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 #include "screen.h"
   6
   7 #include <glib.h>
   8 #include <X11/Xlib.h>
   9
  10 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | PointerMotionMask)
  11 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
  12
  13 #define MASK_LIST_SIZE 8
  14
  15 /*! A list of all possible combinations of keyboard lock masks */
  16 static unsigned int mask_list[MASK_LIST_SIZE];
  17
  18 gboolean grab_keyboard(gboolean grab)
  19 {
  20     static guint kgrabs = 0;
  21     gboolean ret = FALSE;
  22
  23     if (grab) {
  24         if (kgrabs++ == 0)
  25             ret = XGrabKeyboard(ob_display, RootWindow(ob_display, ob_screen),
  26                                 FALSE, GrabModeAsync, GrabModeAsync,
  27                                 event_lasttime) == Success;
  28         else
  29             ret = TRUE;
  30     } else if (kgrabs > 0) {
  31         if (--kgrabs == 0)
  32             XUngrabKeyboard(ob_display, event_lasttime);
  33         ret = TRUE;
  34     }
  35
  36     return ret;
  37 }
  38
  39 gboolean grab_pointer(gboolean grab, ObCursor cur)
  40 {
  41     static guint pgrabs = 0;
  42     gboolean ret = FALSE;
  43
  44     if (grab) {
  45         if (pgrabs++ == 0)
  46             ret = XGrabPointer(ob_display, screen_support_win,
  47                                False, GRAB_PTR_MASK, GrabModeAsync,
  48                                GrabModeAsync, FALSE,
  49                                ob_cursor(cur), event_lasttime) == Success;
  50         else
  51             ret = TRUE;
  52     } else if (pgrabs > 0) {
  53         if (--pgrabs == 0)
  54             XUngrabPointer(ob_display, event_lasttime);
  55         ret = TRUE;
  56     }
  57     return ret;
  58 }
  59
  60 gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
  61 {
  62     static guint pgrabs = 0;
  63     gboolean ret = FALSE;
  64
  65     if (grab) {
  66         if (pgrabs++ == 0)
  67             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  68                                GrabModeAsync, GrabModeAsync, TRUE,
  69                                ob_cursor(cur),
  70                                event_lasttime) == Success;
  71         else
  72             ret = TRUE;
  73     } else if (pgrabs > 0) {
  74         if (--pgrabs == 0)
  75             XUngrabPointer(ob_display, event_lasttime);
  76         ret = TRUE;
  77     }
  78     return ret;
  79 }
  80
  81 gint grab_server(gboolean grab)
  82 {
  83     static guint sgrabs = 0;
  84     if (grab) {
  85         if (sgrabs++ == 0) {
  86             XGrabServer(ob_display);
  87             XSync(ob_display, FALSE);
  88         }
  89     } else if (sgrabs > 0) {
  90         if (--sgrabs == 0) {
  91             XUngrabServer(ob_display);
  92             XFlush(ob_display);
  93         }
  94     }
  95     return sgrabs;
  96 }
  97
  98 void grab_startup(gboolean reconfig)
  99 {
 100     guint i = 0;
 101
 102     if (reconfig) return;
 103
 104     mask_list[i++] = 0;
 105     mask_list[i++] = LockMask;
 106     mask_list[i++] = NumLockMask;
 107     mask_list[i++] = LockMask | NumLockMask;
 108     mask_list[i++] = ScrollLockMask;
 109     mask_list[i++] = ScrollLockMask | LockMask;
 110     mask_list[i++] = ScrollLockMask | NumLockMask;
 111     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 112     g_assert(i == MASK_LIST_SIZE);
 113 }
 114
 115 void grab_shutdown(gboolean reconfig)
 116 {
 117     if (reconfig) return;
 118
 119     while (grab_keyboard(FALSE));
 120     while (grab_pointer(FALSE, OB_CURSOR_NONE));
 121     while (grab_pointer_window(FALSE, OB_CURSOR_NONE, None));
 122     while (grab_server(FALSE));
 123 }
 124
 125 void grab_button_full(guint button, guint state, Window win, guint mask,
 126                       int pointer_mode, ObCursor cur)
 127 {
 128     guint i;
 129
 130     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 131     xerror_occured = FALSE;
 132     for (i = 0; i < MASK_LIST_SIZE; ++i)
 133         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 134                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 135     xerror_set_ignore(FALSE);
 136     if (xerror_occured)
 137         g_warning("failed to grab button %d modifiers %d", button, state);
 138 }
 139
 140 void grab_button(guint button, guint state, Window win, guint mask)
 141 {
 142     grab_button_full(button, state, win, mask, GrabModeAsync, OB_CURSOR_NONE);
 143 }
 144
 145 void ungrab_button(guint button, guint state, Window win)
 146 {
 147     guint i;
 148
 149     for (i = 0; i < MASK_LIST_SIZE; ++i)
 150         XUngrabButton(ob_display, button, state | mask_list[i], win);
 151 }
 152
 153 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 154 {
 155     guint i;
 156
 157     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 158     xerror_occured = FALSE;
 159     for (i = 0; i < MASK_LIST_SIZE; ++i)
 160         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 161                  GrabModeAsync, keyboard_mode);
 162     xerror_set_ignore(FALSE);
 163     if (xerror_occured)
 164         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 165 }
 166
 167 void ungrab_all_keys(Window win)
 168 {
 169     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 170 }