void
gimp_undo_create_preview (GimpUndo *undo,
GimpContext *context,
gboolean create_now)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_return_if_fail (context == NULL || GIMP_IS_CONTEXT (context));
if (undo->preview || undo->preview_idle_id)
return;
if (create_now)
{
gimp_undo_create_preview_private (undo, context);
}
else
{
GimpUndoIdle *idle = g_slice_new0 (GimpUndoIdle);
idle->undo = undo;
if (context)
idle->context = g_object_ref (context);
undo->preview_idle_id =
g_idle_add_full (GIMP_VIEWABLE_PRIORITY_IDLE,
gimp_undo_create_preview_idle, idle,
(GDestroyNotify) gimp_undo_idle_free);
}
}
void
gimp_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_signal_emit (undo, undo_signals[FREE], 0, undo_mode);
}
/**
* gimp_undo_reset_age:
* @undo:
*
* Changes the creation time of this undo item to the current time.
*/
void
gimp_undo_reset_age (GimpUndo *undo)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
undo->time = time (NULL);
g_object_notify (G_OBJECT (undo), "time");
}
void
gimp_undo_stack_push_undo (GimpUndoStack *stack,
GimpUndo *undo)
{
g_return_if_fail (GIMP_IS_UNDO_STACK (stack));
g_return_if_fail (GIMP_IS_UNDO (undo));
gimp_container_add (GIMP_CONTAINER (stack->undos), GIMP_OBJECT (undo));
}
/**
* gimp_undo_get_age:
* @undo:
*
* Return value: the time in seconds since this undo item was created
*/
gint
gimp_undo_get_age (GimpUndo *undo)
{
guint now = time (NULL);
g_return_val_if_fail (GIMP_IS_UNDO (undo), 0);
g_return_val_if_fail (now >= undo->time, 0);
return now - undo->time;
}
void
gimp_undo_refresh_preview (GimpUndo *undo,
GimpContext *context)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_return_if_fail (context == NULL || GIMP_IS_CONTEXT (context));
if (undo->preview_idle_id)
return;
if (undo->preview)
{
gimp_temp_buf_unref (undo->preview);
undo->preview = NULL;
gimp_undo_create_preview (undo, context, FALSE);
}
}
void
gimp_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_return_if_fail (accum != NULL);
if (undo->dirty_mask != GIMP_DIRTY_NONE)
{
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
gimp_image_clean (undo->image, undo->dirty_mask);
break;
case GIMP_UNDO_MODE_REDO:
gimp_image_dirty (undo->image, undo->dirty_mask);
break;
}
}
g_signal_emit (undo, undo_signals[POP], 0, undo_mode, accum);
}
