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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. Theoretically, we might want to
show previews of shaded windows in the overview and Alt-Tab, so we remove
the complex unmap tracking for this later.
This commit is contained in:
Jasper St. Pierre
2014-01-21 15:51:46 -05:00
parent 56207ddb6a
commit 8e6f8087e8
6 changed files with 56 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/display.c
View File

@ -2777,7 +2777,7 @@ handle_other_xevent (MetaDisplay *display,
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

@ -62,7 +62,6 @@ 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;
@ -157,6 +156,8 @@ 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;

200
src/core/window.c
View File

@ -792,6 +792,41 @@ 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);
if (window->display->compositor)
meta_compositor_window_mapped (window->display->compositor, window);
}
else
{
XUnmapWindow (window->display->xdisplay, window->xwindow);
window->unmaps_pending ++;
if (window->display->compositor)
meta_compositor_window_unmapped (window->display->compositor, window);
}
meta_error_trap_pop (window->display);
}
static MetaWindow*
meta_window_new_shared (MetaDisplay *display,
MetaScreen *screen,
@ -1303,6 +1338,8 @@ meta_window_new_shared (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.
@ -2346,6 +2383,8 @@ 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
@ -2934,94 +2973,6 @@ 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)
{
@ -3060,16 +3011,12 @@ 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);
@ -3196,46 +3143,18 @@ 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, IconicState);
}
}
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, NormalState);
}
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, NormalState);
}
if (!window->visible_to_compositor)
@ -3327,14 +3246,10 @@ 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;
@ -3362,12 +3277,6 @@ meta_window_hide (MetaWindow *window)
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);
@ -3383,19 +3292,6 @@ meta_window_hide (MetaWindow *window)
set_wm_state (window, IconicState);
}
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)
@ -8217,7 +8113,7 @@ 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);
}