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gtk2/gdk/x11/gdkdevicemanager-xi2.c
Matthias Clasen 9b967ab8af XI2: Push error traps around XIQueryDevice calls 
This may help against the crashes at resume time that some
people have been hitting when input devices mysteriously
disappear.
2011-11-30 00:16:43 -05:00

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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 "gdkx11devicemanager-xi2.h"
#include "gdkx11device-xi2.h"
#include "gdkdevicemanagerprivate-core.h"
#include "gdkdeviceprivate.h"
#include "gdkdisplayprivate.h"
#include "gdkeventtranslator.h"
#include "gdkprivate-x11.h"
#include "gdkintl.h"
#include "gdkkeysyms.h"
#ifdef XINPUT_2
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XInput2.h>
#include <string.h>
#endif /* XINPUT_2 */
struct _GdkX11DeviceManagerXI2
{
GdkX11DeviceManagerCore parent_object;
GHashTable *id_table;
GList *devices;
gint opcode;
};
struct _GdkX11DeviceManagerXI2Class
{
GdkDeviceManagerClass parent_class;
};
static void gdk_x11_device_manager_xi2_event_translator_init (GdkEventTranslatorIface *iface);
G_DEFINE_TYPE_WITH_CODE (GdkX11DeviceManagerXI2, gdk_x11_device_manager_xi2, GDK_TYPE_X11_DEVICE_MANAGER_CORE,
G_IMPLEMENT_INTERFACE (GDK_TYPE_EVENT_TRANSLATOR,
gdk_x11_device_manager_xi2_event_translator_init))
#ifdef XINPUT_2
#define HAS_FOCUS(toplevel) ((toplevel)->has_focus || (toplevel)->has_pointer_focus)
static void gdk_x11_device_manager_xi2_constructed (GObject *object);
static void gdk_x11_device_manager_xi2_dispose (GObject *object);
static void gdk_x11_device_manager_xi2_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gdk_x11_device_manager_xi2_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GList * gdk_x11_device_manager_xi2_list_devices (GdkDeviceManager *device_manager,
GdkDeviceType type);
static GdkDevice * gdk_x11_device_manager_xi2_get_client_pointer (GdkDeviceManager *device_manager);
static gboolean gdk_x11_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GdkDisplay *display,
GdkEvent *event,
XEvent *xevent);
static GdkEventMask gdk_x11_device_manager_xi2_get_handled_events (GdkEventTranslator *translator);
static void gdk_x11_device_manager_xi2_select_window_events (GdkEventTranslator *translator,
Window window,
GdkEventMask event_mask);
static GdkWindow * gdk_x11_device_manager_xi2_get_window (GdkEventTranslator *translator,
XEvent *xevent);
enum {
PROP_0,
PROP_OPCODE
};
static void
gdk_x11_device_manager_xi2_class_init (GdkX11DeviceManagerXI2Class *klass)
{
GdkDeviceManagerClass *device_manager_class = GDK_DEVICE_MANAGER_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gdk_x11_device_manager_xi2_constructed;
object_class->dispose = gdk_x11_device_manager_xi2_dispose;
object_class->set_property = gdk_x11_device_manager_xi2_set_property;
object_class->get_property = gdk_x11_device_manager_xi2_get_property;
device_manager_class->list_devices = gdk_x11_device_manager_xi2_list_devices;
device_manager_class->get_client_pointer = gdk_x11_device_manager_xi2_get_client_pointer;
g_object_class_install_property (object_class,
PROP_OPCODE,
g_param_spec_int ("opcode",
P_("Opcode"),
P_("Opcode for XInput2 requests"),
0, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
static void
gdk_x11_device_manager_xi2_init (GdkX11DeviceManagerXI2 *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_x11_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_X11_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 (GdkX11DeviceManagerXI2 *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));
device_manager->devices = g_list_append (device_manager->devices, device);
if (emit_signal)
{
if (dev->use == XISlavePointer || dev->use == XISlaveKeyboard)
{
GdkDevice *master;
/* The device manager is already constructed, then
* keep the hierarchy coherent for the added device.
*/
master = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (dev->attachment));
_gdk_device_set_associated_device (device, master);
_gdk_device_add_slave (master, device);
}
g_signal_emit_by_name (device_manager, "device-added", device);
}
return device;
}
static void
remove_device (GdkX11DeviceManagerXI2 *device_manager,
gint device_id)
{
GdkDevice *device;
device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (device_id));
if (device)
{
device_manager->devices = g_list_remove (device_manager->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_masters (gpointer key,
gpointer value,
gpointer user_data)
{
GdkX11DeviceManagerXI2 *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
relate_slaves (gpointer key,
gpointer value,
gpointer user_data)
{
GdkX11DeviceManagerXI2 *device_manager;
GdkDevice *slave, *master;
device_manager = user_data;
slave = g_hash_table_lookup (device_manager->id_table, key);
master = g_hash_table_lookup (device_manager->id_table, value);
_gdk_device_set_associated_device (slave, master);
_gdk_device_add_slave (master, slave);
}
static void
gdk_x11_device_manager_xi2_constructed (GObject *object)
{
GdkX11DeviceManagerXI2 *device_manager;
GdkDisplay *display;
GdkScreen *screen;
GHashTable *masters, *slaves;
Display *xdisplay;
XIDeviceInfo *info, *dev;
int ndevices, i;
XIEventMask event_mask;
unsigned char mask[2] = { 0 };
device_manager = GDK_X11_DEVICE_MANAGER_XI2 (object);
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (object));
xdisplay = GDK_DISPLAY_XDISPLAY (display);
masters = g_hash_table_new (NULL, NULL);
slaves = g_hash_table_new (NULL, NULL);
info = XIQueryDevice (xdisplay, XIAllDevices, &ndevices);
/* Initialize devices list */
for (i = 0; i < ndevices; i++)
{
dev = &info[i];
if (!dev->enabled)
continue;
add_device (device_manager, dev, FALSE);
if (dev->use == XIMasterPointer ||
dev->use == XIMasterKeyboard)
{
g_hash_table_insert (masters,
GINT_TO_POINTER (dev->deviceid),
GINT_TO_POINTER (dev->attachment));
}
else if (dev->use == XISlavePointer ||
dev->use == XISlaveKeyboard)
{
g_hash_table_insert (slaves,
GINT_TO_POINTER (dev->deviceid),
GINT_TO_POINTER (dev->attachment));
}
}
XIFreeDeviceInfo (info);
/* Stablish relationships between devices */
g_hash_table_foreach (masters, relate_masters, object);
g_hash_table_destroy (masters);
g_hash_table_foreach (slaves, relate_slaves, object);
g_hash_table_destroy (slaves);
/* 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_x11_device_manager_xi2_select_events (GDK_DEVICE_MANAGER (object),
GDK_WINDOW_XID (gdk_screen_get_root_window (screen)),
&event_mask);
}
static void
gdk_x11_device_manager_xi2_dispose (GObject *object)
{
GdkX11DeviceManagerXI2 *device_manager;
device_manager = GDK_X11_DEVICE_MANAGER_XI2 (object);
g_list_free_full (device_manager->devices, g_object_unref);
device_manager->devices = NULL;
if (device_manager->id_table)
{
g_hash_table_destroy (device_manager->id_table);
device_manager->id_table = NULL;
}
G_OBJECT_CLASS (gdk_x11_device_manager_xi2_parent_class)->dispose (object);
}
static GList *
gdk_x11_device_manager_xi2_list_devices (GdkDeviceManager *device_manager,
GdkDeviceType type)
{
GdkX11DeviceManagerXI2 *device_manager_xi2;
GList *cur, *list = NULL;
device_manager_xi2 = GDK_X11_DEVICE_MANAGER_XI2 (device_manager);
for (cur = device_manager_xi2->devices; cur; cur = cur->next)
{
GdkDevice *dev = cur->data;
if (type == gdk_device_get_device_type (dev))
list = g_list_prepend (list, dev);
}
return list;
}
static GdkDevice *
gdk_x11_device_manager_xi2_get_client_pointer (GdkDeviceManager *device_manager)
{
GdkX11DeviceManagerXI2 *device_manager_xi2;
GdkDisplay *display;
int device_id;
device_manager_xi2 = (GdkX11DeviceManagerXI2 *) 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_x11_device_manager_xi2_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GdkX11DeviceManagerXI2 *device_manager;
device_manager = GDK_X11_DEVICE_MANAGER_XI2 (object);
switch (prop_id)
{
case PROP_OPCODE:
device_manager->opcode = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_x11_device_manager_xi2_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GdkX11DeviceManagerXI2 *device_manager;
device_manager = GDK_X11_DEVICE_MANAGER_XI2 (object);
switch (prop_id)
{
case PROP_OPCODE:
g_value_set_int (value, device_manager->opcode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_x11_device_manager_xi2_event_translator_init (GdkEventTranslatorIface *iface)
{
iface->translate_event = gdk_x11_device_manager_xi2_translate_event;
iface->get_handled_events = gdk_x11_device_manager_xi2_get_handled_events;
iface->select_window_events = gdk_x11_device_manager_xi2_select_window_events;
iface->get_window = gdk_x11_device_manager_xi2_get_window;
}
static void
handle_hierarchy_changed (GdkX11DeviceManagerXI2 *device_manager,
XIHierarchyEvent *ev)
{
GdkDisplay *display;
Display *xdisplay;
XIDeviceInfo *info;
int ndevices;
gint i;
display = gdk_device_manager_get_display (GDK_DEVICE_MANAGER (device_manager));
xdisplay = GDK_DISPLAY_XDISPLAY (display);
for (i = 0; i < ev->num_info; i++)
{
if (ev->info[i].flags & XIDeviceEnabled)
{
gdk_x11_display_error_trap_push (display);
info = XIQueryDevice (xdisplay, ev->info[i].deviceid, &ndevices);
gdk_x11_display_error_trap_pop_ignored (display);
if (info)
{
add_device (device_manager, &info[0], TRUE);
XIFreeDeviceInfo (info);
}
}
else if (ev->info[i].flags & XIDeviceDisabled)
remove_device (device_manager, ev->info[i].deviceid);
else if (ev->info[i].flags & XISlaveAttached ||
ev->info[i].flags & XISlaveDetached)
{
GdkDevice *master, *slave;
slave = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (ev->info[i].deviceid));
/* Remove old master info */
master = gdk_device_get_associated_device (slave);
if (master)
{
_gdk_device_remove_slave (master, slave);
_gdk_device_set_associated_device (slave, NULL);
g_signal_emit_by_name (device_manager, "device-changed", master);
}
/* Add new master if it's an attachment event */
if (ev->info[i].flags & XISlaveAttached)
{
gdk_x11_display_error_trap_push (display);
info = XIQueryDevice (xdisplay, ev->info[i].deviceid, &ndevices);
gdk_x11_display_error_trap_pop_ignored (display);
if (info)
{
master = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (info->attachment));
XIFreeDeviceInfo (info);
_gdk_device_set_associated_device (slave, master);
_gdk_device_add_slave (master, slave);
g_signal_emit_by_name (device_manager, "device-changed", master);
}
}
g_signal_emit_by_name (device_manager, "device-changed", slave);
}
}
}
static void
handle_device_changed (GdkX11DeviceManagerXI2 *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 (gint 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 (gint 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
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;
gdouble *axes;
gdouble *vals;
g_object_get (device, "n-axes", &n_axes, NULL);
axes = g_new0 (gdouble, n_axes);
vals = valuators->values;
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_x11_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_X11_DEVICE_MANAGER_XI2 (translator)->id_table,
GUINT_TO_POINTER (((XIDeviceEvent *) ev)->deviceid));
serial = _gdk_display_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_x11_window_lookup_for_display (display, xev->event);
}
break;
}
return window;
}
static gboolean
gdk_x11_device_manager_xi2_translate_core_event (GdkEventTranslator *translator,
GdkDisplay *display,
GdkEvent *event,
XEvent *xevent)
{
GdkEventTranslatorIface *parent_iface;
gboolean keyboard = FALSE;
GdkDevice *device;
if ((xevent->type == KeyPress || xevent->type == KeyRelease) &&
(xevent->xkey.keycode == 0 || xevent->xkey.serial == 0))
{
/* The X input methods (when triggered via XFilterEvent)
* generate a core key press event with keycode 0 to signal the
* end of a key sequence. We use the core translate_event
* implementation to translate this event.
*
* Other less educated IM modules like to filter every keypress,
* only to have these replaced by their own homegrown events,
* these events oddly have serial=0, so we try to catch these.
*
* This is just a bandaid fix to keep xim working with a single
* keyboard until XFilterEvent learns about XI2.
*/
keyboard = TRUE;
}
else if (xevent->xany.send_event)
{
/* If another process sends us core events, process them; we
* assume that it won't send us redundant core and XI2 events.
* (At the moment, it's not possible to send XI2 events anyway.
* In the future, an app that was trying to decide whether to
* send core or XI2 events could look at the event mask on the
* window to see which kind we are listening to.)
*/
switch (xevent->type)
{
case KeyPress:
case KeyRelease:
case FocusIn:
case FocusOut:
keyboard = TRUE;
break;
case ButtonPress:
case ButtonRelease:
case MotionNotify:
case EnterNotify:
case LeaveNotify:
break;
default:
return FALSE;
}
}
else
return FALSE;
parent_iface = g_type_interface_peek_parent (GDK_EVENT_TRANSLATOR_GET_IFACE (translator));
if (!parent_iface->translate_event (translator, display, event, xevent))
return FALSE;
/* The core device manager sets a core device on the event.
* We need to override that with an XI2 device, since we are
* using XI2.
*/
device = gdk_x11_device_manager_xi2_get_client_pointer ((GdkDeviceManager *)translator);
if (keyboard)
device = gdk_device_get_associated_device (device);
gdk_event_set_device (event, device);
return TRUE;
}
static gboolean
gdk_x11_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GdkDisplay *display,
GdkEvent *event,
XEvent *xevent)
{
GdkX11DeviceManagerXI2 *device_manager;
XGenericEventCookie *cookie;
gboolean return_val = TRUE;
GdkWindow *window;
XIEvent *ev;
device_manager = (GdkX11DeviceManagerXI2 *) translator;
cookie = &xevent->xcookie;
if (xevent->type != GenericEvent)
return gdk_x11_device_manager_xi2_translate_core_event (translator, display, event, xevent);
else if (cookie->extension != device_manager->opcode)
return FALSE;
ev = (XIEvent *) cookie->data;
if (!ev)
return FALSE;
window = get_event_window (translator, ev);
if (window && GDK_WINDOW_DESTROYED (window))
return FALSE;
if (ev->evtype == XI_Motion ||
ev->evtype == XI_ButtonRelease)
{
if (_gdk_x11_moveresize_handle_event (xevent))
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_x11_device_xi2_translate_state (&xev->mods, &xev->buttons, &xev->group);
event->key.group = _gdk_x11_get_group_for_state (display, event->key.state);
event->key.hardware_keycode = xev->detail;
event->key.is_modifier = _gdk_x11_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_x11_keymap_add_virt_mods (keymap, &state);
event->key.state |= state;
_gdk_x11_event_translate_keyboard_string (&event->key);
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:
/* Button presses of button 4-7 are scroll events */
if (ev->evtype == XI_ButtonPress)
{
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_x11_device_xi2_translate_state (&xev->mods, &xev->buttons, &xev->group);
break;
}
/* Button presses of button 4-7 are scroll events, so ignore the release */
else if (ev->evtype == XI_ButtonRelease)
{
return_val = FALSE;
break;
}
/* else (XI_ButtonRelease) fall thru */
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_x11_device_xi2_translate_state (&xev->mods, &xev->buttons, &xev->group);
event->button.button = xev->detail;
}
if (return_val == FALSE)
break;
if (!set_screen_from_root (display, event, xev->root))
{
return_val = FALSE;
break;
}
if (ev->evtype == XI_ButtonPress)
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_x11_device_xi2_translate_state (&xev->mods, &xev->buttons, &xev->group);
/* 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_x11_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_x11_device_xi2_translate_state (&xev->mods, &xev->buttons, &xev->group);
}
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;
}
break;
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;
}
return return_val;
}
static GdkEventMask
gdk_x11_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_x11_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_x11_device_xi2_translate_event_mask (evmask, &event_mask.mask_len);
_gdk_x11_device_manager_xi2_select_events (device_manager, window, &event_mask);
g_free (event_mask.mask);
}
static GdkWindow *
gdk_x11_device_manager_xi2_get_window (GdkEventTranslator *translator,
XEvent *xevent)
{
GdkX11DeviceManagerXI2 *device_manager;
XIEvent *ev;
device_manager = (GdkX11DeviceManagerXI2 *) translator;
if (xevent->type != GenericEvent ||
xevent->xcookie.extension != device_manager->opcode)
return NULL;
ev = (XIEvent *) xevent->xcookie.data;
return get_event_window (translator, ev);
}
#else /* XINPUT_2 */
static void
gdk_x11_device_manager_xi2_class_init (GdkX11DeviceManagerXI2Class *klass)
{
}
static void
gdk_x11_device_manager_xi2_init (GdkX11DeviceManagerXI2 *device_manager)
{
}
static void
gdk_x11_device_manager_xi2_event_translator_init (GdkEventTranslatorIface *iface)
{
}
#endif /* XINPUT_2 */
GdkDevice *
_gdk_x11_device_manager_xi2_lookup (GdkX11DeviceManagerXI2 *device_manager_xi2,
gint device_id)
{
return g_hash_table_lookup (device_manager_xi2->id_table,
GINT_TO_POINTER (device_id));
}
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