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