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gtk2/gtk/gtkmenu.c
George Lebl 234d762ec3 free the event that was returned to us by gtk_get_current_event 
Tue Jan 05 21:18:00 1999  George Lebl  <jirka@5z.com>

        * gtk/gtkmenu.c,gtk/gtkmenuitem.c,gtk/gtkeditable.c: free the
          event that was returned to us by gtk_get_current_event
1999-01-06 05:19:15 +00:00

1096 lines
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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 <ctype.h>
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtksignal.h"
#include "gtkwindow.h"
#define MENU_ITEM_CLASS(w) GTK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass)
#define MENU_NEEDS_RESIZE(m) GTK_MENU_SHELL (m)->menu_flag
typedef struct _GtkMenuAttachData GtkMenuAttachData;
struct _GtkMenuAttachData
{
GtkWidget *attach_widget;
GtkMenuDetachFunc detacher;
};
static void gtk_menu_class_init (GtkMenuClass *klass);
static void gtk_menu_init (GtkMenu *menu);
static void gtk_menu_destroy (GtkObject *object);
static void gtk_menu_realize (GtkWidget *widget);
static void gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_menu_paint (GtkWidget *widget);
static void gtk_menu_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static void gtk_menu_deactivate (GtkMenuShell *menu_shell);
static void gtk_menu_show_all (GtkWidget *widget);
static void gtk_menu_hide_all (GtkWidget *widget);
static void gtk_menu_position (GtkMenu *menu);
static void gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize);
static GtkMenuShellClass *parent_class = NULL;
static const gchar *attach_data_key = "gtk-menu-attach-data";
GtkType
gtk_menu_get_type (void)
{
static GtkType menu_type = 0;
if (!menu_type)
{
static const GtkTypeInfo menu_info =
{
"GtkMenu",
sizeof (GtkMenu),
sizeof (GtkMenuClass),
(GtkClassInitFunc) gtk_menu_class_init,
(GtkObjectInitFunc) gtk_menu_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
menu_type = gtk_type_unique (gtk_menu_shell_get_type (), &menu_info);
}
return menu_type;
}
static void
gtk_menu_class_init (GtkMenuClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkMenuShellClass *menu_shell_class;
GtkBindingSet *binding_set;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
menu_shell_class = (GtkMenuShellClass*) class;
parent_class = gtk_type_class (gtk_menu_shell_get_type ());
object_class->destroy = gtk_menu_destroy;
widget_class->realize = gtk_menu_realize;
widget_class->draw = gtk_menu_draw;
widget_class->size_request = gtk_menu_size_request;
widget_class->size_allocate = gtk_menu_size_allocate;
widget_class->expose_event = gtk_menu_expose;
widget_class->key_press_event = gtk_menu_key_press;
widget_class->motion_notify_event = gtk_menu_motion_notify;
widget_class->show_all = gtk_menu_show_all;
widget_class->hide_all = gtk_menu_hide_all;
menu_shell_class->submenu_placement = GTK_LEFT_RIGHT;
menu_shell_class->deactivate = gtk_menu_deactivate;
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
}
static void
gtk_menu_init (GtkMenu *menu)
{
menu->parent_menu_item = NULL;
menu->old_active_menu_item = NULL;
menu->accel_group = NULL;
menu->position_func = NULL;
menu->position_func_data = NULL;
menu->toplevel = gtk_window_new (GTK_WINDOW_POPUP);
gtk_signal_connect_object (GTK_OBJECT (menu->toplevel), "key_press_event",
GTK_SIGNAL_FUNC (gtk_menu_key_press),
GTK_OBJECT (menu));
gtk_window_set_policy (GTK_WINDOW (menu->toplevel),
FALSE, FALSE, TRUE);
gtk_container_add (GTK_CONTAINER (menu->toplevel), GTK_WIDGET (menu));
/* Refloat the menu, so that reference counting for the menu isn't
* affected by it being a child of the toplevel
*/
GTK_WIDGET_SET_FLAGS (menu, GTK_FLOATING);
menu->tearoff_window = NULL;
menu->torn_off = FALSE;
MENU_NEEDS_RESIZE (menu) = TRUE;
}
static void
gtk_menu_destroy (GtkObject *object)
{
GtkMenu *menu;
GtkMenuAttachData *data;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_MENU (object));
menu = GTK_MENU (object);
gtk_object_ref (object);
data = gtk_object_get_data (object, attach_data_key);
if (data)
gtk_menu_detach (menu);
gtk_menu_set_accel_group (menu, NULL);
/* Add back the reference count for being a child */
gtk_object_ref (object);
gtk_widget_destroy (menu->toplevel);
if (menu->tearoff_window)
gtk_widget_destroy (menu->tearoff_window);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
gtk_object_unref (object);
}
void
gtk_menu_attach_to_widget (GtkMenu *menu,
GtkWidget *attach_widget,
GtkMenuDetachFunc detacher)
{
GtkMenuAttachData *data;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (attach_widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (attach_widget));
g_return_if_fail (detacher != NULL);
/* keep this function in sync with gtk_widget_set_parent()
*/
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (data)
{
g_warning ("gtk_menu_attach_to_widget(): menu already attached to %s",
gtk_type_name (GTK_OBJECT_TYPE (data->attach_widget)));
return;
}
gtk_object_ref (GTK_OBJECT (menu));
gtk_object_sink (GTK_OBJECT (menu));
data = g_new (GtkMenuAttachData, 1);
data->attach_widget = attach_widget;
data->detacher = detacher;
gtk_object_set_data (GTK_OBJECT (menu), attach_data_key, data);
if (GTK_WIDGET_STATE (menu) != GTK_STATE_NORMAL)
gtk_widget_set_state (GTK_WIDGET (menu), GTK_STATE_NORMAL);
/* we don't need to set the style here, since
* we are a toplevel widget.
*/
}
GtkWidget*
gtk_menu_get_attach_widget (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_val_if_fail (menu != NULL, NULL);
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (data)
return data->attach_widget;
return NULL;
}
void
gtk_menu_detach (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
/* keep this function in sync with gtk_widget_unparent()
*/
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (!data)
{
g_warning ("gtk_menu_detach(): menu is not attached");
return;
}
gtk_object_remove_data (GTK_OBJECT (menu), attach_data_key);
data->detacher (data->attach_widget, menu);
if (GTK_WIDGET_REALIZED (menu))
gtk_widget_unrealize (GTK_WIDGET (menu));
g_free (data);
gtk_widget_unref (GTK_WIDGET (menu));
}
GtkWidget*
gtk_menu_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_menu_get_type ()));
}
void
gtk_menu_append (GtkMenu *menu,
GtkWidget *child)
{
gtk_menu_shell_append (GTK_MENU_SHELL (menu), child);
}
void
gtk_menu_prepend (GtkMenu *menu,
GtkWidget *child)
{
gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), child);
}
void
gtk_menu_insert (GtkMenu *menu,
GtkWidget *child,
gint position)
{
gtk_menu_shell_insert (GTK_MENU_SHELL (menu), child, position);
}
void
gtk_menu_popup (GtkMenu *menu,
GtkWidget *parent_menu_shell,
GtkWidget *parent_menu_item,
GtkMenuPositionFunc func,
gpointer data,
guint button,
guint32 activate_time)
{
GtkWidget *widget;
GtkWidget *xgrab_shell;
GtkWidget *parent;
GdkEvent *current_event;
GtkMenuShell *menu_shell;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
menu_shell = GTK_MENU_SHELL (menu);
menu_shell->parent_menu_shell = parent_menu_shell;
menu_shell->active = TRUE;
menu_shell->button = button;
/* If we are popping up the menu from something other than, a button
* press then, as a heuristic, we ignore enter events for the menu
* until we get a MOTION_NOTIFY.
*/
current_event = gtk_get_current_event();
if (current_event)
{
if ((current_event->type != GDK_BUTTON_PRESS) &&
(current_event->type != GDK_ENTER_NOTIFY))
menu_shell->ignore_enter = TRUE;
gdk_event_free(current_event);
}
if (menu->torn_off)
{
GdkPixmap *pixmap;
GdkGC *gc;
GdkGCValues gc_values;
gc_values.subwindow_mode = GDK_INCLUDE_INFERIORS;
gc = gdk_gc_new_with_values (widget->window,
&gc_values, GDK_GC_SUBWINDOW);
pixmap = gdk_pixmap_new (widget->window,
widget->requisition.width,
widget->requisition.height,
-1);
gdk_draw_pixmap (pixmap, gc,
widget->window,
0, 0, 0, 0, -1, -1);
gdk_gc_unref(gc);
gtk_widget_set_usize (menu->tearoff_window,
widget->requisition.width,
widget->requisition.height);
gdk_window_set_back_pixmap (menu->tearoff_window->window, pixmap, FALSE);
gdk_pixmap_unref (pixmap);
/* We force an unrealize here so that we don't trigger redrawing/
* clearing code - we just want to reveal our backing pixmap.
*/
gtk_menu_reparent (menu, menu->toplevel, TRUE);
}
menu->parent_menu_item = parent_menu_item;
menu->position_func = func;
menu->position_func_data = data;
menu_shell->activate_time = activate_time;
gtk_menu_position (menu);
/* We need to show the menu _here_ because code expects to be
* able to tell if the menu is onscreen by looking at the
* GTK_WIDGET_VISIBLE (menu)
*/
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->toplevel);
/* Find the last viewable ancestor, and make an X grab on it
*/
parent = GTK_WIDGET (menu);
xgrab_shell = NULL;
while (parent)
{
gboolean viewable = TRUE;
GtkWidget *tmp = parent;
while (tmp)
{
if (!GTK_WIDGET_MAPPED (tmp))
{
viewable = FALSE;
break;
}
tmp = tmp->parent;
}
if (viewable)
xgrab_shell = parent;
parent = GTK_MENU_SHELL (parent)->parent_menu_shell;
}
if (xgrab_shell && (!GTK_MENU_SHELL (xgrab_shell)->have_xgrab))
{
GdkCursor *cursor = gdk_cursor_new (GDK_ARROW);
if ((gdk_pointer_grab (xgrab_shell->window, TRUE,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK,
NULL, cursor, activate_time) == 0))
{
if (gdk_keyboard_grab (xgrab_shell->window, TRUE,
activate_time) == 0)
GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
else
{
gdk_pointer_ungrab (activate_time);
}
}
gdk_cursor_destroy (cursor);
}
gtk_grab_add (GTK_WIDGET (menu));
}
void
gtk_menu_popdown (GtkMenu *menu)
{
GtkMenuShell *menu_shell;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
menu_shell = GTK_MENU_SHELL (menu);
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->ignore_enter = FALSE;
if (menu_shell->active_menu_item)
{
menu->old_active_menu_item = menu_shell->active_menu_item;
gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
/* The X Grab, if present, will automatically be removed when we hide
* the window */
gtk_widget_hide (menu->toplevel);
if (menu->torn_off)
{
if (GTK_BIN (menu->toplevel)->child)
{
gtk_menu_reparent (menu, menu->tearoff_window, FALSE);
}
else
{
/* We popped up the menu from the tearoff, so we need to
* release the grab - we aren't actually hiding the menu.
*/
if (menu_shell->have_xgrab)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gdk_keyboard_ungrab (GDK_CURRENT_TIME);
}
}
}
else
gtk_widget_hide (GTK_WIDGET (menu));
menu_shell->have_xgrab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu));
}
GtkWidget*
gtk_menu_get_active (GtkMenu *menu)
{
GtkWidget *child;
GList *children;
g_return_val_if_fail (menu != NULL, NULL);
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
if (!menu->old_active_menu_item)
{
child = NULL;
children = GTK_MENU_SHELL (menu)->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_BIN (child)->child)
break;
child = NULL;
}
menu->old_active_menu_item = child;
}
return menu->old_active_menu_item;
}
void
gtk_menu_set_active (GtkMenu *menu,
guint index)
{
GtkWidget *child;
GList *tmp_list;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->children, index);
if (tmp_list)
{
child = tmp_list->data;
if (GTK_BIN (child)->child)
menu->old_active_menu_item = child;
}
}
void
gtk_menu_set_accel_group (GtkMenu *menu,
GtkAccelGroup *accel_group)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->accel_group != accel_group)
{
if (menu->accel_group)
gtk_accel_group_unref (menu->accel_group);
menu->accel_group = accel_group;
if (menu->accel_group)
gtk_accel_group_ref (menu->accel_group);
}
}
void
gtk_menu_reposition (GtkMenu *menu)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
if (GTK_WIDGET_DRAWABLE (menu) && !menu->torn_off)
gtk_menu_position (menu);
}
void
gtk_menu_set_tearoff_state (GtkMenu *menu,
gboolean torn_off)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->torn_off != torn_off)
{
menu->torn_off = torn_off;
if (menu->torn_off)
{
if (GTK_WIDGET_VISIBLE (menu))
gtk_menu_popdown (menu);
if (!menu->tearoff_window)
{
GtkWidget *attach_widget;
menu->tearoff_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_app_paintable (menu->tearoff_window, TRUE);
gtk_signal_connect_object (GTK_OBJECT (menu->tearoff_window),
"key_press_event",
GTK_SIGNAL_FUNC (gtk_menu_key_press),
GTK_OBJECT (menu));
gtk_widget_realize (menu->tearoff_window);
attach_widget = gtk_menu_get_attach_widget (menu);
if (GTK_IS_MENU_ITEM (attach_widget))
{
GtkWidget *child = GTK_BIN (attach_widget)->child;
if (GTK_IS_LABEL (child))
{
gchar *ret;
gtk_label_get (GTK_LABEL (child), &ret);
gdk_window_set_title (menu->tearoff_window->window, ret);
}
}
gdk_window_set_decorations (menu->tearoff_window->window,
GDK_DECOR_ALL |
GDK_DECOR_RESIZEH |
GDK_DECOR_MINIMIZE |
GDK_DECOR_MAXIMIZE);
gtk_window_set_policy (GTK_WINDOW (menu->tearoff_window),
FALSE, FALSE, TRUE);
}
gtk_menu_reparent (menu, menu->tearoff_window, FALSE);
gtk_menu_position (menu);
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->tearoff_window);
}
else
{
gtk_widget_hide (menu->tearoff_window);
gtk_menu_reparent (menu, menu->toplevel, FALSE);
}
}
}
static void
gtk_menu_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &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);
gtk_menu_paint(widget);
}
static void
gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
guint max_toggle_size;
guint max_accel_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (requisition != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
requisition->width = 0;
requisition->height = 0;
max_toggle_size = 0;
max_accel_width = 0;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GTK_MENU_ITEM (child)->show_submenu_indicator = TRUE;
gtk_widget_size_request (child, &child->requisition);
requisition->width = MAX (requisition->width, child->requisition.width);
requisition->height += child->requisition.height;
max_toggle_size = MAX (max_toggle_size, MENU_ITEM_CLASS (child)->toggle_size);
max_accel_width = MAX (max_accel_width, GTK_MENU_ITEM (child)->accelerator_width);
}
}
requisition->width += max_toggle_size + max_accel_width;
requisition->width += (GTK_CONTAINER (menu)->border_width +
widget->style->klass->xthickness) * 2;
requisition->height += (GTK_CONTAINER (menu)->border_width +
widget->style->klass->ythickness) * 2;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
GTK_MENU_ITEM (child)->toggle_size = max_toggle_size;
}
}
static void
gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GtkAllocation child_allocation;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (allocation != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (menu_shell->children)
{
child_allocation.x = (GTK_CONTAINER (menu)->border_width +
widget->style->klass->xthickness);
child_allocation.y = (GTK_CONTAINER (menu)->border_width +
widget->style->klass->ythickness);
child_allocation.width = MAX (1, allocation->width - child_allocation.x * 2);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
child_allocation.height = child->requisition.height;
gtk_widget_size_allocate (child, &child_allocation);
gtk_widget_queue_draw (child);
child_allocation.y += child_allocation.height;
}
}
}
}
static void
gtk_menu_paint (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_paint_box (widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
0, 0, -1, -1);
}
}
static void
gtk_menu_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkMenuShell *menu_shell;
GtkWidget *child;
GdkRectangle child_area;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_paint (widget);
menu_shell = GTK_MENU_SHELL (widget);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (gtk_widget_intersect (child, area, &child_area))
gtk_widget_draw (child, &child_area);
}
}
}
static gint
gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkMenuShell *menu_shell;
GtkWidget *child;
GdkEventExpose child_event;
GList *children;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_paint (widget);
menu_shell = GTK_MENU_SHELL (widget);
child_event = *event;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_NO_WINDOW (child) &&
gtk_widget_intersect (child, &event->area, &child_event.area))
gtk_widget_event (child, (GdkEvent*) &child_event);
}
}
return FALSE;
}
static gint
gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell;
gboolean delete = FALSE;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
if (GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
return TRUE;
switch (event->keyval)
{
case GDK_Delete:
case GDK_KP_Delete:
case GDK_BackSpace:
delete = TRUE;
break;
default:
break;
}
/* Modify the accelerators */
if (delete || gtk_accelerator_valid (event->keyval, event->keyval))
{
if (menu_shell->active_menu_item &&
GTK_BIN (menu_shell->active_menu_item)->child &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL)
{
GtkMenuItem *menu_item;
GtkAccelGroup *accel_group;
menu_item = GTK_MENU_ITEM (menu_shell->active_menu_item);
if (!GTK_MENU (widget)->accel_group)
accel_group = gtk_accel_group_get_default ();
else
accel_group = GTK_MENU (widget)->accel_group;
gtk_widget_remove_accelerators (GTK_WIDGET (menu_item),
gtk_signal_name (menu_item->accelerator_signal),
TRUE);
if (!delete &&
0 == gtk_widget_accelerator_signal (GTK_WIDGET (menu_item),
accel_group,
event->keyval,
event->state))
{
GSList *slist;
slist = gtk_accel_group_entries_from_object (GTK_OBJECT (menu_item));
while (slist)
{
GtkAccelEntry *ac_entry;
ac_entry = slist->data;
if (ac_entry->signal_id == menu_item->accelerator_signal)
break;
slist = slist->next;
}
if (!slist)
gtk_widget_add_accelerator (GTK_WIDGET (menu_item),
gtk_signal_name (menu_item->accelerator_signal),
accel_group,
event->keyval,
event->state,
GTK_ACCEL_VISIBLE);
}
}
}
return FALSE;
}
static gint
gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
if (GTK_MENU_SHELL (widget)->ignore_enter)
GTK_MENU_SHELL (widget)->ignore_enter = FALSE;
else
{
GdkEvent send_event;
send_event.crossing.type = GDK_ENTER_NOTIFY;
send_event.crossing.window = event->window;
send_event.crossing.time = event->time;
gtk_widget_event (widget, &send_event);
}
return FALSE;
}
static void
gtk_menu_deactivate (GtkMenuShell *menu_shell)
{
GtkWidget *parent;
g_return_if_fail (menu_shell != NULL);
g_return_if_fail (GTK_IS_MENU (menu_shell));
parent = menu_shell->parent_menu_shell;
menu_shell->activate_time = 0;
gtk_menu_popdown (GTK_MENU (menu_shell));
if (parent)
gtk_menu_shell_deactivate (GTK_MENU_SHELL (parent));
}
static void
gtk_menu_position (GtkMenu *menu)
{
GtkWidget *widget;
gint x, y;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
gdk_window_get_pointer (NULL, &x, &y, NULL);
/* We need the requisition to figure out the right place to
* popup the menu. In fact, we always need to ask here, since
* if one a size_request was queued while we weren't popped up,
* the requisition won't have been recomputed yet.
*/
gtk_widget_size_request (widget, &widget->requisition);
if (menu->position_func)
(* menu->position_func) (menu, &x, &y, menu->position_func_data);
else
{
gint screen_width;
gint screen_height;
screen_width = gdk_screen_width ();
screen_height = gdk_screen_height ();
x -= 2;
y -= 2;
if ((x + widget->requisition.width) > screen_width)
x -= ((x + widget->requisition.width) - screen_width);
if (x < 0)
x = 0;
if ((y + widget->requisition.height) > screen_height)
y -= ((y + widget->requisition.height) - screen_height);
if (y < 0)
y = 0;
}
gtk_widget_set_uposition (GTK_MENU_SHELL (menu)->active ?
menu->toplevel : menu->tearoff_window,
x, y);
}
/* Reparent the menu, taking care of the refcounting
*/
static void
gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize)
{
GtkObject *object = GTK_OBJECT (menu);
GtkWidget *widget = GTK_WIDGET (menu);
gboolean was_floating = GTK_OBJECT_FLOATING (object);
gtk_object_ref (object);
gtk_object_sink (object);
if (unrealize)
{
gtk_object_ref (object);
gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
gtk_container_add (GTK_CONTAINER (new_parent), widget);
gtk_object_unref (object);
}
else
gtk_widget_reparent (GTK_WIDGET (menu), new_parent);
if (was_floating)
GTK_OBJECT_SET_FLAGS (object, GTK_FLOATING);
else
gtk_object_unref (object);
}
static void
gtk_menu_show_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
/* Show children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
}
static void
gtk_menu_hide_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
/* Hide children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
}
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