Dogcows Code - chaz/openbox/blob - openbox/grab.c

   1 #include "openbox.h"
   2 #include "event.h"
   3 #include "xerror.h"
   4
   5 #include <glib.h>
   6 #include <X11/Xlib.h>
   7
   8 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | PointerMotionMask)
   9 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
  10
  11 #define MASK_LIST_SIZE 8
  12
  13 /*! A list of all possible combinations of keyboard lock masks */
  14 static unsigned int mask_list[MASK_LIST_SIZE];
  15
  16 gboolean grab_keyboard(gboolean grab)
  17 {
  18     static guint kgrabs = 0;
  19     gboolean ret = FALSE;
  20
  21     if (grab) {
  22         if (kgrabs++ == 0)
  23             ret = XGrabKeyboard(ob_display, ob_root, FALSE, GrabModeAsync,
  24                                 GrabModeAsync, event_lasttime) == Success;
  25     } else if (kgrabs > 0) {
  26         if (--kgrabs == 0)
  27             XUngrabKeyboard(ob_display, event_lasttime);
  28     }
  29     return ret;
  30 }
  31
  32 gboolean grab_pointer(gboolean grab, Cursor cur)
  33 {
  34     static guint pgrabs = 0;
  35     gboolean ret = FALSE;
  36
  37     if (grab) {
  38         if (pgrabs++ == 0)
  39             ret = XGrabPointer(ob_display, ob_root, False, GRAB_PTR_MASK,
  40                                GrabModeAsync, GrabModeAsync, FALSE, cur,
  41                                event_lasttime) == Success;
  42     } else if (pgrabs > 0) {
  43         if (--pgrabs == 0)
  44             XUngrabPointer(ob_display, event_lasttime);
  45     }
  46     return ret;
  47 }
  48
  49 gboolean grab_pointer_window(gboolean grab, Cursor cur, Window win)
  50 {
  51     static guint pgrabs = 0;
  52     gboolean ret = FALSE;
  53
  54     if (grab) {
  55         if (pgrabs++ == 0)
  56             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  57                                GrabModeAsync, GrabModeAsync, TRUE, cur,
  58                                event_lasttime) == Success;
  59     } else if (pgrabs > 0) {
  60         if (--pgrabs == 0)
  61             XUngrabPointer(ob_display, event_lasttime);
  62     }
  63     return ret;
  64 }
  65
  66 int grab_server(gboolean grab)
  67 {
  68     static guint sgrabs = 0;
  69     if (grab) {
  70         if (sgrabs++ == 0) {
  71             XGrabServer(ob_display);
  72             XSync(ob_display, FALSE);
  73         }
  74     } else if (sgrabs > 0) {
  75         if (--sgrabs == 0) {
  76             XUngrabServer(ob_display);
  77             XFlush(ob_display);
  78         }
  79     }
  80     return sgrabs;
  81 }
  82
  83 void grab_startup()
  84 {
  85     guint i = 0;
  86
  87     mask_list[i++] = 0;
  88     mask_list[i++] = LockMask;
  89     mask_list[i++] = NumLockMask;
  90     mask_list[i++] = LockMask | NumLockMask;
  91     mask_list[i++] = ScrollLockMask;
  92     mask_list[i++] = ScrollLockMask | LockMask;
  93     mask_list[i++] = ScrollLockMask | NumLockMask;
  94     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
  95     g_assert(i == MASK_LIST_SIZE);
  96 }
  97
  98 void grab_shutdown()
  99 {
 100     while (grab_keyboard(FALSE));
 101     while (grab_pointer(FALSE, None));
 102     while (grab_pointer_window(FALSE, None, None));
 103     while (grab_server(FALSE));
 104 }
 105
 106 void grab_button_full(guint button, guint state, Window win, guint mask,
 107                       int pointer_mode, Cursor cursor)
 108 {
 109     guint i;
 110
 111     for (i = 0; i < MASK_LIST_SIZE; ++i)
 112         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 113                     pointer_mode, GrabModeSync, None, cursor);
 114 }
 115
 116 void grab_button(guint button, guint state, Window win, guint mask)
 117 {
 118     grab_button_full(button, state, win, mask, GrabModeAsync, None);
 119 }
 120
 121 void ungrab_button(guint button, guint state, Window win)
 122 {
 123     guint i;
 124
 125     for (i = 0; i < MASK_LIST_SIZE; ++i)
 126         XUngrabButton(ob_display, button, state | mask_list[i], win);
 127 }
 128
 129 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 130 {
 131     guint i;
 132
 133     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 134     xerror_occured = FALSE;
 135     for (i = 0; i < MASK_LIST_SIZE; ++i)
 136         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 137                  GrabModeSync, keyboard_mode);
 138     xerror_set_ignore(FALSE);
 139     if (xerror_occured)
 140         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 141 }
 142
 143 void ungrab_all_keys(Window win)
 144 {
 145     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 146 }