gtk2/gtk/gtkactionbar.c

594 lines
19 KiB
C

/*
* Copyright (c) 2013 - 2014 Red Hat, Inc.
*
* This program 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 program 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 program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "gtkactionbar.h"
#include "gtkintl.h"
#include "gtkaccessible.h"
#include "gtkbuildable.h"
#include "gtktypebuiltins.h"
#include "gtkbox.h"
#include "gtkrevealer.h"
#include "gtkwidgetprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkprivate.h"
#include "gtkcenterbox.h"
#include <string.h>
/**
* SECTION:gtkactionbar
* @Short_description: A full width bar for presenting contextual actions
* @Title: GtkActionBar
* @See_also: #GtkBox
*
* GtkActionBar is designed to present contextual actions. It is
* expected to be displayed below the content and expand horizontally
* to fill the area.
*
* It allows placing children at the start or the end. In addition, it
* contains an internal centered box which is centered with respect to
* the full width of the box, even if the children at either side take
* up different amounts of space.
*
* # CSS nodes
*
* GtkActionBar has a single CSS node with name actionbar.
*/
struct _GtkActionBarPrivate
{
GtkWidget *center_box;
GtkWidget *start_box;
GtkWidget *end_box;
GtkWidget *revealer;
};
enum {
CHILD_PROP_0,
CHILD_PROP_PACK_TYPE,
CHILD_PROP_POSITION
};
enum {
PROP_0,
PROP_REVEALED,
LAST_PROP
};
static GParamSpec *props[LAST_PROP] = { NULL, };
static void gtk_action_bar_buildable_interface_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkActionBar, gtk_action_bar, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkActionBar)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_action_bar_buildable_interface_init))
static void
gtk_action_bar_add (GtkContainer *container,
GtkWidget *child)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (container));
/* Default for pack-type is start */
gtk_container_add (GTK_CONTAINER (priv->start_box), child);
}
static void
gtk_action_bar_remove (GtkContainer *container,
GtkWidget *child)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (container));
if (gtk_widget_get_parent (child) == priv->start_box)
gtk_container_remove (GTK_CONTAINER (priv->start_box), child);
else if (gtk_widget_get_parent (child) == priv->end_box)
gtk_container_remove (GTK_CONTAINER (priv->end_box), child);
else if (child == gtk_center_box_get_center_widget (GTK_CENTER_BOX (priv->center_box)))
gtk_center_box_set_center_widget (GTK_CENTER_BOX (priv->center_box), NULL);
else
g_warning ("Can't remove non-child %s %p from GtkActionBar %p",
G_OBJECT_TYPE_NAME (child), child, container);
}
static void
gtk_action_bar_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (container));
if (priv->start_box != NULL)
gtk_container_forall (GTK_CONTAINER (priv->start_box), callback, callback_data);
if (gtk_center_box_get_center_widget (GTK_CENTER_BOX (priv->center_box)) != NULL)
(*callback) (gtk_center_box_get_center_widget (GTK_CENTER_BOX (priv->center_box)), callback_data);
if (priv->end_box != NULL)
gtk_container_forall (GTK_CONTAINER (priv->end_box), callback, callback_data);
}
static void
gtk_action_bar_finalize (GObject *object)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (object));
gtk_widget_unparent (priv->revealer);
G_OBJECT_CLASS (gtk_action_bar_parent_class)->finalize (object);
}
static GType
gtk_action_bar_child_type (GtkContainer *container)
{
return GTK_TYPE_WIDGET;
}
static void
gtk_action_bar_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (container));
switch (property_id)
{
case CHILD_PROP_PACK_TYPE:
if (gtk_widget_get_parent (child) == priv->start_box)
g_value_set_enum (value, GTK_PACK_START);
else if (gtk_widget_get_parent (child) == priv->end_box)
g_value_set_enum (value, GTK_PACK_END);
else /* Center widget */
g_value_set_enum (value, GTK_PACK_START);
break;
case CHILD_PROP_POSITION:
if (gtk_widget_get_parent (child) == priv->start_box)
{
int n;
gtk_container_child_get (GTK_CONTAINER (priv->start_box),
child,
"position", &n,
NULL);
g_value_set_int (value, n);
}
else if (gtk_widget_get_parent (child) == priv->end_box)
{
int n;
gtk_container_child_get (GTK_CONTAINER (priv->end_box),
child,
"position", &n,
NULL);
g_value_set_int (value, n);
}
else /* Center widget */
{
g_value_set_int (value, 0);
}
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_action_bar_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (container));
switch (property_id)
{
case CHILD_PROP_PACK_TYPE:
if (gtk_widget_get_parent (child) == priv->start_box)
{
if (g_value_get_enum (value) == GTK_PACK_END)
{
g_object_ref (child);
gtk_container_remove (GTK_CONTAINER (priv->start_box), child);
gtk_box_pack_end (GTK_BOX (priv->end_box), child);
g_object_unref (child);
}
}
else if (gtk_widget_get_parent (child) == priv->end_box)
{
if (g_value_get_enum (value) == GTK_PACK_START)
{
g_object_ref (child);
gtk_container_remove (GTK_CONTAINER (priv->end_box), child);
gtk_container_add (GTK_CONTAINER (priv->start_box), child);
g_object_unref (child);
}
}
else
{
/* Ignore the center widget */
}
break;
case CHILD_PROP_POSITION:
if (gtk_widget_get_parent (child) == priv->start_box)
{
gtk_container_child_set (GTK_CONTAINER (priv->start_box),
child,
"position", g_value_get_int (value),
NULL);
}
else if (gtk_widget_get_parent (child) == priv->end_box)
{
gtk_container_child_set (GTK_CONTAINER (priv->end_box),
child,
"position", g_value_get_int (value),
NULL);
}
else
{
/* Ignore center widget */
}
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_action_bar_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkActionBar *self = GTK_ACTION_BAR (widget);
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (self);
gtk_widget_snapshot_child (GTK_WIDGET (self), priv->revealer, snapshot);
}
static void
gtk_action_bar_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (widget));
gtk_widget_size_allocate (priv->revealer, allocation, baseline, out_clip);
}
static void
gtk_action_bar_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (GTK_ACTION_BAR (widget));
gtk_widget_measure (priv->revealer,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_action_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkActionBar *action_bar = GTK_ACTION_BAR (object);
switch (prop_id)
{
case PROP_REVEALED:
gtk_action_bar_set_revealed (action_bar, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_action_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkActionBar *action_bar = GTK_ACTION_BAR (object);
switch (prop_id)
{
case PROP_REVEALED:
g_value_set_boolean (value, gtk_action_bar_get_revealed (action_bar));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_action_bar_destroy (GtkWidget *widget)
{
GtkActionBar *self = GTK_ACTION_BAR (widget);
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (self);
gtk_center_box_set_start_widget (GTK_CENTER_BOX (priv->center_box), NULL);
gtk_center_box_set_center_widget (GTK_CENTER_BOX (priv->center_box), NULL);
gtk_center_box_set_end_widget (GTK_CENTER_BOX (priv->center_box), NULL);
priv->start_box = NULL;
priv->end_box = NULL;
GTK_WIDGET_CLASS (gtk_action_bar_parent_class)->destroy (widget);
}
static void
gtk_action_bar_class_init (GtkActionBarClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = G_OBJECT_CLASS (klass);
widget_class = GTK_WIDGET_CLASS (klass);
container_class = GTK_CONTAINER_CLASS (klass);
object_class->set_property = gtk_action_bar_set_property;
object_class->get_property = gtk_action_bar_get_property;
object_class->finalize = gtk_action_bar_finalize;
widget_class->snapshot = gtk_action_bar_snapshot;
widget_class->size_allocate = gtk_action_bar_size_allocate;
widget_class->measure = gtk_action_bar_measure_;
widget_class->destroy = gtk_action_bar_destroy;
container_class->add = gtk_action_bar_add;
container_class->remove = gtk_action_bar_remove;
container_class->forall = gtk_action_bar_forall;
container_class->child_type = gtk_action_bar_child_type;
container_class->set_child_property = gtk_action_bar_set_child_property;
container_class->get_child_property = gtk_action_bar_get_child_property;
gtk_container_class_install_child_property (container_class,
CHILD_PROP_PACK_TYPE,
g_param_spec_enum ("pack-type",
P_("Pack type"),
P_("A GtkPackType indicating whether the child is packed with reference to the start or end of the parent"),
GTK_TYPE_PACK_TYPE, GTK_PACK_START,
G_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_POSITION,
g_param_spec_int ("position",
P_("Position"),
P_("The index of the child in the parent"),
-1, G_MAXINT, 0,
G_PARAM_READWRITE));
props[PROP_REVEALED] =
g_param_spec_boolean ("revealed",
P_("Reveal"),
P_("Controls whether the action bar shows its contents or not"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_PROP, props);
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_PANEL);
gtk_widget_class_set_css_name (widget_class, "actionbar");
}
static void
gtk_action_bar_init (GtkActionBar *action_bar)
{
GtkWidget *widget = GTK_WIDGET (action_bar);
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
gtk_widget_set_has_window (widget, FALSE);
priv->revealer = gtk_revealer_new ();
gtk_widget_set_parent (priv->revealer, widget);
gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), TRUE);
gtk_revealer_set_transition_type (GTK_REVEALER (priv->revealer), GTK_REVEALER_TRANSITION_TYPE_SLIDE_UP);
priv->start_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
priv->end_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
priv->center_box = gtk_center_box_new ();
gtk_center_box_set_start_widget (GTK_CENTER_BOX (priv->center_box), priv->start_box);
gtk_center_box_set_end_widget (GTK_CENTER_BOX (priv->center_box), priv->end_box);
gtk_container_add (GTK_CONTAINER (priv->revealer), priv->center_box);
}
static void
gtk_action_bar_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
GtkActionBar *action_bar = GTK_ACTION_BAR (buildable);
if (type && strcmp (type, "center") == 0)
gtk_action_bar_set_center_widget (action_bar, GTK_WIDGET (child));
else if (!type)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (action_bar, type);
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_action_bar_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_action_bar_buildable_add_child;
}
/**
* gtk_action_bar_pack_start:
* @action_bar: A #GtkActionBar
* @child: the #GtkWidget to be added to @action_bar
*
* Adds @child to @action_bar, packed with reference to the
* start of the @action_bar.
*
* Since: 3.12
*/
void
gtk_action_bar_pack_start (GtkActionBar *action_bar,
GtkWidget *child)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
gtk_container_add (GTK_CONTAINER (priv->start_box), child);
}
/**
* gtk_action_bar_pack_end:
* @action_bar: A #GtkActionBar
* @child: the #GtkWidget to be added to @action_bar
*
* Adds @child to @action_bar, packed with reference to the
* end of the @action_bar.
*
* Since: 3.12
*/
void
gtk_action_bar_pack_end (GtkActionBar *action_bar,
GtkWidget *child)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
gtk_box_pack_end (GTK_BOX (priv->end_box), child);
}
/**
* gtk_action_bar_set_center_widget:
* @action_bar: a #GtkActionBar
* @center_widget: (allow-none): a widget to use for the center
*
* Sets the center widget for the #GtkActionBar.
*
* Since: 3.12
*/
void
gtk_action_bar_set_center_widget (GtkActionBar *action_bar,
GtkWidget *center_widget)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
gtk_center_box_set_center_widget (GTK_CENTER_BOX (priv->center_box), center_widget);
}
/**
* gtk_action_bar_get_center_widget:
* @action_bar: a #GtkActionBar
*
* Retrieves the center bar widget of the bar.
*
* Returns: (transfer none) (nullable): the center #GtkWidget or %NULL.
*
* Since: 3.12
*/
GtkWidget *
gtk_action_bar_get_center_widget (GtkActionBar *action_bar)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
g_return_val_if_fail (GTK_IS_ACTION_BAR (action_bar), NULL);
return gtk_center_box_get_center_widget (GTK_CENTER_BOX (priv->center_box));
}
/**
* gtk_action_bar_new:
*
* Creates a new #GtkActionBar widget.
*
* Returns: a new #GtkActionBar
*
* Since: 3.12
*/
GtkWidget *
gtk_action_bar_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_ACTION_BAR, NULL));
}
/**
* gtk_action_bar_set_revealed:
* @action_bar: a #GtkActionBar
* @revealed: The new value of the property
*
* Sets the GtkActionBar:revealed property to @revealed. This will cause
* @action_bar to show up with a slide-in transition.
*
* Note that this settings does not automatically show @action_bar and thus won't
* have any effect if it is invisible.
*
* Since: 3.90
*/
void
gtk_action_bar_set_revealed (GtkActionBar *action_bar,
gboolean revealed)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
g_return_if_fail (GTK_IS_ACTION_BAR (action_bar));
revealed = !!revealed;
if (revealed != gtk_revealer_get_reveal_child (GTK_REVEALER (priv->revealer)))
{
gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), revealed);
g_object_notify_by_pspec (G_OBJECT (action_bar), props[PROP_REVEALED]);
}
}
/**
* gtk_action_bar_get_revealed:
* @action_bar: a #GtkActionBar
*
* Returns: the current value of the GtkActionBar:revealed property.
*
* Since: 3.90
*/
gboolean
gtk_action_bar_get_revealed (GtkActionBar *action_bar)
{
GtkActionBarPrivate *priv = gtk_action_bar_get_instance_private (action_bar);
g_return_val_if_fail (GTK_IS_ACTION_BAR (action_bar), FALSE);
return gtk_revealer_get_reveal_child (GTK_REVEALER (priv->revealer));
}