src/lib/ecore_x/xcb/ecore_xcb_xinerama.c

   1 #include "ecore_xcb_private.h"
   2 #ifdef ECORE_XCB_XINERAMA
   3 # include <xcb/xinerama.h>
   4 #endif
   5
   6 /* local variables */
   7 static Eina_Bool _xinerama_avail = EINA_FALSE;
   8 static Eina_Bool _xinerama_active = EINA_FALSE;
   9
  10 void
  11 _ecore_xcb_xinerama_init(void)
  12 {
  13    LOGFN(__FILE__, __LINE__, __FUNCTION__);
  14
  15 #ifdef ECORE_XCB_XINERAMA
  16    xcb_prefetch_extension_data(_ecore_xcb_conn, &xcb_xinerama_id);
  17 #endif
  18 }
  19
  20 void
  21 _ecore_xcb_xinerama_finalize(void)
  22 {
  23 #ifdef ECORE_XCB_XINERAMA
  24    const xcb_query_extension_reply_t *ext_reply;
  25 #endif
  26
  27    LOGFN(__FILE__, __LINE__, __FUNCTION__);
  28
  29 #ifdef ECORE_XCB_XINERAMA
  30    ext_reply = xcb_get_extension_data(_ecore_xcb_conn, &xcb_xinerama_id);
  31    if ((ext_reply) && (ext_reply->present))
  32      {
  33         xcb_xinerama_query_version_cookie_t cookie;
  34         xcb_xinerama_query_version_reply_t *reply;
  35
  36         cookie =
  37           xcb_xinerama_query_version_unchecked(_ecore_xcb_conn,
  38                                                XCB_XINERAMA_MAJOR_VERSION,
  39                                                XCB_XINERAMA_MINOR_VERSION);
  40         reply =
  41           xcb_xinerama_query_version_reply(_ecore_xcb_conn, cookie, NULL);
  42         if (reply)
  43           {
  44              _xinerama_avail = EINA_TRUE;
  45              // NB: Do we need to compare version numbers here ?
  46              free(reply);
  47           }
  48
  49         if (_xinerama_avail)
  50           {
  51              xcb_xinerama_is_active_cookie_t acookie;
  52              xcb_xinerama_is_active_reply_t *areply;
  53
  54              acookie = xcb_xinerama_is_active_unchecked(_ecore_xcb_conn);
  55              areply =
  56                xcb_xinerama_is_active_reply(_ecore_xcb_conn, acookie, NULL);
  57              if (areply)
  58                {
  59                   _xinerama_active = areply->state;
  60                   free(areply);
  61                }
  62           }
  63      }
  64 #endif
  65 }
  66
  67 EAPI int
  68 ecore_x_xinerama_screen_count_get(void)
  69 {
  70    int count = 0;
  71 #ifdef ECORE_XCB_XINERAMA
  72    xcb_xinerama_query_screens_cookie_t cookie;
  73    xcb_xinerama_query_screens_reply_t *reply;
  74 #endif
  75
  76    LOGFN(__FILE__, __LINE__, __FUNCTION__);
  77    CHECK_XCB_CONN;
  78
  79    if (!_xinerama_avail) return 0;
  80
  81 #ifdef ECORE_XCB_XINERAMA
  82    cookie = xcb_xinerama_query_screens_unchecked(_ecore_xcb_conn);
  83    reply =
  84      xcb_xinerama_query_screens_reply(_ecore_xcb_conn, cookie, NULL);
  85    if (!reply) return 0;
  86    count = reply->number;
  87 #endif
  88
  89    return count;
  90 }
  91
  92 EAPI Eina_Bool
  93 ecore_x_xinerama_screen_geometry_get(int  screen,
  94                                      int *x,
  95                                      int *y,
  96                                      int *w,
  97                                      int *h)
  98 {
  99 #ifdef ECORE_XCB_XINERAMA
 100    xcb_xinerama_query_screens_cookie_t cookie;
 101    xcb_xinerama_query_screens_reply_t *reply;
 102    xcb_xinerama_screen_info_t *info;
 103 #endif
 104
 105    LOGFN(__FILE__, __LINE__, __FUNCTION__);
 106    CHECK_XCB_CONN;
 107
 108    if (x) *x = 0;
 109    if (y) *y = 0;
 110    if (w) *w = ((xcb_screen_t *)_ecore_xcb_screen)->width_in_pixels;
 111    if (h) *h = ((xcb_screen_t *)_ecore_xcb_screen)->height_in_pixels;
 112
 113    if (!_xinerama_avail) return EINA_FALSE;
 114
 115 #ifdef ECORE_XCB_XINERAMA
 116    cookie = xcb_xinerama_query_screens_unchecked(_ecore_xcb_conn);
 117    reply =
 118      xcb_xinerama_query_screens_reply(_ecore_xcb_conn, cookie, NULL);
 119    if (!reply) return EINA_FALSE;
 120
 121    info = xcb_xinerama_query_screens_screen_info(reply);
 122    if (!info)
 123      {
 124         free(reply);
 125         return EINA_FALSE;
 126      }
 127
 128    if (x) *x = info[screen].x_org;
 129    if (y) *y = info[screen].y_org;
 130    if (w) *w = info[screen].width;
 131    if (h) *h = info[screen].height;
 132
 133    free(reply);
 134    return EINA_TRUE;
 135 #endif
 136
 137    return EINA_FALSE;
 138 }
 139