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
  34     return ret;
  35 }
  36
  37 gboolean grab_pointer(gboolean grab, ObCursor cur)
  38 {
  39     static guint pgrabs = 0;
  40     gboolean ret = FALSE;
  41
  42     if (grab) {
  43         if (pgrabs++ == 0)
  44             ret = XGrabPointer(ob_display, RootWindow(ob_display, ob_screen),
  45                                False, GRAB_PTR_MASK, GrabModeAsync,
  46                                GrabModeAsync, FALSE,
  47                                ob_cursor(cur), event_lasttime) == Success;
  48         else
  49             ret = TRUE;
  50     } else if (pgrabs > 0) {
  51         if (--pgrabs == 0)
  52             XUngrabPointer(ob_display, event_lasttime);
  53         ret = TRUE;
  54     }
  55     return ret;
  56 }
  57
  58 gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
  59 {
  60     static guint pgrabs = 0;
  61     gboolean ret = FALSE;
  62
  63     if (grab) {
  64         if (pgrabs++ == 0)
  65             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  66                                GrabModeAsync, GrabModeAsync, TRUE,
  67                                ob_cursor(cur),
  68                                event_lasttime) == Success;
  69         else
  70             ret = TRUE;
  71     } else if (pgrabs > 0) {
  72         if (--pgrabs == 0)
  73             XUngrabPointer(ob_display, event_lasttime);
  74         ret = TRUE;
  75     }
  76     return ret;
  77 }
  78
  79 int grab_server(gboolean grab)
  80 {
  81     static guint sgrabs = 0;
  82     if (grab) {
  83         if (sgrabs++ == 0) {
  84             XGrabServer(ob_display);
  85             XSync(ob_display, FALSE);
  86         }
  87     } else if (sgrabs > 0) {
  88         if (--sgrabs == 0) {
  89             XUngrabServer(ob_display);
  90             XFlush(ob_display);
  91         }
  92     }
  93     return sgrabs;
  94 }
  95
  96 void grab_startup()
  97 {
  98     guint i = 0;
  99
 100     mask_list[i++] = 0;
 101     mask_list[i++] = LockMask;
 102     mask_list[i++] = NumLockMask;
 103     mask_list[i++] = LockMask | NumLockMask;
 104     mask_list[i++] = ScrollLockMask;
 105     mask_list[i++] = ScrollLockMask | LockMask;
 106     mask_list[i++] = ScrollLockMask | NumLockMask;
 107     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 108     g_assert(i == MASK_LIST_SIZE);
 109 }
 110
 111 void grab_shutdown()
 112 {
 113     while (grab_keyboard(FALSE));
 114     while (grab_pointer(FALSE, OB_CURSOR_NONE));
 115     while (grab_pointer_window(FALSE, OB_CURSOR_NONE, None));
 116     while (grab_server(FALSE));
 117 }
 118
 119 void grab_button_full(guint button, guint state, Window win, guint mask,
 120                       int pointer_mode, ObCursor cur)
 121 {
 122     guint i;
 123
 124     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 125     xerror_occured = FALSE;
 126     for (i = 0; i < MASK_LIST_SIZE; ++i)
 127         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 128                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 129     xerror_set_ignore(FALSE);
 130     if (xerror_occured)
 131         g_warning("failed to grab button %d modifiers %d", button, state);
 132 }
 133
 134 void grab_button(guint button, guint state, Window win, guint mask)
 135 {
 136     grab_button_full(button, state, win, mask, GrabModeAsync, OB_CURSOR_NONE);
 137 }
 138
 139 void ungrab_button(guint button, guint state, Window win)
 140 {
 141     guint i;
 142
 143     for (i = 0; i < MASK_LIST_SIZE; ++i)
 144         XUngrabButton(ob_display, button, state | mask_list[i], win);
 145 }
 146
 147 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 148 {
 149     guint i;
 150
 151     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 152     xerror_occured = FALSE;
 153     for (i = 0; i < MASK_LIST_SIZE; ++i)
 154         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 155                  GrabModeAsync, keyboard_mode);
 156     xerror_set_ignore(FALSE);
 157     if (xerror_occured)
 158         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 159 }
 160
 161 void ungrab_all_keys(Window win)
 162 {
 163     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 164 }