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track time to avoid sending a deluge of move/resize requests, suggestion

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2002-08-10  Havoc Pennington  <hp@pobox.com>

	* src/window.c (update_resize): track time to avoid sending a
	deluge of move/resize requests, suggestion from
	xavier.bestel@free.fr bug #86830. Not really sure if this will
	make a difference or not. We'll see I guess.
	(update_move): do same on move though it seems less important
	here.

	* src/display.h (struct _MetaDisplay): store the
	last time we sent a move/resize event.
This commit is contained in:
Havoc Pennington 2002-08-10 05:27:17 +00:00 committed by Havoc Pennington
parent 9a72bf1858
commit f36d236a55
4 changed files with 66 additions and 1 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
2002-08-10 Havoc Pennington <hp@pobox.com>
* src/window.c (update_resize): track time to avoid sending a
deluge of move/resize requests, suggestion from
xavier.bestel@free.fr bug #86830. Not really sure if this will
make a difference or not. We'll see I guess.
(update_move): do same on move though it seems less important
here.
* src/display.h (struct _MetaDisplay): store the
last time we sent a move/resize event.
2002-08-10 Havoc Pennington <hp@pobox.com>
* src/window.c (meta_window_notify_focus): add a FIXME comment

3
src/display.c
View File

@ -2396,6 +2396,9 @@ meta_display_begin_grab_op (MetaDisplay *display,
display->grab_initial_root_y = root_y;
display->grab_current_root_x = root_x;
display->grab_current_root_y = root_y;
display->grab_last_moveresize_time.tv_sec = 0;
display->grab_last_moveresize_time.tv_usec = 0;
if (display->grab_window)
{
display->grab_initial_window_pos = display->grab_window->rect;

3
src/display.h
View File

@ -219,7 +219,8 @@ struct _MetaDisplay
MetaRectangle grab_initial_window_pos;
MetaRectangle grab_current_window_pos;
MetaResizePopup *grab_resize_popup;
GTimeVal grab_last_moveresize_time;
/* Keybindings stuff */
MetaKeyBinding *screen_bindings;

49
src/window.c
View File

@ -5817,6 +5817,37 @@ window_query_root_pointer (MetaWindow *window,
*y = root_y_return;
}
static gboolean
check_moveresize_frequency (MetaWindow *window)
{
GTimeVal current_time;
double elapsed;
g_get_current_time (&current_time);
/* use milliseconds, 1000 milliseconds/second */
elapsed =
((((double)current_time.tv_sec - window->display->grab_last_moveresize_time.tv_sec) * G_USEC_PER_SEC +
(current_time.tv_usec - window->display->grab_last_moveresize_time.tv_usec))) / 1000.0;
#define MAX_RESIZES_PER_SECOND 30.0
if (elapsed < (1000.0 / MAX_RESIZES_PER_SECOND))
return FALSE;
/* store latest time */
window->display->grab_last_moveresize_time = current_time;
return TRUE;
}
static void
clear_moveresize_time (MetaWindow *window)
{
/* Forces the next update to actually do something */
window->display->grab_last_moveresize_time.tv_sec = 0;
window->display->grab_last_moveresize_time.tv_usec = 0;
}
static void
update_move (MetaWindow *window,
unsigned int mask,
@ -5838,6 +5869,14 @@ update_move (MetaWindow *window,
new_x = meta_window_find_nearest_vertical_edge (window, new_x);
new_y = meta_window_find_nearest_horizontal_edge (window, new_y);
}
/* Force a move regardless of time if a certain delta is exceeded,
* so we don't get too out of sync with reality when dropping frames
*/
#define MOVE_THRESHOLD 15
if (!check_moveresize_frequency (window) &&
ABS (dx) < MOVE_THRESHOLD && ABS (dy) < MOVE_THRESHOLD)
return;
meta_window_move (window, TRUE, new_x, new_y);
}
@ -5903,6 +5942,14 @@ update_resize (MetaWindow *window,
break;
}
/* Force a move regardless of time if a certain delta
* is exceeded
*/
#define RESIZE_THRESHOLD 15
if (!check_moveresize_frequency (window) &&
ABS (dx) < RESIZE_THRESHOLD && ABS (dy) < RESIZE_THRESHOLD)
return;
/* compute gravity of client during operation */
gravity = meta_resize_gravity_from_grab_op (window->display->grab_op);
g_assert (gravity >= 0);
@ -5921,6 +5968,7 @@ meta_window_handle_mouse_grab_op_event (MetaWindow *window,
{
case META_GRAB_OP_MOVING:
case META_GRAB_OP_KEYBOARD_MOVING:
clear_moveresize_time (window);
update_move (window, event->xbutton.state,
event->xbutton.x_root, event->xbutton.y_root);
break;
@ -5941,6 +5989,7 @@ meta_window_handle_mouse_grab_op_event (MetaWindow *window,
case META_GRAB_OP_KEYBOARD_RESIZING_NE:
case META_GRAB_OP_KEYBOARD_RESIZING_SW:
case META_GRAB_OP_KEYBOARD_RESIZING_NW:
clear_moveresize_time (window);
update_resize (window, event->xbutton.x_root, event->xbutton.y_root);
break;