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gtk2/gtk/gtkcheckmenuitem.c
Elliot Lee 060978e069 I submitted this patch twice to gtk-devel-list, and received no comments, 
I submitted this patch twice to gtk-devel-list, and received no comments, so
am committing it.  Although not exhaustively tested, I have been using this
gtk+ for a week w/o problems, and I did read the code to ensure that nothing
ever writes to these data structures. If by chance people encounter SEGV's in
gtk+ code that is setting values in global data structures, this patch could
be a possible culprit.

1998-11-30  Elliot Lee  <sopwith@cuc.ml.org>

	* {gdk,gtk}/*.c: Make read-only data structures "static const" to
	allow them to be shared, mainly including (but not limited to) the
	GtkTypeInfo structures for each class.

	* gtk/gtkfilesel.c: Add /net to the "leave me alone" directory listing.
1998-11-30 19:07:15 +00:00

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/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gtkcheckmenuitem.h"
#include "gtkaccellabel.h"
#include "gtksignal.h"
#define CHECK_MENU_ITEM_CLASS(w) GTK_CHECK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass)
enum {
TOGGLED,
LAST_SIGNAL
};
static void gtk_check_menu_item_class_init (GtkCheckMenuItemClass *klass);
static void gtk_check_menu_item_init (GtkCheckMenuItem *check_menu_item);
static void gtk_check_menu_item_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_check_menu_item_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_check_menu_item_activate (GtkMenuItem *menu_item);
static void gtk_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
GdkRectangle *area);
static void gtk_real_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
GdkRectangle *area);
static GtkMenuItemClass *parent_class = NULL;
static guint check_menu_item_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_check_menu_item_get_type (void)
{
static GtkType check_menu_item_type = 0;
if (!check_menu_item_type)
{
static const GtkTypeInfo check_menu_item_info =
{
"GtkCheckMenuItem",
sizeof (GtkCheckMenuItem),
sizeof (GtkCheckMenuItemClass),
(GtkClassInitFunc) gtk_check_menu_item_class_init,
(GtkObjectInitFunc) gtk_check_menu_item_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
check_menu_item_type = gtk_type_unique (gtk_menu_item_get_type (), &check_menu_item_info);
}
return check_menu_item_type;
}
GtkWidget*
gtk_check_menu_item_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_check_menu_item_get_type ()));
}
GtkWidget*
gtk_check_menu_item_new_with_label (const gchar *label)
{
GtkWidget *check_menu_item;
GtkWidget *accel_label;
check_menu_item = gtk_check_menu_item_new ();
accel_label = gtk_accel_label_new (label);
gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
gtk_container_add (GTK_CONTAINER (check_menu_item), accel_label);
gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label), check_menu_item);
gtk_widget_show (accel_label);
return check_menu_item;
}
void
gtk_check_menu_item_set_state (GtkCheckMenuItem *check_menu_item,
gint state)
{
g_return_if_fail (check_menu_item != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
if (check_menu_item->active != (state != 0))
gtk_menu_item_activate (GTK_MENU_ITEM (check_menu_item));
}
void
gtk_check_menu_item_set_show_toggle (GtkCheckMenuItem *menu_item,
gboolean always)
{
g_return_if_fail (menu_item != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (menu_item));
menu_item->always_show_toggle = always != FALSE;
}
void
gtk_check_menu_item_toggled (GtkCheckMenuItem *check_menu_item)
{
gtk_signal_emit (GTK_OBJECT (check_menu_item), check_menu_item_signals[TOGGLED]);
}
static void
gtk_check_menu_item_class_init (GtkCheckMenuItemClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkMenuItemClass *menu_item_class;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
menu_item_class = (GtkMenuItemClass*) klass;
parent_class = gtk_type_class (gtk_menu_item_get_type ());
check_menu_item_signals[TOGGLED] =
gtk_signal_new ("toggled",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkCheckMenuItemClass, toggled),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, check_menu_item_signals, LAST_SIGNAL);
widget_class->draw = gtk_check_menu_item_draw;
widget_class->expose_event = gtk_check_menu_item_expose;
menu_item_class->activate = gtk_check_menu_item_activate;
menu_item_class->toggle_size = 12;
menu_item_class->hide_on_activate = FALSE;
klass->toggled = NULL;
klass->draw_indicator = gtk_real_check_menu_item_draw_indicator;
}
static void
gtk_check_menu_item_init (GtkCheckMenuItem *check_menu_item)
{
check_menu_item->active = FALSE;
check_menu_item->always_show_toggle = FALSE;
}
static void
gtk_check_menu_item_draw (GtkWidget *widget,
GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_CLASS (parent_class)->draw)
(* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
gtk_check_menu_item_draw_indicator (GTK_CHECK_MENU_ITEM (widget), area);
}
static gint
gtk_check_menu_item_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CHECK_MENU_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_CLASS (parent_class)->expose_event)
(* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
gtk_check_menu_item_draw_indicator (GTK_CHECK_MENU_ITEM (widget), &event->area);
return FALSE;
}
static void
gtk_check_menu_item_activate (GtkMenuItem *menu_item)
{
GtkCheckMenuItem *check_menu_item;
g_return_if_fail (menu_item != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (menu_item));
check_menu_item = GTK_CHECK_MENU_ITEM (menu_item);
check_menu_item->active = !check_menu_item->active;
gtk_check_menu_item_toggled (check_menu_item);
gtk_widget_queue_draw (GTK_WIDGET (check_menu_item));
}
static void
gtk_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
GdkRectangle *area)
{
g_return_if_fail (check_menu_item != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
g_return_if_fail (CHECK_MENU_ITEM_CLASS (check_menu_item) != NULL);
if (CHECK_MENU_ITEM_CLASS (check_menu_item)->draw_indicator)
(* CHECK_MENU_ITEM_CLASS (check_menu_item)->draw_indicator) (check_menu_item, area);
}
static void
gtk_real_check_menu_item_draw_indicator (GtkCheckMenuItem *check_menu_item,
GdkRectangle *area)
{
GtkWidget *widget;
GtkStateType state_type;
GtkShadowType shadow_type;
gint width, height;
gint x, y;
g_return_if_fail (check_menu_item != NULL);
g_return_if_fail (GTK_IS_CHECK_MENU_ITEM (check_menu_item));
if (GTK_WIDGET_DRAWABLE (check_menu_item))
{
widget = GTK_WIDGET (check_menu_item);
width = 8;
height = 8;
x = (GTK_CONTAINER (check_menu_item)->border_width +
widget->style->klass->xthickness + 2);
y = (widget->allocation.height - height) / 2;
if (check_menu_item->active ||
check_menu_item->always_show_toggle ||
(GTK_WIDGET_STATE (check_menu_item) == GTK_STATE_PRELIGHT))
{
state_type = GTK_WIDGET_STATE (widget);
if (check_menu_item->always_show_toggle)
{
shadow_type = GTK_SHADOW_OUT;
if (check_menu_item->active)
shadow_type = GTK_SHADOW_IN;
}
else
{
shadow_type = GTK_SHADOW_IN;
if (check_menu_item->active &&
(state_type == GTK_STATE_PRELIGHT))
shadow_type = GTK_SHADOW_OUT;
}
gtk_paint_check (widget->style, widget->window,
state_type, shadow_type,
area, widget, "check",
x, y, width, height);
}
}
}
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