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Fix some rare memory leaks and behaviour when a mapped window is reparented away from root 

When a window that is mapped is reparented away from root, that is the same as it being completely unmapped+destroyed from our persective.  The window will no longer be in the same position on screen, and we will no longer want to listen to events on it.
Prior to this, the w->pixmap would not be freed when a mapped window was reparented away from root, and damage would not be updated for the screen correctly.
This commit is contained in:
Dana Jansens 2008-02-14 17:28:40 -05:00
parent 2c1a928e59
commit 398f722ce1
1 changed files with 19 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
xcompmgr.c
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@ -99,9 +99,8 @@ typedef struct _fade {
double cur;
double finish;
double step;
void (*callback) (Display *dpy, win *w, Bool gone);
void (*callback) (Display *dpy, win *w);
Display *dpy;
Bool gone;
} fade;
win *list;
@ -230,7 +229,7 @@ dequeue_fade (Display *dpy, fade *f)
{
*prev = f->next;
if (f->callback)
(*f->callback) (dpy, f->w, f->gone);
(*f->callback) (dpy, f->w);
free (f);
break;
}
@ -255,8 +254,8 @@ enqueue_fade (Display *dpy, fade *f)
static void
set_fade (Display *dpy, win *w, double start, double finish, double step,
void (*callback) (Display *dpy, win *w, Bool gone),
Bool gone, Bool exec_callback, Bool override)
void (*callback) (Display *dpy, win *w),
Bool exec_callback, Bool override)
{
fade *f;
@ -275,7 +274,7 @@ set_fade (Display *dpy, win *w, double start, double finish, double step,
{
if (exec_callback)
if (f->callback)
(*f->callback)(dpy, f->w, f->gone);
(*f->callback)(dpy, f->w);
}
if (finish < 0)
@ -288,7 +287,6 @@ set_fade (Display *dpy, win *w, double start, double finish, double step,
else if (f->cur > finish)
f->step = -step;
f->callback = callback;
f->gone = gone;
w->opacity = f->cur * OPAQUE;
#if 0
printf ("set_fade start %g step %g\n", f->cur, f->step);
@ -1204,7 +1202,7 @@ map_win (Display *dpy, Window id, unsigned long sequence, Bool fade)
#endif
if (fade && fadeWindows)
set_fade (dpy, w, 0, get_opacity_percent (dpy, w, 1.0), fade_in_step, 0, False, True, True);
set_fade (dpy, w, 0, get_opacity_percent (dpy, w, 1.0), fade_in_step, 0, True, True);
}
static void
@ -1261,7 +1259,7 @@ finish_unmap_win (Display *dpy, win *w)
#if HAS_NAME_WINDOW_PIXMAP
static void
unmap_callback (Display *dpy, win *w, Bool gone)
unmap_callback (Display *dpy, win *w)
{
finish_unmap_win (dpy, w);
}
@ -1276,7 +1274,7 @@ unmap_win (Display *dpy, Window id, Bool fade)
w->a.map_state = IsUnmapped;
#if HAS_NAME_WINDOW_PIXMAP
if (w->pixmap && fade && fadeWindows)
set_fade (dpy, w, w->opacity*1.0/OPAQUE, 0.0, fade_out_step, unmap_callback, False, False, True);
set_fade (dpy, w, w->opacity*1.0/OPAQUE, 0.0, fade_out_step, unmap_callback, False, True);
else
#endif
finish_unmap_win (dpy, w);
@ -1607,22 +1605,15 @@ circulate_win (Display *dpy, XCirculateEvent *ce)
}
static void
finish_destroy_win (Display *dpy, Window id, Bool gone)
finish_destroy_win (Display *dpy, Window id)
{
win **prev, *w;
for (prev = &list; (w = *prev); prev = &w->next)
if (w->id == id)
{
if (gone)
finish_unmap_win (dpy, w);
*prev = w->next;
if (w->picture)
{
set_ignore (dpy, NextRequest (dpy));
XRenderFreePicture (dpy, w->picture);
w->picture = None;
}
if (w->alphaPict)
{
XRenderFreePicture (dpy, w->alphaPict);
@ -1633,11 +1624,6 @@ finish_destroy_win (Display *dpy, Window id, Bool gone)
XRenderFreePicture (dpy, w->shadowPict);
w->shadowPict = None;
}
if (w->shadow)
{
XRenderFreePicture (dpy, w->shadow);
w->shadow = None;
}
if (w->damage != None)
{
set_ignore (dpy, NextRequest (dpy));
@ -1652,25 +1638,24 @@ finish_destroy_win (Display *dpy, Window id, Bool gone)
#if HAS_NAME_WINDOW_PIXMAP
static void
destroy_callback (Display *dpy, win *w, Bool gone)
destroy_callback (Display *dpy, win *w)
{
finish_destroy_win (dpy, w->id, gone);
finish_destroy_win (dpy, w->id);
}
#endif
static void
destroy_win (Display *dpy, Window id, Bool gone, Bool fade)
destroy_win (Display *dpy, Window id, Bool fade)
{
win *w = find_win (dpy, id);
#if HAS_NAME_WINDOW_PIXMAP
if (w && w->pixmap && fade && fadeWindows)
set_fade (dpy, w, w->opacity*1.0/OPAQUE, 0.0, fade_out_step,
destroy_callback, gone, False,
(w->a.map_state != IsUnmapped));
destroy_callback, False, (w->a.map_state != IsUnmapped));
else
#endif
{
finish_destroy_win (dpy, id, gone);
finish_destroy_win (dpy, id);
}
}
@ -1743,7 +1728,7 @@ damage_win (Display *dpy, XDamageNotifyEvent *de)
{
clipChanged = True;
if (fadeWindows)
set_fade (dpy, w, 0, get_opacity_percent (dpy, w, 1.0), fade_in_step, 0, False, True, True);
set_fade (dpy, w, 0, get_opacity_percent (dpy, w, 1.0), fade_in_step, 0, True, True);
w->usable = True;
}
}
@ -2107,7 +2092,7 @@ main (int argc, char **argv)
configure_win (dpy, &ev.xconfigure);
break;
case DestroyNotify:
destroy_win (dpy, ev.xdestroywindow.window, True, True);
destroy_win (dpy, ev.xdestroywindow.window, True);
break;
case MapNotify:
map_win (dpy, ev.xmap.window, ev.xmap.serial, True);
@ -2119,7 +2104,7 @@ main (int argc, char **argv)
if (ev.xreparent.parent == root)
add_win (dpy, ev.xreparent.window, 0);
else
destroy_win (dpy, ev.xreparent.window, False, True);
destroy_win (dpy, ev.xreparent.window, True);
break;
case CirculateNotify:
circulate_win (dpy, &ev.xcirculate);
@ -2178,7 +2163,7 @@ main (int argc, char **argv)
{
if (fadeTrans)
set_fade (dpy, w, w->opacity*1.0/OPAQUE, get_opacity_percent (dpy, w, 1.0),
fade_out_step, 0, False, True, False);
fade_out_step, 0, True, False);
else
{
w->opacity = get_opacity_prop(dpy, w, OPAQUE);