271 lines
8.0 KiB
C
271 lines
8.0 KiB
C
/*
|
|
* Copyright (C) 2010 Daiki Ueno <ueno@unixuser.org>
|
|
* Copyright (C) 2010 Red Hat, Inc.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* SECTION:eek-container
|
|
* @short_description: Base class of a keyboard container
|
|
*
|
|
* The #EekContainerClass class represents a keyboard container, which
|
|
* shall be used to implement #EekKeyboard and #EekSection.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif /* HAVE_CONFIG_H */
|
|
|
|
#include "eek-container.h"
|
|
|
|
enum {
|
|
CHILD_ADDED,
|
|
CHILD_REMOVED,
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
static guint signals[LAST_SIGNAL] = { 0, };
|
|
|
|
G_DEFINE_ABSTRACT_TYPE (EekContainer, eek_container, EEK_TYPE_ELEMENT);
|
|
|
|
#define EEK_CONTAINER_GET_PRIVATE(obj) \
|
|
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), EEK_TYPE_CONTAINER, EekContainerPrivate))
|
|
|
|
|
|
struct _EekContainerPrivate
|
|
{
|
|
GSList *children;
|
|
};
|
|
|
|
static void
|
|
eek_container_real_add_child (EekContainer *self,
|
|
EekElement *child)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
|
|
|
|
g_return_if_fail (EEK_IS_ELEMENT(child));
|
|
g_object_ref_sink (child);
|
|
|
|
priv->children = g_slist_prepend (priv->children, child);
|
|
eek_element_set_parent (child, EEK_ELEMENT(self));
|
|
}
|
|
|
|
static void
|
|
eek_container_real_remove_child (EekContainer *self,
|
|
EekElement *child)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
|
|
GSList *head;
|
|
|
|
g_return_if_fail (EEK_IS_ELEMENT(child));
|
|
head = g_slist_find (priv->children, child);
|
|
g_return_if_fail (head);
|
|
g_object_unref (child);
|
|
priv->children = g_slist_remove_link (priv->children, head);
|
|
eek_element_set_parent (child, NULL);
|
|
}
|
|
|
|
static void
|
|
eek_container_real_foreach_child (EekContainer *self,
|
|
EekCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
|
|
GSList *head;
|
|
|
|
for (head = priv->children; head; head = g_slist_next (head))
|
|
(*callback) (EEK_ELEMENT(head->data), user_data);
|
|
}
|
|
|
|
static EekElement *
|
|
eek_container_real_find (EekContainer *self,
|
|
EekCompareFunc func,
|
|
gpointer user_data)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
|
|
GSList *head;
|
|
|
|
head = g_slist_find_custom (priv->children, user_data, (GCompareFunc)func);
|
|
if (head)
|
|
return head->data;
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
eek_container_dispose (GObject *object)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(object);
|
|
GSList *head;
|
|
|
|
for (head = priv->children; head; head = g_slist_next (head)) {
|
|
if (head->data) {
|
|
g_object_unref (head->data);
|
|
head->data = NULL;
|
|
}
|
|
}
|
|
G_OBJECT_CLASS(eek_container_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
eek_container_finalize (GObject *object)
|
|
{
|
|
EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(object);
|
|
|
|
g_slist_free (priv->children);
|
|
G_OBJECT_CLASS(eek_container_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
eek_container_class_init (EekContainerClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
g_type_class_add_private (gobject_class,
|
|
sizeof (EekContainerPrivate));
|
|
|
|
klass->add_child = eek_container_real_add_child;
|
|
klass->remove_child = eek_container_real_remove_child;
|
|
klass->foreach_child = eek_container_real_foreach_child;
|
|
klass->find = eek_container_real_find;
|
|
|
|
gobject_class->finalize = eek_container_finalize;
|
|
gobject_class->dispose = eek_container_dispose;
|
|
|
|
/**
|
|
* EekContainer::child-added:
|
|
* @container: an #EekContainer
|
|
* @element: an #EekElement
|
|
*
|
|
* The ::child-added signal is emitted each time an element is
|
|
* added to @container.
|
|
*/
|
|
signals[CHILD_ADDED] =
|
|
g_signal_new ("child-added",
|
|
G_TYPE_FROM_CLASS(gobject_class),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET(EekContainerClass, child_added),
|
|
NULL, NULL,
|
|
g_cclosure_marshal_VOID__OBJECT,
|
|
G_TYPE_NONE, 1,
|
|
EEK_TYPE_ELEMENT);
|
|
|
|
/**
|
|
* EekContainer::child-removed:
|
|
* @container: an #EekContainer
|
|
* @element: an #EekElement
|
|
*
|
|
* The ::child-removed signal is emitted each time an element is
|
|
* removed from @container.
|
|
*/
|
|
signals[CHILD_REMOVED] =
|
|
g_signal_new ("child-removed",
|
|
G_TYPE_FROM_CLASS(gobject_class),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET(EekContainerClass, child_removed),
|
|
NULL,
|
|
NULL,
|
|
g_cclosure_marshal_VOID__OBJECT,
|
|
G_TYPE_NONE, 1,
|
|
EEK_TYPE_ELEMENT);
|
|
}
|
|
|
|
static void
|
|
eek_container_init (EekContainer *self)
|
|
{
|
|
EekContainerPrivate *priv;
|
|
|
|
priv = self->priv = EEK_CONTAINER_GET_PRIVATE(self);
|
|
priv->children = NULL;
|
|
}
|
|
|
|
/**
|
|
* eek_container_foreach_child:
|
|
* @container: an #EekContainer
|
|
* @callback: an #EekCallback
|
|
* @user_data: additional data passed to @callback
|
|
*
|
|
* Enumerate children of @container and run @callback with each child.
|
|
*/
|
|
void
|
|
eek_container_foreach_child (EekContainer *container,
|
|
EekCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
g_return_if_fail (EEK_IS_CONTAINER(container));
|
|
EEK_CONTAINER_GET_CLASS(container)->foreach_child (container,
|
|
callback,
|
|
user_data);
|
|
}
|
|
|
|
/**
|
|
* eek_container_find:
|
|
* @container: an #EekContainer
|
|
* @func: function to be used to compare two children
|
|
* @user_data: additional data passed to @func
|
|
*
|
|
* Find a child which matches the criteria supplied as @func, in @container.
|
|
* Returns: an #EekElement or NULL on failure
|
|
*/
|
|
EekElement *
|
|
eek_container_find (EekContainer *container,
|
|
EekCompareFunc func,
|
|
gpointer user_data)
|
|
{
|
|
g_return_val_if_fail (EEK_IS_CONTAINER(container), NULL);
|
|
return EEK_CONTAINER_GET_CLASS(container)->find (container,
|
|
func,
|
|
user_data);
|
|
}
|
|
|
|
struct _FbpData
|
|
{
|
|
EekKey *key;
|
|
gint x, y;
|
|
};
|
|
typedef struct _FbpData FbpData;
|
|
|
|
static gint
|
|
compare_element_by_position (EekElement *element, gpointer user_data)
|
|
{
|
|
EekBounds bounds;
|
|
FbpData *data = user_data;
|
|
|
|
eek_element_get_bounds (element, &bounds);
|
|
if (bounds.x <= data->x && bounds.y <= data->y &&
|
|
data->x <= (bounds.x + bounds.width) &&
|
|
data->y <= (bounds.y + bounds.height))
|
|
return 0;
|
|
return -1;
|
|
}
|
|
|
|
EekElement *
|
|
eek_container_find_by_position (EekContainer *container,
|
|
gdouble x,
|
|
gdouble y)
|
|
{
|
|
EekBounds bounds;
|
|
FbpData data;
|
|
|
|
g_return_val_if_fail (EEK_IS_CONTAINER(container), NULL);
|
|
eek_element_get_bounds (EEK_ELEMENT(container), &bounds);
|
|
data.x = x - bounds.x;
|
|
data.y = y - bounds.y;
|
|
return eek_container_find (container,
|
|
compare_element_by_position,
|
|
&data);
|
|
}
|