<commit_before>/*
 * Clutter.
 *
 * An OpenGL based 'interactive canvas' library.
 *
 * Authored By <NAME>  <<EMAIL>>
 *
 * Copyright (C) 2006 OpenedHand
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "clutter-keysyms.h"
#include "clutter-keysyms-table.h"
#include "clutter-event.h"
#include "clutter-private.h"
#include "clutter-debug.h"

/**
 * SECTION:clutter-event
 * @short_description: User and window system events
 *
 * Windowing events handled by Clutter.
 */

/**
 * clutter_event_type:
 * @event: a #ClutterEvent
 *
 * Retrieves the type of the event.
 *
 * Return value: a #ClutterEventType
 */
ClutterEventType
clutter_event_type (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, CLUTTER_NOTHING);

  return event->type;
}

/**
 * clutter_event_get_time:
 * @event: a #ClutterEvent
 *
 * Retrieves the time of the event.
 *
 * Return value: the time of the event, or %CLUTTER_CURRENT_TIME
 *
 * Since: 0.4
 */
guint32
clutter_event_get_time (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, CLUTTER_CURRENT_TIME);

  return event->any.time;
}

/**
 * clutter_event_get_state:
 * @event: a #ClutterEvent
 *
 * Retrieves the modifier state of the event.
 *
 * Return value: the modifier state parameter, or 0
 *
 * Since: 0.4
 */
ClutterModifierType
clutter_event_get_state (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, 0);

  switch (event->type)
    {
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
      return event->key.modifier_state;
    case CLUTTER_BUTTON_PRESS:
      return event->button.modifier_state;
    case CLUTTER_MOTION:
      return event->motion.modifier_state;
    case CLUTTER_SCROLL:
      return event->scroll.modifier_state;
    default:
      break;
    }

  return 0;
}

/**
 * clutter_event_get_coords:
 * @event: a #ClutterEvent
 * @x: return location for the X coordinate
 * @y: return location for the Y coordinate
 *
 * Retrieves the coordinates of @event and puts them into @x and @y.
 *
 * Since: 0.4
 */
void
clutter_event_get_coords (ClutterEvent *event,
                          gint         *x,
                          gint         *y)
{
  gint event_x, event_y;

  g_return_if_fail (event != NULL);

  event_x = event_y = 0;

  switch (event->type)
    {
    case CLUTTER_NOTHING:
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
    case CLUTTER_STAGE_STATE:
    case CLUTTER_DESTROY_NOTIFY:
    case CLUTTER_CLIENT_MESSAGE:
    case CLUTTER_DELETE:
    case CLUTTER_ENTER:
    case CLUTTER_LEAVE:
      break;
    case CLUTTER_BUTTON_PRESS:
    case CLUTTER_BUTTON_RELEASE:
      event_x = event->button.x;
      event_y = event->button.y;
      break;
    case CLUTTER_MOTION:
      event_x = event->motion.x;
      event_y = event->motion.y;
      break;
    case CLUTTER_SCROLL:
      event_x = event->scroll.x;
      event_y = event->scroll.y;
      break;
    }

  if (x)
    *x = event_x;

  if (y)
    *y = event_y;
}

/**
 * clutter_event_get_source:
 * @event: a #ClutterEvent
 *
 * Retrieves the source #ClutterActor the event originated from, or
 * NULL if the event has no source.
 *
 * Return value: (transfer none): a #ClutterActor
 *
 * Since: 0.6
 */
ClutterActor*
clutter_event_get_source (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, NULL);

  return event->any.source;
}

/**
 * clutter_event_get_stage:
 * @event: a #ClutterEvent
 *
 * Retrieves the source #ClutterStage the event originated for, or
 * NULL if the event has no stage.
 *
 * Return value: (transfer none): a #ClutterStage
 *
 * Since: 0.8
 */
ClutterStage*
clutter_event_get_stage (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, NULL);

  return event->any.stage;
}

/**
 * clutter_button_event_button:
 * @buttev: a #ClutterButtonEvent
 *
 * Retrieve the button number of the event.
 *
 * Return value: the button number.
 *
 * Since: 0.4
 */
guint32
clutter_button_event_button (ClutterButtonEvent *buttev)
{
  g_return_val_if_fail (buttev != NULL, 0);

  return buttev->button;
}

/* keys */

/**
 * clutter_key_event_symbol:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the symbol of the key that caused @keyev.
 *
 * Return value: The key symbol representing the key
 */
guint
clutter_key_event_symbol (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  return keyev->keyval;
}

/**
 * clutter_key_event_code:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the keycode of the key that caused @keyev.
 *
 * Return value: The keycode representing the key
 */
guint16
clutter_key_event_code (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  return keyev->hardware_keycode;
}

/**
 * clutter_key_event_unicode:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the unicode value for the key that caused @keyev.
 *
 * Return value: The unicode value representing the key
 */
guint32
clutter_key_event_unicode (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  if (keyev->unicode_value)
    return keyev->unicode_value;
  else
    return clutter_keysym_to_unicode (keyev->keyval);
}

/**
 * clutter_keysym_to_unicode:
 * @keyval: a key symbol 
 * 
 * Convert from a Clutter key symbol to the corresponding ISO10646 (Unicode)
 * character.
 * 
 * Return value: the corresponding unicode character, or 0 if there
 *               is no corresponding character.
 **/
guint32
clutter_keysym_to_unicode (guint keyval)
{
  int min = 0;
  int max = G_N_ELEMENTS (clutter_keysym_to_unicode_tab) - 1;
  int mid;

  /* First check for Latin-1 characters (1:1 mapping) */
  if ((keyval >= 0x0020 && keyval <= 0x007e) ||
      (keyval >= 0x00a0 && keyval <= 0x00ff))
    return keyval;

  /* Also check for directly encoded 24-bit UCS characters:
   */
  if ((keyval & 0xff000000) == 0x01000000)
    return keyval & 0x00ffffff;

  /* binary search in table */
  while (max >= min) {
    mid = (min + max) / 2;
    if (clutter_keysym_to_unicode_tab[mid].keysym < keyval)
      min = mid + 1;
    else if (clutter_keysym_to_unicode_tab[mid].keysym > keyval)
      max = mid - 1;
    else {
      /* found it */
      return clutter_keysym_to_unicode_tab[mid].ucs;
    }
  }
 
  /* No matching Unicode value found */
  return 0;
}

/**
 * clutter_event_get_device_id:
 * @event: a clutter event 
 * 
 * Retrieves the events device id if set.
 * 
 * Return value: A unique identifier for the device or -1 if the event has
 *               no specific device set.
 **/
gint
clutter_event_get_device_id (ClutterEvent *event)
{
  ClutterInputDevice *device = NULL;

  g_return_val_if_fail (event != NULL, -1);

  switch (event->type)
    {
    case CLUTTER_NOTHING:
    case CLUTTER_STAGE_STATE:
    case CLUTTER_DESTROY_NOTIFY:
    case CLUTTER_CLIENT_MESSAGE:
    case CLUTTER_DELETE:
    case CLUTTER_ENTER:
    case CLUTTER_LEAVE:
      break;
    case CLUTTER_BUTTON_PRESS:
    case CLUTTER_BUTTON_RELEASE:
      device = event->button.device;
      break;
    case CLUTTER_MOTION:
      device = event->motion.device;
      break;
    case CLUTTER_SCROLL:
      device = event->scroll.device;
      break;
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
      break;
    }

  if (device)
    return device->id;
  else
    return -1;
}


GType
clutter_event_get_type (void)
{
  static GType our_type = 0;

  if (!our_type)
    our_type = g_boxed_type_register_static (I_("ClutterEvent"),
		    			     (GBoxedCopyFunc) clutter_event_copy,
					     (GBoxedFreeFunc) clutter_event_free);
  return our_type;
}

/**
 * clutter_event_new:
 * @type: The type of event.
 *
 * Creates a new #ClutterEvent of the specified type.
 *
 * Return value: A newly allocated #ClutterEvent.
 */
ClutterEvent *
clutter_event_new (ClutterEventType type)
{
  ClutterEvent *new_event;

  new_event = g_slice_new0 (ClutterEvent);
  new_event->type = new_event->any.type = type;

  return new_event;
}

/**
 * clutter_event_copy:
 * @event: A #ClutterEvent.
 *
 * Copies @event.
 *
 * Return value: A newly allocated #ClutterEvent
 */
ClutterEvent *
clutter_event_copy (ClutterEvent *event)
{
  ClutterEvent *new_event;

  g_return_val_if_fail (event != NULL, NULL);

  new_event = clutter_event_new (CLUTTER_NOTHING);
  *new_event = *event;

  return new_event;
}

/**
 * clutter_event_free:
 * @event: A #ClutterEvent.
 *
 * Frees all resources used by @event.
 */
void
clutter_event_free (ClutterEvent *event)
{
  if (G_LIKELY (event))
    {
      g_slice_free (ClutterEvent, event);
    }
}

/**
 * clutter_event_get:
 *
 * Pops an event off the event queue. Applications should not need to call 
 * this.
 *
 * Return value: A #ClutterEvent or NULL if queue empty
 *
 * Since: 0.4
 */
ClutterEvent *
clutter_event_get (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  if (!context->events_queue)
    return NULL;

  if (g_queue_is_empty (context->events_queue))
    return NULL;

  return g_queue_pop_tail (context->events_queue);
}

/**
 * clutter_event_peek:
 * 
 * Returns a pointer to the first event from the event queue but 
 * does not remove it. 
 *
 * Return value: (transfer none): A #ClutterEvent or NULL if queue empty.
 *
 * Since: 0.4
 */
ClutterEvent *
clutter_event_peek (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, NULL);
  
  if (context->events_queue == NULL)
    return NULL;

  if (g_queue_is_empty (context->events_queue))
    return NULL;

  return g_queue_peek_tail (context->events_queue);
}

/**
 * clutter_event_put:
 * @event: a #ClutterEvent
 *
 * Puts a copy of the event on the back of the event queue. The event will have
 * the #CLUTTER_EVENT_FLAG_SYNTHETIC flag set. If the source is set event
 * signals will be emitted for this source and capture/bubbling for it's
 * ancestors. If the source is not set it will be generated by picking or use
 * the actor that currently has keyboard focus.
 *
 * Since: 0.6
 */
void
clutter_event_put (ClutterEvent *event)
{
  ClutterMainContext *context = clutter_context_get_default ();
  ClutterEvent       *event_copy;

  /* FIXME: check queue is valid */
  g_return_if_fail (context != NULL);

  event_copy = clutter_event_copy (event);
  event_copy->any.flags |= CLUTTER_EVENT_FLAG_SYNTHETIC;

  g_queue_push_head (context->events_queue, event_copy);
}

/**
 * clutter_events_pending:
 *
 * Checks if events are pending in the event queue.
 *
 * Return value: TRUE if there are pending events, FALSE otherwise.
 *
 * Since: 0.4
 */
gboolean
clutter_events_pending (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, FALSE);

  if (!context->events_queue)
    return FALSE;

  return g_queue_is_empty (context->events_queue) == FALSE;
}

/**
 * clutter_get_current_event_time:
 *
 * Retrieves the timestamp of the last event, if there is an
 * event or if the event has a timestamp.
 *
 * Return value: the event timestamp, or %CLUTTER_CURRENT_TIME
 *
 * Since: 1.0
 */
guint32
clutter_get_current_event_time (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, FALSE);

  if (context->last_event_time != 0)
    return context->last_event_time;

  return CLUTTER_CURRENT_TIME;
}
<commit_msg>[events] Added handling of missing type to clutter_event_get_state<commit_after>/*
 * Clutter.
 *
 * An OpenGL based 'interactive canvas' library.
 *
 * Authored By <NAME>  <<EMAIL>>
 *
 * Copyright (C) 2006 OpenedHand
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "clutter-keysyms.h"
#include "clutter-keysyms-table.h"
#include "clutter-event.h"
#include "clutter-private.h"
#include "clutter-debug.h"

/**
 * SECTION:clutter-event
 * @short_description: User and window system events
 *
 * Windowing events handled by Clutter.
 */

/**
 * clutter_event_type:
 * @event: a #ClutterEvent
 *
 * Retrieves the type of the event.
 *
 * Return value: a #ClutterEventType
 */
ClutterEventType
clutter_event_type (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, CLUTTER_NOTHING);

  return event->type;
}

/**
 * clutter_event_get_time:
 * @event: a #ClutterEvent
 *
 * Retrieves the time of the event.
 *
 * Return value: the time of the event, or %CLUTTER_CURRENT_TIME
 *
 * Since: 0.4
 */
guint32
clutter_event_get_time (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, CLUTTER_CURRENT_TIME);

  return event->any.time;
}

/**
 * clutter_event_get_state:
 * @event: a #ClutterEvent
 *
 * Retrieves the modifier state of the event.
 *
 * Return value: the modifier state parameter, or 0
 *
 * Since: 0.4
 */
ClutterModifierType
clutter_event_get_state (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, 0);

  switch (event->type)
    {
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
      return event->key.modifier_state;
    case CLUTTER_BUTTON_PRESS:
    case CLUTTER_BUTTON_RELEASE:
      return event->button.modifier_state;
    case CLUTTER_MOTION:
      return event->motion.modifier_state;
    case CLUTTER_SCROLL:
      return event->scroll.modifier_state;
    default:
      break;
    }

  return 0;
}

/**
 * clutter_event_get_coords:
 * @event: a #ClutterEvent
 * @x: return location for the X coordinate
 * @y: return location for the Y coordinate
 *
 * Retrieves the coordinates of @event and puts them into @x and @y.
 *
 * Since: 0.4
 */
void
clutter_event_get_coords (ClutterEvent *event,
                          gint         *x,
                          gint         *y)
{
  gint event_x, event_y;

  g_return_if_fail (event != NULL);

  event_x = event_y = 0;

  switch (event->type)
    {
    case CLUTTER_NOTHING:
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
    case CLUTTER_STAGE_STATE:
    case CLUTTER_DESTROY_NOTIFY:
    case CLUTTER_CLIENT_MESSAGE:
    case CLUTTER_DELETE:
    case CLUTTER_ENTER:
    case CLUTTER_LEAVE:
      break;
    case CLUTTER_BUTTON_PRESS:
    case CLUTTER_BUTTON_RELEASE:
      event_x = event->button.x;
      event_y = event->button.y;
      break;
    case CLUTTER_MOTION:
      event_x = event->motion.x;
      event_y = event->motion.y;
      break;
    case CLUTTER_SCROLL:
      event_x = event->scroll.x;
      event_y = event->scroll.y;
      break;
    }

  if (x)
    *x = event_x;

  if (y)
    *y = event_y;
}

/**
 * clutter_event_get_source:
 * @event: a #ClutterEvent
 *
 * Retrieves the source #ClutterActor the event originated from, or
 * NULL if the event has no source.
 *
 * Return value: (transfer none): a #ClutterActor
 *
 * Since: 0.6
 */
ClutterActor*
clutter_event_get_source (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, NULL);

  return event->any.source;
}

/**
 * clutter_event_get_stage:
 * @event: a #ClutterEvent
 *
 * Retrieves the source #ClutterStage the event originated for, or
 * NULL if the event has no stage.
 *
 * Return value: (transfer none): a #ClutterStage
 *
 * Since: 0.8
 */
ClutterStage*
clutter_event_get_stage (ClutterEvent *event)
{
  g_return_val_if_fail (event != NULL, NULL);

  return event->any.stage;
}

/**
 * clutter_button_event_button:
 * @buttev: a #ClutterButtonEvent
 *
 * Retrieve the button number of the event.
 *
 * Return value: the button number.
 *
 * Since: 0.4
 */
guint32
clutter_button_event_button (ClutterButtonEvent *buttev)
{
  g_return_val_if_fail (buttev != NULL, 0);

  return buttev->button;
}

/* keys */

/**
 * clutter_key_event_symbol:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the symbol of the key that caused @keyev.
 *
 * Return value: The key symbol representing the key
 */
guint
clutter_key_event_symbol (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  return keyev->keyval;
}

/**
 * clutter_key_event_code:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the keycode of the key that caused @keyev.
 *
 * Return value: The keycode representing the key
 */
guint16
clutter_key_event_code (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  return keyev->hardware_keycode;
}

/**
 * clutter_key_event_unicode:
 * @keyev: A #ClutterKeyEvent
 *
 * Retrieves the unicode value for the key that caused @keyev.
 *
 * Return value: The unicode value representing the key
 */
guint32
clutter_key_event_unicode (ClutterKeyEvent *keyev)
{
  g_return_val_if_fail (keyev != NULL, 0);

  if (keyev->unicode_value)
    return keyev->unicode_value;
  else
    return clutter_keysym_to_unicode (keyev->keyval);
}

/**
 * clutter_keysym_to_unicode:
 * @keyval: a key symbol 
 * 
 * Convert from a Clutter key symbol to the corresponding ISO10646 (Unicode)
 * character.
 * 
 * Return value: the corresponding unicode character, or 0 if there
 *               is no corresponding character.
 **/
guint32
clutter_keysym_to_unicode (guint keyval)
{
  int min = 0;
  int max = G_N_ELEMENTS (clutter_keysym_to_unicode_tab) - 1;
  int mid;

  /* First check for Latin-1 characters (1:1 mapping) */
  if ((keyval >= 0x0020 && keyval <= 0x007e) ||
      (keyval >= 0x00a0 && keyval <= 0x00ff))
    return keyval;

  /* Also check for directly encoded 24-bit UCS characters:
   */
  if ((keyval & 0xff000000) == 0x01000000)
    return keyval & 0x00ffffff;

  /* binary search in table */
  while (max >= min) {
    mid = (min + max) / 2;
    if (clutter_keysym_to_unicode_tab[mid].keysym < keyval)
      min = mid + 1;
    else if (clutter_keysym_to_unicode_tab[mid].keysym > keyval)
      max = mid - 1;
    else {
      /* found it */
      return clutter_keysym_to_unicode_tab[mid].ucs;
    }
  }
 
  /* No matching Unicode value found */
  return 0;
}

/**
 * clutter_event_get_device_id:
 * @event: a clutter event 
 * 
 * Retrieves the events device id if set.
 * 
 * Return value: A unique identifier for the device or -1 if the event has
 *               no specific device set.
 **/
gint
clutter_event_get_device_id (ClutterEvent *event)
{
  ClutterInputDevice *device = NULL;

  g_return_val_if_fail (event != NULL, -1);

  switch (event->type)
    {
    case CLUTTER_NOTHING:
    case CLUTTER_STAGE_STATE:
    case CLUTTER_DESTROY_NOTIFY:
    case CLUTTER_CLIENT_MESSAGE:
    case CLUTTER_DELETE:
    case CLUTTER_ENTER:
    case CLUTTER_LEAVE:
      break;
    case CLUTTER_BUTTON_PRESS:
    case CLUTTER_BUTTON_RELEASE:
      device = event->button.device;
      break;
    case CLUTTER_MOTION:
      device = event->motion.device;
      break;
    case CLUTTER_SCROLL:
      device = event->scroll.device;
      break;
    case CLUTTER_KEY_PRESS:
    case CLUTTER_KEY_RELEASE:
      break;
    }

  if (device)
    return device->id;
  else
    return -1;
}


GType
clutter_event_get_type (void)
{
  static GType our_type = 0;

  if (!our_type)
    our_type = g_boxed_type_register_static (I_("ClutterEvent"),
		    			     (GBoxedCopyFunc) clutter_event_copy,
					     (GBoxedFreeFunc) clutter_event_free);
  return our_type;
}

/**
 * clutter_event_new:
 * @type: The type of event.
 *
 * Creates a new #ClutterEvent of the specified type.
 *
 * Return value: A newly allocated #ClutterEvent.
 */
ClutterEvent *
clutter_event_new (ClutterEventType type)
{
  ClutterEvent *new_event;

  new_event = g_slice_new0 (ClutterEvent);
  new_event->type = new_event->any.type = type;

  return new_event;
}

/**
 * clutter_event_copy:
 * @event: A #ClutterEvent.
 *
 * Copies @event.
 *
 * Return value: A newly allocated #ClutterEvent
 */
ClutterEvent *
clutter_event_copy (ClutterEvent *event)
{
  ClutterEvent *new_event;

  g_return_val_if_fail (event != NULL, NULL);

  new_event = clutter_event_new (CLUTTER_NOTHING);
  *new_event = *event;

  return new_event;
}

/**
 * clutter_event_free:
 * @event: A #ClutterEvent.
 *
 * Frees all resources used by @event.
 */
void
clutter_event_free (ClutterEvent *event)
{
  if (G_LIKELY (event))
    {
      g_slice_free (ClutterEvent, event);
    }
}

/**
 * clutter_event_get:
 *
 * Pops an event off the event queue. Applications should not need to call 
 * this.
 *
 * Return value: A #ClutterEvent or NULL if queue empty
 *
 * Since: 0.4
 */
ClutterEvent *
clutter_event_get (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  if (!context->events_queue)
    return NULL;

  if (g_queue_is_empty (context->events_queue))
    return NULL;

  return g_queue_pop_tail (context->events_queue);
}

/**
 * clutter_event_peek:
 * 
 * Returns a pointer to the first event from the event queue but 
 * does not remove it. 
 *
 * Return value: (transfer none): A #ClutterEvent or NULL if queue empty.
 *
 * Since: 0.4
 */
ClutterEvent *
clutter_event_peek (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, NULL);
  
  if (context->events_queue == NULL)
    return NULL;

  if (g_queue_is_empty (context->events_queue))
    return NULL;

  return g_queue_peek_tail (context->events_queue);
}

/**
 * clutter_event_put:
 * @event: a #ClutterEvent
 *
 * Puts a copy of the event on the back of the event queue. The event will have
 * the #CLUTTER_EVENT_FLAG_SYNTHETIC flag set. If the source is set event
 * signals will be emitted for this source and capture/bubbling for it's
 * ancestors. If the source is not set it will be generated by picking or use
 * the actor that currently has keyboard focus.
 *
 * Since: 0.6
 */
void
clutter_event_put (ClutterEvent *event)
{
  ClutterMainContext *context = clutter_context_get_default ();
  ClutterEvent       *event_copy;

  /* FIXME: check queue is valid */
  g_return_if_fail (context != NULL);

  event_copy = clutter_event_copy (event);
  event_copy->any.flags |= CLUTTER_EVENT_FLAG_SYNTHETIC;

  g_queue_push_head (context->events_queue, event_copy);
}

/**
 * clutter_events_pending:
 *
 * Checks if events are pending in the event queue.
 *
 * Return value: TRUE if there are pending events, FALSE otherwise.
 *
 * Since: 0.4
 */
gboolean
clutter_events_pending (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, FALSE);

  if (!context->events_queue)
    return FALSE;

  return g_queue_is_empty (context->events_queue) == FALSE;
}

/**
 * clutter_get_current_event_time:
 *
 * Retrieves the timestamp of the last event, if there is an
 * event or if the event has a timestamp.
 *
 * Return value: the event timestamp, or %CLUTTER_CURRENT_TIME
 *
 * Since: 1.0
 */
guint32
clutter_get_current_event_time (void)
{
  ClutterMainContext *context = clutter_context_get_default ();

  g_return_val_if_fail (context != NULL, FALSE);

  if (context->last_event_time != 0)
    return context->last_event_time;

  return CLUTTER_CURRENT_TIME;
}

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{'dir': 'git-commits-cleaned', 'id': '1423785', 'n_tokens_mistral': 8662, 'n_tokens_neox': 8313, 'n_words': 2305}