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Complete the keybindings stuff and use it for the home page

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This commit is contained in:
Marco Pesenti Gritti
2006-08-25 14:03:48 +02:00
parent 4425e14f13
commit 6e920265ad
7 changed files with 146 additions and 85 deletions
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bindings/globalkeys/Makefile.am
+1
View File
@@ -1,4 +1,5 @@
INCLUDES = \
$(WARN_CFLAGS) \
$(PYTHON_INCLUDES) \
$(PYGTK_CFLAGS) \
$(GLOBALKEYS_CFLAGS)
bindings/globalkeys/sugar-key-grabber.c
+125 -45
View File
@@ -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
sugar_key_grabber_class_init(SugarKeyGrabberClass *key_grabber_class)
{
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,
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;
g_print("KeyCode %d", keycode);
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;
}
}
}
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;
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 ();
bit = 0;
for (i = 0; i < N_BITS; i++) {
if (mask_to_traverse & (1<<i))
indexes[bit++]=i;
}
gdk_error_trap_pop ();
bits_set_cnt = bit;
return TRUE;
}
uppervalue = 1<<bits_set_cnt;
for (i = 0; i < uppervalue; i++) {
int j;
#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;
for (j = 0; j < bits_set_cnt; j++) {
if (i & (1<<j))
result |= (1<<indexes[j]);
}
bit = 0;
for (i = 0; i < N_BITS; i++) {
if (mask_to_traverse & (1<<i))
indexes[bit++]=i;
}
}
bits_set_cnt = bit;
return (result | state);
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;
Key *keyinfo;
gdk_error_trap_push ();
keyinfo = g_new0 (Key, 1);
keyinfo->key = g_strdup(key);
egg_accelerator_parse_virtual (key, &keyinfo->keysym,
&keyinfo->keycode, &keyinfo->state);
egg_accelerator_parse_virtual (key, &keysym, &keycode, &state);
grab_key(grabber, keyinfo, TRUE);
XGrabKey (GDK_DISPLAY(), keycode, get_modifier(state),
GDK_WINDOW_XID (grabber->root), True,
GrabModeAsync, GrabModeAsync);
gdk_flush ();
gdk_error_trap_pop ();
grabber->keys = g_list_append(grabber->keys, keyinfo);
}