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gimp/app/widgets/gimpuimanager.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpuimanager.c
* Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpmarshal.h"
#include "gimpactiongroup.h"
#include "gimphelp.h"
#include "gimphelp-ids.h"
#include "gimpuimanager.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_NAME,
PROP_GIMP
};
enum
{
UPDATE,
SHOW_TOOLTIP,
HIDE_TOOLTIP,
LAST_SIGNAL
};
static GObject * gimp_ui_manager_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_ui_manager_dispose (GObject *object);
static void gimp_ui_manager_finalize (GObject *object);
static void gimp_ui_manager_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_ui_manager_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gimp_ui_manager_connect_proxy (GtkUIManager *manager,
GtkAction *action,
GtkWidget *proxy);
static GtkWidget * gimp_ui_manager_get_widget (GtkUIManager *manager,
const gchar *path);
static GtkAction * gimp_ui_manager_get_action (GtkUIManager *manager,
const gchar *path);
static void gimp_ui_manager_real_update (GimpUIManager *manager,
gpointer update_data);
static GimpUIManagerUIEntry *
gimp_ui_manager_entry_get (GimpUIManager *manager,
const gchar *ui_path);
static gboolean gimp_ui_manager_entry_load (GimpUIManager *manager,
GimpUIManagerUIEntry *entry,
GError **error);
static GimpUIManagerUIEntry *
gimp_ui_manager_entry_ensure (GimpUIManager *manager,
const gchar *path);
static void gimp_ui_manager_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gpointer data);
static void gimp_ui_manager_menu_pos (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer data);
static void
gimp_ui_manager_delete_popdown_data (GtkObject *object,
GimpUIManager *manager);
static void gimp_ui_manager_item_realize (GtkWidget *widget,
GimpUIManager *manager);
static void gimp_ui_manager_menu_item_select (GtkWidget *widget,
GimpUIManager *manager);
static void gimp_ui_manager_menu_item_deselect (GtkWidget *widget,
GimpUIManager *manager);
static gboolean gimp_ui_manager_item_key_press (GtkWidget *widget,
GdkEventKey *kevent,
GimpUIManager *manager);
G_DEFINE_TYPE (GimpUIManager, gimp_ui_manager, GTK_TYPE_UI_MANAGER)
#define parent_class gimp_ui_manager_parent_class
static guint manager_signals[LAST_SIGNAL] = { 0 };
static void
gimp_ui_manager_class_init (GimpUIManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkUIManagerClass *manager_class = GTK_UI_MANAGER_CLASS (klass);
object_class->constructor = gimp_ui_manager_constructor;
object_class->dispose = gimp_ui_manager_dispose;
object_class->finalize = gimp_ui_manager_finalize;
object_class->set_property = gimp_ui_manager_set_property;
object_class->get_property = gimp_ui_manager_get_property;
manager_class->connect_proxy = gimp_ui_manager_connect_proxy;
manager_class->get_widget = gimp_ui_manager_get_widget;
manager_class->get_action = gimp_ui_manager_get_action;
klass->update = gimp_ui_manager_real_update;
manager_signals[UPDATE] =
g_signal_new ("update",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpUIManagerClass, update),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
manager_signals[SHOW_TOOLTIP] =
g_signal_new ("show-tooltip",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpUIManagerClass, show_tooltip),
NULL, NULL,
gimp_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
manager_signals[HIDE_TOOLTIP] =
g_signal_new ("hide-tooltip",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpUIManagerClass, hide_tooltip),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0,
G_TYPE_NONE);
g_object_class_install_property (object_class, PROP_NAME,
g_param_spec_string ("name",
NULL, NULL,
NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_GIMP,
g_param_spec_object ("gimp",
NULL, NULL,
GIMP_TYPE_GIMP,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
klass->managers = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
}
static void
gimp_ui_manager_init (GimpUIManager *manager)
{
manager->name = NULL;
manager->gimp = NULL;
}
static GObject *
gimp_ui_manager_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpUIManager *manager;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
manager = GIMP_UI_MANAGER (object);
if (manager->name)
{
GimpUIManagerClass *manager_class;
GList *list;
manager_class = GIMP_UI_MANAGER_GET_CLASS (object);
list = g_hash_table_lookup (manager_class->managers, manager->name);
list = g_list_append (list, manager);
g_hash_table_replace (manager_class->managers,
g_strdup (manager->name), list);
}
return object;
}
static void
gimp_ui_manager_dispose (GObject *object)
{
GimpUIManager *manager = GIMP_UI_MANAGER (object);
if (manager->name)
{
GimpUIManagerClass *manager_class;
GList *list;
manager_class = GIMP_UI_MANAGER_GET_CLASS (object);
list = g_hash_table_lookup (manager_class->managers, manager->name);
if (list)
{
list = g_list_remove (list, manager);
if (list)
g_hash_table_replace (manager_class->managers,
g_strdup (manager->name), list);
else
g_hash_table_remove (manager_class->managers, manager->name);
}
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_ui_manager_finalize (GObject *object)
{
GimpUIManager *manager = GIMP_UI_MANAGER (object);
GList *list;
for (list = manager->registered_uis; list; list = g_list_next (list))
{
GimpUIManagerUIEntry *entry = list->data;
g_free (entry->ui_path);
g_free (entry->basename);
if (entry->widget)
g_object_unref (entry->widget);
g_slice_free (GimpUIManagerUIEntry, entry);
}
g_list_free (manager->registered_uis);
manager->registered_uis = NULL;
if (manager->name)
{
g_free (manager->name);
manager->name = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_ui_manager_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GimpUIManager *manager = GIMP_UI_MANAGER (object);
switch (prop_id)
{
case PROP_NAME:
g_free (manager->name);
manager->name = g_value_dup_string (value);
break;
case PROP_GIMP:
manager->gimp = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gimp_ui_manager_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GimpUIManager *manager = GIMP_UI_MANAGER (object);
switch (prop_id)
{
case PROP_NAME:
g_value_set_string (value, manager->name);
break;
case PROP_GIMP:
g_value_set_object (value, manager->gimp);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gimp_ui_manager_connect_proxy (GtkUIManager *manager,
GtkAction *action,
GtkWidget *proxy)
{
g_object_set_qdata (G_OBJECT (proxy), GIMP_HELP_ID,
g_object_get_qdata (G_OBJECT (action),
GIMP_HELP_ID));
if (GTK_IS_MENU_ITEM (proxy))
{
g_signal_connect (proxy, "select",
G_CALLBACK (gimp_ui_manager_menu_item_select),
manager);
g_signal_connect (proxy, "deselect",
G_CALLBACK (gimp_ui_manager_menu_item_deselect),
manager);
g_signal_connect_after (proxy, "realize",
G_CALLBACK (gimp_ui_manager_item_realize),
manager);
}
}
static GtkWidget *
gimp_ui_manager_get_widget (GtkUIManager *manager,
const gchar *path)
{
GimpUIManagerUIEntry *entry;
entry = gimp_ui_manager_entry_ensure (GIMP_UI_MANAGER (manager), path);
if (entry)
{
if (! strcmp (entry->ui_path, path))
return entry->widget;
return GTK_UI_MANAGER_CLASS (parent_class)->get_widget (manager, path);
}
return NULL;
}
static GtkAction *
gimp_ui_manager_get_action (GtkUIManager *manager,
const gchar *path)
{
if (gimp_ui_manager_entry_ensure (GIMP_UI_MANAGER (manager), path))
return GTK_UI_MANAGER_CLASS (parent_class)->get_action (manager, path);
return NULL;
}
static void
gimp_ui_manager_real_update (GimpUIManager *manager,
gpointer update_data)
{
GList *list;
for (list = gtk_ui_manager_get_action_groups (GTK_UI_MANAGER (manager));
list;
list = g_list_next (list))
{
gimp_action_group_update (list->data, update_data);
}
}
/**
* gimp_ui_manager_new:
* @gimp: the @Gimp instance this ui manager belongs to
* @name: the UI manager's name.
*
* Creates a new #GimpUIManager object.
*
* Returns: the new #GimpUIManager
*/
GimpUIManager *
gimp_ui_manager_new (Gimp *gimp,
const gchar *name)
{
GimpUIManager *manager;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
manager = g_object_new (GIMP_TYPE_UI_MANAGER,
"name", name,
"gimp", gimp,
NULL);
return manager;
}
GList *
gimp_ui_managers_from_name (const gchar *name)
{
GimpUIManagerClass *manager_class;
GList *list;
g_return_val_if_fail (name != NULL, NULL);
manager_class = g_type_class_ref (GIMP_TYPE_UI_MANAGER);
list = g_hash_table_lookup (manager_class->managers, name);
g_type_class_unref (manager_class);
return list;
}
void
gimp_ui_manager_update (GimpUIManager *manager,
gpointer update_data)
{
g_return_if_fail (GIMP_IS_UI_MANAGER (manager));
g_signal_emit (manager, manager_signals[UPDATE], 0, update_data);
}
GimpActionGroup *
gimp_ui_manager_get_action_group (GimpUIManager *manager,
const gchar *name)
{
GList *list;
g_return_val_if_fail (GIMP_IS_UI_MANAGER (manager), NULL);
g_return_val_if_fail (name != NULL, NULL);
for (list = gtk_ui_manager_get_action_groups (GTK_UI_MANAGER (manager));
list;
list = g_list_next (list))
{
GimpActionGroup *group = list->data;
if (! strcmp (name, gtk_action_group_get_name (GTK_ACTION_GROUP (group))))
return group;
}
return NULL;
}
GtkAction *
gimp_ui_manager_find_action (GimpUIManager *manager,
const gchar *group_name,
const gchar *action_name)
{
GimpActionGroup *group;
GtkAction *action = NULL;
g_return_val_if_fail (GIMP_IS_UI_MANAGER (manager), NULL);
g_return_val_if_fail (action_name != NULL, NULL);
if (group_name)
{
group = gimp_ui_manager_get_action_group (manager, group_name);
if (group)
action = gtk_action_group_get_action (GTK_ACTION_GROUP (group),
action_name);
}
else
{
GList *list;
for (list = gtk_ui_manager_get_action_groups (GTK_UI_MANAGER (manager));
list;
list = g_list_next (list))
{
group = list->data;
action = gtk_action_group_get_action (GTK_ACTION_GROUP (group),
action_name);
if (action)
break;
}
}
return action;
}
gboolean
gimp_ui_manager_activate_action (GimpUIManager *manager,
const gchar *group_name,
const gchar *action_name)
{
GtkAction *action;
g_return_val_if_fail (GIMP_IS_UI_MANAGER (manager), FALSE);
g_return_val_if_fail (action_name != NULL, FALSE);
action = gimp_ui_manager_find_action (manager, group_name, action_name);
if (action)
gtk_action_activate (action);
return (action != NULL);
}
void
gimp_ui_manager_ui_register (GimpUIManager *manager,
const gchar *ui_path,
const gchar *basename,
GimpUIManagerSetupFunc setup_func)
{
GimpUIManagerUIEntry *entry;
g_return_if_fail (GIMP_IS_UI_MANAGER (manager));
g_return_if_fail (ui_path != NULL);
g_return_if_fail (basename != NULL);
g_return_if_fail (gimp_ui_manager_entry_get (manager, ui_path) == NULL);
entry = g_slice_new0 (GimpUIManagerUIEntry);
entry->ui_path = g_strdup (ui_path);
entry->basename = g_strdup (basename);
entry->setup_func = setup_func;
entry->merge_id = 0;
entry->widget = NULL;
manager->registered_uis = g_list_prepend (manager->registered_uis, entry);
}
typedef struct
{
guint x;
guint y;
} MenuPos;
static void
menu_pos_free (MenuPos *pos)
{
g_slice_free (MenuPos, pos);
}
void
gimp_ui_manager_ui_popup (GimpUIManager *manager,
const gchar *ui_path,
GtkWidget *parent,
GimpMenuPositionFunc position_func,
gpointer position_data,
GtkDestroyNotify popdown_func,
gpointer popdown_data)
{
GtkWidget *widget;
GdkEvent *current_event;
gint x, y;
guint button;
guint32 activate_time;
MenuPos *menu_pos;
g_return_if_fail (GIMP_IS_UI_MANAGER (manager));
g_return_if_fail (ui_path != NULL);
g_return_if_fail (parent == NULL || GTK_IS_WIDGET (parent));
widget = gtk_ui_manager_get_widget (GTK_UI_MANAGER (manager), ui_path);
if (GTK_IS_MENU_ITEM (widget))
widget = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
if (! widget)
return;
g_return_if_fail (GTK_IS_MENU (widget));
if (! position_func)
{
position_func = gimp_ui_manager_menu_position;
position_data = parent;
}
(* position_func) (GTK_MENU (widget), &x, &y, position_data);
current_event = gtk_get_current_event ();
if (current_event && current_event->type == GDK_BUTTON_PRESS)
{
GdkEventButton *bevent = (GdkEventButton *) current_event;
button = bevent->button;
activate_time = bevent->time;
}
else
{
button = 0;
activate_time = 0;
}
if (current_event)
gdk_event_free (current_event);
menu_pos = g_object_get_data (G_OBJECT (widget), "menu-pos");
if (! menu_pos)
{
menu_pos = g_slice_new0 (MenuPos);
g_object_set_data_full (G_OBJECT (widget), "menu-pos", menu_pos,
(GDestroyNotify) menu_pos_free);
}
menu_pos->x = x;
menu_pos->y = y;
if (popdown_func && popdown_data)
{
g_object_set_data_full (G_OBJECT (manager), "popdown-data",
popdown_data, popdown_func);
g_signal_connect (widget, "selection-done",
G_CALLBACK (gimp_ui_manager_delete_popdown_data),
manager);
}
gtk_menu_popup (GTK_MENU (widget),
NULL, NULL,
gimp_ui_manager_menu_pos, menu_pos,
button, activate_time);
}
/* private functions */
static GimpUIManagerUIEntry *
gimp_ui_manager_entry_get (GimpUIManager *manager,
const gchar *ui_path)
{
GList *list;
gchar *path;
path = g_strdup (ui_path);
if (strlen (path) > 1)
{
gchar *p = strchr (path + 1, '/');
if (p)
*p = '\0';
}
for (list = manager->registered_uis; list; list = g_list_next (list))
{
GimpUIManagerUIEntry *entry = list->data;
if (! strcmp (entry->ui_path, path))
{
g_free (path);
return entry;
}
}
g_free (path);
return NULL;
}
static gboolean
gimp_ui_manager_entry_load (GimpUIManager *manager,
GimpUIManagerUIEntry *entry,
GError **error)
{
gchar *filename;
filename = g_build_filename (gimp_data_directory (), "menus",
entry->basename, NULL);
if (manager->gimp->be_verbose)
g_print ("loading menu '%s' for %s\n",
gimp_filename_to_utf8 (filename), entry->ui_path);
entry->merge_id = gtk_ui_manager_add_ui_from_file (GTK_UI_MANAGER (manager),
filename, error);
g_free (filename);
if (! entry->merge_id)
return FALSE;
return TRUE;
}
static GimpUIManagerUIEntry *
gimp_ui_manager_entry_ensure (GimpUIManager *manager,
const gchar *path)
{
GimpUIManagerUIEntry *entry;
entry = gimp_ui_manager_entry_get (manager, path);
if (! entry)
{
g_warning ("%s: no entry registered for \"%s\"", G_STRFUNC, path);
return NULL;
}
if (! entry->merge_id)
{
GError *error = NULL;
if (! gimp_ui_manager_entry_load (manager, entry, &error))
{
if (error->domain == G_FILE_ERROR &&
error->code == G_FILE_ERROR_EXIST)
{
gimp_message (manager->gimp, NULL, GIMP_MESSAGE_ERROR,
"%s\n\n%s\n\n%s",
_("Your GIMP installation is incomplete:"),
error->message,
_("Plase make sure the menu XML files are correctly "
"installed."));
}
else
{
gimp_message (manager->gimp, NULL, GIMP_MESSAGE_ERROR,
_("There was an error parsing the menu definition "
"from %s: %s"),
gimp_filename_to_utf8 (entry->basename),
error->message);
}
g_clear_error (&error);
return NULL;
}
}
if (! entry->widget)
{
GtkUIManager *gtk_manager = GTK_UI_MANAGER (manager);
entry->widget =
GTK_UI_MANAGER_CLASS (parent_class)->get_widget (gtk_manager,
entry->ui_path);
if (entry->widget)
{
g_object_ref (entry->widget);
/* take ownership of popup menus */
if (GTK_IS_MENU (entry->widget))
{
g_object_ref_sink (entry->widget);
g_object_unref (entry->widget);
}
if (entry->setup_func)
entry->setup_func (manager, entry->ui_path);
}
else
{
g_warning ("%s: \"%s\" does not contain registered toplevel "
"widget \"%s\"",
G_STRFUNC, entry->basename, entry->ui_path);
return NULL;
}
}
return entry;
}
static void
gimp_ui_manager_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gpointer data)
{
GdkScreen *screen;
GtkRequisition requisition;
GdkRectangle rect;
gint monitor;
gint pointer_x;
gint pointer_y;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (x != NULL);
g_return_if_fail (y != NULL);
g_return_if_fail (GTK_IS_WIDGET (data));
gdk_display_get_pointer (gtk_widget_get_display (GTK_WIDGET (data)),
&screen, &pointer_x, &pointer_y, NULL);
monitor = gdk_screen_get_monitor_at_point (screen, pointer_x, pointer_y);
gdk_screen_get_monitor_geometry (screen, monitor, &rect);
gtk_menu_set_screen (menu, screen);
gtk_widget_size_request (GTK_WIDGET (menu), &requisition);
if (gtk_widget_get_direction (GTK_WIDGET (menu)) == GTK_TEXT_DIR_RTL)
{
*x = pointer_x - 2 - requisition.width;
if (*x < rect.x)
*x = pointer_x + 2;
}
else
{
*x = pointer_x + 2;
if (*x + requisition.width > rect.x + rect.width)
*x = pointer_x - 2 - requisition.width;
}
*y = pointer_y + 2;
if (*y + requisition.height > rect.y + rect.height)
*y = pointer_y - 2 - requisition.height;
if (*x < rect.x) *x = rect.x;
if (*y < rect.y) *y = rect.y;
}
static void
gimp_ui_manager_menu_pos (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer data)
{
MenuPos *menu_pos = data;
*x = menu_pos->x;
*y = menu_pos->y;
}
static void
gimp_ui_manager_delete_popdown_data (GtkObject *object,
GimpUIManager *manager)
{
g_signal_handlers_disconnect_by_func (object,
gimp_ui_manager_delete_popdown_data,
manager);
g_object_set_data (G_OBJECT (manager), "popdown-data", NULL);
}
static void
gimp_ui_manager_item_realize (GtkWidget *widget,
GimpUIManager *manager)
{
GtkWidget *submenu;
g_signal_handlers_disconnect_by_func (widget,
gimp_ui_manager_item_realize,
manager);
if (GTK_IS_MENU_SHELL (widget->parent))
{
static GQuark quark_key_press_connected = 0;
if (! quark_key_press_connected)
quark_key_press_connected =
g_quark_from_static_string ("gimp-menu-item-key-press-connected");
if (! GPOINTER_TO_INT (g_object_get_qdata (G_OBJECT (widget->parent),
quark_key_press_connected)))
{
g_signal_connect (widget->parent, "key-press-event",
G_CALLBACK (gimp_ui_manager_item_key_press),
manager);
g_object_set_qdata (G_OBJECT (widget->parent),
quark_key_press_connected,
GINT_TO_POINTER (TRUE));
}
}
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
if (submenu)
g_object_set_qdata (G_OBJECT (submenu), GIMP_HELP_ID,
g_object_get_qdata (G_OBJECT (widget),
GIMP_HELP_ID));
}
static void
gimp_ui_manager_menu_item_select (GtkWidget *widget,
GimpUIManager *manager)
{
GtkAction *action = g_object_get_data (G_OBJECT (widget), "gtk-action");
if (action)
{
gchar *tooltip;
g_object_get (action, "tooltip", &tooltip, NULL);
if (tooltip)
{
g_signal_emit (manager, manager_signals[SHOW_TOOLTIP], 0,
tooltip);
g_free (tooltip);
}
}
}
static void
gimp_ui_manager_menu_item_deselect (GtkWidget *widget,
GimpUIManager *manager)
{
g_signal_emit (manager, manager_signals[HIDE_TOOLTIP], 0);
}
static gboolean
gimp_ui_manager_item_key_press (GtkWidget *widget,
GdkEventKey *kevent,
GimpUIManager *manager)
{
gchar *help_id = NULL;
while (! help_id)
{
GtkWidget *menu_item;
menu_item = GTK_MENU_SHELL (widget)->active_menu_item;
/* first, get the help page from the item...
*/
if (menu_item)
{
help_id = g_object_get_qdata (G_OBJECT (menu_item), GIMP_HELP_ID);
if (help_id && ! strlen (help_id))
help_id = NULL;
}
/* ...then try the parent menu...
*/
if (! help_id)
{
help_id = g_object_get_qdata (G_OBJECT (widget), GIMP_HELP_ID);
if (help_id && ! strlen (help_id))
help_id = NULL;
}
/* ...finally try the menu's parent (if any)
*/
if (! help_id)
{
menu_item = NULL;
if (GTK_IS_MENU (widget))
menu_item = gtk_menu_get_attach_widget (GTK_MENU (widget));
if (! menu_item)
break;
widget = menu_item->parent;
if (! widget)
break;
}
}
/* For any valid accelerator key except F1, continue with the
* standard GtkMenuShell callback and assign a new shortcut, but
* don't assign a shortcut to the help menu entries ...
*/
if (kevent->keyval != GDK_F1)
{
if (help_id &&
gtk_accelerator_valid (kevent->keyval, 0) &&
(strcmp (help_id, GIMP_HELP_HELP) == 0 ||
strcmp (help_id, GIMP_HELP_HELP_CONTEXT) == 0))
{
return TRUE;
}
return FALSE;
}
/* ...finally, if F1 was pressed over any menu, show its help page... */
if (help_id)
{
gchar *help_domain = NULL;
gchar *help_string = NULL;
gchar *domain_separator;
help_id = g_strdup (help_id);
domain_separator = strchr (help_id, '?');
if (domain_separator)
{
*domain_separator = '\0';
help_domain = g_strdup (help_id);
help_string = g_strdup (domain_separator + 1);
}
else
{
help_string = g_strdup (help_id);
}
gimp_help (manager->gimp, help_domain, help_string);
g_free (help_domain);
g_free (help_string);
g_free (help_id);
}
return TRUE;
}
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