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, RootWindow(ob_display, ob_screen),
  24                                 FALSE, GrabModeAsync, GrabModeAsync,
  25                                 event_lasttime) == Success;
  26         else
  27             ret = TRUE;
  28     } else if (kgrabs > 0) {
  29         if (--kgrabs == 0)
  30             XUngrabKeyboard(ob_display, event_lasttime);
  31         ret = TRUE;
  32     }
  33     return ret;
  34 }
  35
  36 gboolean grab_pointer(gboolean grab, ObCursor cur)
  37 {
  38     static guint pgrabs = 0;
  39     gboolean ret = FALSE;
  40
  41     if (grab) {
  42         if (pgrabs++ == 0)
  43             ret = XGrabPointer(ob_display, RootWindow(ob_display, ob_screen),
  44                                False, GRAB_PTR_MASK, GrabModeAsync,
  45                                GrabModeAsync, FALSE,
  46                                ob_cursor(cur), event_lasttime) == Success;
  47         else
  48             ret = TRUE;
  49     } else if (pgrabs > 0) {
  50         if (--pgrabs == 0)
  51             XUngrabPointer(ob_display, event_lasttime);
  52         ret = TRUE;
  53     }
  54     return ret;
  55 }
  56
  57 gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
  58 {
  59     static guint pgrabs = 0;
  60     gboolean ret = FALSE;
  61
  62     if (grab) {
  63         if (pgrabs++ == 0)
  64             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  65                                GrabModeAsync, GrabModeAsync, TRUE,
  66                                ob_cursor(cur),
  67                                event_lasttime) == Success;
  68         else
  69             ret = TRUE;
  70     } else if (pgrabs > 0) {
  71         if (--pgrabs == 0)
  72             XUngrabPointer(ob_display, event_lasttime);
  73         ret = TRUE;
  74     }
  75     return ret;
  76 }
  77
  78 int grab_server(gboolean grab)
  79 {
  80     static guint sgrabs = 0;
  81     if (grab) {
  82         if (sgrabs++ == 0) {
  83             XGrabServer(ob_display);
  84             XSync(ob_display, FALSE);
  85         }
  86     } else if (sgrabs > 0) {
  87         if (--sgrabs == 0) {
  88             XUngrabServer(ob_display);
  89             XFlush(ob_display);
  90         }
  91     }
  92     return sgrabs;
  93 }
  94
  95 void grab_startup()
  96 {
  97     guint i = 0;
  98
  99     mask_list[i++] = 0;
 100     mask_list[i++] = LockMask;
 101     mask_list[i++] = NumLockMask;
 102     mask_list[i++] = LockMask | NumLockMask;
 103     mask_list[i++] = ScrollLockMask;
 104     mask_list[i++] = ScrollLockMask | LockMask;
 105     mask_list[i++] = ScrollLockMask | NumLockMask;
 106     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 107     g_assert(i == MASK_LIST_SIZE);
 108 }
 109
 110 void grab_shutdown()
 111 {
 112     while (grab_keyboard(FALSE));
 113     while (grab_pointer(FALSE, None));
 114     while (grab_pointer_window(FALSE, None, None));
 115     while (grab_server(FALSE));
 116 }
 117
 118 void grab_button_full(guint button, guint state, Window win, guint mask,
 119                       int pointer_mode, ObCursor cur)
 120 {
 121     guint i;
 122
 123     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 124     xerror_occured = FALSE;
 125     for (i = 0; i < MASK_LIST_SIZE; ++i)
 126         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 127                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 128     xerror_set_ignore(FALSE);
 129     if (xerror_occured)
 130         g_warning("failed to grab button %d modifiers %d", button, state);
 131 }
 132
 133 void grab_button(guint button, guint state, Window win, guint mask)
 134 {
 135     grab_button_full(button, state, win, mask, GrabModeAsync, None);
 136 }
 137
 138 void ungrab_button(guint button, guint state, Window win)
 139 {
 140     guint i;
 141
 142     for (i = 0; i < MASK_LIST_SIZE; ++i)
 143         XUngrabButton(ob_display, button, state | mask_list[i], win);
 144 }
 145
 146 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 147 {
 148     guint i;
 149
 150     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 151     xerror_occured = FALSE;
 152     for (i = 0; i < MASK_LIST_SIZE; ++i)
 153         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 154                  GrabModeSync, keyboard_mode);
 155     xerror_set_ignore(FALSE);
 156     if (xerror_occured)
 157         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 158 }
 159
 160 void ungrab_all_keys(Window win)
 161 {
 162     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 163 }