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Always map the client and frame windows

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Traditionally, WMs unmap windows when minimizing them, and map them
when restoring them or wanting to show them for other reasons, like
upon creation.

However, as metacity morphed into mutter, we optionally chose to keep
windows mapped for the lifetime of the window under the user option
"live-window-previews", which makes the code keep windows mapped so it
can show window preview for minimized windows in other places, like
Alt-Tab and Expose.

I removed this preference two years ago mechanically, by removing all
the if statements, but never went through and cleaned up the code so
that windows are simply mapped for the lifetime of the window -- the
"architecture" of the old code that maps and unmaps on show/hide was
still there.

Remove this now.

The one case we still need to be careful of is shaded windows, in which
we do still unmap the client window. In the future, we might want to
show previews of shaded windows in the overview and Alt-Tab. In that
we'd also keep shaded windows mapped, and could remove all unmap logic,
but we'd need a more complex method of showing the shaded titlebar, such
as using a different actor.

At the same time, simplify the compositor interface by removing
meta_compositor_window_[un]mapped API, and instead adding/removing the
window on-demand.

https://bugzilla.gnome.org/show_bug.cgi?id=720631
This commit is contained in:
Jasper St. Pierre 2014-02-01 19:06:51 -05:00
parent c78089437d
commit 7cdf55871e
9 changed files with 54 additions and 253 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
doc/reference/meta-sections.txt
View File

@ -96,8 +96,6 @@ meta_compositor_hide_window
meta_compositor_switch_workspace
meta_compositor_maximize_window
meta_compositor_unmaximize_window
meta_compositor_window_mapped
meta_compositor_window_unmapped
meta_compositor_sync_window_geometry
meta_compositor_set_updates_frozen
meta_compositor_queue_frame_drawn

33
src/compositor/compositor.c
View File

@ -42,15 +42,6 @@
* the call, so it may be necessary to readjust the display based on the
* old_rect to start the animation.
*
* meta_compositor_window_mapped() and meta_compositor_window_unmapped() are
* notifications when the toplevel window (frame or client window) is mapped or
* unmapped. That is, when the result of meta_window_toplevel_is_mapped()
* changes. The main use of this is to drop resources when a window is unmapped.
* A window will always be mapped before meta_compositor_show_window()
* is called and will not be unmapped until after meta_compositor_hide_window()
* is called. If the live_hidden_windows preference is set, windows will never
* be unmapped.
*
* # Containers #
*
* There's two containers in the stage that are used to place window actors, here
@ -1272,30 +1263,6 @@ meta_compositor_sync_stack (MetaCompositor *compositor,
sync_actor_stacking (info);
}
void
meta_compositor_window_mapped (MetaCompositor *compositor,
MetaWindow *window)
{
MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_window_mapped\n");
if (!window_actor)
return;
meta_window_actor_mapped (window_actor);
}
void
meta_compositor_window_unmapped (MetaCompositor *compositor,
MetaWindow *window)
{
MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_window_unmapped\n");
if (!window_actor)
return;
meta_window_actor_unmapped (window_actor);
}
void
meta_compositor_sync_window_geometry (MetaCompositor *compositor,
MetaWindow *window,

54
src/compositor/meta-window-actor.c
View File

@ -102,7 +102,6 @@ struct _MetaWindowActorPrivate
GList *frames;
guint visible : 1;
guint mapped : 1;
guint argb32 : 1;
guint disposed : 1;
guint redecorating : 1;
@ -890,7 +889,7 @@ meta_window_actor_damage_all (MetaWindowActor *self)
texture = meta_shaped_texture_get_texture (META_SHAPED_TEXTURE (priv->actor));
if (!priv->mapped || priv->needs_pixmap)
if (priv->needs_pixmap)
return;
update_area (self, 0, 0, cogl_texture_get_width (texture), cogl_texture_get_height (texture));
@ -966,7 +965,7 @@ meta_window_actor_queue_frame_drawn (MetaWindowActor *self,
{
queue_send_frame_messages_timeout (self);
}
else if (priv->mapped && !priv->needs_pixmap)
else
{
const cairo_rectangle_int_t clip = { 0, 0, 1, 1 };
clutter_actor_queue_redraw_with_clip (priv->actor, &clip);
@ -998,9 +997,6 @@ meta_window_actor_queue_create_pixmap (MetaWindowActor *self)
priv->needs_pixmap = TRUE;
if (!priv->mapped)
return;
if (is_frozen (self))
return;
@ -1096,9 +1092,6 @@ meta_window_actor_after_effects (MetaWindowActor *self)
meta_window_actor_sync_visibility (self);
meta_window_actor_sync_actor_geometry (self, FALSE);
if (!meta_window_is_mapped (priv->window))
meta_window_actor_detach (self);
if (priv->needs_pixmap)
clutter_actor_queue_redraw (priv->actor);
}
@ -1515,9 +1508,7 @@ meta_window_actor_new (MetaWindow *window)
priv->last_width = -1;
priv->last_height = -1;
priv->mapped = meta_window_toplevel_is_mapped (priv->window);
if (priv->mapped)
meta_window_actor_queue_create_pixmap (self);
meta_window_actor_queue_create_pixmap (self);
meta_window_actor_set_updates_frozen (self,
meta_window_updates_are_frozen (priv->window));
@ -1552,34 +1543,6 @@ meta_window_actor_new (MetaWindow *window)
return self;
}
void
meta_window_actor_mapped (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
g_return_if_fail (!priv->mapped);
priv->mapped = TRUE;
meta_window_actor_queue_create_pixmap (self);
}
void
meta_window_actor_unmapped (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
g_return_if_fail (priv->mapped);
priv->mapped = FALSE;
if (meta_window_actor_effect_in_progress (self))
return;
meta_window_actor_detach (self);
priv->needs_pixmap = FALSE;
}
#if 0
/* Print out a region; useful for debugging */
static void
@ -1706,9 +1669,6 @@ check_needs_pixmap (MetaWindowActor *self)
if (!priv->needs_pixmap)
return;
if (!priv->mapped)
return;
if (xwindow == meta_screen_get_xroot (screen) ||
xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)))
return;
@ -1788,9 +1748,6 @@ check_needs_shadow (MetaWindowActor *self)
gboolean should_have_shadow;
gboolean appears_focused;
if (!priv->mapped)
return;
/* Calling meta_window_actor_has_shadow() here at every pre-paint is cheap
* and avoids the need to explicitly handle window type changes, which
* we would do if tried to keep track of when we might be adding or removing
@ -1894,7 +1851,7 @@ meta_window_actor_process_damage (MetaWindowActor *self,
return;
}
if (!priv->mapped || priv->needs_pixmap)
if (priv->needs_pixmap)
return;
update_area (self, event->area.x, event->area.y, event->area.width, event->area.height);
@ -2165,9 +2122,6 @@ check_needs_reshape (MetaWindowActor *self)
MetaFrameBorders borders;
cairo_rectangle_int_t client_area;
if (!priv->mapped)
return;
if (!priv->needs_reshape)
return;

2
src/core/display.c
View File

@ -2746,7 +2746,7 @@ event_callback (XEvent *event,
if (display->grab_op != META_GRAB_OP_NONE &&
display->grab_window == window &&
((window->frame == NULL) || !window->frame->mapped))
window->frame == NULL)
meta_display_end_grab_op (display, timestamp);
if (!frame_was_receiver)

3
src/core/frame.c
View File

@ -61,7 +61,6 @@ meta_window_ensure_frame (MetaWindow *window)
frame->right_width = 0;
frame->current_cursor = 0;
frame->mapped = FALSE;
frame->is_flashing = FALSE;
frame->borders_cached = FALSE;
@ -153,6 +152,8 @@ meta_window_ensure_frame (MetaWindow *window)
/* Move keybindings to frame instead of window */
meta_window_grab_keys (window);
meta_ui_map_frame (frame->window->screen->ui, frame->xwindow);
}
void

1
src/core/frame.h
View File

@ -47,7 +47,6 @@ struct _MetaFrame
int right_width;
int bottom_height;
guint mapped : 1;
guint need_reapply_frame_shape : 1;
guint is_flashing : 1; /* used by the visual bell flash */
guint borders_cached : 1;

197
src/core/window.c
View File

@ -776,6 +776,35 @@ meta_window_should_attach_to_parent (MetaWindow *window)
}
}
static gboolean
client_window_should_be_mapped (MetaWindow *window)
{
return !window->shaded;
}
static void
sync_client_window_mapped (MetaWindow *window)
{
gboolean should_be_mapped = client_window_should_be_mapped (window);
if (window->mapped == should_be_mapped)
return;
window->mapped = should_be_mapped;
meta_error_trap_push (window->display);
if (should_be_mapped)
{
XMapWindow (window->display->xdisplay, window->xwindow);
}
else
{
XUnmapWindow (window->display->xdisplay, window->xwindow);
window->unmaps_pending ++;
}
meta_error_trap_pop (window->display);
}
MetaWindow*
meta_window_new (MetaDisplay *display,
Window xwindow,
@ -1425,6 +1454,8 @@ meta_window_new (MetaDisplay *display,
/* disable show desktop mode unless we're a desktop component */
maybe_leave_show_desktop_mode (window);
sync_client_window_mapped (window);
meta_window_queue (window, META_QUEUE_CALC_SHOWING);
/* See bug 303284; a transient of the given window can already exist, in which
* case we think it should probably be shown.
@ -2229,6 +2260,8 @@ implement_showing (MetaWindow *window,
meta_verbose ("Implement showing = %d for window %s\n",
showing, window->desc);
sync_client_window_mapped (window);
if (!showing)
{
/* When we manage a new window, we normally delay placing it
@ -2817,94 +2850,6 @@ window_would_be_covered (const MetaWindow *newbie)
return FALSE; /* none found */
}
static gboolean
map_frame (MetaWindow *window)
{
if (window->frame && !window->frame->mapped)
{
meta_topic (META_DEBUG_WINDOW_STATE,
"Frame actually needs map\n");
window->frame->mapped = TRUE;
meta_ui_map_frame (window->screen->ui, window->frame->xwindow);
return TRUE;
}
else
return FALSE;
}
static gboolean
map_client_window (MetaWindow *window)
{
if (!window->mapped)
{
meta_topic (META_DEBUG_WINDOW_STATE,
"%s actually needs map\n", window->desc);
window->mapped = TRUE;
meta_error_trap_push (window->display);
XMapWindow (window->display->xdisplay, window->xwindow);
meta_error_trap_pop (window->display);
return TRUE;
}
else
return FALSE;
}
static gboolean
unmap_client_window (MetaWindow *window,
const char *reason)
{
if (window->mapped)
{
meta_topic (META_DEBUG_WINDOW_STATE,
"%s actually needs unmap%s\n",
window->desc, reason);
meta_topic (META_DEBUG_WINDOW_STATE,
"Incrementing unmaps_pending on %s%s\n",
window->desc, reason);
window->mapped = FALSE;
window->unmaps_pending += 1;
meta_error_trap_push (window->display);
XUnmapWindow (window->display->xdisplay, window->xwindow);
meta_error_trap_pop (window->display);
return TRUE;
}
else
return FALSE;
}
/**
* meta_window_is_mapped:
* @window: a #MetaWindow
*
* Determines whether the X window for the MetaWindow is mapped.
*/
gboolean
meta_window_is_mapped (MetaWindow *window)
{
return window->mapped;
}
/**
* meta_window_toplevel_is_mapped:
* @window: a #MetaWindow
*
* Determines whether the toplevel X window for the MetaWindow is
* mapped. (The frame window is mapped even without the client window
* when a window is shaded.)
*
* Return Value: %TRUE if the toplevel is mapped.
*/
gboolean
meta_window_toplevel_is_mapped (MetaWindow *window)
{
/* The frame is mapped but not the client window when the window
* is shaded.
*/
return window->mapped || (window->frame && window->frame->mapped);
}
static void
meta_window_force_placement (MetaWindow *window)
{
@ -2943,16 +2888,12 @@ meta_window_show (MetaWindow *window)
gboolean place_on_top_on_map;
gboolean needs_stacking_adjustment;
MetaWindow *focus_window;
gboolean toplevel_was_mapped;
gboolean toplevel_now_mapped;
gboolean notify_demands_attention = FALSE;
meta_topic (META_DEBUG_WINDOW_STATE,
"Showing window %s, shaded: %d iconic: %d placed: %d\n",
window->desc, window->shaded, window->iconic, window->placed);
toplevel_was_mapped = meta_window_toplevel_is_mapped (window);
focus_window = window->display->focus_window; /* May be NULL! */
did_show = FALSE;
window_state_on_map (window, &takes_focus_on_map, &place_on_top_on_map);
@ -3079,46 +3020,18 @@ meta_window_show (MetaWindow *window)
}
}
/* Shaded means the frame is mapped but the window is not */
if (map_frame (window))
did_show = TRUE;
if (window->shaded)
if (window->hidden)
{
unmap_client_window (window, " (shading)");
if (!window->iconic)
{
window->iconic = TRUE;
set_wm_state (window);
}
}
else
{
if (map_client_window (window))
did_show = TRUE;
if (window->hidden)
{
meta_stack_freeze (window->screen->stack);
window->hidden = FALSE;
meta_stack_thaw (window->screen->stack);
did_show = TRUE;
}
if (window->iconic)
{
window->iconic = FALSE;
set_wm_state (window);
}
meta_stack_freeze (window->screen->stack);
window->hidden = FALSE;
meta_stack_thaw (window->screen->stack);
did_show = TRUE;
}
toplevel_now_mapped = meta_window_toplevel_is_mapped (window);
if (toplevel_now_mapped != toplevel_was_mapped)
if (window->iconic)
{
if (window->display->compositor)
meta_compositor_window_mapped (window->display->compositor, window);
window->iconic = FALSE;
set_wm_state (window);
}
if (!window->visible_to_compositor)
@ -3207,14 +3120,10 @@ static void
meta_window_hide (MetaWindow *window)
{
gboolean did_hide;
gboolean toplevel_was_mapped;
gboolean toplevel_now_mapped;
meta_topic (META_DEBUG_WINDOW_STATE,
"Hiding window %s\n", window->desc);
toplevel_was_mapped = meta_window_toplevel_is_mapped (window);
if (window->visible_to_compositor)
{
window->visible_to_compositor = FALSE;
@ -3235,19 +3144,12 @@ meta_window_hide (MetaWindow *window)
break;
}
meta_compositor_hide_window (window->display->compositor,
window, effect);
meta_compositor_hide_window (window->display->compositor, window, effect);
}
}
did_hide = FALSE;
/* If this is the first time that we've calculating the showing
* state of the window, the frame and client window might not
* yet be mapped, so we need to map them now */
map_frame (window);
map_client_window (window);
if (!window->hidden)
{
meta_stack_freeze (window->screen->stack);
@ -3263,19 +3165,6 @@ meta_window_hide (MetaWindow *window)
set_wm_state (window);
}
toplevel_now_mapped = meta_window_toplevel_is_mapped (window);
if (toplevel_now_mapped != toplevel_was_mapped)
{
if (window->display->compositor)
{
/* As above, we may be *mapping* live hidden windows */
if (toplevel_now_mapped)
meta_compositor_window_mapped (window->display->compositor, window);
else
meta_compositor_window_unmapped (window->display->compositor, window);
}
}
set_net_wm_state (window);
if (did_hide && window->struts)
@ -7963,7 +7852,7 @@ redraw_icon (MetaWindow *window)
/* We could probably be smart and just redraw the icon here,
* instead of the whole frame.
*/
if (window->frame && (window->mapped || window->frame->mapped))
if (window->frame)
meta_ui_queue_frame_draw (window->screen->ui, window->frame->xwindow);
}

13
src/meta/compositor.h
View File

@ -75,11 +75,10 @@ gboolean meta_compositor_filter_keybinding (MetaCompositor *compositor,
MetaScreen *screen,
MetaKeyBinding *binding);
void meta_compositor_add_window (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_remove_window (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_add_window (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_remove_window (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_show_window (MetaCompositor *compositor,
MetaWindow *window,
MetaCompEffect effect);
@ -101,10 +100,6 @@ void meta_compositor_unmaximize_window (MetaCompositor *compositor,
MetaRectangle *old_rect,
MetaRectangle *new_rect);
void meta_compositor_window_mapped (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_window_unmapped (MetaCompositor *compositor,
MetaWindow *window);
void meta_compositor_sync_window_geometry (MetaCompositor *compositor,
MetaWindow *window,
gboolean did_placement);

2
src/meta/window.h
View File

@ -179,8 +179,6 @@ gboolean meta_window_requested_bypass_compositor (MetaWindow *window);
gboolean meta_window_requested_dont_bypass_compositor (MetaWindow *window);
gint *meta_window_get_all_monitors (MetaWindow *window, gsize *length);
gboolean meta_window_is_mapped (MetaWindow *window);
gboolean meta_window_toplevel_is_mapped (MetaWindow *window);
gboolean meta_window_get_icon_geometry (MetaWindow *window,
MetaRectangle *rect);
void meta_window_set_icon_geometry (MetaWindow *window,