mutter/src/core/frame.c
Jasper St. Pierre aec3edb1cc Always map the client and frame windows
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
2014-02-14 23:19:41 -05:00

437 lines
14 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Mutter X window decorations */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2003, 2004 Red Hat, Inc.
* Copyright (C) 2005 Elijah Newren
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "frame.h"
#include "bell.h"
#include <meta/errors.h>
#include "keybindings-private.h"
#include <X11/extensions/Xrender.h>
#define EVENT_MASK (SubstructureRedirectMask | \
StructureNotifyMask | SubstructureNotifyMask | \
ExposureMask | \
ButtonPressMask | ButtonReleaseMask | \
PointerMotionMask | PointerMotionHintMask | \
EnterWindowMask | LeaveWindowMask | \
FocusChangeMask | \
ColormapChangeMask)
void
meta_window_ensure_frame (MetaWindow *window)
{
MetaFrame *frame;
XSetWindowAttributes attrs;
Visual *visual;
gulong create_serial;
MetaStackWindow stack_window;
if (window->frame)
return;
frame = g_new (MetaFrame, 1);
frame->window = window;
frame->xwindow = None;
frame->rect = window->rect;
frame->child_x = 0;
frame->child_y = 0;
frame->bottom_height = 0;
frame->right_width = 0;
frame->current_cursor = 0;
frame->is_flashing = FALSE;
frame->borders_cached = FALSE;
meta_verbose ("Framing window %s: visual %s default, depth %d default depth %d\n",
window->desc,
XVisualIDFromVisual (window->xvisual) ==
XVisualIDFromVisual (window->screen->default_xvisual) ?
"is" : "is not",
window->depth, window->screen->default_depth);
meta_verbose ("Frame geometry %d,%d %dx%d\n",
frame->rect.x, frame->rect.y,
frame->rect.width, frame->rect.height);
/* Default depth/visual handles clients with weird visuals; they can
* always be children of the root depth/visual obviously, but
* e.g. DRI games can't be children of a parent that has the same
* visual as the client. NULL means default visual.
*
* We look for an ARGB visual if we can find one, otherwise use
* the default of NULL.
*/
/* Special case for depth 32 windows (assumed to be ARGB),
* we use the window's visual. Otherwise we just use the system visual.
*/
if (window->depth == 32)
visual = window->xvisual;
else
visual = NULL;
frame->xwindow = meta_ui_create_frame_window (window->screen->ui,
window->display->xdisplay,
visual,
frame->rect.x,
frame->rect.y,
frame->rect.width,
frame->rect.height,
frame->window->screen->number,
&create_serial);
stack_window.any.type = META_WINDOW_CLIENT_TYPE_X11;
stack_window.x11.xwindow = frame->xwindow;
meta_stack_tracker_record_add (window->screen->stack_tracker,
&stack_window,
create_serial);
meta_verbose ("Frame for %s is 0x%lx\n", frame->window->desc, frame->xwindow);
attrs.event_mask = EVENT_MASK;
XChangeWindowAttributes (window->display->xdisplay,
frame->xwindow, CWEventMask, &attrs);
meta_display_register_x_window (window->display, &frame->xwindow, window);
meta_error_trap_push (window->display);
if (window->mapped)
{
window->mapped = FALSE; /* the reparent will unmap the window,
* we don't want to take that as a withdraw
*/
meta_topic (META_DEBUG_WINDOW_STATE,
"Incrementing unmaps_pending on %s for reparent\n", window->desc);
window->unmaps_pending += 1;
}
/* window was reparented to this position */
window->rect.x = 0;
window->rect.y = 0;
stack_window.x11.xwindow = window->xwindow;
meta_stack_tracker_record_remove (window->screen->stack_tracker,
&stack_window,
XNextRequest (window->display->xdisplay));
XReparentWindow (window->display->xdisplay,
window->xwindow,
frame->xwindow,
window->rect.x,
window->rect.y);
/* FIXME handle this error */
meta_error_trap_pop (window->display);
/* stick frame to the window */
window->frame = frame;
/* Now that frame->xwindow is registered with window, we can set its
* style and background.
*/
meta_ui_update_frame_style (window->screen->ui, frame->xwindow);
meta_ui_reset_frame_bg (window->screen->ui, frame->xwindow);
if (window->title)
meta_ui_set_frame_title (window->screen->ui,
window->frame->xwindow,
window->title);
/* Move keybindings to frame instead of window */
meta_window_grab_keys (window);
meta_ui_map_frame (frame->window->screen->ui, frame->xwindow);
}
void
meta_window_destroy_frame (MetaWindow *window)
{
MetaFrame *frame;
MetaFrameBorders borders;
MetaStackWindow stack_window;
if (window->frame == NULL)
return;
meta_verbose ("Unframing window %s\n", window->desc);
frame = window->frame;
meta_frame_calc_borders (frame, &borders);
meta_bell_notify_frame_destroy (frame);
/* Unparent the client window; it may be destroyed,
* thus the error trap.
*/
meta_error_trap_push (window->display);
if (window->mapped)
{
window->mapped = FALSE; /* Keep track of unmapping it, so we
* can identify a withdraw initiated
* by the client.
*/
meta_topic (META_DEBUG_WINDOW_STATE,
"Incrementing unmaps_pending on %s for reparent back to root\n", window->desc);
window->unmaps_pending += 1;
}
stack_window.any.type = META_WINDOW_CLIENT_TYPE_X11;
stack_window.x11.xwindow = window->xwindow;
meta_stack_tracker_record_add (window->screen->stack_tracker,
&stack_window,
XNextRequest (window->display->xdisplay));
XReparentWindow (window->display->xdisplay,
window->xwindow,
window->screen->xroot,
/* Using anything other than meta_window_get_position()
* coordinates here means we'll need to ensure a configure
* notify event is sent; see bug 399552.
*/
window->frame->rect.x + borders.invisible.left,
window->frame->rect.y + borders.invisible.top);
meta_error_trap_pop (window->display);
meta_ui_destroy_frame_window (window->screen->ui, frame->xwindow);
meta_display_unregister_x_window (window->display,
frame->xwindow);
window->frame = NULL;
if (window->frame_bounds)
{
cairo_region_destroy (window->frame_bounds);
window->frame_bounds = NULL;
}
/* Move keybindings to window instead of frame */
meta_window_grab_keys (window);
g_free (frame);
/* Put our state back where it should be */
meta_window_queue (window, META_QUEUE_CALC_SHOWING);
meta_window_queue (window, META_QUEUE_MOVE_RESIZE);
}
MetaFrameFlags
meta_frame_get_flags (MetaFrame *frame)
{
MetaFrameFlags flags;
flags = 0;
if (frame->window->border_only)
{
; /* FIXME this may disable the _function_ as well as decor
* in some cases, which is sort of wrong.
*/
}
else
{
flags |= META_FRAME_ALLOWS_MENU;
if (frame->window->has_close_func)
flags |= META_FRAME_ALLOWS_DELETE;
if (frame->window->has_maximize_func)
flags |= META_FRAME_ALLOWS_MAXIMIZE;
if (frame->window->has_minimize_func)
flags |= META_FRAME_ALLOWS_MINIMIZE;
if (frame->window->has_shade_func)
flags |= META_FRAME_ALLOWS_SHADE;
}
if (META_WINDOW_ALLOWS_MOVE (frame->window))
flags |= META_FRAME_ALLOWS_MOVE;
if (META_WINDOW_ALLOWS_HORIZONTAL_RESIZE (frame->window))
flags |= META_FRAME_ALLOWS_HORIZONTAL_RESIZE;
if (META_WINDOW_ALLOWS_VERTICAL_RESIZE (frame->window))
flags |= META_FRAME_ALLOWS_VERTICAL_RESIZE;
if (meta_window_appears_focused (frame->window))
flags |= META_FRAME_HAS_FOCUS;
if (frame->window->shaded)
flags |= META_FRAME_SHADED;
if (frame->window->on_all_workspaces_requested)
flags |= META_FRAME_STUCK;
/* FIXME: Should we have some kind of UI for windows that are just vertically
* maximized or just horizontally maximized?
*/
if (META_WINDOW_MAXIMIZED (frame->window))
flags |= META_FRAME_MAXIMIZED;
if (META_WINDOW_TILED_LEFT (frame->window))
flags |= META_FRAME_TILED_LEFT;
if (META_WINDOW_TILED_RIGHT (frame->window))
flags |= META_FRAME_TILED_RIGHT;
if (frame->window->fullscreen)
flags |= META_FRAME_FULLSCREEN;
if (frame->is_flashing)
flags |= META_FRAME_IS_FLASHING;
if (frame->window->wm_state_above)
flags |= META_FRAME_ABOVE;
return flags;
}
void
meta_frame_borders_clear (MetaFrameBorders *self)
{
self->visible.top = self->invisible.top = self->total.top = 0;
self->visible.bottom = self->invisible.bottom = self->total.bottom = 0;
self->visible.left = self->invisible.left = self->total.left = 0;
self->visible.right = self->invisible.right = self->total.right = 0;
}
void
meta_frame_calc_borders (MetaFrame *frame,
MetaFrameBorders *borders)
{
/* Save on if statements and potential uninitialized values
* in callers -- if there's no frame, then zero the borders. */
if (frame == NULL)
meta_frame_borders_clear (borders);
else
{
if (!frame->borders_cached)
{
meta_ui_get_frame_borders (frame->window->screen->ui,
frame->xwindow,
&frame->cached_borders);
frame->borders_cached = TRUE;
}
*borders = frame->cached_borders;
}
}
void
meta_frame_clear_cached_borders (MetaFrame *frame)
{
frame->borders_cached = FALSE;
}
gboolean
meta_frame_sync_to_window (MetaFrame *frame,
int resize_gravity,
gboolean need_move,
gboolean need_resize)
{
meta_topic (META_DEBUG_GEOMETRY,
"Syncing frame geometry %d,%d %dx%d (SE: %d,%d)\n",
frame->rect.x, frame->rect.y,
frame->rect.width, frame->rect.height,
frame->rect.x + frame->rect.width,
frame->rect.y + frame->rect.height);
/* set bg to none to avoid flicker */
if (need_resize)
{
meta_ui_unflicker_frame_bg (frame->window->screen->ui,
frame->xwindow,
frame->rect.width,
frame->rect.height);
}
meta_ui_move_resize_frame (frame->window->screen->ui,
frame->xwindow,
frame->rect.x,
frame->rect.y,
frame->rect.width,
frame->rect.height);
if (need_resize)
{
meta_ui_reset_frame_bg (frame->window->screen->ui,
frame->xwindow);
/* If we're interactively resizing the frame, repaint
* it immediately so we don't start to lag.
*/
if (frame->window->display->grab_window ==
frame->window)
meta_ui_repaint_frame (frame->window->screen->ui,
frame->xwindow);
}
return need_resize;
}
cairo_region_t *
meta_frame_get_frame_bounds (MetaFrame *frame)
{
return meta_ui_get_frame_bounds (frame->window->screen->ui,
frame->xwindow,
frame->rect.width,
frame->rect.height);
}
void
meta_frame_get_mask (MetaFrame *frame,
cairo_t *cr)
{
meta_ui_get_frame_mask (frame->window->screen->ui, frame->xwindow,
frame->rect.width, frame->rect.height, cr);
}
void
meta_frame_queue_draw (MetaFrame *frame)
{
meta_ui_queue_frame_draw (frame->window->screen->ui,
frame->xwindow);
}
void
meta_frame_set_screen_cursor (MetaFrame *frame,
MetaCursor cursor)
{
Cursor xcursor;
if (cursor == frame->current_cursor)
return;
frame->current_cursor = cursor;
if (cursor == META_CURSOR_DEFAULT)
XUndefineCursor (frame->window->display->xdisplay, frame->xwindow);
else
{
xcursor = meta_display_create_x_cursor (frame->window->display, cursor);
XDefineCursor (frame->window->display->xdisplay, frame->xwindow, xcursor);
XFlush (frame->window->display->xdisplay);
XFreeCursor (frame->window->display->xdisplay, xcursor);
}
}
Window
meta_frame_get_xwindow (MetaFrame *frame)
{
return frame->xwindow;
}