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This commit is contained in:
rhp 2001-06-24 08:09:10 +00:00
parent 8025ecea02
commit bca589280c
7 changed files with 390 additions and 24 deletions
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64
src/display.c
View File

@ -328,6 +328,57 @@ ptrcmp (gconstpointer a, gconstpointer b)
return 0;
}
GSList*
meta_display_list_windows (MetaDisplay *display)
{
GSList *winlist;
GSList *tmp;
GSList *prev;
winlist = NULL;
g_hash_table_foreach (display->window_ids,
listify_func,
&winlist);
/* Uniquify the list, since both frame windows and plain
* windows are in the hash
*/
winlist = g_slist_sort (winlist, ptrcmp);
prev = NULL;
tmp = winlist;
while (tmp != NULL)
{
GSList *next;
next = tmp->next;
if (next &&
next->data == tmp->data)
{
/* Delete tmp from list */
if (prev)
prev->next = next;
if (tmp == winlist)
winlist = next;
g_slist_free_1 (tmp);
/* leave prev unchanged */
}
else
{
prev = tmp;
}
tmp = next;
}
return winlist;
}
void
meta_display_close (MetaDisplay *display)
{
@ -337,21 +388,14 @@ meta_display_close (MetaDisplay *display)
if (display->error_traps)
meta_bug ("Display closed with error traps pending\n");
winlist = NULL;
g_hash_table_foreach (display->window_ids,
listify_func,
&winlist);
winlist = g_slist_sort (winlist, ptrcmp);
winlist = meta_display_list_windows (display);
/* Unmanage all windows */
meta_display_grab (display);
tmp = winlist;
while (tmp != NULL)
{
if (tmp->next == NULL ||
(tmp->next && tmp->next->data != tmp->data))
meta_window_free (tmp->data);
meta_window_free (tmp->data);
tmp = tmp->next;
}

2
src/display.h
View File

@ -141,7 +141,7 @@ void meta_display_register_x_window (MetaDisplay *display,
void meta_display_unregister_x_window (MetaDisplay *display,
Window xwindow);
GSList* meta_display_list_windows (MetaDisplay *display);
MetaDisplay* meta_display_for_x_display (Display *xdisplay);
GSList* meta_displays_list (void);

209
src/place.c
View File

@ -20,6 +20,177 @@
*/
#include "place.h"
#include "workspace.h"
#include <gdk/gdkregion.h>
#include <math.h>
static gint
northwestcmp (gconstpointer a, gconstpointer b)
{
MetaWindow *aw = (gpointer) a;
MetaWindow *bw = (gpointer) b;
int from_origin_a;
int from_origin_b;
int ax, ay, bx, by;
/* we're interested in the frame position for cascading,
* not meta_window_get_position()
*/
if (aw->frame)
{
ax = aw->frame->rect.x;
ay = aw->frame->rect.y;
}
else
{
ax = aw->rect.x;
ay = aw->rect.y;
}
if (bw->frame)
{
bx = bw->frame->rect.x;
by = bw->frame->rect.y;
}
else
{
bx = bw->rect.x;
by = bw->rect.y;
}
/* probably there's a fast good-enough-guess we could use here. */
from_origin_a = sqrt (ax * ax + ay * ay);
from_origin_b = sqrt (bx * bx + by * by);
if (from_origin_a < from_origin_b)
return -1;
else if (from_origin_a > from_origin_b)
return 1;
else
return 0;
}
static void
find_next_cascade (MetaWindow *window,
MetaFrameGeometry *fgeom,
/* visible windows on relevant workspaces */
GList *windows,
int x,
int y,
int *new_x,
int *new_y)
{
GList *tmp;
GList *sorted;
int cascade_x, cascade_y;
int x_threshold, y_threshold;
sorted = g_list_copy (windows);
sorted = g_list_sort (sorted, northwestcmp);
/* This is a "fuzzy" cascade algorithm.
* For each window in the list, we find where we'd cascade a
* new window after it. If a window is already nearly at that
* position, we move on.
*/
/* Find furthest-SE origin of all workspaces.
* cascade_x, cascade_y are the target position
* of NW corner of window frame.
*/
cascade_x = 0;
cascade_y = 0;
tmp = window->workspaces;
while (tmp != NULL)
{
MetaWorkspace *space = tmp->data;
cascade_x = MAX (cascade_x, space->workarea.x);
cascade_y = MAX (cascade_y, space->workarea.y);
tmp = tmp->next;
}
/* Find first cascade position that's not used. */
/* arbitrary-ish threshold, honors user attempts to
* manually cascade.
*/
x_threshold = MAX (fgeom->left_width, 10);
y_threshold = MAX (fgeom->top_height, 10);
tmp = sorted;
while (tmp != NULL)
{
MetaWindow *w;
int wx, wy;
w = tmp->data;
/* we want frame position, not window position */
if (w->frame)
{
wx = w->frame->rect.x;
wy = w->frame->rect.y;
}
else
{
wx = w->rect.x;
wy = w->rect.y;
}
if (ABS (wx - cascade_x) < x_threshold &&
ABS (wy - cascade_y) < y_threshold)
{
/* This window is "in the way", move to next cascade
* point. The new window frame should go at the origin
* of the client window we're stacking above.
*/
meta_window_get_position (w, &wx, &wy);
cascade_x = wx;
cascade_y = wy;
}
else
goto found; /* no window at this cascade point. */
tmp = tmp->next;
}
/* cascade_x and cascade_y will match the last window in the list. */
found:
g_list_free (sorted);
/* Convert coords to position of window, not position of frame. */
if (fgeom == NULL)
{
*new_x = cascade_x;
*new_y = cascade_y;
}
else
{
*new_x = cascade_x + fgeom->left_width;
*new_y = cascade_y + fgeom->top_height;
}
}
/* Find the leftmost, then topmost, empty area on the workspace
* that can contain the new window.
*/
static gboolean
find_first_fit (MetaWindow *window,
MetaFrameGeometry *fgeom,
/* visible windows on relevant workspaces */
GList *windows,
int x,
int y,
int *new_x,
int *new_y)
{
}
void
meta_window_place (MetaWindow *window,
@ -29,8 +200,11 @@ meta_window_place (MetaWindow *window,
int *new_x,
int *new_y)
{
GList *windows;
/* frame member variables should NEVER be used in here, only
* MetaFrameGeometry
* MetaFrameGeometry. But remember fgeom == NULL
* for undecorated windows.
*/
meta_verbose ("Placing window %s\n", window->desc);
@ -57,7 +231,8 @@ meta_window_place (MetaWindow *window,
/* center of child over center of parent */
x -= window->rect.width / 2;
y += fgeom->top_height;
if (fgeom)
y += fgeom->top_height;
meta_verbose ("Centered window %s over transient parent\n",
window->desc);
@ -85,10 +260,40 @@ meta_window_place (MetaWindow *window,
goto done;
}
/* 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)
*/
windows = NULL;
{
GSList *all_windows;
GSList *tmp;
all_windows = meta_display_list_windows (window->display);
tmp = all_windows;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
if (!w->minimized &&
w != window &&
meta_window_shares_some_workspace (window, w))
windows = g_list_prepend (windows, w);
tmp = tmp->next;
}
}
/* "Origin" placement algorithm */
x = 0;
y = 0;
/* Cascade */
find_next_cascade (window, fgeom, windows, x, y, &x, &y);
g_list_free (windows);
done:
*new_x = x;
*new_y = y;

37
src/stack.c
View File

@ -902,3 +902,40 @@ meta_stack_get_tab_next (MetaStack *stack,
return find_tab_forward (stack, NULL, -1);
}
int
meta_stack_windows_cmp (MetaStack *stack,
MetaWindow *window_a,
MetaWindow *window_b)
{
g_return_val_if_fail (window_a->screen == window_b->screen, 0);
/* -1 means a below b */
if (window_a->layer < window_b->layer)
return -1;
else if (window_a->layer > window_b->layer)
return 1;
else
{
GList *tmp;
g_assert (window_a->layer == window_b->layer);
tmp = stack->layers[window_a->layer];
while (tmp != NULL)
{
/* earlier in list is higher in stack */
if (tmp->data == window_a)
return 1;
else if (tmp->data == window_b)
return -1;
tmp = tmp->next;
}
meta_bug ("Didn't find windows in layer in meta_stack_windows_cmp()\n");
}
/* not reached */
return 0;
}

4
src/stack.h
View File

@ -95,6 +95,10 @@ MetaWindow* meta_stack_get_below (MetaStack *stack,
MetaWindow* meta_stack_get_tab_next (MetaStack *stack,
MetaWindow *window,
gboolean backward);
/* -1 if a < b, etc. */
int meta_stack_windows_cmp (MetaStack *stack,
MetaWindow *window_a,
MetaWindow *window_b);
#endif

90
src/window.c
View File

@ -82,6 +82,7 @@ static void meta_window_move_resize_internal (MetaWindow *window,
int w,
int h);
void meta_window_move_resize_now (MetaWindow *window);
static gboolean get_cardinal (MetaDisplay *display,
Window xwindow,
@ -235,12 +236,16 @@ meta_window_new (MetaDisplay *display, Window xwindow,
window->mapped = attrs.map_state != IsUnmapped;
/* if already mapped we don't want to do the placement thing */
window->placed = window->mapped;
if (window->placed)
meta_verbose ("Not placing window 0x%lx since it's already mapped\n",
xwindow);
window->unmanaging = FALSE;
window->calc_showing_queued = FALSE;
window->keys_grabbed = FALSE;
window->grab_on_frame = FALSE;
window->withdrawn = FALSE;
window->initial_workspace_set = FALSE;
window->calc_placement = FALSE;
window->unmaps_pending = 0;
@ -617,11 +622,31 @@ meta_window_calc_showing (MetaWindow *window)
static guint calc_showing_idle = 0;
static GSList *calc_showing_pending = NULL;
static int
stackcmp (gconstpointer a, gconstpointer b)
{
MetaWindow *aw = (gpointer) a;
MetaWindow *bw = (gpointer) b;
if (aw->screen != bw->screen)
return 0; /* don't care how they sort with respect to each other */
else
return meta_stack_windows_cmp (aw->screen->stack,
aw, bw);
}
static gboolean
idle_calc_showing (gpointer data)
{
GSList *tmp;
/* sort them from bottom to top, so we map the
* bottom windows first, so that placement (e.g. cascading)
* works properly
*/
calc_showing_pending = g_slist_sort (calc_showing_pending,
stackcmp);
tmp = calc_showing_pending;
while (tmp != NULL)
{
@ -685,14 +710,29 @@ meta_window_queue_calc_showing (MetaWindow *window)
void
meta_window_show (MetaWindow *window)
{
meta_verbose ("Showing window %s, shaded: %d iconic: %d\n",
window->desc, window->shaded, window->iconic);
meta_verbose ("Showing window %s, shaded: %d iconic: %d placed: %d\n",
window->desc, window->shaded, window->iconic, window->placed);
/* don't ever do the initial position constraint thing again.
* This is toggled here so that initially-iconified windows
* still get placed when they are ultimately shown.
*/
window->placed = TRUE;
if (!window->placed)
{
/* We have to recalc the placement here since other windows may
* have been mapped/placed since we last did constrain_position
*/
/* calc_placement is an efficiency hack to avoid
* multiple placement calculations before we finally
* show the window.
*/
window->calc_placement = TRUE;
meta_window_move_resize_now (window);
window->calc_placement = FALSE;
/* don't ever do the initial position constraint thing again.
* This is toggled here so that initially-iconified windows
* still get placed when they are ultimately shown.
*/
window->placed = TRUE;
}
/* Shaded means the frame is mapped but the window is not */
@ -1235,9 +1275,8 @@ meta_window_move_resize (MetaWindow *window,
}
void
meta_window_queue_move_resize (MetaWindow *window)
meta_window_move_resize_now (MetaWindow *window)
{
/* FIXME actually queue, don't do it immediately */
int x, y;
meta_window_get_position (window, &x, &y);
@ -1246,6 +1285,13 @@ meta_window_queue_move_resize (MetaWindow *window)
window->rect.width, window->rect.height);
}
void
meta_window_queue_move_resize (MetaWindow *window)
{
/* FIXME actually queue, don't do it immediately */
meta_window_move_resize_now (window);
}
void
meta_window_get_position (MetaWindow *window,
int *x,
@ -3116,12 +3162,12 @@ constrain_position (MetaWindow *window,
int y,
int *new_x,
int *new_y)
{
{
/* frame member variables should NEVER be used in here, only
* MetaFrameGeometry
*/
if (!window->placed)
if (!window->placed && window->calc_placement)
meta_window_place (window, fgeom, x, y, &x, &y);
if (window->type != META_WINDOW_DESKTOP &&
@ -3319,3 +3365,25 @@ meta_window_show_menu (MetaWindow *window,
meta_verbose ("Popping up window menu for %s\n", window->desc);
meta_ui_window_menu_popup (menu, root_x, root_y, button, timestamp);
}
gboolean
meta_window_shares_some_workspace (MetaWindow *window,
MetaWindow *with)
{
GList *tmp;
if (window->on_all_workspaces ||
with->on_all_workspaces)
return TRUE;
tmp = window->workspaces;
while (tmp != NULL)
{
if (g_list_find (with->workspaces, tmp->data) != NULL)
return TRUE;
tmp = tmp->next;
}
return FALSE;
}

8
src/window.h
View File

@ -169,6 +169,11 @@ struct _MetaWindow
* it was withdrawn
*/
guint withdrawn : 1;
/* TRUE if constrain_position should calc placement.
* only relevant if !window->placed
*/
guint calc_placement : 1;
/* Number of UnmapNotify that are caused by us, if
* we get UnmapNotify with none pending then the client
@ -270,4 +275,7 @@ void meta_window_show_menu (MetaWindow *window,
int button,
Time timestamp);
gboolean meta_window_shares_some_workspace (MetaWindow *window,
MetaWindow *with);
#endif