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     g_message("grabs: %d", kgrabs);
  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, RootWindow(ob_display, ob_screen),
  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 int 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()
  99 {
 100     guint i = 0;
 101
 102     mask_list[i++] = 0;
 103     mask_list[i++] = LockMask;
 104     mask_list[i++] = NumLockMask;
 105     mask_list[i++] = LockMask | NumLockMask;
 106     mask_list[i++] = ScrollLockMask;
 107     mask_list[i++] = ScrollLockMask | LockMask;
 108     mask_list[i++] = ScrollLockMask | NumLockMask;
 109     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 110     g_assert(i == MASK_LIST_SIZE);
 111 }
 112
 113 void grab_shutdown()
 114 {
 115     while (grab_keyboard(FALSE));
 116     while (grab_pointer(FALSE, None));
 117     while (grab_pointer_window(FALSE, None, None));
 118     while (grab_server(FALSE));
 119 }
 120
 121 void grab_button_full(guint button, guint state, Window win, guint mask,
 122                       int pointer_mode, ObCursor cur)
 123 {
 124     guint i;
 125
 126     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 127     xerror_occured = FALSE;
 128     for (i = 0; i < MASK_LIST_SIZE; ++i)
 129         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 130                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 131     xerror_set_ignore(FALSE);
 132     if (xerror_occured)
 133         g_warning("failed to grab button %d modifiers %d", button, state);
 134 }
 135
 136 void grab_button(guint button, guint state, Window win, guint mask)
 137 {
 138     grab_button_full(button, state, win, mask, GrabModeAsync, None);
 139 }
 140
 141 void ungrab_button(guint button, guint state, Window win)
 142 {
 143     guint i;
 144
 145     for (i = 0; i < MASK_LIST_SIZE; ++i)
 146         XUngrabButton(ob_display, button, state | mask_list[i], win);
 147 }
 148
 149 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 150 {
 151     guint i;
 152
 153     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 154     xerror_occured = FALSE;
 155     for (i = 0; i < MASK_LIST_SIZE; ++i)
 156         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 157                  GrabModeSync, keyboard_mode);
 158     xerror_set_ignore(FALSE);
 159     if (xerror_occured)
 160         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 161 }
 162
 163 void ungrab_all_keys(Window win)
 164 {
 165     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 166 }