xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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present_notify.c (3268B)

      1 /*
      2  * Copyright © 2013 Keith Packard
      3  *
      4  * Permission to use, copy, modify, distribute, and sell this software and its
      5  * documentation for any purpose is hereby granted without fee, provided that
      6  * the above copyright notice appear in all copies and that both that copyright
      7  * notice and this permission notice appear in supporting documentation, and
      8  * that the name of the copyright holders not be used in advertising or
      9  * publicity pertaining to distribution of the software without specific,
     10  * written prior permission.  The copyright holders make no representations
     11  * about the suitability of this software for any purpose.  It is provided "as
     12  * is" without express or implied warranty.
     13  *
     14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
     16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     20  * OF THIS SOFTWARE.
     21  */
     22 
     23 #include "present_priv.h"
     24 
     25 /*
     26  * Mark all pending notifies for 'window' as invalid when
     27  * the window is destroyed
     28  */
     29 
     30 void
     31 present_clear_window_notifies(WindowPtr window)
     32 {
     33     present_notify_ptr          notify;
     34     present_window_priv_ptr     window_priv = present_window_priv(window);
     35 
     36     if (!window_priv)
     37         return;
     38 
     39     xorg_list_for_each_entry(notify, &window_priv->notifies, window_list) {
     40         notify->window = NULL;
     41     }
     42 }
     43 
     44 /*
     45  * 'notify' is being freed; remove it from the window's notify list
     46  */
     47 
     48 void
     49 present_free_window_notify(present_notify_ptr notify)
     50 {
     51     xorg_list_del(&notify->window_list);
     52 }
     53 
     54 /*
     55  * 'notify' is new; add it to the specified window
     56  */
     57 
     58 int
     59 present_add_window_notify(present_notify_ptr notify)
     60 {
     61     WindowPtr                   window = notify->window;
     62     present_window_priv_ptr     window_priv = present_get_window_priv(window, TRUE);
     63 
     64     if (!window_priv)
     65         return BadAlloc;
     66 
     67     xorg_list_add(&notify->window_list, &window_priv->notifies);
     68     return Success;
     69 }
     70 
     71 int
     72 present_create_notifies(ClientPtr client, int num_notifies, xPresentNotify *x_notifies, present_notify_ptr *p_notifies)
     73 {
     74     present_notify_ptr  notifies;
     75     int                 i;
     76     int                 added = 0;
     77     int                 status;
     78 
     79     notifies = calloc (num_notifies, sizeof (present_notify_rec));
     80     if (!notifies)
     81         return BadAlloc;
     82 
     83     for (i = 0; i < num_notifies; i++) {
     84         status = dixLookupWindow(&notifies[i].window, x_notifies[i].window, client, DixGetAttrAccess);
     85         if (status != Success)
     86             goto bail;
     87 
     88         notifies[i].serial = x_notifies[i].serial;
     89         status = present_add_window_notify(&notifies[i]);
     90         if (status != Success)
     91             goto bail;
     92 
     93         added = i;
     94     }
     95     return Success;
     96 
     97 bail:
     98     present_destroy_notifies(notifies, added);
     99     return status;
    100 }
    101 
    102 void
    103 present_destroy_notifies(present_notify_ptr notifies, int num_notifies)
    104 {
    105     int i;
    106     for (i = 0; i < num_notifies; i++)
    107         present_free_window_notify(&notifies[i]);
    108 
    109     free(notifies);
    110 }