src/lib/ecore_x/xcb/ecore_xcb_mwm.c

   1 /*
   2  * Various MWM related functions.
   3  *
   4  * This is ALL the code involving anything MWM related. for both WM and
   5  * client.
   6  */
   7
   8 #include "ecore_xcb_private.h"
   9 #include "Ecore_X_Atoms.h"
  10
  11 /**
  12  * @defgroup Ecore_X_MWM_Group MWM related functions.
  13  *
  14  * Functions related to MWM.
  15  */
  16
  17 #define ECORE_X_MWM_HINTS_FUNCTIONS   (1 << 0)
  18 #define ECORE_X_MWM_HINTS_DECORATIONS (1 << 1)
  19 #define ECORE_X_MWM_HINTS_INPUT_MODE  (1 << 2)
  20 #define ECORE_X_MWM_HINTS_STATUS      (1 << 3)
  21
  22 typedef struct _mwmhints
  23 {
  24    uint32_t flags;
  25    uint32_t functions;
  26    uint32_t decorations;
  27    int32_t  inputmode;
  28    uint32_t status;
  29 }
  30 MWMHints;
  31
  32 /**
  33  * Sends the GetProperty request.
  34  * @param window Window whose MWM hints are requested.
  35  * @ingroup Ecore_X_MWM_Group
  36  */
  37 EAPI void
  38 ecore_x_mwm_hints_get_prefetch(Ecore_X_Window window)
  39 {
  40    xcb_get_property_cookie_t cookie;
  41
  42    cookie = xcb_get_property_unchecked(_ecore_xcb_conn, 0,
  43                                        window ? window : ((xcb_screen_t *)_ecore_xcb_screen)->root,
  44                                        ECORE_X_ATOM_MOTIF_WM_HINTS,
  45                                        ECORE_X_ATOM_MOTIF_WM_HINTS,
  46                                        0, LONG_MAX);
  47    _ecore_xcb_cookie_cache(cookie.sequence);
  48 } /* ecore_x_mwm_hints_get_prefetch */
  49
  50 /**
  51  * Gets the reply of the GetProperty request sent by ecore_x_mwm_hints_get_prefetch().
  52  * @ingroup Ecore_X_MWM_Group
  53  */
  54 EAPI void
  55 ecore_x_mwm_hints_get_fetch(void)
  56 {
  57    xcb_get_property_cookie_t cookie;
  58    xcb_get_property_reply_t *reply;
  59
  60    cookie.sequence = _ecore_xcb_cookie_get();
  61    reply = xcb_get_property_reply(_ecore_xcb_conn, cookie, NULL);
  62    _ecore_xcb_reply_cache(reply);
  63 } /* ecore_x_mwm_hints_get_fetch */
  64
  65 /**
  66  * To document.
  67  * @param  window Unused.
  68  * @param  fhint To document.
  69  * @param  dhint To document.
  70  * @param  ihint To document.
  71  * @return       1 on success, 0 otherwise.
  72  *
  73  * To use this function, you must call before, and in order,
  74  * ecore_x_mwm_hints_get_prefetch(), which sends the GetProperty request,
  75  * then ecore_x_mwm_hints_get_fetch(), which gets the reply.
  76  * @ingroup Ecore_X_MWM_Group
  77  */
  78 EAPI int
  79 ecore_x_mwm_hints_get(Ecore_X_Window window   __UNUSED__,
  80                       Ecore_X_MWM_Hint_Func  *fhint,
  81                       Ecore_X_MWM_Hint_Decor *dhint,
  82                       Ecore_X_MWM_Hint_Input *ihint)
  83 {
  84    MWMHints *mwmhints = NULL;
  85    int ret = 0;
  86    xcb_get_property_reply_t *reply;
  87
  88    reply = _ecore_xcb_reply_get();
  89    if (!reply)
  90       return 0;
  91
  92    if ((reply->format != 32) ||
  93        (reply->value_len == 0))
  94       return 0;
  95
  96    mwmhints = xcb_get_property_value(reply);
  97    if (reply->value_len >= 4)
  98      {
  99         if (dhint)
 100           {
 101              if (mwmhints->flags & ECORE_X_MWM_HINTS_DECORATIONS)
 102                 *dhint = mwmhints->decorations;
 103              else
 104                 *dhint = ECORE_X_MWM_HINT_DECOR_ALL;
 105           }
 106
 107         if (fhint)
 108           {
 109              if (mwmhints->flags & ECORE_X_MWM_HINTS_FUNCTIONS)
 110                 *fhint = mwmhints->functions;
 111              else
 112                 *fhint = ECORE_X_MWM_HINT_FUNC_ALL;
 113           }
 114
 115         if (ihint)
 116           {
 117              if (mwmhints->flags & ECORE_X_MWM_HINTS_INPUT_MODE)
 118                 *ihint = mwmhints->inputmode;
 119              else
 120                 *ihint = ECORE_X_MWM_HINT_INPUT_MODELESS;
 121           }
 122
 123         ret = 1;
 124      }
 125
 126    return ret;
 127 } /* ecore_x_mwm_hints_get */
 128
 129 /**
 130  * Sets the borderless flag of a window using MWM.
 131  * @param window     The window.
 132  * @param borderless The borderless flag.
 133  * @ingroup Ecore_X_MWM_Group
 134  */
 135 EAPI void
 136 ecore_x_mwm_borderless_set(Ecore_X_Window window,
 137                            int            borderless)
 138 {
 139    uint32_t data[5] = {0, 0, 0, 0, 0};
 140
 141    data[0] = 2; /* just set the decorations hint! */
 142    data[2] = !borderless;
 143
 144    if (window == 0)
 145       window = ((xcb_screen_t *)_ecore_xcb_screen)->root;
 146
 147    xcb_change_property(_ecore_xcb_conn, XCB_PROP_MODE_REPLACE, window,
 148                        ECORE_X_ATOM_MOTIF_WM_HINTS, ECORE_X_ATOM_MOTIF_WM_HINTS,
 149                        32, 5, data);
 150 } /* ecore_x_mwm_borderless_set */
 151