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#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gconf/gconf.h>
#include <math.h>
#include <gdk/gdkkeysyms.h>
#include <X11/keysym.h>
#include <string.h>
#include "gnome-settings-locate-pointer.h"
#include "gnome-settings-daemon.h"
#define DEFAULT_PTR_MAP_SIZE 128
static void
set_left_handed (gboolean left_handed)
{
unsigned char *buttons;
gint n_buttons, i;
gint idx_1 = 0, idx_3 = 1;
buttons = g_alloca (DEFAULT_PTR_MAP_SIZE);
n_buttons = XGetPointerMapping (GDK_DISPLAY (), buttons, DEFAULT_PTR_MAP_SIZE);
if (n_buttons > DEFAULT_PTR_MAP_SIZE) {
buttons = g_alloca (n_buttons);
n_buttons = XGetPointerMapping (GDK_DISPLAY (), buttons, n_buttons);
}
for (i = 0; i < n_buttons; i++)
{
if (buttons[i] == 1)
idx_1 = i;
else if (buttons[i] == ((n_buttons < 3) ? 2 : 3))
idx_3 = i;
}
if ((left_handed && idx_1 < idx_3) ||
(!left_handed && idx_1 > idx_3))
{
buttons[idx_1] = ((n_buttons < 3) ? 2 : 3);
buttons[idx_3] = 1;
}
XSetPointerMapping (GDK_DISPLAY (), buttons, n_buttons);
}
static void
set_motion_acceleration (gfloat motion_acceleration)
{
gint numerator, denominator;
if (motion_acceleration >= 1.0)
{
/* we want to get the acceleration, with a resolution of 0.5
*/
if ((motion_acceleration - floor (motion_acceleration)) < 0.25)
{
numerator = floor (motion_acceleration);
denominator = 1;
}
else if ((motion_acceleration - floor (motion_acceleration)) < 0.5)
{
numerator = ceil (2.0 * motion_acceleration);
denominator = 2;
}
else if ((motion_acceleration - floor (motion_acceleration)) < 0.75)
{
numerator = floor (2.0 *motion_acceleration);
denominator = 2;
}
else
{
numerator = ceil (motion_acceleration);
denominator = 1;
}
}
else if (motion_acceleration < 1.0 && motion_acceleration > 0)
{
/* This we do to 1/10ths */
numerator = floor (motion_acceleration * 10) + 1;
denominator= 10;
}
else
{
numerator = -1;
denominator = -1;
}
XChangePointerControl (GDK_DISPLAY (), True, False,
numerator, denominator,
0);
}
static void
set_motion_threshold (gint motion_threshold)
{
XChangePointerControl (GDK_DISPLAY (), False, True,
0, 0, motion_threshold);
}
#define KEYBOARD_GROUP_SHIFT 13
#define KEYBOARD_GROUP_MASK ((1 << 13) | (1 << 14))
/* Owen magic */
static GdkFilterReturn
filter (GdkXEvent *xevent,
GdkEvent *event,
gpointer data)
{
XEvent *xev = (XEvent *) xevent;
guint keyval;
gint group;
if (xev->type == KeyPress ||
xev->type == KeyRelease)
{
/* get the keysym */
group = (xev->xkey.state & KEYBOARD_GROUP_MASK) >> KEYBOARD_GROUP_SHIFT;
gdk_keymap_translate_keyboard_state (gdk_keymap_get_default (),
xev->xkey.keycode,
xev->xkey.state,
group,
&keyval,
NULL, NULL, NULL);
if (keyval == GDK_Control_L)
{
if (xev->type == KeyPress)
{
XAllowEvents (gdk_x11_get_default_xdisplay (),
SyncKeyboard,
xev->xkey.time);
}
else
{
XAllowEvents (gdk_x11_get_default_xdisplay (),
AsyncKeyboard,
xev->xkey.time);
gnome_settings_locate_pointer ();
}
}
else
{
XAllowEvents (gdk_x11_get_default_xdisplay (),
ReplayKeyboard,
xev->xkey.time);
XUngrabKeyboard (gdk_x11_get_default_xdisplay (),
xev->xkey.time);
}
return GDK_FILTER_REMOVE;
}
return GDK_FILTER_CONTINUE;
}
static void
set_locate_pointer (gboolean locate_pointer)
{
GdkKeymapKey *keys;
int n_keys;
gboolean has_entries;
has_entries = gdk_keymap_get_entries_for_keyval (gdk_keymap_get_default (),
GDK_Control_L,
&keys,
&n_keys);
if (has_entries)
{
gint i;
for (i = 0; i < n_keys; i++)
{
if (locate_pointer)
XGrabKey (gdk_x11_get_default_xdisplay (),
keys[i].keycode,
AnyModifier,
GDK_ROOT_WINDOW (),
False,
GrabModeAsync,
GrabModeSync);
else
XUngrabKey (gdk_x11_get_default_xdisplay (),
keys[i].keycode,
AnyModifier,
GDK_ROOT_WINDOW ());
}
g_free (keys);
if (locate_pointer)
gdk_window_add_filter (gdk_get_default_root_window (), filter, NULL);
else
gdk_window_remove_filter (gdk_get_default_root_window (), filter, NULL);
}
}
static void
mouse_callback (GConfEntry *entry)
{
if (! strcmp (entry->key, "/desktop/gnome/peripherals/mouse/left_handed"))
{
if (entry->value->type == GCONF_VALUE_BOOL)
set_left_handed (gconf_value_get_bool (entry->value));
}
else if (! strcmp (entry->key, "/desktop/gnome/peripherals/mouse/motion_acceleration"))
{
if (entry->value->type == GCONF_VALUE_FLOAT)
set_motion_acceleration (gconf_value_get_float (entry->value));
}
else if (! strcmp (entry->key, "/desktop/gnome/peripherals/mouse/motion_threshold"))
{
if (entry->value->type == GCONF_VALUE_INT)
set_motion_threshold (gconf_value_get_int (entry->value));
}
else if (! strcmp (entry->key, "/desktop/gnome/peripherals/mouse/locate_pointer"))
{
if (entry->value->type == GCONF_VALUE_BOOL)
set_locate_pointer (gconf_value_get_bool (entry->value));
}
}
void
gnome_settings_mouse_init (GConfClient *client)
{
gnome_settings_daemon_register_callback ("/desktop/gnome/peripherals/mouse", mouse_callback);
}
void
gnome_settings_mouse_load (GConfClient *client)
{
set_left_handed (gconf_client_get_bool (client, "/desktop/gnome/peripherals/mouse/left_handed", NULL));
set_motion_acceleration (gconf_client_get_float (client, "/desktop/gnome/peripherals/mouse/motion_acceleration", NULL));
set_motion_threshold (gconf_client_get_int (client, "/desktop/gnome/peripherals/mouse/motion_threshold", NULL));
set_locate_pointer (gconf_client_get_bool (client, "/desktop/gnome/peripherals/mouse/locate_pointer", NULL));
}
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