diff options
Diffstat (limited to 'lib/src/sugar-key-grabber.c')
-rw-r--r-- | lib/src/sugar-key-grabber.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/lib/src/sugar-key-grabber.c b/lib/src/sugar-key-grabber.c deleted file mode 100644 index 8c832a7..0000000 --- a/lib/src/sugar-key-grabber.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - * Copyright (C) 2006 Red Hat, Inc - * - * Sugar is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * Sugar is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <X11/X.h> -#include <gdk/gdkscreen.h> -#include <gdk/gdkx.h> -#include <gdk/gdk.h> - -#include "sugar-key-grabber.h" -#include "eggaccelerators.h" -#include "sugar-marshal.h" - -/* we exclude shift, GDK_CONTROL_MASK and GDK_MOD1_MASK since we know what - these modifiers mean - these are the mods whose combinations are bound by the keygrabbing code */ -#define IGNORED_MODS (0x2000 /*Xkb modifier*/ | GDK_LOCK_MASK | \ - GDK_MOD2_MASK | GDK_MOD3_MASK | GDK_MOD4_MASK | GDK_MOD5_MASK) -/* these are the ones we actually use for global keys, we always only check - * for these set */ -#define USED_MODS (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK) - -enum { - KEY_PRESSED, - KEY_RELEASED, - N_SIGNALS -}; - -typedef struct { - char *key; - guint keysym; - guint state; - guint keycode; -} Key; - -G_DEFINE_TYPE(SugarKeyGrabber, sugar_key_grabber, G_TYPE_OBJECT) - -static guint signals[N_SIGNALS]; - -static void -free_key_info(Key *key_info) -{ - g_free(key_info->key); - g_free(key_info); -} - -static void -sugar_key_grabber_dispose (GObject *object) -{ - SugarKeyGrabber *grabber = SUGAR_KEY_GRABBER(object); - - if (grabber->keys) { - g_list_foreach(grabber->keys, (GFunc)free_key_info, NULL); - g_list_free(grabber->keys); - grabber->keys = NULL; - } -} - -static void -sugar_key_grabber_class_init(SugarKeyGrabberClass *grabber_class) -{ - GObjectClass *g_object_class = G_OBJECT_CLASS (grabber_class); - - g_object_class->dispose = sugar_key_grabber_dispose; - - signals[KEY_PRESSED] = g_signal_new ("key-pressed", - G_TYPE_FROM_CLASS (grabber_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (SugarKeyGrabberClass, key_pressed), - NULL, NULL, - sugar_marshal_BOOLEAN__UINT_UINT, - G_TYPE_BOOLEAN, 2, - G_TYPE_UINT, - G_TYPE_UINT); - signals[KEY_RELEASED] = g_signal_new ("key-released", - G_TYPE_FROM_CLASS (grabber_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (SugarKeyGrabberClass, key_released), - NULL, NULL, - sugar_marshal_BOOLEAN__UINT_UINT, - G_TYPE_BOOLEAN, 2, - G_TYPE_UINT, - G_TYPE_UINT); -} - -char * -sugar_key_grabber_get_key(SugarKeyGrabber *grabber, guint keycode, guint state) -{ - GList *l; - - for (l = grabber->keys; l != NULL; l = l->next) { - Key *keyinfo = (Key *)l->data; - if ((keyinfo->keycode == keycode) && - ((state & USED_MODS) == keyinfo->state)) { - return g_strdup(keyinfo->key); - } - } - - return NULL; -} - -static GdkFilterReturn -filter_events(GdkXEvent *xevent, GdkEvent *event, gpointer data) -{ - SugarKeyGrabber *grabber = (SugarKeyGrabber *)data; - XEvent *xev = (XEvent *)xevent; - - if (xev->type == KeyRelease) { - int return_value; - g_signal_emit (grabber, signals[KEY_RELEASED], 0, xev->xkey.keycode, - xev->xkey.state, &return_value); - if(return_value) - return GDK_FILTER_REMOVE; - } - - if (xev->type == KeyPress) { - int return_value; - g_signal_emit (grabber, signals[KEY_PRESSED], 0, xev->xkey.keycode, - xev->xkey.state, &return_value); - if(return_value) - return GDK_FILTER_REMOVE; - } - - return GDK_FILTER_CONTINUE; -} - -static void -sugar_key_grabber_init(SugarKeyGrabber *grabber) -{ - GdkScreen *screen; - - screen = gdk_screen_get_default(); - grabber->root = gdk_screen_get_root_window(screen); - grabber->keys = NULL; - - gdk_window_add_filter(grabber->root, filter_events, grabber); -} - -/* grab_key and grab_key_real are from - * gnome-control-center/gnome-settings-daemon/gnome-settings-multimedia-keys.c - */ - -static gboolean -grab_key_real (Key *key, GdkWindow *root, gboolean grab, int result) -{ - gdk_error_trap_push (); - if (grab) - XGrabKey (GDK_DISPLAY(), key->keycode, (result | key->state), - GDK_WINDOW_XID (root), True, GrabModeAsync, GrabModeAsync); - else - XUngrabKey(GDK_DISPLAY(), key->keycode, (result | key->state), - GDK_WINDOW_XID (root)); - gdk_flush (); - - gdk_error_trap_pop (); - - return TRUE; -} - -#define N_BITS 32 -static void -grab_key (SugarKeyGrabber *grabber, Key *key, gboolean grab) -{ - int indexes[N_BITS];/*indexes of bits we need to flip*/ - int i, bit, bits_set_cnt; - int uppervalue; - guint mask_to_traverse = IGNORED_MODS & ~ key->state; - - bit = 0; - for (i = 0; i < N_BITS; i++) { - if (mask_to_traverse & (1<<i)) - indexes[bit++]=i; - } - - bits_set_cnt = bit; - - uppervalue = 1<<bits_set_cnt; - for (i = 0; i < uppervalue; i++) { - int j, result = 0; - - for (j = 0; j < bits_set_cnt; j++) { - if (i & (1<<j)) - result |= (1<<indexes[j]); - } - - if (grab_key_real (key, grabber->root, grab, result) == FALSE) - return; - } -} - -void -sugar_key_grabber_grab(SugarKeyGrabber *grabber, const char *key) -{ - Key *keyinfo; - - keyinfo = g_new0 (Key, 1); - keyinfo->key = g_strdup(key); - egg_accelerator_parse_virtual (key, &keyinfo->keysym, - &keyinfo->keycode, &keyinfo->state); - - grab_key(grabber, keyinfo, TRUE); - - grabber->keys = g_list_append(grabber->keys, keyinfo); -} |