
xi->number,
x, y, &x, &y))
goto done_check_denied_focus;
/* Maximize windows if they are too big for their work area (bit of
* a hack here). Assume undecorated windows probably don't intend to
* be maximized.
*/
if (window->has_maximize_func && window->decorated &&
!window->fullscreen)
{
MetaRectangle workarea;
MetaRectangle outer;
meta_window_get_work_area_for_xinerama (window,
xi->number,
&workarea);
meta_window_get_outer_rect (window, &outer);
/* If the window is bigger than the screen, then automaximize. Do NOT
* auto-maximize the directions independently. See #419810.
*/
if (outer.width >= workarea.width && outer.height >= workarea.height)
{
window->maximize_horizontally_after_placement = TRUE;
window->maximize_vertically_after_placement = TRUE;
}
}
/* If no placement has been done, revert to cascade to avoid
* fully overlapping window (e.g. starting multiple terminals)
* */
if (!meta_prefs_get_center_new_windows() && (x == xi->rect.x && y == xi->rect.y))
find_next_cascade (window, fgeom, windows, x, y, &x, &y);
done_check_denied_focus:
/* If the window is being denied focus and isn't a transient of the
* focus window, we do NOT want it to overlap with the focus window
* if at all possible. This is guaranteed to only be called if the
* focus_window is non-NULL, and we try to avoid that window.
*/
if (window->denied_focus_and_not_transient)
{
gboolean found_fit;
MetaWindow *focus_window;
MetaRectangle overlap;
focus_window = window->display->focus_window;
g_assert (focus_window != NULL);
/* No need to do anything if the window doesn't overlap at all */
found_fit = !meta_rectangle_intersect (&window->rect,
&focus_window->rect,
&overlap);
/* Try to do a first fit again, this time only taking into account the
* focus window.
*/
if (!meta_prefs_get_center_new_windows() && !found_fit)
{
GList *focus_window_list;
focus_window_list = g_list_prepend (NULL, focus_window);
/* Reset x and y ("origin" placement algorithm) */
x = xi->rect.x;
y = xi->rect.y;
found_fit = find_first_fit (window, fgeom, focus_window_list,
xi->number,
x, y, &x, &y);
g_list_free (focus_window_list);
}
/* If that still didn't work, just place it where we can see as much
* as possible.
*/
if (!found_fit)
find_most_freespace (window, fgeom, focus_window, x, y, &x, &y);
}
done:
g_list_free (windows);
done_no_constraints:
*new_x = x;
*new_y = y;
}
/* Find the leftmost, then topmost, empty area on the workspace
* that can contain the new window.
*
* Cool feature to have: if we can't fit the current window size,
* try shrinking the window (within geometry constraints). But
* beware windows such as Emacs with no sane minimum size, we
* don't want to create a 1x1 Emacs.
*/
static gboolean
find_first_fit (MetaWindow *window,
MetaFrameGeometry *fgeom,
/* visible windows on relevant workspaces */
GList *windows,
int xinerama,
int x,
int y,
int *new_x,
int *new_y)
{
/* This algorithm is limited - it just brute-force tries
* to fit the window in a small number of locations that are aligned
* with existing windows. It tries to place the window on
* the bottom of each existing window, and then to the right
* of each existing window, aligned with the left/top of the
* existing window in each of those cases.
*/
int retval;
GList *below_sorted;
GList *right_sorted;
GList *tmp;
MetaRectangle rect;
MetaRectangle work_area;
retval = FALSE;
/* Below each window */
below_sorted = g_list_copy (windows);
below_sorted = g_list_sort (below_sorted, leftmost_cmp);
below_sorted = g_list_sort (below_sorted, topmost_cmp);
/* To the right of each window */
right_sorted = g_list_copy (windows);
right_sorted = g_list_sort (right_sorted, topmost_cmp);
right_sorted = g_list_sort (right_sorted, leftmost_cmp);
rect.width = window->rect.width;
rect.height = window->rect.height;
if (fgeom)
{
rect.width += fgeom->left_width + fgeom->right_width;
rect.height += fgeom->top_height + fgeom->bottom_height;
}
#ifdef WITH_VERBOSE_MODE
{
char xinerama_location_string[RECT_LENGTH];
meta_rectangle_to_string (&window->screen->xinerama_infos[xinerama].rect,
xinerama_location_string);
meta_topic (META_DEBUG_XINERAMA,
"Natural xinerama is %s\n",
xinerama_location_string);
}
#endif
meta_window_get_work_area_for_xinerama (window, xinerama, &work_area);
if (meta_prefs_get_center_new_windows ())
center_rect_in_area (&rect, &work_area);
else
center_tile_rect_in_area (&rect, &work_area);
if (meta_rectangle_contains_rect (&work_area, &rect) &&
(meta_prefs_get_center_new_windows () ||
!rectangle_overlaps_some_window (&rect, windows)))
{
*new_x = rect.x;
*new_y = rect.y;
if (fgeom)
{
*new_x += fgeom->left_width;
*new_y += fgeom->top_height;
}
retval = TRUE;
goto out;
}
/* try below each window */
tmp = below_sorted;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
MetaRectangle outer_rect;
meta_window_get_outer_rect (w, &outer_rect);
rect.x = outer_rect.x;
rect.y = outer_rect.y + outer_rect.height;
if (meta_rectangle_contains_rect (&work_area, &rect) &&
!rectangle_overlaps_some_window (&rect, below_sorted))
{
*new_x = rect.x;
*new_y = rect.y;
if (fgeom)
{
*new_x += fgeom->left_width;
*new_y += fgeom->top_height;
}
retval = TRUE;
goto out;
}
tmp = tmp->next;
}
/* try to the right of each window */
tmp = right_sorted;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
MetaRectangle outer_rect;
meta_window_get_outer_rect (w, &outer_rect);
rect.x = outer_rect.x + outer_rect.width;
rect.y = outer_rect.y;
if (meta_rectangle_contains_rect (&work_area, &rect) &&
!rectangle_overlaps_some_window (&rect, right_sorted))
{
*new_x = rect.x;
*new_y = rect.y;
if (fgeom)
{
*new_x += fgeom->left_width;
*new_y += fgeom->top_height;
}
retval = TRUE;
goto out;
}
tmp = tmp->next;
}
out:
g_list_free (below_sorted);
g_list_free (right_sorted);
return retval;
}
