dri3_event.c

   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 #ifdef HAVE_XORG_CONFIG_H
  24 #include <xorg-config.h>
  25 #endif
  26
  27 #include "dri3_priv.h"
  28
  29 RESTYPE dri3_event_type;
  30
  31 static int
  32 dri3_free_event(pointer data, XID id)
  33 {
  34     dri3_event_ptr dri3_event = (dri3_event_ptr) data;
  35     dri3_window_priv_ptr window_priv = dri3_window_priv(dri3_event->window);
  36     dri3_event_ptr *previous, current;
  37
  38     for (previous = &window_priv->events; (current = *previous); previous = &current->next) {
  39         if (current == dri3_event) {
  40             *previous = dri3_event->next;
  41             break;
  42         }
  43     }
  44     free((pointer) dri3_event);
  45     return 1;
  46
  47 }
  48
  49 void
  50 dri3_free_events(WindowPtr window)
  51 {
  52     dri3_window_priv_ptr window_priv = dri3_window_priv(window);
  53     dri3_event_ptr event;
  54
  55     if (!window_priv)
  56         return;
  57
  58     while ((event = window_priv->events))
  59         FreeResource(event->id, RT_NONE);
  60 }
  61
  62 static void
  63 dri3_event_swap(xGenericEvent *from, xGenericEvent *to)
  64 {
  65     *to = *from;
  66     swaps(&to->sequenceNumber);
  67     swapl(&to->length);
  68     swaps(&to->evtype);
  69     switch (from->evtype) {
  70     case DRI3_ConfigureNotify: {
  71         xDRI3ConfigureNotify *c = (xDRI3ConfigureNotify *) to;
  72
  73         swapl(&c->eid);
  74         swapl(&c->window);
  75         swaps(&c->x);
  76         swaps(&c->y);
  77         swaps(&c->width);
  78         swaps(&c->height);
  79         swaps(&c->off_x);
  80         swaps(&c->off_y);
  81         swaps(&c->pixmap_width);
  82         swaps(&c->pixmap_height);
  83         swapl(&c->pixmap_flags);
  84         break;
  85     }
  86     }
  87 }
  88
  89 void
  90 dri3_send_config_notify(WindowPtr window, int x, int y, int w, int h, int bw, WindowPtr sibling)
  91 {
  92     dri3_window_priv_ptr window_priv = dri3_window_priv(window);
  93
  94     if (window_priv) {
  95         xDRI3ConfigureNotify cn = {
  96             .type = GenericEvent,
  97             .extension = dri3_request,
  98             .length = (sizeof(xDRI3ConfigureNotify) - 32) >> 2,
  99             .evtype = DRI3_ConfigureNotify,
 100             .eid = 0,
 101             .window = window->drawable.id,
 102             .x = x,
 103             .y = y,
 104             .width = w,
 105             .height = h,
 106             .off_x = 0,
 107             .off_y = 0,
 108             .pixmap_width = w,
 109             .pixmap_height = h,
 110             .pixmap_flags = 0
 111         };
 112         dri3_event_ptr event;
 113         dri3_screen_priv_ptr screen_priv = dri3_screen_priv(window->drawable.pScreen);
 114
 115         if (screen_priv->info && screen_priv->info->driver_config)
 116             screen_priv->info->driver_config(window, &cn);
 117
 118         for (event = window_priv->events; event; event = event->next) {
 119             if (event->mask & (1 << DRI3ConfigureNotify)) {
 120                 cn.eid = event->id;
 121                 WriteEventsToClient(event->client, 1, (xEvent *) &cn);
 122             }
 123         }
 124     }
 125 }
 126
 127 int
 128 dri3_select_input(ClientPtr client, XID eid, WindowPtr window, CARD32 mask)
 129 {
 130     dri3_window_priv_ptr window_priv = dri3_window_priv(window);
 131     dri3_event_ptr event;
 132
 133     if (!window_priv)
 134         return BadAlloc;
 135
 136     event = calloc (1, sizeof (dri3_event_rec));
 137     if (!event)
 138         return BadAlloc;
 139
 140     event->client = client;
 141     event->window = window;
 142     event->id = eid;
 143     event->mask = mask;
 144
 145     event->next = window_priv->events;
 146     window_priv->events = event;
 147
 148     if (!AddResource(event->id, dri3_event_type, (pointer) event))
 149         return BadAlloc;
 150
 151     return Success;
 152 }
 153
 154 Bool
 155 dri3_event_init(void)
 156 {
 157     dri3_event_type = CreateNewResourceType(dri3_free_event, "DRI3Event");
 158     if (!dri3_event_type)
 159         return FALSE;
 160
 161     GERegisterExtension(dri3_request, dri3_event_swap);
 162     return TRUE;
 163 }