gtk2/gtk/gtkitem.c
1997-11-24 22:37:52 +00:00

192 lines
5.0 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "gtkitem.h"
#include "gtksignal.h"
enum {
SELECT,
DESELECT,
TOGGLE,
LAST_SIGNAL
};
static void gtk_item_class_init (GtkItemClass *klass);
static void gtk_item_init (GtkItem *item);
static void gtk_item_map (GtkWidget *widget);
static void gtk_item_unmap (GtkWidget *widget);
static void gtk_item_realize (GtkWidget *widget);
static gint item_signals[LAST_SIGNAL] = { 0 };
guint
gtk_item_get_type ()
{
static guint item_type = 0;
if (!item_type)
{
GtkTypeInfo item_info =
{
"GtkItem",
sizeof (GtkItem),
sizeof (GtkItemClass),
(GtkClassInitFunc) gtk_item_class_init,
(GtkObjectInitFunc) gtk_item_init,
(GtkArgFunc) NULL,
};
item_type = gtk_type_unique (gtk_bin_get_type (), &item_info);
}
return item_type;
}
static void
gtk_item_class_init (GtkItemClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
item_signals[SELECT] =
gtk_signal_new ("select",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkItemClass, select),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
item_signals[DESELECT] =
gtk_signal_new ("deselect",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkItemClass, deselect),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
item_signals[TOGGLE] =
gtk_signal_new ("toggle",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkItemClass, toggle),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, item_signals, LAST_SIGNAL);
widget_class->activate_signal = item_signals[TOGGLE];
widget_class->map = gtk_item_map;
widget_class->unmap = gtk_item_unmap;
widget_class->realize = gtk_item_realize;
class->select = NULL;
class->deselect = NULL;
class->toggle = NULL;
}
static void
gtk_item_init (GtkItem *item)
{
GTK_WIDGET_UNSET_FLAGS (item, GTK_NO_WINDOW);
}
void
gtk_item_select (GtkItem *item)
{
gtk_signal_emit (GTK_OBJECT (item), item_signals[SELECT]);
}
void
gtk_item_deselect (GtkItem *item)
{
gtk_signal_emit (GTK_OBJECT (item), item_signals[DESELECT]);
}
void
gtk_item_toggle (GtkItem *item)
{
gtk_signal_emit (GTK_OBJECT (item), item_signals[TOGGLE]);
}
static void
gtk_item_map (GtkWidget *widget)
{
GtkBin *bin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ITEM (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
gdk_window_show (widget->window);
bin = GTK_BIN (widget);
if (bin->child &&
GTK_WIDGET_VISIBLE (bin->child) &&
!GTK_WIDGET_MAPPED (bin->child))
gtk_widget_map (bin->child);
}
static void
gtk_item_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ITEM (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
gdk_window_hide (widget->window);
}
static void
gtk_item_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ITEM (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = (GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}