gtk2/gtk/gtktearoffmenuitem.c
Owen Taylor 4e2b60ac4d Patch from Matthias Clasen to remove remove all instances of
Wed Jul 18 19:28:46 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/*.c: Patch from Matthias Clasen to remove remove
	all instances of g_return_if_fail (foo != NULL); that are
	immediately before a g_return_if_fail (GTK_IS_FOO (foo));
	since the second check catches the NULL anyways.
2001-07-18 23:39:26 +00:00

242 lines
6.9 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 Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "gtkmenu.h"
#include "gtksignal.h"
#include "gtktearoffmenuitem.h"
#define ARROW_SIZE 10
#define TEAR_LENGTH 5
#define BORDER_SPACING 3
static void gtk_tearoff_menu_item_class_init (GtkTearoffMenuItemClass *klass);
static void gtk_tearoff_menu_item_init (GtkTearoffMenuItem *tearoff_menu_item);
static void gtk_tearoff_menu_item_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static gint gtk_tearoff_menu_item_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_tearoff_menu_item_activate (GtkMenuItem *menu_item);
static gint gtk_tearoff_menu_item_delete_cb (GtkMenuItem *menu_item,
GdkEventAny *event);
GtkType
gtk_tearoff_menu_item_get_type (void)
{
static GtkType tearoff_menu_item_type = 0;
if (!tearoff_menu_item_type)
{
static const GtkTypeInfo tearoff_menu_item_info =
{
"GtkTearoffMenuItem",
sizeof (GtkTearoffMenuItem),
sizeof (GtkTearoffMenuItemClass),
(GtkClassInitFunc) gtk_tearoff_menu_item_class_init,
(GtkObjectInitFunc) gtk_tearoff_menu_item_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
tearoff_menu_item_type = gtk_type_unique (gtk_menu_item_get_type (), &tearoff_menu_item_info);
}
return tearoff_menu_item_type;
}
GtkWidget*
gtk_tearoff_menu_item_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_tearoff_menu_item_get_type ()));
}
static void
gtk_tearoff_menu_item_class_init (GtkTearoffMenuItemClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkMenuItemClass *menu_item_class;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
menu_item_class = (GtkMenuItemClass*) klass;
widget_class->expose_event = gtk_tearoff_menu_item_expose;
widget_class->size_request = gtk_tearoff_menu_item_size_request;
menu_item_class->activate = gtk_tearoff_menu_item_activate;
}
static void
gtk_tearoff_menu_item_init (GtkTearoffMenuItem *tearoff_menu_item)
{
tearoff_menu_item->torn_off = FALSE;
}
static void
gtk_tearoff_menu_item_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTearoffMenuItem *tearoff;
tearoff = GTK_TEAROFF_MENU_ITEM (widget);
requisition->width = (GTK_CONTAINER (widget)->border_width +
widget->style->xthickness +
BORDER_SPACING) * 2;
requisition->height = (GTK_CONTAINER (widget)->border_width +
widget->style->ythickness) * 2;
if (tearoff->torn_off)
{
requisition->height += ARROW_SIZE;
}
else
{
requisition->height += widget->style->ythickness;
}
}
static void
gtk_tearoff_menu_item_paint (GtkWidget *widget,
GdkRectangle *area)
{
GtkMenuItem *menu_item;
GtkTearoffMenuItem *tearoff_item;
GtkShadowType shadow_type;
gint width, height;
gint x, y;
gint right_max;
g_return_if_fail (GTK_IS_TEAROFF_MENU_ITEM (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
menu_item = GTK_MENU_ITEM (widget);
tearoff_item = GTK_TEAROFF_MENU_ITEM (widget);
x = GTK_CONTAINER (menu_item)->border_width;
y = GTK_CONTAINER (menu_item)->border_width;
width = widget->allocation.width - x * 2;
height = widget->allocation.height - y * 2;
right_max = x + width;
if (widget->state == GTK_STATE_PRELIGHT)
gtk_paint_box (widget->style,
widget->window,
GTK_STATE_PRELIGHT,
GTK_SHADOW_OUT,
area, widget, "menuitem",
x, y, width, height);
else
gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
if (tearoff_item->torn_off)
{
gint arrow_x;
if (widget->state == GTK_STATE_PRELIGHT)
shadow_type = GTK_SHADOW_IN;
else
shadow_type = GTK_SHADOW_OUT;
if (menu_item->toggle_size > ARROW_SIZE)
{
arrow_x = x + (menu_item->toggle_size - ARROW_SIZE)/2;
x += menu_item->toggle_size + BORDER_SPACING;
}
else
{
arrow_x = ARROW_SIZE / 2;
x += 2 * ARROW_SIZE;
}
gtk_draw_arrow (widget->style, widget->window,
widget->state, shadow_type, GTK_ARROW_LEFT, FALSE,
arrow_x, y + height / 2 - 5,
ARROW_SIZE, ARROW_SIZE);
}
while (x < right_max)
{
gtk_draw_hline (widget->style, widget->window, GTK_STATE_NORMAL,
x, MIN (x+TEAR_LENGTH, right_max),
y + (height - widget->style->ythickness)/2);
x += 2 * TEAR_LENGTH;
}
}
}
static gint
gtk_tearoff_menu_item_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_TEAROFF_MENU_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
gtk_tearoff_menu_item_paint (widget, &event->area);
return FALSE;
}
static gint
gtk_tearoff_menu_item_delete_cb (GtkMenuItem *menu_item, GdkEventAny *event)
{
gtk_tearoff_menu_item_activate (menu_item);
return TRUE;
}
static void
gtk_tearoff_menu_item_activate (GtkMenuItem *menu_item)
{
GtkTearoffMenuItem *tearoff_menu_item;
g_return_if_fail (GTK_IS_TEAROFF_MENU_ITEM (menu_item));
tearoff_menu_item = GTK_TEAROFF_MENU_ITEM (menu_item);
tearoff_menu_item->torn_off = !tearoff_menu_item->torn_off;
if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
{
GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
gboolean need_connect;
need_connect = (tearoff_menu_item->torn_off && !menu->tearoff_window);
gtk_menu_set_tearoff_state (GTK_MENU (GTK_WIDGET (menu_item)->parent),
tearoff_menu_item->torn_off);
if (need_connect)
gtk_signal_connect_object (GTK_OBJECT (menu->tearoff_window),
"delete_event",
GTK_SIGNAL_FUNC (gtk_tearoff_menu_item_delete_cb),
GTK_OBJECT (menu_item));
}
gtk_widget_queue_resize (GTK_WIDGET (menu_item));
}