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gtk/gdk/x11/gdkdevicemanager-xi2.c
Carlos Garnacho 9f41101ccc Emit GdkDevice::changed when the slave device being used changes 
When the slave device changes, the master takes the shape of the
new one, modifying its axes, this signal is more useful to catch
this situation than the n-axes property
2010-12-15 03:17:58 +01:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gdkdevicemanager-xi2.h"
#include <gdk/gdkdeviceprivate.h>
#include "gdkeventtranslator.h"
#include "gdkdevice-xi2.h"
#include "gdkkeysyms.h"
#include "gdkprivate-x11.h"
#include "gdkx.h"
#include <string.h>
#define HAS_FOCUS(toplevel) ((toplevel)->has_focus || (toplevel)->has_pointer_focus)
static void gdk_device_manager_xi2_constructed (GObject *object);
static void gdk_device_manager_xi2_dispose (GObject *object);
static GList * gdk_device_manager_xi2_list_devices (GdkDeviceManager *device_manager,
GdkDeviceType type);
static GdkDevice * gdk_device_manager_xi2_get_client_pointer (GdkDeviceManager *device_manager);
static void gdk_device_manager_xi2_event_translator_init (GdkEventTranslatorIface *iface);
static gboolean gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GdkDisplay *display,
GdkEvent *event,
XEvent *xevent);
static GdkEventMask gdk_device_manager_xi2_get_handled_events (GdkEventTranslator *translator);
static void gdk_device_manager_xi2_select_window_events (GdkEventTranslator *translator,
Window window,
GdkEventMask event_mask);
G_DEFINE_TYPE_WITH_CODE (GdkDeviceManagerXI2, gdk_device_manager_xi2, GDK_TYPE_DEVICE_MANAGER,
G_IMPLEMENT_INTERFACE (GDK_TYPE_EVENT_TRANSLATOR,
gdk_device_manager_xi2_event_translator_init))
static void
gdk_device_manager_xi2_class_init (GdkDeviceManagerXI2Class *klass)
{
GdkDeviceManagerClass *device_manager_class = GDK_DEVICE_MANAGER_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gdk_device_manager_xi2_constructed;
object_class->dispose = gdk_device_manager_xi2_dispose;
device_manager_class->list_devices = gdk_device_manager_xi2_list_devices;
device_manager_class->get_client_pointer = gdk_device_manager_xi2_get_client_pointer;
}
static void
gdk_device_manager_xi2_init (GdkDeviceManagerXI2 *device_manager)
{
device_manager->id_table = g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) g_object_unref);
}
static void
_gdk_device_manager_xi2_select_events (GdkDeviceManager *device_manager,
Window xwindow,
XIEventMask *event_mask)
{
GdkDisplay *display;
Display *xdisplay;
display = gdk_device_manager_get_display (device_manager);
xdisplay = GDK_DISPLAY_XDISPLAY (display);
XISelectEvents (xdisplay, xwindow, event_mask, 1);
}
static void
translate_valuator_class (GdkDisplay *display,
GdkDevice *device,
XIValuatorClassInfo *info,
gint n_valuator)
{
static gboolean initialized = FALSE;
static Atom label_atoms [GDK_AXIS_LAST] = { 0 };
GdkAxisUse use = GDK_AXIS_IGNORE;
GdkAtom label;
gint i;
if (!initialized)
{
label_atoms [GDK_AXIS_X] = gdk_x11_get_xatom_by_name_for_display (display, "Abs X");
label_atoms [GDK_AXIS_Y] = gdk_x11_get_xatom_by_name_for_display (display, "Abs Y");
label_atoms [GDK_AXIS_PRESSURE] = gdk_x11_get_xatom_by_name_for_display (display, "Abs Pressure");
label_atoms [GDK_AXIS_XTILT] = gdk_x11_get_xatom_by_name_for_display (display, "Abs Tilt X");
label_atoms [GDK_AXIS_YTILT] = gdk_x11_get_xatom_by_name_for_display (display, "Abs Tilt Y");
label_atoms [GDK_AXIS_WHEEL] = gdk_x11_get_xatom_by_name_for_display (display, "Abs Wheel");
initialized = TRUE;
}
for (i = GDK_AXIS_IGNORE; i <= GDK_AXIS_LAST; i++)
{
if (label_atoms[i] == info->label)
{
use = i;
break;
}
}
if (info->label != None)
label = gdk_x11_xatom_to_atom_for_display (display, info->label);
else
label = GDK_NONE;
_gdk_device_add_axis (device,
label,
use,
info->min,
info->max,
info->resolution);
}
static void
translate_device_classes (GdkDisplay *display,
GdkDevice *device,
XIAnyClassInfo **classes,
guint n_classes)
{
gint i, n_valuator = 0;
g_object_freeze_notify (G_OBJECT (device));
for (i = 0; i < n_classes; i++)
{
XIAnyClassInfo *class_info = classes[i];
switch (class_info->type)
{
case XIKeyClass:
{
XIKeyClassInfo *key_info = (XIKeyClassInfo *) class_info;
gint i;
_gdk_device_set_keys (device, key_info->num_keycodes);
for (i = 0; i < key_info->num_keycodes; i++)
gdk_device_set_key (device, i, key_info->keycodes[i], 0);
}
break;
case XIValuatorClass:
translate_valuator_class (display, device,
(XIValuatorClassInfo *) class_info,
n_valuator);
n_valuator++;
break;
default:
/* Ignore */
break;
}
}
g_object_thaw_notify (G_OBJECT (device));
}
static GdkDevice *
create_device (GdkDeviceManager *device_manager,
GdkDisplay *display,
XIDeviceInfo *dev)
{
GdkInputSource input_source;
GdkDeviceType type;
GdkDevice *device;
GdkInputMode mode;
if (dev->use == XIMasterKeyboard || dev->use == XISlaveKeyboard)
input_source = GDK_SOURCE_KEYBOARD;
else
{
gchar *tmp_name;
tmp_name = g_ascii_strdown (dev->name, -1);
if (strstr (tmp_name, "eraser"))
input_source = GDK_SOURCE_ERASER;
else if (strstr (tmp_name, "cursor"))
input_source = GDK_SOURCE_CURSOR;
else if (strstr (tmp_name, "wacom") ||
strstr (tmp_name, "pen"))
input_source = GDK_SOURCE_PEN;
else
input_source = GDK_SOURCE_MOUSE;
g_free (tmp_name);
}
switch (dev->use)
{
case XIMasterKeyboard:
case XIMasterPointer:
type = GDK_DEVICE_TYPE_MASTER;
mode = GDK_MODE_SCREEN;
break;
case XISlaveKeyboard:
case XISlavePointer:
type = GDK_DEVICE_TYPE_SLAVE;
mode = GDK_MODE_DISABLED;
break;
case XIFloatingSlave:
default:
type = GDK_DEVICE_TYPE_FLOATING;
mode = GDK_MODE_DISABLED;
break;
}
device = g_object_new (GDK_TYPE_DEVICE_XI2,
"name", dev->name,
"type", type,
"input-source", input_source,
"input-mode", mode,
"has-cursor", (dev->use == XIMasterPointer),
"display", display,
"device-manager", device_manager,
"device-id", dev->deviceid,
NULL);
translate_device_classes (display, device, dev->classes, dev->num_classes);
return device;
}
static GdkDevice *
add_device (GdkDeviceManagerXI2 *device_manager,
XIDeviceInfo *dev,
gboolean emit_signal)
{
GdkDisplay *display;
GdkDevice *device;
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (device_manager));
device = create_device (GDK_DEVICE_MANAGER (device_manager), display, dev);
g_hash_table_replace (device_manager->id_table,
GINT_TO_POINTER (dev->deviceid),
g_object_ref (device));
if (dev->use == XIMasterPointer || dev->use == XIMasterKeyboard)
device_manager->master_devices = g_list_append (device_manager->master_devices, device);
else if (dev->use == XISlavePointer || dev->use == XISlaveKeyboard)
device_manager->slave_devices = g_list_append (device_manager->slave_devices, device);
else if (dev->use == XIFloatingSlave)
device_manager->floating_devices = g_list_append (device_manager->floating_devices, device);
else
g_warning ("Unhandled device: %s\n", gdk_device_get_name (device));
if (emit_signal)
g_signal_emit_by_name (device_manager, "device-added", device);
return device;
}
static void
remove_device (GdkDeviceManagerXI2 *device_manager,
int device_id)
{
GdkDevice *device;
device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (device_id));
if (device)
{
device_manager->master_devices = g_list_remove (device_manager->master_devices, device);
device_manager->slave_devices = g_list_remove (device_manager->slave_devices, device);
device_manager->floating_devices = g_list_remove (device_manager->floating_devices, device);
g_signal_emit_by_name (device_manager, "device-removed", device);
g_object_run_dispose (G_OBJECT (device));
g_hash_table_remove (device_manager->id_table,
GINT_TO_POINTER (device_id));
}
}
static void
relate_devices (gpointer key,
gpointer value,
gpointer user_data)
{
GdkDeviceManagerXI2 *device_manager;
GdkDevice *device, *relative;
device_manager = user_data;
device = g_hash_table_lookup (device_manager->id_table, key);
relative = g_hash_table_lookup (device_manager->id_table, value);
_gdk_device_set_associated_device (device, relative);
_gdk_device_set_associated_device (relative, device);
}
static void
gdk_device_manager_xi2_constructed (GObject *object)
{
GdkDeviceManagerXI2 *device_manager_xi2;
GdkDisplay *display;
GdkScreen *screen;
GHashTable *relations;
Display *xdisplay;
XIDeviceInfo *info, *dev;
int ndevices, i;
XIEventMask event_mask;
unsigned char mask[2] = { 0 };
device_manager_xi2 = GDK_DEVICE_MANAGER_XI2 (object);
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (object));
xdisplay = GDK_DISPLAY_XDISPLAY (display);
relations = g_hash_table_new (NULL, NULL);
info = XIQueryDevice(xdisplay, XIAllDevices, &ndevices);
/* Initialize devices list */
for (i = 0; i < ndevices; i++)
{
GdkDevice *device;
dev = &info[i];
device = add_device (device_manager_xi2, dev, FALSE);
if (dev->use == XIMasterPointer ||
dev->use == XIMasterKeyboard)
{
g_hash_table_insert (relations,
GINT_TO_POINTER (dev->deviceid),
GINT_TO_POINTER (dev->attachment));
}
}
XIFreeDeviceInfo(info);
/* Stablish relationships between devices */
g_hash_table_foreach (relations, relate_devices, object);
g_hash_table_destroy (relations);
/* Connect to hierarchy change events */
screen = gdk_display_get_default_screen (display);
XISetMask (mask, XI_HierarchyChanged);
XISetMask (mask, XI_DeviceChanged);
event_mask.deviceid = XIAllDevices;
event_mask.mask_len = sizeof (mask);
event_mask.mask = mask;
_gdk_device_manager_xi2_select_events (GDK_DEVICE_MANAGER (object),
GDK_WINDOW_XID (gdk_screen_get_root_window (screen)),
&event_mask);
}
static void
gdk_device_manager_xi2_dispose (GObject *object)
{
GdkDeviceManagerXI2 *device_manager_xi2;
device_manager_xi2 = GDK_DEVICE_MANAGER_XI2 (object);
g_list_foreach (device_manager_xi2->master_devices, (GFunc) g_object_unref, NULL);
g_list_free (device_manager_xi2->master_devices);
device_manager_xi2->master_devices = NULL;
g_list_foreach (device_manager_xi2->slave_devices, (GFunc) g_object_unref, NULL);
g_list_free (device_manager_xi2->slave_devices);
device_manager_xi2->slave_devices = NULL;
g_list_foreach (device_manager_xi2->floating_devices, (GFunc) g_object_unref, NULL);
g_list_free (device_manager_xi2->floating_devices);
device_manager_xi2->floating_devices = NULL;
if (device_manager_xi2->id_table)
{
g_hash_table_destroy (device_manager_xi2->id_table);
device_manager_xi2->id_table = NULL;
}
G_OBJECT_CLASS (gdk_device_manager_xi2_parent_class)->dispose (object);
}
static GList *
gdk_device_manager_xi2_list_devices (GdkDeviceManager *device_manager,
GdkDeviceType type)
{
GdkDeviceManagerXI2 *device_manager_xi2;
GList *list = NULL;
device_manager_xi2 = GDK_DEVICE_MANAGER_XI2 (device_manager);
switch (type)
{
case GDK_DEVICE_TYPE_MASTER:
list = device_manager_xi2->master_devices;
break;
case GDK_DEVICE_TYPE_SLAVE:
list = device_manager_xi2->slave_devices;
break;
case GDK_DEVICE_TYPE_FLOATING:
list = device_manager_xi2->floating_devices;
break;
default:
g_assert_not_reached ();
}
return g_list_copy (list);
}
static GdkDevice *
gdk_device_manager_xi2_get_client_pointer (GdkDeviceManager *device_manager)
{
GdkDeviceManagerXI2 *device_manager_xi2;
GdkDisplay *display;
int device_id;
device_manager_xi2 = (GdkDeviceManagerXI2 *) device_manager;
display = gdk_device_manager_get_display (device_manager);
XIGetClientPointer (GDK_DISPLAY_XDISPLAY (display),
None, &device_id);
return g_hash_table_lookup (device_manager_xi2->id_table,
GINT_TO_POINTER (device_id));
}
static void
gdk_device_manager_xi2_event_translator_init (GdkEventTranslatorIface *iface)
{
iface->translate_event = gdk_device_manager_xi2_translate_event;
iface->get_handled_events = gdk_device_manager_xi2_get_handled_events;
iface->select_window_events = gdk_device_manager_xi2_select_window_events;
}
static void
handle_hierarchy_changed (GdkDeviceManagerXI2 *device_manager,
XIHierarchyEvent *ev)
{
GdkDevice *device;
gint i;
/* We only care about enabled devices */
if (!(ev->flags & XIDeviceEnabled) &&
!(ev->flags & XIDeviceDisabled))
return;
for (i = 0; i < ev->num_info; i++)
{
if (ev->info[i].flags & XIDeviceEnabled)
{
GdkDisplay *display;
Display *xdisplay;
XIDeviceInfo *info;
int ndevices;
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (device_manager));
xdisplay = GDK_DISPLAY_XDISPLAY (display);
info = XIQueryDevice(xdisplay, ev->info[i].deviceid, &ndevices);
device = add_device (device_manager, &info[0], TRUE);
XIFreeDeviceInfo(info);
}
else if (ev->info[i].flags & XIDeviceDisabled)
remove_device (device_manager, ev->info[i].deviceid);
}
}
static void
handle_device_changed (GdkDeviceManagerXI2 *device_manager,
XIDeviceChangedEvent *ev)
{
GdkDisplay *display;
GdkDevice *device;
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (device_manager));
device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (ev->deviceid));
_gdk_device_reset_axes (device);
translate_device_classes (display, device, ev->classes, ev->num_classes);
g_signal_emit_by_name (G_OBJECT (device), "changed");
}
static GdkCrossingMode
translate_crossing_mode (int mode)
{
switch (mode)
{
case NotifyNormal:
return GDK_CROSSING_NORMAL;
case NotifyGrab:
return GDK_CROSSING_GRAB;
case NotifyUngrab:
return GDK_CROSSING_UNGRAB;
default:
g_assert_not_reached ();
}
}
static GdkNotifyType
translate_notify_type (int detail)
{
switch (detail)
{
case NotifyInferior:
return GDK_NOTIFY_INFERIOR;
case NotifyAncestor:
return GDK_NOTIFY_ANCESTOR;
case NotifyVirtual:
return GDK_NOTIFY_VIRTUAL;
case NotifyNonlinear:
return GDK_NOTIFY_NONLINEAR;
case NotifyNonlinearVirtual:
return GDK_NOTIFY_NONLINEAR_VIRTUAL;
default:
g_assert_not_reached ();
}
}
static gboolean
set_screen_from_root (GdkDisplay *display,
GdkEvent *event,
Window xrootwin)
{
GdkScreen *screen;
screen = _gdk_x11_display_screen_for_xrootwin (display, xrootwin);
if (screen)
{
gdk_event_set_screen (event, screen);
return TRUE;
}
return FALSE;
}
static void
set_user_time (GdkEvent *event)
{
GdkWindow *window;
guint32 time;
window = gdk_window_get_toplevel (event->any.window);
g_return_if_fail (GDK_IS_WINDOW (window));
time = gdk_event_get_time (event);
/* If an event doesn't have a valid timestamp, we shouldn't use it
* to update the latest user interaction time.
*/
if (time != GDK_CURRENT_TIME)
gdk_x11_window_set_user_time (window, time);
}
static void
translate_keyboard_string (GdkEventKey *event)
{
gunichar c = 0;
gchar buf[7];
/* Fill in event->string crudely, since various programs
* depend on it.
*/
event->string = NULL;
if (event->keyval != GDK_KEY_VoidSymbol)
c = gdk_keyval_to_unicode (event->keyval);
if (c)
{
gsize bytes_written;
gint len;
/* Apply the control key - Taken from Xlib
*/
if (event->state & GDK_CONTROL_MASK)
{
if ((c >= '@' && c < '\177') || c == ' ') c &= 0x1F;
else if (c == '2')
{
event->string = g_memdup ("\0\0", 2);
event->length = 1;
buf[0] = '\0';
return;
}
else if (c >= '3' && c <= '7') c -= ('3' - '\033');
else if (c == '8') c = '\177';
else if (c == '/') c = '_' & 0x1F;
}
len = g_unichar_to_utf8 (c, buf);
buf[len] = '\0';
event->string = g_locale_from_utf8 (buf, len,
NULL, &bytes_written,
NULL);
if (event->string)
event->length = bytes_written;
}
else if (event->keyval == GDK_KEY_Escape)
{
event->length = 1;
event->string = g_strdup ("\033");
}
else if (event->keyval == GDK_KEY_Return ||
event->keyval == GDK_KEY_KP_Enter)
{
event->length = 1;
event->string = g_strdup ("\r");
}
if (!event->string)
{
event->length = 0;
event->string = g_strdup ("");
}
}
static void
generate_focus_event (GdkWindow *window,
GdkDevice *device,
GdkDevice *source_device,
gboolean in)
{
GdkEvent *event;
event = gdk_event_new (GDK_FOCUS_CHANGE);
event->focus_change.window = g_object_ref (window);
event->focus_change.send_event = FALSE;
event->focus_change.in = in;
gdk_event_set_device (event, device);
gdk_event_set_source_device (event, source_device);
gdk_event_put (event);
gdk_event_free (event);
}
static void
handle_focus_change (GdkWindow *window,
GdkDevice *device,
GdkDevice *source_device,
gint detail,
gint mode,
gboolean in)
{
GdkToplevelX11 *toplevel;
gboolean had_focus;
toplevel = _gdk_x11_window_get_toplevel (window);
if (!toplevel)
return;
had_focus = HAS_FOCUS (toplevel);
switch (detail)
{
case NotifyAncestor:
case NotifyVirtual:
/* When the focus moves from an ancestor of the window to
* the window or a descendent of the window, *and* the
* pointer is inside the window, then we were previously
* receiving keystroke events in the has_pointer_focus
* case and are now receiving them in the
* has_focus_window case.
*/
if (toplevel->has_pointer &&
mode != NotifyGrab &&
mode != NotifyUngrab)
toplevel->has_pointer_focus = (in) ? FALSE : TRUE;
/* fall through */
case NotifyNonlinear:
case NotifyNonlinearVirtual:
if (mode != NotifyGrab &&
mode != NotifyUngrab)
toplevel->has_focus_window = (in) ? TRUE : FALSE;
/* We pretend that the focus moves to the grab
* window, so we pay attention to NotifyGrab
* NotifyUngrab, and ignore NotifyWhileGrabbed
*/
if (mode != NotifyWhileGrabbed)
toplevel->has_focus = (in) ? TRUE : FALSE;
break;
case NotifyPointer:
/* The X server sends NotifyPointer/NotifyGrab,
* but the pointer focus is ignored while a
* grab is in effect
*/
if (mode != NotifyGrab &&
mode != NotifyUngrab)
toplevel->has_pointer_focus = (in) ? TRUE :FALSE;
break;
case NotifyInferior:
case NotifyPointerRoot:
case NotifyDetailNone:
break;
}
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, device, source_device, (in) ? TRUE : FALSE);
}
static gdouble *
translate_axes (GdkDevice *device,
gdouble x,
gdouble y,
GdkWindow *window,
XIValuatorState *valuators)
{
guint n_axes, i;
gint width, height;
gdouble *axes;
double *vals;
g_object_get (device, "n-axes", &n_axes, NULL);
axes = g_new0 (gdouble, n_axes);
vals = valuators->values;
width = gdk_window_get_width (window);
height = gdk_window_get_height (window);
for (i = 0; i < valuators->mask_len * 8; i++)
{
GdkAxisUse use;
gdouble val;
if (!XIMaskIsSet (valuators->mask, i))
continue;
use = _gdk_device_get_axis_use (device, i);
val = *vals++;
switch (use)
{
case GDK_AXIS_X:
case GDK_AXIS_Y:
if (gdk_device_get_mode (device) == GDK_MODE_WINDOW)
_gdk_device_translate_window_coord (device, window, i, val, &axes[i]);
else
{
if (use == GDK_AXIS_X)
axes[i] = x;
else
axes[i] = y;
}
break;
default:
_gdk_device_translate_axis (device, i, val, &axes[i]);
break;
}
}
return axes;
}
static gboolean
is_parent_of (GdkWindow *parent,
GdkWindow *child)
{
GdkWindow *w;
w = child;
while (w != NULL)
{
if (w == parent)
return TRUE;
w = gdk_window_get_parent (w);
}
return FALSE;
}
static GdkWindow *
get_event_window (GdkEventTranslator *translator,
XIEvent *ev)
{
GdkDisplay *display;
GdkWindow *window = NULL;
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (translator));
switch (ev->evtype)
{
case XI_KeyPress:
case XI_KeyRelease:
case XI_ButtonPress:
case XI_ButtonRelease:
case XI_Motion:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
window = gdk_window_lookup_for_display (display, xev->event);
/* Apply keyboard grabs to non-native windows */
if (ev->evtype == XI_KeyPress || ev->evtype == XI_KeyRelease)
{
GdkDeviceGrabInfo *info;
GdkDevice *device;
gulong serial;
device = g_hash_table_lookup (GDK_DEVICE_MANAGER_XI2 (translator)->id_table,
GUINT_TO_POINTER (((XIDeviceEvent *) ev)->deviceid));
serial = _gdk_windowing_window_get_next_serial (display);
info = _gdk_display_has_device_grab (display, device, serial);
if (info &&
(!is_parent_of (info->window, window) ||
!info->owner_events))
{
/* Report key event against grab window */
window = info->window;
}
}
}
break;
case XI_Enter:
case XI_Leave:
case XI_FocusIn:
case XI_FocusOut:
{
XIEnterEvent *xev = (XIEnterEvent *) ev;
window = gdk_window_lookup_for_display (display, xev->event);
}
break;
}
return window;
}
static gboolean
gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GdkDisplay *display,
GdkEvent *event,
XEvent *xevent)
{
GdkDeviceManagerXI2 *device_manager;
XGenericEventCookie *cookie;
gboolean return_val = TRUE;
GdkWindow *window;
XIEvent *ev;
Display *dpy;
dpy = GDK_DISPLAY_XDISPLAY (display);
device_manager = (GdkDeviceManagerXI2 *) translator;
cookie = &xevent->xcookie;
if (!XGetEventData (dpy, cookie))
return FALSE;
if (cookie->type != GenericEvent ||
cookie->extension != device_manager->opcode)
{
XFreeEventData (dpy, cookie);
return FALSE;
}
ev = (XIEvent *) cookie->data;
window = get_event_window (translator, ev);
if (window && GDK_WINDOW_DESTROYED (window))
{
XFreeEventData (dpy, cookie);
return FALSE;
}
if (ev->evtype == XI_Motion ||
ev->evtype == XI_ButtonRelease)
{
if (_gdk_moveresize_handle_event (xevent))
{
XFreeEventData (dpy, cookie);
return FALSE;
}
}
switch (ev->evtype)
{
case XI_HierarchyChanged:
handle_hierarchy_changed (device_manager,
(XIHierarchyEvent *) ev);
return_val = FALSE;
break;
case XI_DeviceChanged:
handle_device_changed (device_manager,
(XIDeviceChangedEvent *) ev);
return_val = FALSE;
break;
case XI_KeyPress:
case XI_KeyRelease:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkKeymap *keymap = gdk_keymap_get_for_display (display);
GdkModifierType consumed, state;
GdkDevice *device, *source_device;
event->key.type = xev->evtype == XI_KeyPress ? GDK_KEY_PRESS : GDK_KEY_RELEASE;
event->key.window = window;
event->key.time = xev->time;
event->key.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
event->key.group = _gdk_x11_get_group_for_state (display, event->key.state);
event->key.hardware_keycode = xev->detail;
event->key.is_modifier = _gdk_keymap_key_is_modifier (keymap, event->key.hardware_keycode);
device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->deviceid));
gdk_event_set_device (event, device);
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->key.keyval = GDK_KEY_VoidSymbol;
gdk_keymap_translate_keyboard_state (keymap,
event->key.hardware_keycode,
event->key.state,
event->key.group,
&event->key.keyval,
NULL, NULL, &consumed);
state = event->key.state & ~consumed;
_gdk_keymap_add_virtual_modifiers_compat (keymap, &state);
event->key.state |= state;
translate_keyboard_string ((GdkEventKey *) event);
if (ev->evtype == XI_KeyPress)
set_user_time (event);
/* FIXME: emulate autorepeat on key
* release? XI2 seems attached to Xkb.
*/
}
break;
case XI_ButtonPress:
case XI_ButtonRelease:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkDevice *source_device;
switch (xev->detail)
{
case 4:
case 5:
case 6:
case 7:
event->scroll.type = GDK_SCROLL;
if (xev->detail == 4)
event->scroll.direction = GDK_SCROLL_UP;
else if (xev->detail == 5)
event->scroll.direction = GDK_SCROLL_DOWN;
else if (xev->detail == 6)
event->scroll.direction = GDK_SCROLL_LEFT;
else
event->scroll.direction = GDK_SCROLL_RIGHT;
event->scroll.window = window;
event->scroll.time = xev->time;
event->scroll.x = (gdouble) xev->event_x;
event->scroll.y = (gdouble) xev->event_y;
event->scroll.x_root = (gdouble) xev->root_x;
event->scroll.y_root = (gdouble) xev->root_y;
event->scroll.device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->scroll.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
break;
default:
event->button.type = (ev->evtype == XI_ButtonPress) ? GDK_BUTTON_PRESS : GDK_BUTTON_RELEASE;
event->button.window = window;
event->button.time = xev->time;
event->button.x = (gdouble) xev->event_x;
event->button.y = (gdouble) xev->event_y;
event->button.x_root = (gdouble) xev->root_x;
event->button.y_root = (gdouble) xev->root_y;
event->button.device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->button.axes = translate_axes (event->button.device,
event->button.x,
event->button.y,
event->button.window,
&xev->valuators);
if (gdk_device_get_mode (event->button.device) == GDK_MODE_WINDOW)
{
GdkDevice *device = event->button.device;
/* Update event coordinates from axes */
gdk_device_get_axis (device, event->button.axes, GDK_AXIS_X, &event->button.x);
gdk_device_get_axis (device, event->button.axes, GDK_AXIS_Y, &event->button.y);
}
event->button.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
event->button.button = xev->detail;
}
if (!set_screen_from_root (display, event, xev->root))
{
return_val = FALSE;
break;
}
set_user_time (event);
break;
}
case XI_Motion:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkDevice *source_device;
event->motion.type = GDK_MOTION_NOTIFY;
event->motion.window = window;
event->motion.time = xev->time;
event->motion.x = (gdouble) xev->event_x;
event->motion.y = (gdouble) xev->event_y;
event->motion.x_root = (gdouble) xev->root_x;
event->motion.y_root = (gdouble) xev->root_y;
event->motion.device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->motion.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
/* There doesn't seem to be motion hints in XI */
event->motion.is_hint = FALSE;
event->motion.axes = translate_axes (event->motion.device,
event->motion.x,
event->motion.y,
event->motion.window,
&xev->valuators);
if (gdk_device_get_mode (event->motion.device) == GDK_MODE_WINDOW)
{
GdkDevice *device = event->motion.device;
/* Update event coordinates from axes */
gdk_device_get_axis (device, event->motion.axes, GDK_AXIS_X, &event->motion.x);
gdk_device_get_axis (device, event->motion.axes, GDK_AXIS_Y, &event->motion.y);
}
}
break;
case XI_Enter:
case XI_Leave:
{
XIEnterEvent *xev = (XIEnterEvent *) ev;
GdkDevice *device, *source_device;
event->crossing.type = (ev->evtype == XI_Enter) ? GDK_ENTER_NOTIFY : GDK_LEAVE_NOTIFY;
event->crossing.x = (gdouble) xev->event_x;
event->crossing.y = (gdouble) xev->event_y;
event->crossing.x_root = (gdouble) xev->root_x;
event->crossing.y_root = (gdouble) xev->root_y;
event->crossing.time = xev->time;
event->crossing.focus = xev->focus;
event->crossing.window = window;
event->crossing.subwindow = gdk_window_lookup_for_display (display, xev->child);
device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (xev->deviceid));
gdk_event_set_device (event, device);
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->crossing.mode = translate_crossing_mode (xev->mode);
event->crossing.detail = translate_notify_type (xev->detail);
event->crossing.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
}
break;
case XI_FocusIn:
case XI_FocusOut:
{
XIEnterEvent *xev = (XIEnterEvent *) ev;
GdkDevice *device, *source_device;
device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
handle_focus_change (window, device, source_device,
xev->detail, xev->mode,
(ev->evtype == XI_FocusIn) ? TRUE : FALSE);
return_val = FALSE;
}
default:
return_val = FALSE;
break;
}
event->any.send_event = cookie->send_event;
if (return_val)
{
if (event->any.window)
g_object_ref (event->any.window);
if (((event->any.type == GDK_ENTER_NOTIFY) ||
(event->any.type == GDK_LEAVE_NOTIFY)) &&
(event->crossing.subwindow != NULL))
g_object_ref (event->crossing.subwindow);
}
else
{
/* Mark this event as having no resources to be freed */
event->any.window = NULL;
event->any.type = GDK_NOTHING;
}
XFreeEventData (dpy, cookie);
return return_val;
}
static GdkEventMask
gdk_device_manager_xi2_get_handled_events (GdkEventTranslator *translator)
{
return (GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_SCROLL_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON2_MOTION_MASK |
GDK_BUTTON3_MOTION_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_FOCUS_CHANGE_MASK);
}
static void
gdk_device_manager_xi2_select_window_events (GdkEventTranslator *translator,
Window window,
GdkEventMask evmask)
{
GdkDeviceManager *device_manager;
XIEventMask event_mask;
device_manager = GDK_DEVICE_MANAGER (translator);
event_mask.deviceid = XIAllMasterDevices;
event_mask.mask = gdk_device_xi2_translate_event_mask (evmask, &event_mask.mask_len);
_gdk_device_manager_xi2_select_events (device_manager, window, &event_mask);
g_free (event_mask.mask);
}
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