Complete the keybindings stuff and use it for the home page

2 files changed, 131 insertions, 50 deletions

diff --git a/bindings/globalkeys/Makefile.am b/bindings/globalkeys/Makefile.am
index cfedfbe..210550a 100644
--- a/bindings/globalkeys/Makefile.am
+++ b/bindings/globalkeys/Makefile.am
@@ -1,4 +1,5 @@
 INCLUDES =			\
+	$(WARN_CFLAGS)		\
 	$(PYTHON_INCLUDES)	\
 	$(PYGTK_CFLAGS)		\
 	$(GLOBALKEYS_CFLAGS)
diff --git a/bindings/globalkeys/sugar-key-grabber.c b/bindings/globalkeys/sugar-key-grabber.c
index bf563b4..7b00685 100644
--- a/bindings/globalkeys/sugar-key-grabber.c
+++ b/bindings/globalkeys/sugar-key-grabber.c
@@ -19,45 +19,111 @@
 #include <X11/X.h>
 #include <gdk/gdkscreen.h>
 #include <gdk/gdkx.h>
+#include <gdk/gdk.h>
 
 #include "sugar-key-grabber.h"
+#include "eggaccelerators.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)
 
 struct _SugarKeyGrabber {
 	GObject base_instance;
 
 	GdkWindow *root;
+	GList *keys;
 };
 
 struct _SugarKeyGrabberClass {
 	GObjectClass base_class;
+
+	void (* key_pressed) (SugarKeyGrabber *grabber,
+						  const char      *key);
+};
+
+enum {
+	KEY_PRESSED,
+	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 *key_grabber_class)
-{ 
+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,
+                         g_cclosure_marshal_VOID__STRING,
+                         G_TYPE_NONE, 1,
+                         G_TYPE_STRING);
 }
 
 static GdkFilterReturn
 filter_events(GdkXEvent *xevent, GdkEvent *event, gpointer data)
 {
-    SugarKeyGrabber *grabber = (SugarKeyGrabber *)data;
+	SugarKeyGrabber *grabber = (SugarKeyGrabber *)data;
 	XEvent *xev = (XEvent *)xevent;
-	XAnyEvent *xanyev = (XAnyEvent *)xevent;
-	guint keycode, state;
-	int i;
 
-	keycode = xev->xkey.keycode;
-	state = xev->xkey.state;
+	if (xev->type == KeyPress) {
+		GList *l;
+		guint keycode, state;
+
+		keycode = xev->xkey.keycode;
+		state = xev->xkey.state;
+
+		for (l = grabber->keys; l != NULL; l = l->next) {
+			Key *keyinfo = (Key *)l->data;
+			if (keyinfo->keycode == keycode &&
+			    (state & USED_MODS) == keyinfo->state) {
+				g_signal_emit (grabber, signals[KEY_PRESSED],
+							   0, keyinfo->key);
+				return GDK_FILTER_REMOVE;
+			}
+		}
+	}
 
-	g_print("KeyCode %d", keycode);
+	return GDK_FILTER_CONTINUE;
 }
 
 static void
@@ -67,60 +133,74 @@ sugar_key_grabber_init(SugarKeyGrabber *grabber)
 
 	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
+ */
 
-/* inspired from all_combinations from gnome-panel/gnome-panel/global-keys.c */
-#define N_BITS 32
-static int
-get_modifier(guint state)
+static gboolean
+grab_key_real (Key *key, GdkWindow *root, gboolean grab, int result)
 {
-	int indexes[N_BITS];/*indexes of bits we need to flip*/
-	int i, bit, bits_set_cnt;
-	int uppervalue;
-	int result = 0;
-	guint mask_to_traverse = IGNORED_MODS & ~ 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;
-
-		for (j = 0; j < bits_set_cnt; j++) {
-			if (i & (1<<j))
-				result |= (1<<indexes[j]);
-		}
-
-	}
+        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;
+}
 
-	return (result | state);
+#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)
 {
-	guint keysym;
-	guint state;
-	guint keycode;
-
-	gdk_error_trap_push ();
+	Key *keyinfo;
 
-	egg_accelerator_parse_virtual (key, &keysym, &keycode, &state);
+	keyinfo = g_new0 (Key, 1);
+	keyinfo->key = g_strdup(key);
+	egg_accelerator_parse_virtual (key, &keyinfo->keysym,
+								   &keyinfo->keycode, &keyinfo->state);
 
-	XGrabKey (GDK_DISPLAY(), keycode, get_modifier(state),
-			  GDK_WINDOW_XID (grabber->root), True,
-			  GrabModeAsync, GrabModeAsync);
-	
-	gdk_flush ();
+	grab_key(grabber, keyinfo, TRUE);
 
-	gdk_error_trap_pop ();
+	grabber->keys = g_list_append(grabber->keys, keyinfo);	
 }