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gtk2/gtk/gtkcombobox.c
Matthias Clasen 6ad1c89964 Add a destroy implementation in order to set priv->cell_view to NULL 
Tue Feb 24 01:08:27 2004  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkcombobox.c: Add a destroy implementation in order to
	set priv->cell_view to NULL before finalize stumbles over the
	dangling pointer. This big array of pointers into the widget
	tree in GtkComboBoxPrivate is really fragile and should be
	cleaned up.
2004-02-24 00:07:15 +00:00

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/* gtkcombobox.c
* Copyright (C) 2002, 2003 Kristian Rietveld <kris@gtk.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include "gtkcombobox.h"
#include "gtkcelllayout.h"
#include "gtkcellview.h"
#include "gtkcellviewmenuitem.h"
#include "gtktreeselection.h"
#include "gtkframe.h"
#include "gtktogglebutton.h"
#include "gtkvseparator.h"
#include "gtkarrow.h"
#include "gtkmenu.h"
#include "gtkmain.h"
#include "gtkeventbox.h"
#include "gtkcellrenderertext.h"
#include "gtkbindings.h"
#include "gtkliststore.h"
#include "gtkwindow.h"
#include <gdk/gdkkeysyms.h>
#include <gobject/gvaluecollector.h>
#include <string.h>
#include <stdarg.h>
#include "gtkmarshalers.h"
#include "gtkintl.h"
/* WELCOME, to THE house of evil code */
typedef struct _ComboCellInfo ComboCellInfo;
struct _ComboCellInfo
{
GtkCellRenderer *cell;
GSList *attributes;
GtkCellLayoutDataFunc func;
gpointer func_data;
GDestroyNotify destroy;
guint expand : 1;
guint pack : 1;
};
#define GTK_COMBO_BOX_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_COMBO_BOX, GtkComboBoxPrivate))
struct _GtkComboBoxPrivate
{
GtkTreeModel *model;
gint col_column;
gint row_column;
gint wrap_width;
gint active_item;
GtkWidget *tree_view;
GtkTreeViewColumn *column;
GtkWidget *cell_view;
GtkWidget *hbox;
GtkWidget *cell_view_frame;
GtkWidget *button;
GtkWidget *arrow;
GtkWidget *separator;
GtkWidget *popup_widget;
GtkWidget *popup_window;
GtkWidget *popup_frame;
guint inserted_id;
guint deleted_id;
gint width;
GSList *cells;
guint changed_id;
guint popup_in_progress : 1;
};
enum {
CHANGED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_MODEL,
PROP_WRAP_WIDTH,
PROP_ROW_SPAN_COLUMN,
PROP_COLUMN_SPAN_COLUMN,
PROP_ACTIVE
};
static GtkBinClass *parent_class = NULL;
static guint combo_box_signals[LAST_SIGNAL] = {0,};
#define BONUS_PADDING 4
/* common */
static void gtk_combo_box_class_init (GtkComboBoxClass *klass);
static void gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_combo_box_init (GtkComboBox *combo_box);
static void gtk_combo_box_finalize (GObject *object);
static void gtk_combo_box_destroy (GtkObject *object);
static void gtk_combo_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *spec);
static void gtk_combo_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *spec);
static void gtk_combo_box_style_set (GtkWidget *widget,
GtkStyle *previous_style,
gpointer data);
static void gtk_combo_box_button_toggled (GtkWidget *widget,
gpointer data);
static void gtk_combo_box_add (GtkContainer *container,
GtkWidget *widget);
static ComboCellInfo *gtk_combo_box_get_cell_info (GtkComboBox *combo_box,
GtkCellRenderer *cell);
static void gtk_combo_box_menu_show (GtkWidget *menu,
gpointer user_data);
static void gtk_combo_box_menu_hide (GtkWidget *menu,
gpointer user_data);
static void gtk_combo_box_set_popup_widget (GtkComboBox *combo_box,
GtkWidget *popup);
static void gtk_combo_box_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gint *push_in,
gpointer user_data);
static gint gtk_combo_box_calc_requested_width (GtkComboBox *combo_box,
GtkTreePath *path);
static void gtk_combo_box_remeasure (GtkComboBox *combo_box);
static void gtk_combo_box_unset_model (GtkComboBox *combo_box);
static void gtk_combo_box_set_model_internal (GtkComboBox *combo_box);
static void gtk_combo_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_combo_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_combo_box_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static gboolean gtk_combo_box_expose_event (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_combo_box_scroll_event (GtkWidget *widget,
GdkEventScroll *event);
/* list */
static void gtk_combo_box_list_setup (GtkComboBox *combo_box);
static void gtk_combo_box_list_destroy (GtkComboBox *combo_box);
static gboolean gtk_combo_box_list_button_released (GtkWidget *widget,
GdkEventButton *event,
gpointer data);
static gboolean gtk_combo_box_list_key_press (GtkWidget *widget,
GdkEventKey *event,
gpointer data);
static gboolean gtk_combo_box_list_button_pressed (GtkWidget *widget,
GdkEventButton *event,
gpointer data);
static void gtk_combo_box_list_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
/* menu */
static void gtk_combo_box_menu_setup (GtkComboBox *combo_box,
gboolean add_childs);
static void gtk_combo_box_menu_fill (GtkComboBox *combo_box);
static void gtk_combo_box_menu_destroy (GtkComboBox *combo_box);
static void gtk_combo_box_item_get_size (GtkComboBox *combo_box,
gint index,
gint *cols,
gint *rows);
static void gtk_combo_box_relayout_item (GtkComboBox *combo_box,
gint index);
static void gtk_combo_box_relayout (GtkComboBox *combo_box);
static gboolean gtk_combo_box_menu_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static void gtk_combo_box_menu_item_activate (GtkWidget *item,
gpointer user_data);
static void gtk_combo_box_menu_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data);
static void gtk_combo_box_menu_row_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer user_data);
static void gtk_combo_box_menu_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
/* cell layout */
static void gtk_combo_box_cell_layout_pack_start (GtkCellLayout *layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_combo_box_cell_layout_pack_end (GtkCellLayout *layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_combo_box_cell_layout_clear (GtkCellLayout *layout);
static void gtk_combo_box_cell_layout_add_attribute (GtkCellLayout *layout,
GtkCellRenderer *cell,
const gchar *attribute,
gint column);
static void gtk_combo_box_cell_layout_set_cell_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy);
static void gtk_combo_box_cell_layout_clear_attributes (GtkCellLayout *layout,
GtkCellRenderer *cell);
static void gtk_combo_box_cell_layout_reorder (GtkCellLayout *layout,
GtkCellRenderer *cell,
gint position);
static gboolean gtk_combo_box_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
GType
gtk_combo_box_get_type (void)
{
static GType combo_box_type = 0;
if (!combo_box_type)
{
static const GTypeInfo combo_box_info =
{
sizeof (GtkComboBoxClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_combo_box_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkComboBox),
0,
(GInstanceInitFunc) gtk_combo_box_init
};
static const GInterfaceInfo cell_layout_info =
{
(GInterfaceInitFunc) gtk_combo_box_cell_layout_init,
NULL,
NULL
};
combo_box_type = g_type_register_static (GTK_TYPE_BIN,
"GtkComboBox",
&combo_box_info,
0);
g_type_add_interface_static (combo_box_type,
GTK_TYPE_CELL_LAYOUT,
&cell_layout_info);
}
return combo_box_type;
}
/* common */
static void
gtk_combo_box_class_init (GtkComboBoxClass *klass)
{
GObjectClass *object_class;
GtkBindingSet *binding_set;
GtkObjectClass *gtk_object_class;
GtkContainerClass *container_class;
GtkWidgetClass *widget_class;
binding_set = gtk_binding_set_by_class (klass);
container_class = (GtkContainerClass *)klass;
container_class->forall = gtk_combo_box_forall;
container_class->add = gtk_combo_box_add;
widget_class = (GtkWidgetClass *)klass;
widget_class->size_allocate = gtk_combo_box_size_allocate;
widget_class->size_request = gtk_combo_box_size_request;
widget_class->expose_event = gtk_combo_box_expose_event;
widget_class->scroll_event = gtk_combo_box_scroll_event;
widget_class->mnemonic_activate = gtk_combo_box_mnemonic_activate;
gtk_object_class = (GtkObjectClass *)klass;
gtk_object_class->destroy = gtk_combo_box_destroy;
object_class = (GObjectClass *)klass;
object_class->finalize = gtk_combo_box_finalize;
object_class->set_property = gtk_combo_box_set_property;
object_class->get_property = gtk_combo_box_get_property;
parent_class = g_type_class_peek_parent (klass);
/* signals */
combo_box_signals[CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkComboBoxClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/* properties */
g_object_class_install_property (object_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("ComboBox model"),
P_("The model for the combo box"),
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_WRAP_WIDTH,
g_param_spec_int ("wrap_width",
P_("Wrap width"),
P_("Wrap width for layouting the items in a grid"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_ROW_SPAN_COLUMN,
g_param_spec_int ("row_span_column",
P_("Row span column"),
P_("TreeModel column containing the row span values"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_COLUMN_SPAN_COLUMN,
g_param_spec_int ("column_span_column",
P_("Column span column"),
P_("TreeModel column containing the column span values"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_ACTIVE,
g_param_spec_int ("active",
P_("Active item"),
P_("The item which is currently active"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("appearance",
P_("ComboBox appareance"),
P_("ComboBox appearance, where TRUE means Windows-style."),
FALSE,
G_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkComboBoxPrivate));
}
static void
gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->pack_start = gtk_combo_box_cell_layout_pack_start;
iface->pack_end = gtk_combo_box_cell_layout_pack_end;
iface->clear = gtk_combo_box_cell_layout_clear;
iface->add_attribute = gtk_combo_box_cell_layout_add_attribute;
iface->set_cell_data_func = gtk_combo_box_cell_layout_set_cell_data_func;
iface->clear_attributes = gtk_combo_box_cell_layout_clear_attributes;
iface->reorder = gtk_combo_box_cell_layout_reorder;
}
static void
gtk_combo_box_init (GtkComboBox *combo_box)
{
combo_box->priv = GTK_COMBO_BOX_GET_PRIVATE (combo_box);
g_signal_connect (combo_box, "style_set",
G_CALLBACK (gtk_combo_box_style_set), NULL);
combo_box->priv->cell_view = gtk_cell_view_new ();
gtk_container_add (GTK_CONTAINER (combo_box), combo_box->priv->cell_view);
gtk_widget_show (combo_box->priv->cell_view);
combo_box->priv->width = 0;
combo_box->priv->wrap_width = 0;
combo_box->priv->active_item = -1;
combo_box->priv->col_column = -1;
combo_box->priv->row_column = -1;
}
static void
gtk_combo_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
switch (prop_id)
{
case PROP_MODEL:
gtk_combo_box_set_model (combo_box, g_value_get_object (value));
break;
case PROP_WRAP_WIDTH:
gtk_combo_box_set_wrap_width (combo_box, g_value_get_int (value));
break;
case PROP_ROW_SPAN_COLUMN:
gtk_combo_box_set_row_span_column (combo_box, g_value_get_int (value));
break;
case PROP_COLUMN_SPAN_COLUMN:
gtk_combo_box_set_column_span_column (combo_box, g_value_get_int (value));
break;
case PROP_ACTIVE:
gtk_combo_box_set_active (combo_box, g_value_get_int (value));
break;
default:
break;
}
}
static void
gtk_combo_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, combo_box->priv->model);
break;
case PROP_WRAP_WIDTH:
g_value_set_int (value, combo_box->priv->wrap_width);
break;
case PROP_ROW_SPAN_COLUMN:
g_value_set_int (value, combo_box->priv->row_column);
break;
case PROP_COLUMN_SPAN_COLUMN:
g_value_set_int (value, combo_box->priv->col_column);
break;
case PROP_ACTIVE:
g_value_set_int (value, gtk_combo_box_get_active (combo_box));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_combo_box_style_set (GtkWidget *widget,
GtkStyle *previous_style,
gpointer data)
{
gboolean appearance;
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
gtk_widget_queue_resize (widget);
/* if wrap_width > 0, then we are in grid-mode and forced to use
* unix style
*/
if (combo_box->priv->wrap_width)
return;
gtk_widget_style_get (widget,
"appearance", &appearance,
NULL);
/* TRUE is windows style */
if (appearance)
{
if (GTK_IS_MENU (combo_box->priv->popup_widget))
gtk_combo_box_menu_destroy (combo_box);
gtk_combo_box_list_setup (combo_box);
}
else
{
if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view))
gtk_combo_box_list_destroy (combo_box);
gtk_combo_box_menu_setup (combo_box, TRUE);
}
}
static void
gtk_combo_box_button_toggled (GtkWidget *widget,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
if (!combo_box->priv->popup_in_progress)
gtk_combo_box_popup (combo_box);
}
else
gtk_combo_box_popdown (combo_box);
}
static void
gtk_combo_box_add (GtkContainer *container,
GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
if (combo_box->priv->cell_view && combo_box->priv->cell_view->parent)
{
gtk_container_remove (container, combo_box->priv->cell_view);
(* GTK_CONTAINER_CLASS (parent_class)->add) (container, widget);
}
else
{
(* GTK_CONTAINER_CLASS (parent_class)->add) (container, widget);
}
if (combo_box->priv->cell_view &&
widget != combo_box->priv->cell_view)
{
/* since the cell_view was unparented, it's gone now */
combo_box->priv->cell_view = NULL;
if (!combo_box->priv->tree_view && combo_box->priv->separator)
{
gtk_widget_unparent (combo_box->priv->separator);
g_object_ref (G_OBJECT (combo_box->priv->arrow));
gtk_widget_unparent (combo_box->priv->arrow);
gtk_container_add (GTK_CONTAINER (combo_box->priv->button),
combo_box->priv->arrow);
g_object_unref (G_OBJECT (combo_box->priv->arrow));
gtk_widget_queue_resize (GTK_WIDGET (container));
}
else if (combo_box->priv->cell_view_frame)
{
gtk_widget_unparent (combo_box->priv->cell_view_frame);
combo_box->priv->cell_view_frame = NULL;
}
}
}
static ComboCellInfo *
gtk_combo_box_get_cell_info (GtkComboBox *combo_box,
GtkCellRenderer *cell)
{
GSList *i;
for (i = combo_box->priv->cells; i; i = i->next)
{
ComboCellInfo *info = (ComboCellInfo *)i->data;
if (info->cell == cell)
return info;
}
return NULL;
}
static void
gtk_combo_box_menu_show (GtkWidget *menu,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
TRUE);
combo_box->priv->popup_in_progress = FALSE;
}
static void
gtk_combo_box_menu_hide (GtkWidget *menu,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
FALSE);
}
static void
gtk_combo_box_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkComboBox *combo_box;
g_return_if_fail (GTK_IS_COMBO_BOX (widget));
combo_box = GTK_COMBO_BOX (widget);
g_return_if_fail (combo_box->priv->popup_widget == (GtkWidget*) menu);
g_signal_handlers_disconnect_by_func (menu,
gtk_combo_box_menu_show,
combo_box);
g_signal_handlers_disconnect_by_func (menu,
gtk_combo_box_menu_hide,
combo_box);
combo_box->priv->popup_widget = NULL;
}
static void
gtk_combo_box_set_popup_widget (GtkComboBox *combo_box,
GtkWidget *popup)
{
if (GTK_IS_MENU (combo_box->priv->popup_widget))
{
gtk_menu_detach (GTK_MENU (combo_box->priv->popup_widget));
combo_box->priv->popup_widget = NULL;
}
else if (combo_box->priv->popup_widget)
{
gtk_container_remove (GTK_CONTAINER (combo_box->priv->popup_frame),
combo_box->priv->popup_widget);
g_object_unref (G_OBJECT (combo_box->priv->popup_widget));
combo_box->priv->popup_widget = NULL;
}
if (GTK_IS_MENU (popup))
{
if (combo_box->priv->popup_window)
{
gtk_widget_destroy (combo_box->priv->popup_window);
combo_box->priv->popup_window = combo_box->priv->popup_frame = NULL;
}
combo_box->priv->popup_widget = popup;
g_signal_connect (popup, "show",
G_CALLBACK (gtk_combo_box_menu_show), combo_box);
g_signal_connect (popup, "hide",
G_CALLBACK (gtk_combo_box_menu_hide), combo_box);
gtk_menu_attach_to_widget (GTK_MENU (popup),
GTK_WIDGET (combo_box),
gtk_combo_box_detacher);
}
else
{
if (!combo_box->priv->popup_window)
{
combo_box->priv->popup_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (GTK_WINDOW (combo_box->priv->popup_window),
gtk_widget_get_screen (GTK_WIDGET (combo_box)));
combo_box->priv->popup_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (combo_box->priv->popup_frame),
GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (combo_box->priv->popup_window),
combo_box->priv->popup_frame);
gtk_widget_show (combo_box->priv->popup_frame);
}
gtk_container_add (GTK_CONTAINER (combo_box->priv->popup_frame),
popup);
gtk_widget_show (popup);
g_object_ref (G_OBJECT (popup));
combo_box->priv->popup_widget = popup;
}
}
static void
gtk_combo_box_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gint *push_in,
gpointer user_data)
{
gint sx, sy;
GtkWidget *child;
GtkRequisition req;
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
/* FIXME: is using the size request here broken? */
child = GTK_BIN (combo_box)->child;
gdk_window_get_origin (child->window, &sx, &sy);
gtk_widget_size_request (GTK_WIDGET (menu), &req);
if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_RTL)
*x = sx;
else
*x = sx + child->allocation.width - req.width;
*y = sy + child->allocation.height;
if (GTK_WIDGET_NO_WINDOW (child))
{
*x += child->allocation.x;
*y += child->allocation.y;
}
*push_in = TRUE;
}
/**
* gtk_combo_box_popup:
* @combo_box: a #GtkComboBox
*
* Pops up the menu or dropdown list of @combo_box.
*
* This function is mostly intended for use by accessibility technologies;
* applications should have little use for it.
*
* Since: 2.4
**/
void
gtk_combo_box_popup (GtkComboBox *combo_box)
{
gint x, y, width, height;
GtkWidget *sample;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (GTK_WIDGET_MAPPED (combo_box->priv->popup_widget))
return;
if (GTK_IS_MENU (combo_box->priv->popup_widget))
{
if (combo_box->priv->active_item != -1)
{
GList *childs;
childs = gtk_container_get_children (GTK_CONTAINER (combo_box->priv->popup_widget));
gtk_menu_shell_select_item (GTK_MENU_SHELL (combo_box->priv->popup_widget),
g_list_nth_data (childs, combo_box->priv->active_item));
g_list_free (childs);
}
gtk_menu_popup (GTK_MENU (combo_box->priv->popup_widget),
NULL, NULL,
gtk_combo_box_menu_position, combo_box,
0, 0);
return;
}
/* size it */
sample = GTK_BIN (combo_box)->child;
width = sample->allocation.width;
height = sample->allocation.height;
gdk_window_get_origin (sample->window,
&x, &y);
if (combo_box->priv->cell_view_frame)
{
x -= GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->xthickness;
width += 2 * (GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->xthickness);
}
gtk_widget_set_size_request (combo_box->priv->popup_window,
width, -1);
if (GTK_WIDGET_NO_WINDOW (sample))
{
x += sample->allocation.x;
y += sample->allocation.y;
}
gtk_window_move (GTK_WINDOW (combo_box->priv->popup_window),
x, y + height);
/* popup */
gtk_widget_show_all (combo_box->priv->popup_window);
gtk_widget_grab_focus (combo_box->priv->popup_window);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
TRUE);
if (!GTK_WIDGET_HAS_FOCUS (combo_box->priv->tree_view))
{
gdk_keyboard_grab (combo_box->priv->popup_window->window,
FALSE, GDK_CURRENT_TIME);
gtk_widget_grab_focus (combo_box->priv->tree_view);
}
}
/**
* gtk_combo_box_popdown:
* @combo_box: a #GtkComboBox
*
* Hides the menu or dropdown list of @combo_box.
*
* This function is mostly intended for use by accessibility technologies;
* applications should have little use for it.
*
* Since: 2.4
**/
void
gtk_combo_box_popdown (GtkComboBox *combo_box)
{
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (GTK_IS_MENU (combo_box->priv->popup_widget))
{
gtk_menu_popdown (GTK_MENU (combo_box->priv->popup_widget));
return;
}
gtk_widget_hide_all (combo_box->priv->popup_window);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
FALSE);
}
static gint
gtk_combo_box_calc_requested_width (GtkComboBox *combo_box,
GtkTreePath *path)
{
gint padding;
GtkRequisition req;
if (combo_box->priv->cell_view)
gtk_widget_style_get (combo_box->priv->cell_view,
"focus-line-width", &padding,
NULL);
else
padding = 0;
/* add some pixels for good measure */
padding += BONUS_PADDING;
if (combo_box->priv->cell_view)
gtk_cell_view_get_size_of_row (GTK_CELL_VIEW (combo_box->priv->cell_view),
path, &req);
else
req.width = 0;
return req.width + padding;
}
static void
gtk_combo_box_remeasure (GtkComboBox *combo_box)
{
GtkTreeIter iter;
GtkTreePath *path;
gint padding = 0;
if (!gtk_tree_model_get_iter_first (combo_box->priv->model, &iter))
return;
combo_box->priv->width = 0;
path = gtk_tree_path_new_from_indices (0, -1);
if (combo_box->priv->cell_view)
gtk_widget_style_get (combo_box->priv->cell_view,
"focus-line-width", &padding,
NULL);
else
padding = 0;
/* add some pixels for good measure */
padding += BONUS_PADDING;
do
{
GtkRequisition req;
if (combo_box->priv->cell_view)
gtk_cell_view_get_size_of_row (GTK_CELL_VIEW (combo_box->priv->cell_view),
path, &req);
else
req.width = 0;
combo_box->priv->width = MAX (combo_box->priv->width,
req.width + padding);
gtk_tree_path_next (path);
}
while (gtk_tree_model_iter_next (combo_box->priv->model, &iter));
gtk_tree_path_free (path);
}
static void
gtk_combo_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
gint width, height;
GtkRequisition bin_req;
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
/* common */
gtk_widget_size_request (GTK_BIN (widget)->child, &bin_req);
gtk_combo_box_remeasure (combo_box);
bin_req.width = MAX (bin_req.width, combo_box->priv->width);
if (!combo_box->priv->tree_view)
{
/* menu mode */
if (combo_box->priv->cell_view)
{
GtkRequisition sep_req, arrow_req;
gint border_width, xthickness, ythickness;
border_width = GTK_CONTAINER (combo_box->priv->button)->border_width;
xthickness = combo_box->priv->button->style->xthickness;
ythickness = combo_box->priv->button->style->ythickness;
bin_req.width = MAX (bin_req.width, combo_box->priv->width);
gtk_widget_size_request (combo_box->priv->separator, &sep_req);
gtk_widget_size_request (combo_box->priv->arrow, &arrow_req);
height = MAX (sep_req.height, arrow_req.height);
height = MAX (height, bin_req.height);
width = bin_req.width + sep_req.width + arrow_req.width;
height += border_width + 1 + xthickness * 2 + 4;
width += border_width + 1 + ythickness * 2 + 4;
requisition->width = width;
requisition->height = height;
}
else
{
GtkRequisition but_req;
gtk_widget_size_request (combo_box->priv->button, &but_req);
requisition->width = bin_req.width + but_req.width;
requisition->height = MAX (bin_req.height, but_req.height);
}
}
else
{
/* list mode */
GtkRequisition button_req;
/* sample + frame */
*requisition = bin_req;
if (combo_box->priv->cell_view_frame)
{
requisition->width += 2 *
(GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->xthickness);
requisition->height += 2 *
(GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->ythickness);
}
/* the button */
gtk_widget_size_request (combo_box->priv->button, &button_req);
requisition->height = MAX (requisition->height, button_req.height);
requisition->width += button_req.width;
}
}
static void
gtk_combo_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkAllocation child;
GtkRequisition req;
gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
widget->allocation = *allocation;
if (!combo_box->priv->tree_view)
{
if (combo_box->priv->cell_view)
{
gint border_width, xthickness, ythickness;
gint width;
/* menu mode */
gtk_widget_size_allocate (combo_box->priv->button, allocation);
/* set some things ready */
border_width = GTK_CONTAINER (combo_box->priv->button)->border_width;
xthickness = combo_box->priv->button->style->xthickness;
ythickness = combo_box->priv->button->style->ythickness;
child.x = allocation->x + border_width + 1 + xthickness + 2;
child.y = allocation->y + border_width + 1 + ythickness + 2;
width = allocation->width - (border_width + 1 + xthickness * 2 + 4);
/* handle the childs */
gtk_widget_size_request (combo_box->priv->arrow, &req);
child.width = req.width;
child.height = allocation->height - 2 * (child.y - allocation->y);
if (!is_rtl)
child.x += width - req.width;
gtk_widget_size_allocate (combo_box->priv->arrow, &child);
if (is_rtl)
child.x += req.width;
gtk_widget_size_request (combo_box->priv->separator, &req);
child.width = req.width;
if (!is_rtl)
child.x -= req.width;
gtk_widget_size_allocate (combo_box->priv->separator, &child);
if (is_rtl)
{
child.x += req.width;
child.width = allocation->x + allocation->width
- (border_width + 1 + xthickness + 2) - child.x;
}
else
{
child.width = child.x;
child.x = allocation->x + border_width + 1 + xthickness + 2;
child.width -= child.x;
}
gtk_widget_size_allocate (GTK_BIN (widget)->child, &child);
}
else
{
gtk_widget_size_request (combo_box->priv->button, &req);
if (is_rtl)
child.x = allocation->x;
else
child.x = allocation->x + allocation->width - req.width;
child.y = allocation->y;
child.width = req.width;
child.height = allocation->height;
gtk_widget_size_allocate (combo_box->priv->button, &child);
if (is_rtl)
child.x = allocation->x + req.width;
else
child.x = allocation->x;
child.y = allocation->y;
child.width = allocation->width - req.width;
gtk_widget_size_allocate (GTK_BIN (widget)->child, &child);
}
}
else
{
/* list mode */
/* button */
gtk_widget_size_request (combo_box->priv->button, &req);
if (is_rtl)
child.x = allocation->x;
else
child.x = allocation->x + allocation->width - req.width;
child.y = allocation->y;
child.width = req.width;
child.height = allocation->height;
gtk_widget_size_allocate (combo_box->priv->button, &child);
/* frame */
if (is_rtl)
child.x = allocation->x + req.width;
else
child.x = allocation->x;
child.y = allocation->y;
child.width = allocation->width - req.width;
child.height = allocation->height;
if (combo_box->priv->cell_view_frame)
{
gtk_widget_size_allocate (combo_box->priv->cell_view_frame, &child);
/* the sample */
child.x +=
GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->xthickness;
child.y +=
GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->ythickness;
child.width -= 2 * (
GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->xthickness);
child.height -= 2 * (
GTK_CONTAINER (combo_box->priv->cell_view_frame)->border_width +
GTK_WIDGET (combo_box->priv->cell_view_frame)->style->ythickness);
}
gtk_widget_size_allocate (GTK_BIN (combo_box)->child, &child);
}
}
static void
gtk_combo_box_unset_model (GtkComboBox *combo_box)
{
if (!combo_box->priv->tree_view)
{
/* menu mode */
g_signal_handler_disconnect (combo_box->priv->model,
combo_box->priv->inserted_id);
g_signal_handler_disconnect (combo_box->priv->model,
combo_box->priv->deleted_id);
g_signal_handler_disconnect (combo_box->priv->model,
combo_box->priv->changed_id);
combo_box->priv->inserted_id =
combo_box->priv->deleted_id =
combo_box->priv->changed_id = -1;
if (combo_box->priv->popup_widget)
gtk_container_foreach (GTK_CONTAINER (combo_box->priv->popup_widget),
(GtkCallback)gtk_widget_destroy, NULL);
}
else
{
/* list mode */
g_signal_handler_disconnect (combo_box->priv->model,
combo_box->priv->changed_id);
combo_box->priv->changed_id = -1;
}
}
static void
gtk_combo_box_set_model_internal (GtkComboBox *combo_box)
{
if (!combo_box->priv->tree_view)
{
/* menu mode */
combo_box->priv->inserted_id =
g_signal_connect (combo_box->priv->model, "row_inserted",
G_CALLBACK (gtk_combo_box_menu_row_inserted),
combo_box);
combo_box->priv->deleted_id =
g_signal_connect (combo_box->priv->model, "row_deleted",
G_CALLBACK (gtk_combo_box_menu_row_deleted),
combo_box);
combo_box->priv->changed_id =
g_signal_connect (combo_box->priv->model, "row_changed",
G_CALLBACK (gtk_combo_box_menu_row_changed),
combo_box);
}
else
{
/* list mode */
gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view),
combo_box->priv->model);
combo_box->priv->changed_id =
g_signal_connect (combo_box->priv->model, "row_changed",
G_CALLBACK (gtk_combo_box_list_row_changed),
combo_box);
}
}
static void
gtk_combo_box_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
if (include_internals)
{
if (!combo_box->priv->tree_view)
{
if (combo_box->priv->cell_view && combo_box->priv->button)
{
(* callback) (combo_box->priv->button, callback_data);
(* callback) (combo_box->priv->separator, callback_data);
(* callback) (combo_box->priv->arrow, callback_data);
}
else if (combo_box->priv->arrow)
{
(* callback) (combo_box->priv->button, callback_data);
(* callback) (combo_box->priv->arrow, callback_data);
}
}
else
{
(* callback) (combo_box->priv->button, callback_data);
if (combo_box->priv->cell_view_frame)
(* callback) (combo_box->priv->cell_view_frame, callback_data);
}
}
if (GTK_BIN (container)->child)
(* callback) (GTK_BIN (container)->child, callback_data);
}
static gboolean
gtk_combo_box_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
if (!combo_box->priv->tree_view)
{
gtk_container_propagate_expose (GTK_CONTAINER (widget),
combo_box->priv->button, event);
if (combo_box->priv->separator)
{
gtk_container_propagate_expose (GTK_CONTAINER (combo_box->priv->button),
combo_box->priv->separator, event);
/* if not in this case, arrow gets its expose event from button */
gtk_container_propagate_expose (GTK_CONTAINER (combo_box->priv->button),
combo_box->priv->arrow, event);
}
}
else
{
gtk_container_propagate_expose (GTK_CONTAINER (widget),
combo_box->priv->button, event);
if (combo_box->priv->cell_view_frame)
gtk_container_propagate_expose (GTK_CONTAINER (widget),
combo_box->priv->cell_view_frame, event);
}
gtk_container_propagate_expose (GTK_CONTAINER (widget),
GTK_BIN (widget)->child, event);
return FALSE;
}
static gboolean
gtk_combo_box_scroll_event (GtkWidget *widget,
GdkEventScroll *event)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
gint index;
gint items;
index = gtk_combo_box_get_active (combo_box);
if (index != -1)
{
items = gtk_tree_model_iter_n_children (combo_box->priv->model, NULL);
if (event->direction == GDK_SCROLL_UP)
index--;
else
index++;
gtk_combo_box_set_active (combo_box, CLAMP (index, 0, items - 1));
}
return TRUE;
}
/*
* menu style
*/
static void
cell_view_sync_cells (GtkComboBox *combo_box,
GtkCellView *cell_view)
{
GSList *k;
for (k = combo_box->priv->cells; k; k = k->next)
{
GSList *j;
ComboCellInfo *info = (ComboCellInfo *)k->data;
if (info->pack == GTK_PACK_START)
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (cell_view),
info->cell, info->expand);
else if (info->pack == GTK_PACK_END)
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (cell_view),
info->cell, info->expand);
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (cell_view),
info->cell,
info->func, info->func_data, NULL);
for (j = info->attributes; j; j = j->next->next)
{
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (cell_view),
info->cell,
j->data,
GPOINTER_TO_INT (j->next->data));
}
}
}
static void
gtk_combo_box_menu_setup (GtkComboBox *combo_box,
gboolean add_childs)
{
GtkWidget *box;
if (combo_box->priv->cell_view)
{
combo_box->priv->button = gtk_toggle_button_new ();
g_signal_connect (combo_box->priv->button, "toggled",
G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
gtk_widget_set_parent (combo_box->priv->button,
GTK_BIN (combo_box)->child->parent);
combo_box->priv->separator = gtk_vseparator_new ();
gtk_widget_set_parent (combo_box->priv->separator,
combo_box->priv->button);
gtk_widget_show (combo_box->priv->separator);
combo_box->priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
gtk_widget_set_parent (combo_box->priv->arrow, combo_box->priv->button);
gtk_widget_show (combo_box->priv->arrow);
gtk_widget_show_all (combo_box->priv->button);
if (GTK_WIDGET_MAPPED (GTK_BIN (combo_box)->child))
{
/* I have no clue why, but we need to manually map in this case. */
gtk_widget_map (combo_box->priv->separator);
gtk_widget_map (combo_box->priv->arrow);
}
}
else
{
combo_box->priv->button = gtk_toggle_button_new ();
g_signal_connect (combo_box->priv->button, "toggled",
G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
gtk_widget_set_parent (combo_box->priv->button,
GTK_BIN (combo_box)->child->parent);
combo_box->priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (combo_box->priv->button),
combo_box->priv->arrow);
gtk_widget_show_all (combo_box->priv->button);
}
g_signal_connect (combo_box->priv->button, "button_press_event",
G_CALLBACK (gtk_combo_box_menu_button_press),
combo_box);
/* create our funky menu */
box = gtk_menu_new ();
gtk_combo_box_set_popup_widget (combo_box, box);
/* add items */
if (add_childs)
gtk_combo_box_menu_fill (combo_box);
}
static void
gtk_combo_box_menu_fill (GtkComboBox *combo_box)
{
gint i, items;
GtkWidget *menu;
GtkWidget *tmp;
if (!combo_box->priv->model)
return;
items = gtk_tree_model_iter_n_children (combo_box->priv->model, NULL);
menu = combo_box->priv->popup_widget;
for (i = 0; i < items; i++)
{
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (i, -1);
tmp = gtk_cell_view_menu_item_new_from_model (combo_box->priv->model,
path);
g_signal_connect (tmp, "activate",
G_CALLBACK (gtk_combo_box_menu_item_activate),
combo_box);
cell_view_sync_cells (combo_box,
GTK_CELL_VIEW (GTK_BIN (tmp)->child));
gtk_menu_shell_append (GTK_MENU_SHELL (menu), tmp);
gtk_widget_show (tmp);
gtk_tree_path_free (path);
}
}
static void
gtk_combo_box_menu_destroy (GtkComboBox *combo_box)
{
/* disconnect signal handlers */
gtk_combo_box_unset_model (combo_box);
g_signal_handlers_disconnect_matched (combo_box->priv->button,
G_SIGNAL_MATCH_DATA,
0, 0, NULL,
gtk_combo_box_menu_button_press, NULL);
/* unparent will remove our latest ref */
if (combo_box->priv->cell_view)
{
gtk_widget_unparent (combo_box->priv->arrow);
gtk_widget_unparent (combo_box->priv->separator);
gtk_widget_unparent (combo_box->priv->button);
}
else
{
/* will destroy the arrow too */
gtk_widget_unparent (combo_box->priv->button);
}
/* changing the popup window will unref the menu and the childs */
}
/*
* grid
*/
static void
gtk_combo_box_item_get_size (GtkComboBox *combo_box,
gint index,
gint *cols,
gint *rows)
{
GtkTreeIter iter;
gtk_tree_model_iter_nth_child (combo_box->priv->model, &iter, NULL, index);
if (cols)
{
if (combo_box->priv->col_column == -1)
*cols = 1;
else
gtk_tree_model_get (combo_box->priv->model, &iter,
combo_box->priv->col_column, cols,
-1);
}
if (rows)
{
if (combo_box->priv->row_column == -1)
*rows = 1;
else
gtk_tree_model_get (combo_box->priv->model, &iter,
combo_box->priv->row_column, rows,
-1);
}
}
static gboolean
menu_occupied (GtkMenu *menu,
guint left_attach,
guint right_attach,
guint top_attach,
guint bottom_attach)
{
GList *i;
g_return_val_if_fail (GTK_IS_MENU (menu), TRUE);
g_return_val_if_fail (left_attach < right_attach, TRUE);
g_return_val_if_fail (top_attach < bottom_attach, TRUE);
for (i = GTK_MENU_SHELL (menu)->children; i; i = i->next)
{
guint l, r, b, t;
gboolean h_intersect = FALSE;
gboolean v_intersect = FALSE;
gtk_container_child_get (GTK_CONTAINER (menu), i->data,
"left_attach", &l,
"right_attach", &r,
"bottom_attach", &b,
"top_attach", &t,
NULL);
/* look if this item intersects with the given coordinates */
h_intersect = left_attach <= l && l <= right_attach;
h_intersect &= left_attach <= r && r <= right_attach;
v_intersect = top_attach <= t && t <= bottom_attach;
v_intersect &= top_attach <= b && b <= bottom_attach;
if (h_intersect && v_intersect)
return TRUE;
}
return FALSE;
}
static void
gtk_combo_box_relayout_item (GtkComboBox *combo_box,
gint index)
{
gint current_col = 0, current_row = 0;
gint rows, cols;
GList *list;
GtkWidget *item;
GtkWidget *menu;
menu = combo_box->priv->popup_widget;
if (!GTK_IS_MENU_SHELL (menu))
return;
list = gtk_container_get_children (GTK_CONTAINER (menu));
item = g_list_nth_data (list, index);
g_list_free (list);
gtk_combo_box_item_get_size (combo_box, index, &cols, &rows);
/* look for a good spot */
while (1)
{
if (current_col + cols > combo_box->priv->wrap_width)
{
current_col = 0;
current_row++;
}
if (!menu_occupied (GTK_MENU (menu),
current_col, current_col + cols,
current_row, current_row + rows))
break;
current_col++;
}
/* set attach props */
gtk_menu_attach (GTK_MENU (menu), item,
current_col, current_col + cols,
current_row, current_row + rows);
}
static void
gtk_combo_box_relayout (GtkComboBox *combo_box)
{
gint i, items;
GList *list, *j;
GtkWidget *menu;
/* ensure we are in menu style */
if (combo_box->priv->tree_view)
gtk_combo_box_list_destroy (combo_box);
menu = combo_box->priv->popup_widget;
if (!GTK_IS_MENU_SHELL (menu))
{
gtk_combo_box_menu_setup (combo_box, FALSE);
menu = combo_box->priv->popup_widget;
}
/* get rid of all children */
g_return_if_fail (GTK_IS_MENU_SHELL (menu));
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (j = g_list_last (list); j; j = j->prev)
gtk_container_remove (GTK_CONTAINER (menu), j->data);
g_list_free (list);
/* and relayout */
items = gtk_tree_model_iter_n_children (combo_box->priv->model, NULL);
for (i = 0; i < items; i++)
{
GtkWidget *tmp;
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (i, -1);
tmp = gtk_cell_view_menu_item_new_from_model (combo_box->priv->model,
path);
g_signal_connect (tmp, "activate",
G_CALLBACK (gtk_combo_box_menu_item_activate),
combo_box);
cell_view_sync_cells (combo_box, GTK_CELL_VIEW (GTK_BIN (tmp)->child));
gtk_menu_shell_insert (GTK_MENU_SHELL (menu), tmp, i);
if (combo_box->priv->wrap_width)
gtk_combo_box_relayout_item (combo_box, i);
gtk_widget_show (tmp);
gtk_tree_path_free (path);
}
}
/* callbacks */
static gboolean
gtk_combo_box_menu_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
if (! GTK_IS_MENU (combo_box->priv->popup_widget))
return FALSE;
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
{
combo_box->priv->popup_in_progress = TRUE;
gtk_menu_popup (GTK_MENU (combo_box->priv->popup_widget),
NULL, NULL,
gtk_combo_box_menu_position, combo_box,
event->button, event->time);
return TRUE;
}
return FALSE;
}
static void
gtk_combo_box_menu_item_activate (GtkWidget *item,
gpointer user_data)
{
gint index;
GtkWidget *menu;
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
menu = combo_box->priv->popup_widget;
g_return_if_fail (GTK_IS_MENU (menu));
index = g_list_index (GTK_MENU_SHELL (menu)->children, item);
gtk_combo_box_set_active (combo_box, index);
}
static void
gtk_combo_box_menu_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
GtkWidget *menu;
GtkWidget *item;
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
if (!combo_box->priv->popup_widget)
return;
menu = combo_box->priv->popup_widget;
g_return_if_fail (GTK_IS_MENU (menu));
item = gtk_cell_view_menu_item_new_from_model (model, path);
g_signal_connect (item, "activate",
G_CALLBACK (gtk_combo_box_menu_item_activate),
combo_box);
cell_view_sync_cells (combo_box, GTK_CELL_VIEW (GTK_BIN (item)->child));
gtk_menu_shell_insert (GTK_MENU_SHELL (menu), item,
gtk_tree_path_get_indices (path)[0]);
gtk_widget_show (item);
}
static void
gtk_combo_box_menu_row_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer user_data)
{
gint index, items;
GtkWidget *menu;
GtkWidget *item;
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
if (!combo_box->priv->popup_widget)
return;
index = gtk_tree_path_get_indices (path)[0];
items = gtk_tree_model_iter_n_children (model, NULL);
if (gtk_combo_box_get_active (combo_box) == index)
gtk_combo_box_set_active (combo_box, index + 1 % items);
menu = combo_box->priv->popup_widget;
g_return_if_fail (GTK_IS_MENU (menu));
item = g_list_nth_data (GTK_MENU_SHELL (menu)->children, index);
g_return_if_fail (GTK_IS_MENU_ITEM (item));
gtk_container_remove (GTK_CONTAINER (menu), item);
}
static void
gtk_combo_box_menu_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
gint width;
if (!combo_box->priv->popup_widget)
return;
if (combo_box->priv->wrap_width)
gtk_combo_box_relayout_item (combo_box,
gtk_tree_path_get_indices (path)[0]);
width = gtk_combo_box_calc_requested_width (combo_box, path);
if (width > combo_box->priv->width)
{
gtk_widget_set_size_request (combo_box->priv->cell_view, width, -1);
gtk_widget_queue_resize (combo_box->priv->cell_view);
combo_box->priv->width = width;
}
}
/*
* list style
*/
static void
gtk_combo_box_list_setup (GtkComboBox *combo_box)
{
GSList *i;
GtkTreeSelection *sel;
combo_box->priv->button = gtk_toggle_button_new ();
gtk_widget_set_parent (combo_box->priv->button,
GTK_BIN (combo_box)->child->parent);
g_signal_connect (combo_box->priv->button, "button_press_event",
G_CALLBACK (gtk_combo_box_list_button_pressed), combo_box);
g_signal_connect (combo_box->priv->button, "toggled",
G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
combo_box->priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (combo_box->priv->button),
combo_box->priv->arrow);
gtk_widget_show_all (combo_box->priv->button);
if (combo_box->priv->cell_view)
{
combo_box->priv->cell_view_frame = gtk_frame_new (NULL);
gtk_widget_set_parent (combo_box->priv->cell_view_frame,
GTK_BIN (combo_box)->child->parent);
gtk_frame_set_shadow_type (GTK_FRAME (combo_box->priv->cell_view_frame),
GTK_SHADOW_IN);
g_object_set (G_OBJECT (combo_box->priv->cell_view),
"background", "white",
"background_set", TRUE,
NULL);
gtk_widget_show (combo_box->priv->cell_view_frame);
}
combo_box->priv->tree_view = gtk_tree_view_new ();
sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view));
gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (combo_box->priv->tree_view),
FALSE);
g_signal_connect (combo_box->priv->tree_view, "button_press_event",
G_CALLBACK (gtk_combo_box_list_button_pressed),
combo_box);
g_signal_connect (combo_box->priv->tree_view, "button_release_event",
G_CALLBACK (gtk_combo_box_list_button_released),
combo_box);
g_signal_connect (combo_box->priv->tree_view, "key_press_event",
G_CALLBACK (gtk_combo_box_list_key_press),
combo_box);
combo_box->priv->column = gtk_tree_view_column_new ();
gtk_tree_view_append_column (GTK_TREE_VIEW (combo_box->priv->tree_view),
combo_box->priv->column);
/* set the models */
gtk_combo_box_set_model_internal (combo_box);
/* sync up */
for (i = combo_box->priv->cells; i; i = i->next)
{
GSList *j;
ComboCellInfo *info = (ComboCellInfo *)i->data;
if (info->pack == GTK_PACK_START)
gtk_tree_view_column_pack_start (combo_box->priv->column,
info->cell, info->expand);
else if (info->pack == GTK_PACK_END)
gtk_tree_view_column_pack_end (combo_box->priv->column,
info->cell, info->expand);
for (j = info->attributes; j; j = j->next->next)
{
gtk_tree_view_column_add_attribute (combo_box->priv->column,
info->cell,
j->data,
GPOINTER_TO_INT (j->next->data));
}
}
if (combo_box->priv->active_item != -1)
{
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (combo_box->priv->active_item, -1);
if (path)
{
gtk_tree_view_set_cursor (GTK_TREE_VIEW (combo_box->priv->tree_view),
path, NULL, FALSE);
gtk_tree_path_free (path);
}
}
/* set sample/popup widgets */
gtk_combo_box_set_popup_widget (combo_box, combo_box->priv->tree_view);
gtk_widget_show (combo_box->priv->tree_view);
}
static void
gtk_combo_box_list_destroy (GtkComboBox *combo_box)
{
/* disconnect signals */
gtk_combo_box_unset_model (combo_box);
g_signal_handlers_disconnect_matched (combo_box->priv->tree_view,
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, combo_box);
g_signal_handlers_disconnect_matched (combo_box->priv->button,
G_SIGNAL_MATCH_DATA,
0, 0, NULL,
gtk_combo_box_list_button_pressed,
NULL);
/* destroy things (unparent will kill the latest ref from us)
* last unref on button will destroy the arrow
*/
gtk_widget_unparent (combo_box->priv->button);
if (combo_box->priv->cell_view)
{
g_object_set (G_OBJECT (combo_box->priv->cell_view),
"background_set", FALSE,
NULL);
gtk_widget_unparent (combo_box->priv->cell_view_frame);
}
gtk_widget_destroy (combo_box->priv->tree_view);
combo_box->priv->tree_view = NULL;
combo_box->priv->popup_widget = NULL;
}
/* callbacks */
static void
gtk_combo_box_list_remove_grabs (GtkComboBox *combo_box)
{
if (GTK_WIDGET_HAS_GRAB (combo_box->priv->tree_view))
gtk_grab_remove (combo_box->priv->tree_view);
if (GTK_WIDGET_HAS_GRAB (combo_box->priv->popup_window))
{
gtk_grab_remove (combo_box->priv->popup_window);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
}
}
static gboolean
gtk_combo_box_list_button_pressed (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
if (ewidget == combo_box->priv->tree_view)
return TRUE;
if ((ewidget != combo_box->priv->button) ||
gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (combo_box->priv->button)))
return FALSE;
gtk_combo_box_popup (combo_box);
gtk_grab_add (combo_box->priv->popup_window);
gdk_pointer_grab (combo_box->priv->popup_window->window, TRUE,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, GDK_CURRENT_TIME);
gtk_grab_add (combo_box->priv->tree_view);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
TRUE);
combo_box->priv->popup_in_progress = TRUE;
return TRUE;
}
static gboolean
gtk_combo_box_list_button_released (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
gboolean ret;
GtkTreePath *path = NULL;
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
gboolean popup_in_progress = FALSE;
GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
if (combo_box->priv->popup_in_progress)
{
popup_in_progress = TRUE;
combo_box->priv->popup_in_progress = FALSE;
}
if (ewidget != combo_box->priv->tree_view)
{
if (ewidget == combo_box->priv->button &&
!popup_in_progress &&
gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (combo_box->priv->button)))
{
gtk_combo_box_list_remove_grabs (combo_box);
gtk_combo_box_popdown (combo_box);
return TRUE;
}
/* released outside treeview */
if (ewidget != combo_box->priv->button)
{
gtk_combo_box_list_remove_grabs (combo_box);
gtk_combo_box_popdown (combo_box);
return TRUE;
}
return FALSE;
}
/* drop grabs */
gtk_combo_box_list_remove_grabs (combo_box);
/* select something cool */
ret = gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (widget),
event->x, event->y,
&path,
NULL, NULL, NULL);
if (!ret)
return TRUE; /* clicked outside window? */
gtk_combo_box_set_active (combo_box, gtk_tree_path_get_indices (path)[0]);
gtk_combo_box_popdown (combo_box);
gtk_tree_path_free (path);
return TRUE;
}
static gboolean
gtk_combo_box_list_key_press (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
if ((event->keyval == GDK_Return || event->keyval == GDK_KP_Enter ||
event->keyval == GDK_space || event->keyval == GDK_KP_Space) ||
event->keyval == GDK_Escape)
{
if (event->keyval != GDK_Escape)
{
gboolean ret;
GtkTreeIter iter;
GtkTreeModel *model = NULL;
GtkTreeSelection *sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view));
ret = gtk_tree_selection_get_selected (sel, &model, &iter);
if (ret)
{
GtkTreePath *path;
path = gtk_tree_model_get_path (model, &iter);
if (path)
{
gtk_combo_box_set_active (combo_box, gtk_tree_path_get_indices (path)[0]);
gtk_tree_path_free (path);
}
}
}
else
/* reset active item -- this is incredibly lame and ugly */
gtk_combo_box_set_active (combo_box,
gtk_combo_box_get_active (combo_box));
gtk_combo_box_list_remove_grabs (combo_box);
gtk_combo_box_popdown (combo_box);
return TRUE;
}
return FALSE;
}
static void
gtk_combo_box_list_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
gint width;
width = gtk_combo_box_calc_requested_width (combo_box, path);
if (width > combo_box->priv->width)
{
gtk_widget_set_size_request (combo_box->priv->cell_view, width, -1);
gtk_widget_queue_resize (combo_box->priv->cell_view);
combo_box->priv->width = width;
}
}
/*
* GtkCellLayout implementation
*/
static void
gtk_combo_box_cell_layout_pack_start (GtkCellLayout *layout,
GtkCellRenderer *cell,
gboolean expand)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
combo_box = GTK_COMBO_BOX (layout);
info = g_new0 (ComboCellInfo, 1);
info->cell = cell;
info->expand = expand;
info->pack = GTK_PACK_START;
combo_box->priv->cells = g_slist_append (combo_box->priv->cells, info);
if (combo_box->priv->cell_view)
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box->priv->cell_view),
cell, expand);
if (combo_box->priv->column)
gtk_tree_view_column_pack_start (combo_box->priv->column, cell, expand);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (view), cell, expand);
}
g_list_free (list);
}
}
static void
gtk_combo_box_cell_layout_pack_end (GtkCellLayout *layout,
GtkCellRenderer *cell,
gboolean expand)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
combo_box = GTK_COMBO_BOX (layout);
info = g_new0 (ComboCellInfo, 1);
info->cell = cell;
info->expand = expand;
info->pack = GTK_PACK_END;
if (combo_box->priv->cell_view)
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (combo_box->priv->cell_view),
cell, expand);
if (combo_box->priv->column)
gtk_tree_view_column_pack_end (combo_box->priv->column, cell, expand);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (view), cell, expand);
}
g_list_free (list);
}
}
static void
gtk_combo_box_cell_layout_clear (GtkCellLayout *layout)
{
GtkWidget *menu;
GtkComboBox *combo_box;
GSList *i;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
combo_box = GTK_COMBO_BOX (layout);
if (combo_box->priv->cell_view)
gtk_cell_layout_clear (GTK_CELL_LAYOUT (combo_box->priv->cell_view));
if (combo_box->priv->column)
gtk_tree_view_column_clear (combo_box->priv->column);
for (i = combo_box->priv->cells; i; i = i->next)
{
ComboCellInfo *info = (ComboCellInfo *)i->data;
gtk_combo_box_cell_layout_clear_attributes (layout, info->cell);
g_object_unref (G_OBJECT (info->cell));
g_free (info);
}
g_slist_free (combo_box->priv->cells);
combo_box->priv->cells = NULL;
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_clear (GTK_CELL_LAYOUT (view));
}
g_list_free (list);
}
}
static void
gtk_combo_box_cell_layout_add_attribute (GtkCellLayout *layout,
GtkCellRenderer *cell,
const gchar *attribute,
gint column)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
combo_box = GTK_COMBO_BOX (layout);
info = gtk_combo_box_get_cell_info (combo_box, cell);
info->attributes = g_slist_prepend (info->attributes,
GINT_TO_POINTER (column));
info->attributes = g_slist_prepend (info->attributes,
g_strdup (attribute));
if (combo_box->priv->cell_view)
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (combo_box->priv->cell_view),
cell, attribute, column);
if (combo_box->priv->column)
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (combo_box->priv->column),
cell, attribute, column);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (view), cell,
attribute, column);
}
g_list_free (list);
}
gtk_widget_queue_resize (GTK_WIDGET (combo_box));
}
static void
gtk_combo_box_cell_layout_set_cell_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
combo_box = GTK_COMBO_BOX (layout);
info = gtk_combo_box_get_cell_info (combo_box, cell);
g_return_if_fail (info != NULL);
if (info->destroy)
{
GDestroyNotify d = info->destroy;
info->destroy = NULL;
d (info->func_data);
}
info->func = func;
info->func_data = func_data;
info->destroy = destroy;
if (combo_box->priv->cell_view)
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box->priv->cell_view), cell, func, func_data, NULL);
if (combo_box->priv->column)
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box->priv->column), cell, func, func_data, NULL);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (view), cell,
func, func_data, NULL);
}
g_list_free (list);
}
gtk_widget_queue_resize (GTK_WIDGET (combo_box));
}
static void
gtk_combo_box_cell_layout_clear_attributes (GtkCellLayout *layout,
GtkCellRenderer *cell)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
GSList *list;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
combo_box = GTK_COMBO_BOX (layout);
info = gtk_combo_box_get_cell_info (combo_box, cell);
g_return_if_fail (info != NULL);
list = info->attributes;
while (list && list->next)
{
g_free (list->data);
list = list->next->next;
}
g_slist_free (info->attributes);
info->attributes = NULL;
if (combo_box->priv->cell_view)
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (combo_box->priv->cell_view), cell);
if (combo_box->priv->column)
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (combo_box->priv->column), cell);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (view), cell);
}
g_list_free (list);
}
gtk_widget_queue_resize (GTK_WIDGET (combo_box));
}
static void
gtk_combo_box_cell_layout_reorder (GtkCellLayout *layout,
GtkCellRenderer *cell,
gint position)
{
ComboCellInfo *info;
GtkComboBox *combo_box;
GtkWidget *menu;
GSList *link;
g_return_if_fail (GTK_IS_COMBO_BOX (layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
combo_box = GTK_COMBO_BOX (layout);
info = gtk_combo_box_get_cell_info (combo_box, cell);
g_return_if_fail (info != NULL);
g_return_if_fail (position >= 0);
link = g_slist_find (combo_box->priv->cells, info);
g_return_if_fail (link != NULL);
combo_box->priv->cells = g_slist_remove_link (combo_box->priv->cells, link);
combo_box->priv->cells = g_slist_insert (combo_box->priv->cells, info,
position);
if (combo_box->priv->cell_view)
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (combo_box->priv->cell_view),
cell, position);
if (combo_box->priv->column)
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (combo_box->priv->column),
cell, position);
menu = combo_box->priv->popup_widget;
if (GTK_IS_MENU (menu))
{
GList *i, *list;
list = gtk_container_get_children (GTK_CONTAINER (menu));
for (i = list; i; i = i->next)
{
GtkCellView *view;
if (GTK_IS_CELL_VIEW_MENU_ITEM (i->data))
view = GTK_CELL_VIEW (GTK_BIN (i->data)->child);
else
view = GTK_CELL_VIEW (i->data);
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (view), cell, position);
}
g_list_free (list);
}
gtk_widget_queue_draw (GTK_WIDGET (combo_box));
}
/*
* public API
*/
/**
* gtk_combo_box_new:
*
* Creates a new empty #GtkComboBox.
*
* Return value: A new #GtkComboBox.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_COMBO_BOX, NULL));
}
/**
* gtk_combo_box_new_with_model:
* @model: A #GtkTreeModel.
*
* Creates a new #GtkComboBox with the model initialized to @model.
*
* Return value: A new #GtkComboBox.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_new_with_model (GtkTreeModel *model)
{
GtkComboBox *combo_box;
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
combo_box = GTK_COMBO_BOX (g_object_new (GTK_TYPE_COMBO_BOX,
"model", model,
NULL));
return GTK_WIDGET (combo_box);
}
/**
* gtk_combo_box_set_wrap_width:
* @combo_box: A #GtkComboBox.
* @width: Preferred number of columns.
*
* Sets the wrap width of @combo_box to be @width. The wrap width is basically
* the preferred number of columns when you want to the popup to be layed out
* in a table.
*
* Since: 2.4
*/
void
gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
gint width)
{
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (width > 0);
if (width != combo_box->priv->wrap_width)
{
combo_box->priv->wrap_width = width;
gtk_combo_box_relayout (combo_box);
g_object_notify (G_OBJECT (combo_box), "wrap_width");
}
}
/**
* gtk_combo_box_set_row_span_column:
* @combo_box: A #GtkComboBox.
* @row_span: A column in the model passed during construction.
*
* Sets the column with row span information for @combo_box to be @row_span.
* The row span column contains integers which indicate how many rows
* an item should span.
*
* Since: 2.4
*/
void
gtk_combo_box_set_row_span_column (GtkComboBox *combo_box,
gint row_span)
{
gint col;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
col = gtk_tree_model_get_n_columns (combo_box->priv->model);
g_return_if_fail (row_span >= 0 && row_span < col);
if (row_span != combo_box->priv->row_column)
{
combo_box->priv->row_column = row_span;
gtk_combo_box_relayout (combo_box);
g_object_notify (G_OBJECT (combo_box), "row_span_column");
}
}
/**
* gtk_combo_box_set_column_span_column:
* @combo_box: A #GtkComboBox.
* @column_span: A column in the model passed during construction.
*
* Sets the column with column span information for @combo_box to be
* @column_span. The column span column contains integers which indicate
* how many columns an item should span.
*
* Since: 2.4
*/
void
gtk_combo_box_set_column_span_column (GtkComboBox *combo_box,
gint column_span)
{
gint col;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
col = gtk_tree_model_get_n_columns (combo_box->priv->model);
g_return_if_fail (column_span >= 0 && column_span < col);
if (column_span != combo_box->priv->col_column)
{
combo_box->priv->col_column = column_span;
gtk_combo_box_relayout (combo_box);
g_object_notify (G_OBJECT (combo_box), "column_span_column");
}
}
/**
* gtk_combo_box_get_active:
* @combo_box: A #GtkComboBox.
*
* Returns the index of the currently active item, or -1 if there's no
* active item.
*
* Return value: An integer which is the index of the currently active item, or
* -1 if there's no active item.
*
* Since: 2.4
*/
gint
gtk_combo_box_get_active (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
return combo_box->priv->active_item;
}
/**
* gtk_combo_box_set_active:
* @combo_box: A #GtkComboBox.
* @index: An index in the model passed during construction, or -1 to have
* no active item.
*
* Sets the active item of @combo_box to be the item at @index.
*
* Since: 2.4
*/
void
gtk_combo_box_set_active (GtkComboBox *combo_box,
gint index)
{
GtkTreePath *path;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
/* -1 means "no item selected" */
g_return_if_fail (index >= -1);
if (combo_box->priv->active_item == index)
return;
combo_box->priv->active_item = index;
if (index == -1)
{
if (combo_box->priv->tree_view)
gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view)));
else
{
GtkMenu *menu = GTK_MENU (combo_box->priv->popup_widget);
if (GTK_IS_MENU (menu))
gtk_menu_set_active (menu, -1);
}
if (combo_box->priv->cell_view)
gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (combo_box->priv->cell_view), NULL);
}
else
{
path = gtk_tree_path_new_from_indices (index, -1);
if (combo_box->priv->tree_view)
gtk_tree_view_set_cursor (GTK_TREE_VIEW (combo_box->priv->tree_view), path, NULL, FALSE);
else
{
GtkMenu *menu = GTK_MENU (combo_box->priv->popup_widget);
if (GTK_IS_MENU (menu))
gtk_menu_set_active (GTK_MENU (menu), index);
}
if (combo_box->priv->cell_view)
gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (combo_box->priv->cell_view), path);
gtk_tree_path_free (path);
}
g_signal_emit_by_name (combo_box, "changed", NULL, NULL);
}
/**
* gtk_combo_box_get_active_iter:
* @combo_box: A #GtkComboBox
* @iter: The uninitialized #GtkTreeIter.
*
* Set @iter to point to the current active item, if it exists.
*
* Return value: %TRUE, if @iter was set
*
* Since: 2.4
**/
gboolean
gtk_combo_box_get_active_iter (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkTreePath *path;
gint active;
gboolean retval;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
active = gtk_combo_box_get_active (combo_box);
if (active < 0)
return FALSE;
path = gtk_tree_path_new_from_indices (active, -1);
retval = gtk_tree_model_get_iter (gtk_combo_box_get_model (combo_box),
iter, path);
gtk_tree_path_free (path);
return retval;
}
/**
* gtk_combo_box_set_active_iter:
* @combo_box: A #GtkComboBox
* @iter: The #GtkTreeIter.
*
* Sets the current active item to be the one referenced by @iter.
* @iter must correspond to a path of depth one.
*
* Since: 2.4
**/
void
gtk_combo_box_set_active_iter (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkTreePath *path;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
path = gtk_tree_model_get_path (gtk_combo_box_get_model (combo_box), iter);
g_return_if_fail (path != NULL);
g_return_if_fail (gtk_tree_path_get_depth (path) == 1);
gtk_combo_box_set_active (combo_box, gtk_tree_path_get_indices (path)[0]);
gtk_tree_path_free (path);
}
/**
* gtk_combo_box_set_model:
* @combo_box: A #GtkComboBox.
* @model: A #GtkTreeModel.
*
* Sets the model used by @combo_box to be @model. Will unset a
* previously set model (if applicable).
*
* Since: 2.4
*/
void
gtk_combo_box_set_model (GtkComboBox *combo_box,
GtkTreeModel *model)
{
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GTK_IS_TREE_MODEL (model));
if (combo_box->priv->model)
{
gtk_combo_box_unset_model (combo_box);
g_object_unref (G_OBJECT (combo_box->priv->model));
}
combo_box->priv->model = model;
g_object_ref (G_OBJECT (combo_box->priv->model));
gtk_combo_box_set_model_internal (combo_box);
if (!combo_box->priv->tree_view && combo_box->priv->popup_widget)
gtk_combo_box_menu_fill (combo_box);
if (combo_box->priv->cell_view)
gtk_cell_view_set_model (GTK_CELL_VIEW (combo_box->priv->cell_view),
combo_box->priv->model);
}
/**
* gtk_combo_box_get_model
* @combo_box: A #GtkComboBox.
*
* Returns the #GtkTreeModel which is acting as data source for @combo_box.
*
* Return value: A #GtkTreeModel which was passed during construction.
*
* Since: 2.4
*/
GtkTreeModel *
gtk_combo_box_get_model (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return combo_box->priv->model;
}
/* convenience API for simple text combos */
/**
* gtk_combo_box_new_text:
*
* Convenience function which constructs a new text combo box, which is a
* #GtkComboBox just displaying strings. If you use this function to create
* a text combo box, you only want to manipulate it's data source with the
* following convenience functions: gtk_combo_box_append_text(),
* gtk_combo_box_insert_text() and gtk_combo_box_prepend_text().
*
* Return value: A new text combo box.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_new_text (void)
{
GtkWidget *combo_box;
GtkCellRenderer *cell;
GtkListStore *store;
store = gtk_list_store_new (1, G_TYPE_STRING);
combo_box = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box), cell, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box), cell,
"text", 0,
NULL);
return combo_box;
}
/**
* gtk_combo_box_append_text:
* @combo_box: A #GtkComboBox constructed using gtk_combo_box_new_text().
* @text: A string.
*
* Appends @string to the list of strings stored in @combo_box. Note that
* you can only use this function with combo boxes constructed with
* gtk_combo_box_new_text().
*
* Since: 2.4
*/
void
gtk_combo_box_append_text (GtkComboBox *combo_box,
const gchar *text)
{
GtkTreeIter iter;
GtkListStore *store;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GTK_IS_LIST_STORE (combo_box->priv->model));
g_return_if_fail (text != NULL);
store = GTK_LIST_STORE (combo_box->priv->model);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter, 0, text, -1);
}
/**
* gtk_combo_box_insert_text:
* @combo_box: A #GtkComboBox constructed using gtk_combo_box_new_text().
* @position: An index to insert @text.
* @text: A string.
*
* Inserts @string at @position in the list of strings stored in @combo_box.
* Note that you can only use this function with combo boxes constructed
* with gtk_combo_box_new_text().
*
* Since: 2.4
*/
void
gtk_combo_box_insert_text (GtkComboBox *combo_box,
gint position,
const gchar *text)
{
GtkTreeIter iter;
GtkListStore *store;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GTK_IS_LIST_STORE (combo_box->priv->model));
g_return_if_fail (position >= 0);
g_return_if_fail (text != NULL);
store = GTK_LIST_STORE (combo_box->priv->model);
gtk_list_store_insert (store, &iter, position);
gtk_list_store_set (store, &iter, 0, text, -1);
}
/**
* gtk_combo_box_prepend_text:
* @combo_box: A #GtkComboBox constructed with gtk_combo_box_new_text().
* @text: A string.
*
* Prepends @string to the list of strings stored in @combo_box. Note that
* you can only use this function with combo boxes constructed with
* gtk_combo_box_new_text().
*
* Since: 2.4
*/
void
gtk_combo_box_prepend_text (GtkComboBox *combo_box,
const gchar *text)
{
GtkTreeIter iter;
GtkListStore *store;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GTK_IS_LIST_STORE (combo_box->priv->model));
g_return_if_fail (text != NULL);
store = GTK_LIST_STORE (combo_box->priv->model);
gtk_list_store_prepend (store, &iter);
gtk_list_store_set (store, &iter, 0, text, -1);
}
/**
* gtk_combo_box_remove_text:
* @combo_box: A #GtkComboBox constructed with gtk_combo_box_new_text().
* @position: Index of the item to remove.
*
* Removes the string at @position from @combo_box. Note that you can only use
* this function with combo boxes constructed with gtk_combo_box_new_text().
*
* Since: 2.4
*/
void
gtk_combo_box_remove_text (GtkComboBox *combo_box,
gint position)
{
GtkTreeIter iter;
GtkListStore *store;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GTK_IS_LIST_STORE (combo_box->priv->model));
g_return_if_fail (position >= 0);
store = GTK_LIST_STORE (combo_box->priv->model);
if (gtk_tree_model_iter_nth_child (combo_box->priv->model, &iter,
NULL, position))
gtk_list_store_remove (store, &iter);
}
static gboolean
gtk_combo_box_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
gtk_widget_grab_focus (combo_box->priv->button);
return TRUE;
}
static void
gtk_combo_box_destroy (GtkObject *object)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
combo_box->priv->cell_view = NULL;
}
static void
gtk_combo_box_finalize (GObject *object)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
if (GTK_IS_MENU (combo_box->priv->popup_widget))
gtk_combo_box_menu_destroy (combo_box);
if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view))
gtk_combo_box_list_destroy (combo_box);
if (combo_box->priv->popup_window)
gtk_widget_destroy (combo_box->priv->popup_window);
if (combo_box->priv->model)
g_object_unref (combo_box->priv->model);
g_slist_foreach (combo_box->priv->cells, (GFunc)g_free, NULL);
g_slist_free (combo_box->priv->cells);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
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