Quelle gtkcolumnviewcell.c
Sprache: C
/*
* Copyright © 2023 Benjamin Otte
*
* 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 . 1 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 , see < http : //www.gnu.org/licenses/>.
*
* Authors : Benjamin Otte < otte @ gnome . org >
*/
#include "config.h"
#include "gtkcolumnviewcellprivate.h"
#include "gtklistitembaseprivate.h"
/**
* GtkColumnViewCell :
*
* Represents items in a cell in [ class @ Gtk . ColumnView ] .
*
* The ` GtkColumnViewCell ` s are managed by the [ class @ Gtk . ColumnView ]
* widget ( with its factory ) and cannot be created by applications , but
* they need to be populated by application code . This is done by calling
* [ method @ Gtk . ColumnViewCell . set_child ] .
*
* ` GtkColumnViewCell ` s exist in 2 stages :
*
* 1 . The unbound stage where the listitem is not currently connected to
* an item in the list . In that case , the [ property @ Gtk . ColumnViewCell : item ]
* property is set to % NULL .
*
* 2 . The bound stage where the listitem references an item from the list .
* The [ property @ Gtk . ColumnViewCell : item ] property is not % NULL .
*
* Since : 4 . 12
*/
struct _GtkColumnViewCellClass
{
GtkListItemClass parent_class;
};
enum
{
PROP_0,
PROP_CHILD,
PROP_FOCUSABLE,
PROP_ITEM,
PROP_POSITION,
PROP_SELECTED,
N_PROPS
};
G_DEFINE_TYPE (GtkColumnViewCell, gtk_column_view_cell, GTK_TYPE_LIST_ITEM)
static GParamSpec *properties[N_PROPS] = { NULL, };
static void
gtk_column_view_cell_dispose (GObject *object)
{
GtkColumnViewCell *self = GTK_COLUMN_VIEW_CELL (object);
g_assert (self->cell == NULL); /* would hold a reference */
g_clear_object (&self->child);
G_OBJECT_CLASS (gtk_column_view_cell_parent_class)->dispose (object);
}
static void
gtk_column_view_cell_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkColumnViewCell *self = GTK_COLUMN_VIEW_CELL (object);
switch (property_id)
{
case PROP_CHILD:
g_value_set_object (value, self->child);
break ;
case PROP_FOCUSABLE:
g_value_set_boolean (value, self->focusable);
break ;
case PROP_ITEM:
if (self->cell)
g_value_set_object (value, gtk_list_item_base_get_item (GTK_LIST_ITEM_BASE (self->cell)));
break ;
case PROP_POSITION:
if (self->cell)
g_value_set_uint (value, gtk_list_item_base_get_position (GTK_LIST_ITEM_BASE (self->cell)));
else
g_value_set_uint (value, GTK_INVALID_LIST_POSITION);
break ;
case PROP_SELECTED:
if (self->cell)
g_value_set_boolean (value, gtk_list_item_base_get_selected (GTK_LIST_ITEM_BASE (self->cell)));
else
g_value_set_boolean (value, FALSE );
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break ;
}
}
static void
gtk_column_view_cell_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkColumnViewCell *self = GTK_COLUMN_VIEW_CELL (object);
switch (property_id)
{
case PROP_CHILD:
gtk_column_view_cell_set_child (self, g_value_get_object (value));
break ;
case PROP_FOCUSABLE:
gtk_column_view_cell_set_focusable (self, g_value_get_boolean (value));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break ;
}
}
static void
gtk_column_view_cell_class_init (GtkColumnViewCellClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose = gtk_column_view_cell_dispose;
gobject_class->get_property = gtk_column_view_cell_get_property;
gobject_class->set_property = gtk_column_view_cell_set_property;
/**
* GtkColumnViewCell : child :
*
* Widget used for display .
*
* Since : 4 . 12
*/
properties[PROP_CHILD] =
g_param_spec_object ("child" , NULL, NULL,
GTK_TYPE_WIDGET,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_NAME);
/**
* GtkColumnViewCell : focusable :
*
* If the item can be focused with the keyboard .
*
* Since : 4 . 12
*/
properties[PROP_FOCUSABLE] =
g_param_spec_boolean ("focusable" , NULL, NULL,
FALSE ,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_NAME);
/**
* GtkColumnViewCell : item :
*
* Displayed item .
*
* Since : 4 . 12
*/
properties[PROP_ITEM] =
g_param_spec_object ("item" , NULL, NULL,
G_TYPE_OBJECT,
G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_NAME);
/**
* GtkColumnViewCell : position :
*
* Position of the item .
*
* Since : 4 . 12
*/
properties[PROP_POSITION] =
g_param_spec_uint ("position" , NULL, NULL,
0 , G_MAXUINT, GTK_INVALID_LIST_POSITION,
G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_NAME);
/**
* GtkColumnViewCell : selected :
*
* If the item is currently selected .
*
* Since : 4 . 12
*/
properties[PROP_SELECTED] =
g_param_spec_boolean ("selected" , NULL, NULL,
FALSE ,
G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_NAME);
g_object_class_install_properties (gobject_class, N_PROPS, properties);
}
static void
gtk_column_view_cell_init (GtkColumnViewCell *self)
{
self->focusable = FALSE ;
}
GtkColumnViewCell *
gtk_column_view_cell_new (void )
{
return g_object_new (GTK_TYPE_COLUMN_VIEW_CELL, NULL);
}
void
gtk_column_view_cell_do_notify (GtkColumnViewCell *column_view_cell,
gboolean notify_item,
gboolean notify_position,
gboolean notify_selected)
{
GObject *object = G_OBJECT (column_view_cell);
if (notify_item)
g_object_notify_by_pspec (object, properties[PROP_ITEM]);
if (notify_position)
g_object_notify_by_pspec (object, properties[PROP_POSITION]);
if (notify_selected)
g_object_notify_by_pspec (object, properties[PROP_SELECTED]);
}
/**
* gtk_column_view_cell_get_item :
* @ self : a ` GtkColumnViewCell `
*
* Gets the model item that associated with @ self .
*
* If @ self is unbound , this function returns % NULL .
*
* Returns : ( nullable ) ( transfer none ) ( type GObject ) : The item displayed
*
* Since : 4 . 12
**/
gpointer
gtk_column_view_cell_get_item (GtkColumnViewCell *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW_CELL (self), NULL);
if (self->cell == NULL)
return NULL;
return gtk_list_item_base_get_item (GTK_LIST_ITEM_BASE (self->cell));
}
/**
* gtk_column_view_cell_get_child :
* @ self : a ` GtkColumnViewCell `
*
* Gets the child previously set via gtk_column_view_cell_set_child ( ) or
* % NULL if none was set .
*
* Returns : ( transfer none ) ( nullable ) : The child
*
* Since : 4 . 12
*/
GtkWidget *
gtk_column_view_cell_get_child (GtkColumnViewCell *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW_CELL (self), NULL);
return self->child;
}
/**
* gtk_column_view_cell_set_child :
* @ self : a ` GtkColumnViewCell `
* @ child : ( nullable ) : The list item ' s child or % NULL to unset
*
* Sets the child to be used for this listitem .
*
* This function is typically called by applications when
* setting up a listitem so that the widget can be reused when
* binding it multiple times .
*
* Since : 4 . 12
*/
void
gtk_column_view_cell_set_child (GtkColumnViewCell *self,
GtkWidget *child)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW_CELL (self));
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
if (self->child == child)
return ;
g_clear_object (&self->child);
if (child)
{
g_object_ref_sink (child);
self->child = child;
}
if (self->cell)
gtk_column_view_cell_widget_set_child (self->cell, child);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CHILD]);
}
/**
* gtk_column_view_cell_get_position :
* @ self : a ` GtkColumnViewCell `
*
* Gets the position in the model that @ self currently displays .
*
* If @ self is unbound , % GTK_INVALID_LIST_POSITION is returned .
*
* Returns : The position of this item
*
* Since : 4 . 12
*/
guint
gtk_column_view_cell_get_position (GtkColumnViewCell *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW_CELL (self), GTK_INVALID_LIST_POSITION);
if (self->cell == NULL)
return GTK_INVALID_LIST_POSITION;
return gtk_list_item_base_get_position (GTK_LIST_ITEM_BASE (self->cell));
}
/**
* gtk_column_view_cell_get_selected :
* @ self : a ` GtkColumnViewCell `
*
* Checks if the item is displayed as selected .
*
* The selected state is maintained by the list widget and its model
* and cannot be set otherwise .
*
* Returns : % TRUE if the item is selected .
*
* Since : 4 . 12
*/
gboolean
gtk_column_view_cell_get_selected (GtkColumnViewCell *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW_CELL (self), FALSE );
if (self->cell == NULL)
return FALSE ;
return gtk_list_item_base_get_selected (GTK_LIST_ITEM_BASE (self->cell));
}
/**
* gtk_column_view_cell_get_focusable :
* @ self : a ` GtkColumnViewCell `
*
* Checks if a list item has been set to be focusable via
* gtk_column_view_cell_set_focusable ( ) .
*
* Returns : % TRUE if the item is focusable
*
* Since : 4 . 12
*/
gboolean
gtk_column_view_cell_get_focusable (GtkColumnViewCell *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW_CELL (self), FALSE );
return self->focusable;
}
/**
* gtk_column_view_cell_set_focusable :
* @ self : a ` GtkColumnViewCell `
* @ focusable : if the item should be focusable
*
* Sets @ self to be focusable .
*
* If an item is focusable , it can be focused using the keyboard .
* This works similar to [ method @ Gtk . Widget . set_focusable ] .
*
* Note that if items are not focusable , the keyboard cannot be used to activate
* them and selecting only works if one of the listitem ' s children is focusable .
*
* By default , list items are focusable .
*
* Since : 4 . 12
*/
void
gtk_column_view_cell_set_focusable (GtkColumnViewCell *self,
gboolean focusable)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW_CELL (self));
if (self->focusable == focusable)
return ;
self->focusable = focusable;
if (self->cell)
gtk_widget_set_focusable (GTK_WIDGET (self->cell), focusable);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FOCUSABLE]);
}
Messung V0.5 in Prozent C=98 H=96 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-07-02)
¤
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2026-07-09