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

   1 #include "grab.h"
   2 #include "openbox.h"
   3 #include "event.h"
   4 #include "xerror.h"
   5
   6 #include <glib.h>
   7 #include <X11/Xlib.h>
   8
   9 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | PointerMotionMask)
  10 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
  11
  12 #define MASK_LIST_SIZE 8
  13
  14 /*! A list of all possible combinations of keyboard lock masks */
  15 static unsigned int mask_list[MASK_LIST_SIZE];
  16
  17 gboolean grab_keyboard(gboolean grab)
  18 {
  19     static guint kgrabs = 0;
  20     gboolean ret = FALSE;
  21
  22     if (grab) {
  23         if (kgrabs++ == 0)
  24             ret = XGrabKeyboard(ob_display, RootWindow(ob_display, ob_screen),
  25                                 FALSE, GrabModeAsync, GrabModeAsync,
  26                                 event_lasttime) == Success;
  27         else
  28             ret = TRUE;
  29     } else if (kgrabs > 0) {
  30         if (--kgrabs == 0)
  31             XUngrabKeyboard(ob_display, event_lasttime);
  32         ret = TRUE;
  33     }
  34
  35     return ret;
  36 }
  37
  38 gboolean grab_pointer(gboolean grab, ObCursor cur)
  39 {
  40     static guint pgrabs = 0;
  41     gboolean ret = FALSE;
  42
  43     if (grab) {
  44         if (pgrabs++ == 0)
  45             ret = XGrabPointer(ob_display, RootWindow(ob_display, ob_screen),
  46                                False, GRAB_PTR_MASK, GrabModeAsync,
  47                                GrabModeAsync, FALSE,
  48                                ob_cursor(cur), event_lasttime) == Success;
  49         else
  50             ret = TRUE;
  51     } else if (pgrabs > 0) {
  52         if (--pgrabs == 0)
  53             XUngrabPointer(ob_display, event_lasttime);
  54         ret = TRUE;
  55     }
  56     return ret;
  57 }
  58
  59 gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
  60 {
  61     static guint pgrabs = 0;
  62     gboolean ret = FALSE;
  63
  64     if (grab) {
  65         if (pgrabs++ == 0)
  66             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  67                                GrabModeAsync, GrabModeAsync, TRUE,
  68                                ob_cursor(cur),
  69                                event_lasttime) == Success;
  70         else
  71             ret = TRUE;
  72     } else if (pgrabs > 0) {
  73         if (--pgrabs == 0)
  74             XUngrabPointer(ob_display, event_lasttime);
  75         ret = TRUE;
  76     }
  77     return ret;
  78 }
  79
  80 gint grab_server(gboolean grab)
  81 {
  82     static guint sgrabs = 0;
  83     if (grab) {
  84         if (sgrabs++ == 0) {
  85             XGrabServer(ob_display);
  86             XSync(ob_display, FALSE);
  87         }
  88     } else if (sgrabs > 0) {
  89         if (--sgrabs == 0) {
  90             XUngrabServer(ob_display);
  91             XFlush(ob_display);
  92         }
  93     }
  94     return sgrabs;
  95 }
  96
  97 void grab_startup(gboolean reconfig)
  98 {
  99     guint i = 0;
 100
 101     if (reconfig) return;
 102
 103     mask_list[i++] = 0;
 104     mask_list[i++] = LockMask;
 105     mask_list[i++] = NumLockMask;
 106     mask_list[i++] = LockMask | NumLockMask;
 107     mask_list[i++] = ScrollLockMask;
 108     mask_list[i++] = ScrollLockMask | LockMask;
 109     mask_list[i++] = ScrollLockMask | NumLockMask;
 110     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 111     g_assert(i == MASK_LIST_SIZE);
 112 }
 113
 114 void grab_shutdown(gboolean reconfig)
 115 {
 116     if (reconfig) return;
 117
 118     while (grab_keyboard(FALSE));
 119     while (grab_pointer(FALSE, OB_CURSOR_NONE));
 120     while (grab_pointer_window(FALSE, OB_CURSOR_NONE, None));
 121     while (grab_server(FALSE));
 122 }
 123
 124 void grab_button_full(guint button, guint state, Window win, guint mask,
 125                       int pointer_mode, ObCursor cur)
 126 {
 127     guint i;
 128
 129     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 130     xerror_occured = FALSE;
 131     for (i = 0; i < MASK_LIST_SIZE; ++i)
 132         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 133                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 134     xerror_set_ignore(FALSE);
 135     if (xerror_occured)
 136         g_warning("failed to grab button %d modifiers %d", button, state);
 137 }
 138
 139 void grab_button(guint button, guint state, Window win, guint mask)
 140 {
 141     grab_button_full(button, state, win, mask, GrabModeAsync, OB_CURSOR_NONE);
 142 }
 143
 144 void ungrab_button(guint button, guint state, Window win)
 145 {
 146     guint i;
 147
 148     for (i = 0; i < MASK_LIST_SIZE; ++i)
 149         XUngrabButton(ob_display, button, state | mask_list[i], win);
 150 }
 151
 152 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 153 {
 154     guint i;
 155
 156     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 157     xerror_occured = FALSE;
 158     for (i = 0; i < MASK_LIST_SIZE; ++i)
 159         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 160                  GrabModeAsync, keyboard_mode);
 161     xerror_set_ignore(FALSE);
 162     if (xerror_occured)
 163         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 164 }
 165
 166 void ungrab_all_keys(Window win)
 167 {
 168     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 169 }