/* 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, see . */ /* * 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/. */ /** * SECTION:gtkmenu * @Short_description: A menu widget * @Title: GtkMenu * * A #GtkMenu is a #GtkMenuShell that implements a drop down menu * consisting of a list of #GtkMenuItem objects which can be navigated * and activated by the user to perform application functions. * * A #GtkMenu is most commonly dropped down by activating a * #GtkMenuItem in a #GtkMenuBar or popped up by activating a * #GtkMenuItem in another #GtkMenu. * * A #GtkMenu can also be popped up by activating a #GtkComboBox. * Other composite widgets such as the #GtkNotebook can pop up a * #GtkMenu as well. * * Applications can display a #GtkMenu as a popup menu by calling the * gtk_menu_popup() function. The example below shows how an application * can pop up a menu when the 3rd mouse button is pressed. * * ## Connecting the popup signal handler. * * |[ * // connect our handler which will popup the menu * g_signal_connect_swapped (window, "button_press_event", * G_CALLBACK (my_popup_handler), menu); * ]| * * ## Signal handler which displays a popup menu. * * |[ * static gint * my_popup_handler (GtkWidget *widget, GdkEvent *event) * { * GtkMenu *menu; * GdkEventButton *event_button; * * 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); * * // The "widget" is the menu that was supplied when * // g_signal_connect_swapped() was called. * menu = GTK_MENU (widget); * * if (event->type == GDK_BUTTON_PRESS) * { * event_button = (GdkEventButton *) event; * if (event_button->button == GDK_BUTTON_SECONDARY) * { * gtk_menu_popup (menu, NULL, NULL, NULL, NULL, * event_button->button, event_button->time); * return TRUE; * } * } * * return FALSE; * } * ]| */ #include "config.h" #include #include #include "gtkaccellabel.h" #include "gtkaccelmap.h" #include "gtkadjustment.h" #include "gtkbindings.h" #include "gtkcheckmenuitem.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenuprivate.h" #include "gtkmenuitemprivate.h" #include "gtkmenushellprivate.h" #include "gtkwindow.h" #include "gtkbox.h" #include "gtkscrollbar.h" #include "gtksettings.h" #include "gtkprivate.h" #include "gtkwidgetpath.h" #include "gtkwidgetprivate.h" #include "gtkdnd.h" #include "gtkintl.h" #include "gtktypebuiltins.h" #include "gtkwidgetprivate.h" #include "gtkwindowprivate.h" #include "deprecated/gtktearoffmenuitem.h" #include "a11y/gtkmenuaccessible.h" #define NAVIGATION_REGION_OVERSHOOT 50 /* How much the navigation region * extends below the submenu */ #define MENU_SCROLL_STEP1 8 #define MENU_SCROLL_STEP2 15 #define MENU_SCROLL_FAST_ZONE 8 #define MENU_SCROLL_TIMEOUT1 50 #define MENU_SCROLL_TIMEOUT2 20 #define MENU_POPUP_DELAY 225 #define MENU_POPDOWN_DELAY 1000 #define ATTACH_INFO_KEY "gtk-menu-child-attach-info-key" #define ATTACHED_MENUS "gtk-attached-menus" typedef struct _GtkMenuAttachData GtkMenuAttachData; typedef struct _GtkMenuPopdownData GtkMenuPopdownData; struct _GtkMenuAttachData { GtkWidget *attach_widget; GtkMenuDetachFunc detacher; }; struct _GtkMenuPopdownData { GtkMenu *menu; GdkDevice *device; }; typedef struct { gint left_attach; gint right_attach; gint top_attach; gint bottom_attach; gint effective_left_attach; gint effective_right_attach; gint effective_top_attach; gint effective_bottom_attach; } AttachInfo; enum { MOVE_SCROLL, LAST_SIGNAL }; enum { PROP_0, PROP_ACTIVE, PROP_ACCEL_GROUP, PROP_ACCEL_PATH, PROP_ATTACH_WIDGET, PROP_TEAROFF_STATE, PROP_TEAROFF_TITLE, PROP_MONITOR, PROP_RESERVE_TOGGLE_SIZE }; enum { CHILD_PROP_0, CHILD_PROP_LEFT_ATTACH, CHILD_PROP_RIGHT_ATTACH, CHILD_PROP_TOP_ATTACH, CHILD_PROP_BOTTOM_ATTACH }; static void gtk_menu_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_menu_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_menu_set_child_property(GtkContainer *container, GtkWidget *child, guint property_id, const GValue *value, GParamSpec *pspec); static void gtk_menu_get_child_property(GtkContainer *container, GtkWidget *child, guint property_id, GValue *value, GParamSpec *pspec); static void gtk_menu_destroy (GtkWidget *widget); static void gtk_menu_realize (GtkWidget *widget); static void gtk_menu_unrealize (GtkWidget *widget); static void gtk_menu_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_menu_show (GtkWidget *widget); static gboolean gtk_menu_draw (GtkWidget *widget, cairo_t *cr); static gboolean gtk_menu_key_press (GtkWidget *widget, GdkEventKey *event); static gboolean gtk_menu_scroll (GtkWidget *widget, GdkEventScroll *event); static gboolean gtk_menu_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_menu_button_release (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_menu_motion_notify (GtkWidget *widget, GdkEventMotion *event); static gboolean gtk_menu_enter_notify (GtkWidget *widget, GdkEventCrossing *event); static gboolean gtk_menu_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static void gtk_menu_scroll_to (GtkMenu *menu, gint offset); static void gtk_menu_grab_notify (GtkWidget *widget, gboolean was_grabbed); static gboolean gtk_menu_captured_event (GtkWidget *widget, GdkEvent *event); static void gtk_menu_stop_scrolling (GtkMenu *menu); static void gtk_menu_remove_scroll_timeout (GtkMenu *menu); static gboolean gtk_menu_scroll_timeout (gpointer data); static void gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell, GtkWidget *menu_item); static void gtk_menu_select_item (GtkMenuShell *menu_shell, GtkWidget *menu_item); static void gtk_menu_real_insert (GtkMenuShell *menu_shell, GtkWidget *child, gint position); static void gtk_menu_scrollbar_changed (GtkAdjustment *adjustment, GtkMenu *menu); static void gtk_menu_handle_scrolling (GtkMenu *menu, gint event_x, gint event_y, gboolean enter, gboolean motion); static void gtk_menu_set_tearoff_hints (GtkMenu *menu, gint width); static gboolean gtk_menu_focus (GtkWidget *widget, GtkDirectionType direction); static gint gtk_menu_get_popup_delay (GtkMenuShell *menu_shell); static void gtk_menu_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction); static void gtk_menu_real_move_scroll (GtkMenu *menu, GtkScrollType type); static void gtk_menu_stop_navigating_submenu (GtkMenu *menu); static gboolean gtk_menu_stop_navigating_submenu_cb (gpointer user_data); static gboolean gtk_menu_navigating_submenu (GtkMenu *menu, gint event_x, gint event_y); static void gtk_menu_set_submenu_navigation_region (GtkMenu *menu, GtkMenuItem *menu_item, GdkEventCrossing *event); static void gtk_menu_deactivate (GtkMenuShell *menu_shell); static void gtk_menu_show_all (GtkWidget *widget); static void gtk_menu_position (GtkMenu *menu, gboolean set_scroll_offset); static void gtk_menu_reparent (GtkMenu *menu, GtkWidget *new_parent, gboolean unrealize); static void gtk_menu_remove (GtkContainer *menu, GtkWidget *widget); static void gtk_menu_update_title (GtkMenu *menu); static void menu_grab_transfer_window_destroy (GtkMenu *menu); static GdkWindow *menu_grab_transfer_window_get (GtkMenu *menu); static gboolean gtk_menu_real_can_activate_accel (GtkWidget *widget, guint signal_id); static void _gtk_menu_refresh_accel_paths (GtkMenu *menu, gboolean group_changed); static void gtk_menu_get_preferred_width (GtkWidget *widget, gint *minimum_size, gint *natural_size); static void gtk_menu_get_preferred_height (GtkWidget *widget, gint *minimum_size, gint *natural_size); static void gtk_menu_get_preferred_height_for_width (GtkWidget *widget, gint for_size, gint *minimum_size, gint *natural_size); static const gchar attach_data_key[] = "gtk-menu-attach-data"; static guint menu_signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE_WITH_PRIVATE (GtkMenu, gtk_menu, GTK_TYPE_MENU_SHELL) static void menu_queue_resize (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; priv->have_layout = FALSE; gtk_widget_queue_resize (GTK_WIDGET (menu)); } static void attach_info_free (AttachInfo *info) { g_slice_free (AttachInfo, info); } static AttachInfo * get_attach_info (GtkWidget *child) { GObject *object = G_OBJECT (child); AttachInfo *ai = g_object_get_data (object, ATTACH_INFO_KEY); if (!ai) { ai = g_slice_new0 (AttachInfo); g_object_set_data_full (object, I_(ATTACH_INFO_KEY), ai, (GDestroyNotify) attach_info_free); } return ai; } static gboolean is_grid_attached (AttachInfo *ai) { return (ai->left_attach >= 0 && ai->right_attach >= 0 && ai->top_attach >= 0 && ai->bottom_attach >= 0); } static void menu_ensure_layout (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; if (!priv->have_layout) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu); GList *l; gchar *row_occupied; gint current_row; gint max_right_attach; gint max_bottom_attach; /* Find extents of gridded portion */ max_right_attach = 1; max_bottom_attach = 0; for (l = menu_shell->priv->children; l; l = l->next) { GtkWidget *child = l->data; AttachInfo *ai = get_attach_info (child); if (is_grid_attached (ai)) { max_bottom_attach = MAX (max_bottom_attach, ai->bottom_attach); max_right_attach = MAX (max_right_attach, ai->right_attach); } } /* Find empty rows */ row_occupied = g_malloc0 (max_bottom_attach); for (l = menu_shell->priv->children; l; l = l->next) { GtkWidget *child = l->data; AttachInfo *ai = get_attach_info (child); if (is_grid_attached (ai)) { gint i; for (i = ai->top_attach; i < ai->bottom_attach; i++) row_occupied[i] = TRUE; } } /* Lay non-grid-items out in those rows */ current_row = 0; for (l = menu_shell->priv->children; l; l = l->next) { GtkWidget *child = l->data; AttachInfo *ai = get_attach_info (child); if (!is_grid_attached (ai)) { while (current_row < max_bottom_attach && row_occupied[current_row]) current_row++; ai->effective_left_attach = 0; ai->effective_right_attach = max_right_attach; ai->effective_top_attach = current_row; ai->effective_bottom_attach = current_row + 1; current_row++; } else { ai->effective_left_attach = ai->left_attach; ai->effective_right_attach = ai->right_attach; ai->effective_top_attach = ai->top_attach; ai->effective_bottom_attach = ai->bottom_attach; } } g_free (row_occupied); priv->n_rows = MAX (current_row, max_bottom_attach); priv->n_columns = max_right_attach; priv->have_layout = TRUE; } } static gint gtk_menu_get_n_columns (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; menu_ensure_layout (menu); return priv->n_columns; } static gint gtk_menu_get_n_rows (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; menu_ensure_layout (menu); return priv->n_rows; } static void get_effective_child_attach (GtkWidget *child, int *l, int *r, int *t, int *b) { GtkMenu *menu = GTK_MENU (gtk_widget_get_parent (child)); AttachInfo *ai; menu_ensure_layout (menu); ai = get_attach_info (child); if (l) *l = ai->effective_left_attach; if (r) *r = ai->effective_right_attach; if (t) *t = ai->effective_top_attach; if (b) *b = ai->effective_bottom_attach; } static void gtk_menu_class_init (GtkMenuClass *class) { GObjectClass *gobject_class = G_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class); GtkMenuShellClass *menu_shell_class = GTK_MENU_SHELL_CLASS (class); GtkBindingSet *binding_set; gobject_class->set_property = gtk_menu_set_property; gobject_class->get_property = gtk_menu_get_property; widget_class->destroy = gtk_menu_destroy; widget_class->realize = gtk_menu_realize; widget_class->unrealize = gtk_menu_unrealize; widget_class->size_allocate = gtk_menu_size_allocate; widget_class->show = gtk_menu_show; widget_class->draw = gtk_menu_draw; widget_class->scroll_event = gtk_menu_scroll; widget_class->key_press_event = gtk_menu_key_press; widget_class->button_press_event = gtk_menu_button_press; widget_class->button_release_event = gtk_menu_button_release; widget_class->motion_notify_event = gtk_menu_motion_notify; widget_class->show_all = gtk_menu_show_all; widget_class->enter_notify_event = gtk_menu_enter_notify; widget_class->leave_notify_event = gtk_menu_leave_notify; widget_class->focus = gtk_menu_focus; widget_class->can_activate_accel = gtk_menu_real_can_activate_accel; widget_class->grab_notify = gtk_menu_grab_notify; widget_class->get_preferred_width = gtk_menu_get_preferred_width; widget_class->get_preferred_height = gtk_menu_get_preferred_height; widget_class->get_preferred_height_for_width = gtk_menu_get_preferred_height_for_width; container_class->remove = gtk_menu_remove; container_class->get_child_property = gtk_menu_get_child_property; container_class->set_child_property = gtk_menu_set_child_property; menu_shell_class->submenu_placement = GTK_LEFT_RIGHT; menu_shell_class->deactivate = gtk_menu_deactivate; menu_shell_class->select_item = gtk_menu_select_item; menu_shell_class->insert = gtk_menu_real_insert; menu_shell_class->get_popup_delay = gtk_menu_get_popup_delay; menu_shell_class->move_current = gtk_menu_move_current; /** * GtkMenu::move-scroll: * @menu: a #GtkMenu * @scroll_type: a #GtkScrollType */ menu_signals[MOVE_SCROLL] = g_signal_new_class_handler (I_("move-scroll"), G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_CALLBACK (gtk_menu_real_move_scroll), NULL, NULL, _gtk_marshal_VOID__ENUM, G_TYPE_NONE, 1, GTK_TYPE_SCROLL_TYPE); /** * GtkMenu:active: * * The index of the currently selected menu item, or -1 if no * menu item is selected. * * Since: 2.14 **/ g_object_class_install_property (gobject_class, PROP_ACTIVE, g_param_spec_int ("active", P_("Active"), P_("The currently selected menu item"), -1, G_MAXINT, -1, GTK_PARAM_READWRITE)); /** * GtkMenu:accel-group: * * The accel group holding accelerators for the menu. * * Since: 2.14 **/ g_object_class_install_property (gobject_class, PROP_ACCEL_GROUP, g_param_spec_object ("accel-group", P_("Accel Group"), P_("The accel group holding accelerators for the menu"), GTK_TYPE_ACCEL_GROUP, GTK_PARAM_READWRITE)); /** * GtkMenu:accel-path: * * An accel path used to conveniently construct accel paths of child items. * * Since: 2.14 **/ g_object_class_install_property (gobject_class, PROP_ACCEL_PATH, g_param_spec_string ("accel-path", P_("Accel Path"), P_("An accel path used to conveniently construct accel paths of child items"), NULL, GTK_PARAM_READWRITE)); /** * GtkMenu:attach-widget: * * The widget the menu is attached to. Setting this property attaches * the menu without a #GtkMenuDetachFunc. If you need to use a detacher, * use gtk_menu_attach_to_widget() directly. * * Since: 2.14 **/ g_object_class_install_property (gobject_class, PROP_ATTACH_WIDGET, g_param_spec_object ("attach-widget", P_("Attach Widget"), P_("The widget the menu is attached to"), GTK_TYPE_WIDGET, GTK_PARAM_READWRITE)); /** * GtkMenu:tearoff-title: * * A title that may be displayed by the window manager when this * menu is torn-off. * * Deprecated: 3.10 **/ g_object_class_install_property (gobject_class, PROP_TEAROFF_TITLE, g_param_spec_string ("tearoff-title", P_("Tearoff Title"), P_("A title that may be displayed by the window manager when this menu is torn-off"), NULL, GTK_PARAM_READWRITE | G_PARAM_DEPRECATED)); /** * GtkMenu:tearoff-state: * * A boolean that indicates whether the menu is torn-off. * * Since: 2.6 * * Deprecated: 3.10 **/ g_object_class_install_property (gobject_class, PROP_TEAROFF_STATE, g_param_spec_boolean ("tearoff-state", P_("Tearoff State"), P_("A boolean that indicates whether the menu is torn-off"), FALSE, GTK_PARAM_READWRITE | G_PARAM_DEPRECATED)); /** * GtkMenu:monitor: * * The monitor the menu will be popped up on. * * Since: 2.14 **/ g_object_class_install_property (gobject_class, PROP_MONITOR, g_param_spec_int ("monitor", P_("Monitor"), P_("The monitor the menu will be popped up on"), -1, G_MAXINT, -1, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY)); /** * GtkMenu:reserve-toggle-size: * * A boolean that indicates whether the menu reserves space for * toggles and icons, regardless of their actual presence. * * This property should only be changed from its default value * for special-purposes such as tabular menus. Regular menus that * are connected to a menu bar or context menus should reserve * toggle space for consistency. * * Since: 2.18 */ g_object_class_install_property (gobject_class, PROP_RESERVE_TOGGLE_SIZE, g_param_spec_boolean ("reserve-toggle-size", P_("Reserve Toggle Size"), P_("A boolean that indicates whether the menu reserves space for toggles and icons"), TRUE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY)); /** * GtkMenu:horizontal-padding: * * Extra space at the left and right edges of the menu. * * Deprecated: 3.8: use the standard padding CSS property (through objects * like #GtkStyleContext and #GtkCssProvider); the value of this style * property is ignored. */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("horizontal-padding", P_("Horizontal Padding"), P_("Extra space at the left and right edges of the menu"), 0, G_MAXINT, 0, GTK_PARAM_READABLE | G_PARAM_DEPRECATED)); /** * GtkMenu:vertical-padding: * * Extra space at the top and bottom of the menu. * * Deprecated: 3.8: use the standard padding CSS property (through objects * like #GtkStyleContext and #GtkCssProvider); the value of this style * property is ignored. */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("vertical-padding", P_("Vertical Padding"), P_("Extra space at the top and bottom of the menu"), 0, G_MAXINT, 1, GTK_PARAM_READABLE | G_PARAM_DEPRECATED)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("vertical-offset", P_("Vertical Offset"), P_("When the menu is a submenu, position it this number of pixels offset vertically"), G_MININT, G_MAXINT, 0, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("horizontal-offset", P_("Horizontal Offset"), P_("When the menu is a submenu, position it this number of pixels offset horizontally"), G_MININT, G_MAXINT, -2, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_boolean ("double-arrows", P_("Double Arrows"), P_("When scrolling, always show both arrows."), TRUE, GTK_PARAM_READABLE)); /** * GtkMenu:arrow-placement: * * Indicates where scroll arrows should be placed. * * Since: 2.16 **/ gtk_widget_class_install_style_property (widget_class, g_param_spec_enum ("arrow-placement", P_("Arrow Placement"), P_("Indicates where scroll arrows should be placed"), GTK_TYPE_ARROW_PLACEMENT, GTK_ARROWS_BOTH, GTK_PARAM_READABLE)); gtk_container_class_install_child_property (container_class, CHILD_PROP_LEFT_ATTACH, g_param_spec_int ("left-attach", P_("Left Attach"), P_("The column number to attach the left side of the child to"), -1, INT_MAX, -1, GTK_PARAM_READWRITE)); gtk_container_class_install_child_property (container_class, CHILD_PROP_RIGHT_ATTACH, g_param_spec_int ("right-attach", P_("Right Attach"), P_("The column number to attach the right side of the child to"), -1, INT_MAX, -1, GTK_PARAM_READWRITE)); gtk_container_class_install_child_property (container_class, CHILD_PROP_TOP_ATTACH, g_param_spec_int ("top-attach", P_("Top Attach"), P_("The row number to attach the top of the child to"), -1, INT_MAX, -1, GTK_PARAM_READWRITE)); gtk_container_class_install_child_property (container_class, CHILD_PROP_BOTTOM_ATTACH, g_param_spec_int ("bottom-attach", P_("Bottom Attach"), P_("The row number to attach the bottom of the child to"), -1, INT_MAX, -1, GTK_PARAM_READWRITE)); /** * GtkMenu:arrow-scaling: * * Arbitrary constant to scale down the size of the scroll arrow. * * Since: 2.16 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_float ("arrow-scaling", P_("Arrow Scaling"), P_("Arbitrary constant to scale down the size of the scroll arrow"), 0.0, 1.0, 0.7, GTK_PARAM_READABLE)); binding_set = gtk_binding_set_by_class (class); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, 0, I_("move-current"), 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PREV); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PREV); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_NEXT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_NEXT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PARENT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PARENT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_CHILD); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_CHILD); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START); gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Up, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Up, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Down, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Down, 0, "move-scroll", 1, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN); gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_ACCESSIBLE); } static void gtk_menu_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkMenu *menu = GTK_MENU (object); switch (prop_id) { case PROP_ACTIVE: gtk_menu_set_active (menu, g_value_get_int (value)); break; case PROP_ACCEL_GROUP: gtk_menu_set_accel_group (menu, g_value_get_object (value)); break; case PROP_ACCEL_PATH: gtk_menu_set_accel_path (menu, g_value_get_string (value)); break; case PROP_ATTACH_WIDGET: { GtkWidget *widget; widget = gtk_menu_get_attach_widget (menu); if (widget) gtk_menu_detach (menu); widget = (GtkWidget*) g_value_get_object (value); if (widget) gtk_menu_attach_to_widget (menu, widget, NULL); } break; case PROP_TEAROFF_STATE: G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_menu_set_tearoff_state (menu, g_value_get_boolean (value)); G_GNUC_END_IGNORE_DEPRECATIONS; break; case PROP_TEAROFF_TITLE: G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_menu_set_title (menu, g_value_get_string (value)); G_GNUC_END_IGNORE_DEPRECATIONS; break; case PROP_MONITOR: gtk_menu_set_monitor (menu, g_value_get_int (value)); break; case PROP_RESERVE_TOGGLE_SIZE: gtk_menu_set_reserve_toggle_size (menu, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_menu_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkMenu *menu = GTK_MENU (object); switch (prop_id) { case PROP_ACTIVE: g_value_set_int (value, g_list_index (GTK_MENU_SHELL (menu)->priv->children, gtk_menu_get_active (menu))); break; case PROP_ACCEL_GROUP: g_value_set_object (value, gtk_menu_get_accel_group (menu)); break; case PROP_ACCEL_PATH: g_value_set_string (value, gtk_menu_get_accel_path (menu)); break; case PROP_ATTACH_WIDGET: g_value_set_object (value, gtk_menu_get_attach_widget (menu)); break; case PROP_TEAROFF_STATE: G_GNUC_BEGIN_IGNORE_DEPRECATIONS; g_value_set_boolean (value, gtk_menu_get_tearoff_state (menu)); G_GNUC_END_IGNORE_DEPRECATIONS; break; case PROP_TEAROFF_TITLE: G_GNUC_BEGIN_IGNORE_DEPRECATIONS; g_value_set_string (value, gtk_menu_get_title (menu)); G_GNUC_END_IGNORE_DEPRECATIONS; break; case PROP_MONITOR: g_value_set_int (value, gtk_menu_get_monitor (menu)); break; case PROP_RESERVE_TOGGLE_SIZE: g_value_set_boolean (value, gtk_menu_get_reserve_toggle_size (menu)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_menu_set_child_property (GtkContainer *container, GtkWidget *child, guint property_id, const GValue *value, GParamSpec *pspec) { GtkMenu *menu = GTK_MENU (container); AttachInfo *ai = get_attach_info (child); switch (property_id) { case CHILD_PROP_LEFT_ATTACH: ai->left_attach = g_value_get_int (value); break; case CHILD_PROP_RIGHT_ATTACH: ai->right_attach = g_value_get_int (value); break; case CHILD_PROP_TOP_ATTACH: ai->top_attach = g_value_get_int (value); break; case CHILD_PROP_BOTTOM_ATTACH: ai->bottom_attach = g_value_get_int (value); break; default: GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec); return; } menu_queue_resize (menu); } static void gtk_menu_get_child_property (GtkContainer *container, GtkWidget *child, guint property_id, GValue *value, GParamSpec *pspec) { AttachInfo *ai = get_attach_info (child); switch (property_id) { case CHILD_PROP_LEFT_ATTACH: g_value_set_int (value, ai->left_attach); break; case CHILD_PROP_RIGHT_ATTACH: g_value_set_int (value, ai->right_attach); break; case CHILD_PROP_TOP_ATTACH: g_value_set_int (value, ai->top_attach); break; case CHILD_PROP_BOTTOM_ATTACH: g_value_set_int (value, ai->bottom_attach); break; default: GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec); return; } } static gboolean gtk_menu_window_event (GtkWidget *window, GdkEvent *event, GtkWidget *menu) { gboolean handled = FALSE; g_object_ref (window); g_object_ref (menu); switch (event->type) { case GDK_KEY_PRESS: case GDK_KEY_RELEASE: handled = gtk_widget_event (menu, event); break; case GDK_WINDOW_STATE: /* Window for the menu has been closed by the display server or by GDK. * Update the internal state as if the user had clicked outside the * menu */ if (event->window_state.new_window_state & GDK_WINDOW_STATE_WITHDRAWN && event->window_state.changed_mask & GDK_WINDOW_STATE_WITHDRAWN) gtk_menu_shell_deactivate (GTK_MENU_SHELL(menu)); break; default: break; } g_object_unref (window); g_object_unref (menu); return handled; } static void gtk_menu_init (GtkMenu *menu) { GtkMenuPrivate *priv; GtkStyleContext *context; priv = gtk_menu_get_instance_private (menu); menu->priv = priv; priv->toplevel = g_object_connect (g_object_new (GTK_TYPE_WINDOW, "type", GTK_WINDOW_POPUP, "child", menu, NULL), "signal::event", gtk_menu_window_event, menu, "signal::destroy", gtk_widget_destroyed, &priv->toplevel, NULL); gtk_window_set_resizable (GTK_WINDOW (priv->toplevel), FALSE); gtk_window_set_mnemonic_modifier (GTK_WINDOW (priv->toplevel), 0); _gtk_window_request_csd (GTK_WINDOW (priv->toplevel)); gtk_style_context_add_class (gtk_widget_get_style_context (priv->toplevel), GTK_STYLE_CLASS_POPUP); /* Refloat the menu, so that reference counting for the menu isn't * affected by it being a child of the toplevel */ g_object_force_floating (G_OBJECT (menu)); priv->needs_destruction_ref = TRUE; priv->monitor_num = -1; priv->drag_start_y = -1; context = gtk_widget_get_style_context (GTK_WIDGET (menu)); gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENU); _gtk_widget_set_captured_event_handler (GTK_WIDGET (menu), gtk_menu_captured_event); } static void gtk_menu_destroy (GtkWidget *widget) { GtkMenu *menu = GTK_MENU (widget); GtkMenuPrivate *priv = menu->priv; GtkMenuAttachData *data; gtk_menu_remove_scroll_timeout (menu); data = g_object_get_data (G_OBJECT (widget), attach_data_key); if (data) gtk_menu_detach (menu); gtk_menu_stop_navigating_submenu (menu); g_clear_object (&priv->old_active_menu_item); /* Add back the reference count for being a child */ if (priv->needs_destruction_ref) { priv->needs_destruction_ref = FALSE; g_object_ref (widget); } g_clear_object (&priv->accel_group); if (priv->toplevel) gtk_widget_destroy (priv->toplevel); if (priv->tearoff_window) gtk_widget_destroy (priv->tearoff_window); g_clear_pointer (&priv->heights, g_free); g_clear_pointer (&priv->title, g_free); if (priv->position_func_data_destroy) { priv->position_func_data_destroy (priv->position_func_data); priv->position_func_data = NULL; priv->position_func_data_destroy = NULL; } GTK_WIDGET_CLASS (gtk_menu_parent_class)->destroy (widget); } static void menu_change_screen (GtkMenu *menu, GdkScreen *new_screen) { GtkMenuPrivate *priv = menu->priv; if (gtk_widget_has_screen (GTK_WIDGET (menu))) { if (new_screen == gtk_widget_get_screen (GTK_WIDGET (menu))) return; } if (priv->torn_off) { gtk_window_set_screen (GTK_WINDOW (priv->tearoff_window), new_screen); gtk_menu_position (menu, TRUE); } gtk_window_set_screen (GTK_WINDOW (priv->toplevel), new_screen); priv->monitor_num = -1; } static void attach_widget_screen_changed (GtkWidget *attach_widget, GdkScreen *previous_screen, GtkMenu *menu) { if (gtk_widget_has_screen (attach_widget) && !g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-screen")) menu_change_screen (menu, gtk_widget_get_screen (attach_widget)); } static void menu_toplevel_attached_to (GtkWindow *toplevel, GParamSpec *pspec, GtkMenu *menu) { GtkMenuAttachData *data; data = g_object_get_data (G_OBJECT (menu), attach_data_key); g_return_if_fail (data); gtk_menu_detach (menu); } /** * gtk_menu_attach_to_widget: * @menu: a #GtkMenu * @attach_widget: the #GtkWidget that the menu will be attached to * @detacher: (scope async)(allow-none): the user supplied callback function * that will be called when the menu calls gtk_menu_detach() * * Attaches the menu to the widget and provides a callback function * that will be invoked when the menu calls gtk_menu_detach() during * its destruction. * * If the menu is attached to the widget then it will be destroyed * when the widget is destroyed, as if it was a child widget. * An attached menu will also move between screens correctly if the * widgets moves between screens. */ void gtk_menu_attach_to_widget (GtkMenu *menu, GtkWidget *attach_widget, GtkMenuDetachFunc detacher) { GtkMenuAttachData *data; GList *list; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (GTK_IS_WIDGET (attach_widget)); /* keep this function in sync with gtk_widget_set_parent() */ data = g_object_get_data (G_OBJECT (menu), attach_data_key); if (data) { g_warning ("gtk_menu_attach_to_widget(): menu already attached to %s", g_type_name (G_TYPE_FROM_INSTANCE (data->attach_widget))); return; } g_object_ref_sink (menu); data = g_slice_new (GtkMenuAttachData); data->attach_widget = attach_widget; g_signal_connect (attach_widget, "screen-changed", G_CALLBACK (attach_widget_screen_changed), menu); attach_widget_screen_changed (attach_widget, NULL, menu); data->detacher = detacher; g_object_set_data (G_OBJECT (menu), I_(attach_data_key), data); list = g_object_steal_data (G_OBJECT (attach_widget), ATTACHED_MENUS); if (!g_list_find (list, menu)) list = g_list_prepend (list, menu); g_object_set_data_full (G_OBJECT (attach_widget), I_(ATTACHED_MENUS), list, (GDestroyNotify) g_list_free); /* Attach the widget to the toplevel window. */ gtk_window_set_attached_to (GTK_WINDOW (menu->priv->toplevel), attach_widget); g_signal_connect (GTK_WINDOW (menu->priv->toplevel), "notify::attached-to", G_CALLBACK (menu_toplevel_attached_to), menu); _gtk_widget_update_parent_muxer (GTK_WIDGET (menu)); /* Fallback title for menu comes from attach widget */ gtk_menu_update_title (menu); g_object_notify (G_OBJECT (menu), "attach-widget"); } /** * gtk_menu_get_attach_widget: * @menu: a #GtkMenu * * Returns the #GtkWidget that the menu is attached to. * * Returns: (transfer none): the #GtkWidget that the menu is attached to */ GtkWidget* gtk_menu_get_attach_widget (GtkMenu *menu) { GtkMenuAttachData *data; g_return_val_if_fail (GTK_IS_MENU (menu), NULL); data = g_object_get_data (G_OBJECT (menu), attach_data_key); if (data) return data->attach_widget; return NULL; } /** * gtk_menu_detach: * @menu: a #GtkMenu * * Detaches the menu from the widget to which it had been attached. * This function will call the callback function, @detacher, provided * when the gtk_menu_attach_to_widget() function was called. */ void gtk_menu_detach (GtkMenu *menu) { GtkWindow *toplevel; GtkMenuAttachData *data; GList *list; g_return_if_fail (GTK_IS_MENU (menu)); toplevel = GTK_WINDOW (menu->priv->toplevel); /* keep this function in sync with gtk_widget_unparent() */ data = g_object_get_data (G_OBJECT (menu), attach_data_key); if (!data) { g_warning ("gtk_menu_detach(): menu is not attached"); return; } g_object_set_data (G_OBJECT (menu), I_(attach_data_key), NULL); /* Detach the toplevel window. */ g_signal_handlers_disconnect_by_func (toplevel, (gpointer) menu_toplevel_attached_to, menu); if (gtk_window_get_attached_to (toplevel) == data->attach_widget) gtk_window_set_attached_to (toplevel, NULL); g_signal_handlers_disconnect_by_func (data->attach_widget, (gpointer) attach_widget_screen_changed, menu); if (data->detacher) data->detacher (data->attach_widget, menu); list = g_object_steal_data (G_OBJECT (data->attach_widget), ATTACHED_MENUS); list = g_list_remove (list, menu); if (list) g_object_set_data_full (G_OBJECT (data->attach_widget), I_(ATTACHED_MENUS), list, (GDestroyNotify) g_list_free); else g_object_set_data (G_OBJECT (data->attach_widget), I_(ATTACHED_MENUS), NULL); if (gtk_widget_get_realized (GTK_WIDGET (menu))) gtk_widget_unrealize (GTK_WIDGET (menu)); g_slice_free (GtkMenuAttachData, data); _gtk_widget_update_parent_muxer (GTK_WIDGET (menu)); /* Fallback title for menu comes from attach widget */ gtk_menu_update_title (menu); g_object_notify (G_OBJECT (menu), "attach-widget"); g_object_unref (menu); } static void gtk_menu_remove (GtkContainer *container, GtkWidget *widget) { GtkMenu *menu = GTK_MENU (container); GtkMenuPrivate *priv = menu->priv; /* Clear out old_active_menu_item if it matches the item we are removing */ if (priv->old_active_menu_item == widget) g_clear_object (&priv->old_active_menu_item); GTK_CONTAINER_CLASS (gtk_menu_parent_class)->remove (container, widget); g_object_set_data (G_OBJECT (widget), I_(ATTACH_INFO_KEY), NULL); menu_queue_resize (menu); } /** * gtk_menu_new: * * Creates a new #GtkMenu * * Returns: a new #GtkMenu */ GtkWidget* gtk_menu_new (void) { return g_object_new (GTK_TYPE_MENU, NULL); } static void gtk_menu_real_insert (GtkMenuShell *menu_shell, GtkWidget *child, gint position) { GtkMenu *menu = GTK_MENU (menu_shell); GtkMenuPrivate *priv = menu->priv; AttachInfo *ai = get_attach_info (child); ai->left_attach = -1; ai->right_attach = -1; ai->top_attach = -1; ai->bottom_attach = -1; if (gtk_widget_get_realized (GTK_WIDGET (menu_shell))) gtk_widget_set_parent_window (child, priv->bin_window); GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->insert (menu_shell, child, position); menu_queue_resize (menu); } static void gtk_menu_tearoff_bg_copy (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; gint width, height; if (priv->torn_off) { GdkWindow *window; cairo_surface_t *surface; cairo_pattern_t *pattern; cairo_t *cr; priv->tearoff_active = FALSE; priv->saved_scroll_offset = priv->scroll_offset; window = gtk_widget_get_window (priv->tearoff_window); width = gdk_window_get_width (window); height = gdk_window_get_height (window); surface = gdk_window_create_similar_surface (window, CAIRO_CONTENT_COLOR, width, height); cr = cairo_create (surface); gdk_cairo_set_source_window (cr, window, 0, 0); cairo_paint (cr); cairo_destroy (cr); gtk_widget_set_size_request (priv->tearoff_window, width, height); pattern = cairo_pattern_create_for_surface (surface); gdk_window_set_background_pattern (window, pattern); cairo_pattern_destroy (pattern); cairo_surface_destroy (surface); } } static gboolean popup_grab_on_window (GdkWindow *window, GdkDevice *keyboard, GdkDevice *pointer, guint32 activate_time) { if (keyboard && gdk_device_grab (keyboard, window, GDK_OWNERSHIP_WINDOW, TRUE, GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK, NULL, activate_time) != GDK_GRAB_SUCCESS) return FALSE; if (pointer && gdk_device_grab (pointer, window, GDK_OWNERSHIP_WINDOW, TRUE, GDK_SMOOTH_SCROLL_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK, NULL, activate_time) != GDK_GRAB_SUCCESS) { if (keyboard) gdk_device_ungrab (keyboard, activate_time); return FALSE; } return TRUE; } static void associate_menu_grab_transfer_window (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; GdkWindow *toplevel_window; GdkWindow *transfer_window; toplevel_window = gtk_widget_get_window (priv->toplevel); transfer_window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window"); if (toplevel_window == NULL || transfer_window == NULL) return; g_object_set_data (G_OBJECT (toplevel_window), I_("gdk-attached-grab-window"), transfer_window); } /** * gtk_menu_popup_for_device: * @menu: a #GtkMenu * @device: (allow-none): a #GdkDevice * @parent_menu_shell: (allow-none): the menu shell containing the triggering * menu item, or %NULL * @parent_menu_item: (allow-none): the menu item whose activation triggered * the popup, or %NULL * @func: (allow-none): a user supplied function used to position the menu, * or %NULL * @data: (allow-none): user supplied data to be passed to @func * @destroy: (allow-none): destroy notify for @data * @button: the mouse button which was pressed to initiate the event * @activate_time: the time at which the activation event occurred * * Displays a menu and makes it available for selection. * * Applications can use this function to display context-sensitive menus, * and will typically supply %NULL for the @parent_menu_shell, * @parent_menu_item, @func, @data and @destroy parameters. The default * menu positioning function will position the menu at the current position * of @device (or its corresponding pointer). * * The @button parameter should be the mouse button pressed to initiate * the menu popup. If the menu popup was initiated by something other than * a mouse button press, such as a mouse button release or a keypress, * @button should be 0. * * The @activate_time parameter is used to conflict-resolve initiation of * concurrent requests for mouse/keyboard grab requests. To function * properly, this needs to be the time stamp of the user event (such as * a mouse click or key press) that caused the initiation of the popup. * Only if no such event is available, gtk_get_current_event_time() can * be used instead. * * Since: 3.0 */ void gtk_menu_popup_for_device (GtkMenu *menu, GdkDevice *device, GtkWidget *parent_menu_shell, GtkWidget *parent_menu_item, GtkMenuPositionFunc func, gpointer data, GDestroyNotify destroy, guint button, guint32 activate_time) { GtkMenuPrivate *priv = menu->priv; GtkWidget *widget; GtkWidget *xgrab_shell; GtkWidget *parent; GdkEvent *current_event; GtkMenuShell *menu_shell; gboolean grab_keyboard; GtkWidget *parent_toplevel; GdkDevice *keyboard, *pointer, *source_device = NULL; GdkDisplay *display; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (device == NULL || GDK_IS_DEVICE (device)); display = gtk_widget_get_display (GTK_WIDGET (menu)); if (device == NULL) device = gtk_get_current_event_device (); if (device && gdk_device_get_display (device) != display) device = NULL; if (device == NULL) { GdkDeviceManager *device_manager; GList *devices; device_manager = gdk_display_get_device_manager (display); devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER); device = devices->data; g_list_free (devices); } widget = GTK_WIDGET (menu); menu_shell = GTK_MENU_SHELL (menu); if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) { keyboard = device; pointer = gdk_device_get_associated_device (device); } else { pointer = device; keyboard = gdk_device_get_associated_device (device); } menu_shell->priv->parent_menu_shell = parent_menu_shell; priv->seen_item_enter = FALSE; /* 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_get_mapped (tmp)) { viewable = FALSE; break; } tmp = gtk_widget_get_parent (tmp); } if (viewable) xgrab_shell = parent; parent = GTK_MENU_SHELL (parent)->priv->parent_menu_shell; } /* We want to receive events generated when we map the menu; * unfortunately, since there is probably already an implicit * grab in place from the button that the user used to pop up * the menu, we won't receive then -- in particular, the EnterNotify * when the menu pops up under the pointer. * * If we are grabbing on a parent menu shell, no problem; just grab * on that menu shell first before popping up the window with * owner_events = TRUE. * * When grabbing on the menu itself, things get more convoluted -- * we do an explicit grab on a specially created window with * owner_events = TRUE, which we override further down with a * grab on the menu. (We can't grab on the menu until it is mapped; * we probably could just leave the grab on the other window, * with a little reorganization of the code in gtkmenu*). */ grab_keyboard = gtk_menu_shell_get_take_focus (menu_shell); gtk_window_set_accept_focus (GTK_WINDOW (priv->toplevel), grab_keyboard); if (!grab_keyboard) keyboard = NULL; if (xgrab_shell && xgrab_shell != widget) { if (popup_grab_on_window (gtk_widget_get_window (xgrab_shell), keyboard, pointer, activate_time)) { _gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (xgrab_shell), pointer); GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab = TRUE; } } else { GdkWindow *transfer_window; xgrab_shell = widget; transfer_window = menu_grab_transfer_window_get (menu); if (popup_grab_on_window (transfer_window, keyboard, pointer, activate_time)) { _gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (xgrab_shell), pointer); GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab = TRUE; } } if (!GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab) { /* We failed to make our pointer/keyboard grab. * Rather than leaving the user with a stuck up window, * we just abort here. Presumably the user will try again. */ menu_shell->priv->parent_menu_shell = NULL; menu_grab_transfer_window_destroy (menu); return; } _gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (menu), pointer); menu_shell->priv->active = TRUE; menu_shell->priv->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->priv->ignore_enter = TRUE; source_device = gdk_event_get_source_device (current_event); gdk_event_free (current_event); } else menu_shell->priv->ignore_enter = TRUE; if (priv->torn_off) { gtk_menu_tearoff_bg_copy (menu); gtk_menu_reparent (menu, priv->toplevel, FALSE); } parent_toplevel = NULL; if (parent_menu_shell) parent_toplevel = gtk_widget_get_toplevel (parent_menu_shell); else if (!g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-screen")) { GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu); if (attach_widget) parent_toplevel = gtk_widget_get_toplevel (attach_widget); } /* Set transient for to get the right window group and parent */ if (GTK_IS_WINDOW (parent_toplevel)) gtk_window_set_transient_for (GTK_WINDOW (priv->toplevel), GTK_WINDOW (parent_toplevel)); priv->parent_menu_item = parent_menu_item; priv->position_func = func; priv->position_func_data = data; priv->position_func_data_destroy = destroy; menu_shell->priv->activate_time = activate_time; /* We need to show the menu here rather in the init function * because code expects to be able to tell if the menu is onscreen * by looking at gtk_widget_get_visible (menu) */ gtk_widget_show (GTK_WIDGET (menu)); /* Position the menu, possibly changing the size request */ gtk_menu_position (menu, TRUE); associate_menu_grab_transfer_window (menu); gtk_menu_scroll_to (menu, priv->scroll_offset); /* if no item is selected, select the first one */ if (!menu_shell->priv->active_menu_item && source_device && gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN) gtk_menu_shell_select_first (menu_shell, TRUE); /* Once everything is set up correctly, map the toplevel */ gtk_widget_show (priv->toplevel); if (xgrab_shell == widget) popup_grab_on_window (gtk_widget_get_window (widget), keyboard, pointer, activate_time); /* Should always succeed */ gtk_device_grab_add (GTK_WIDGET (menu), pointer, TRUE); if (parent_menu_shell) { gboolean keyboard_mode; keyboard_mode = _gtk_menu_shell_get_keyboard_mode (GTK_MENU_SHELL (parent_menu_shell)); _gtk_menu_shell_set_keyboard_mode (menu_shell, keyboard_mode); } else if (menu_shell->priv->button == 0) /* a keynav-activated context menu */ _gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE); _gtk_menu_shell_update_mnemonics (menu_shell); } /** * gtk_menu_popup: * @menu: a #GtkMenu * @parent_menu_shell: (allow-none): the menu shell containing the * triggering menu item, or %NULL * @parent_menu_item: (allow-none): the menu item whose activation * triggered the popup, or %NULL * @func: (scope async) (allow-none): a user supplied function used to position * the menu, or %NULL * @data: user supplied data to be passed to @func. * @button: the mouse button which was pressed to initiate the event. * @activate_time: the time at which the activation event occurred. * * Displays a menu and makes it available for selection. * * Applications can use this function to display context-sensitive * menus, and will typically supply %NULL for the @parent_menu_shell, * @parent_menu_item, @func and @data parameters. The default menu * positioning function will position the menu at the current mouse * cursor position. * * The @button parameter should be the mouse button pressed to initiate * the menu popup. If the menu popup was initiated by something other * than a mouse button press, such as a mouse button release or a keypress, * @button should be 0. * * The @activate_time parameter is used to conflict-resolve initiation * of concurrent requests for mouse/keyboard grab requests. To function * properly, this needs to be the timestamp of the user event (such as * a mouse click or key press) that caused the initiation of the popup. * Only if no such event is available, gtk_get_current_event_time() can * be used instead. */ void gtk_menu_popup (GtkMenu *menu, GtkWidget *parent_menu_shell, GtkWidget *parent_menu_item, GtkMenuPositionFunc func, gpointer data, guint button, guint32 activate_time) { g_return_if_fail (GTK_IS_MENU (menu)); gtk_menu_popup_for_device (menu, NULL, parent_menu_shell, parent_menu_item, func, data, NULL, button, activate_time); } /** * gtk_menu_popdown: * @menu: a #GtkMenu * * Removes the menu from the screen. */ void gtk_menu_popdown (GtkMenu *menu) { GtkMenuPrivate *priv; GtkMenuShell *menu_shell; GdkDevice *pointer; g_return_if_fail (GTK_IS_MENU (menu)); menu_shell = GTK_MENU_SHELL (menu); priv = menu->priv; menu_shell->priv->parent_menu_shell = NULL; menu_shell->priv->active = FALSE; menu_shell->priv->ignore_enter = FALSE; priv->have_position = FALSE; gtk_menu_stop_scrolling (menu); gtk_menu_stop_navigating_submenu (menu); if (menu_shell->priv->active_menu_item) { if (priv->old_active_menu_item) g_object_unref (priv->old_active_menu_item); priv->old_active_menu_item = menu_shell->priv->active_menu_item; g_object_ref (priv->old_active_menu_item); } gtk_menu_shell_deselect (menu_shell); /* The X Grab, if present, will automatically be removed * when we hide the window */ if (priv->toplevel) { gtk_widget_hide (priv->toplevel); gtk_window_set_transient_for (GTK_WINDOW (priv->toplevel), NULL); } pointer = _gtk_menu_shell_get_grab_device (menu_shell); if (priv->torn_off) { gtk_widget_set_size_request (priv->tearoff_window, -1, -1); if (gtk_bin_get_child (GTK_BIN (priv->toplevel))) { gtk_menu_reparent (menu, priv->tearoff_hbox, TRUE); } 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->priv->have_xgrab && pointer) { GdkDevice *keyboard; gdk_device_ungrab (pointer, GDK_CURRENT_TIME); keyboard = gdk_device_get_associated_device (pointer); if (keyboard) gdk_device_ungrab (keyboard, GDK_CURRENT_TIME); } } /* gtk_menu_popdown is called each time a menu item is selected from * a torn off menu. Only scroll back to the saved position if the * non-tearoff menu was popped down. */ if (!priv->tearoff_active) gtk_menu_scroll_to (menu, priv->saved_scroll_offset); priv->tearoff_active = TRUE; } else gtk_widget_hide (GTK_WIDGET (menu)); menu_shell->priv->have_xgrab = FALSE; if (pointer) gtk_device_grab_remove (GTK_WIDGET (menu), pointer); _gtk_menu_shell_set_grab_device (menu_shell, NULL); menu_grab_transfer_window_destroy (menu); } /** * gtk_menu_get_active: * @menu: a #GtkMenu * * Returns the selected menu item from the menu. This is used by the * #GtkComboBox. * * Returns: (transfer none): the #GtkMenuItem that was last selected * in the menu. If a selection has not yet been made, the * first menu item is selected. */ GtkWidget* gtk_menu_get_active (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; GtkWidget *child; GList *children; g_return_val_if_fail (GTK_IS_MENU (menu), NULL); if (!priv->old_active_menu_item) { child = NULL; children = GTK_MENU_SHELL (menu)->priv->children; while (children) { child = children->data; children = children->next; if (gtk_bin_get_child (GTK_BIN (child))) break; child = NULL; } priv->old_active_menu_item = child; if (priv->old_active_menu_item) g_object_ref (priv->old_active_menu_item); } return priv->old_active_menu_item; } /** * gtk_menu_set_active: * @menu: a #GtkMenu * @index: the index of the menu item to select. Index values are * from 0 to n-1 * * Selects the specified menu item within the menu. This is used by * the #GtkComboBox and should not be used by anyone else. */ void gtk_menu_set_active (GtkMenu *menu, guint index) { GtkMenuPrivate *priv = menu->priv; GtkWidget *child; GList *tmp_list; g_return_if_fail (GTK_IS_MENU (menu)); tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->priv->children, index); if (tmp_list) { child = tmp_list->data; if (gtk_bin_get_child (GTK_BIN (child))) { if (priv->old_active_menu_item) g_object_unref (priv->old_active_menu_item); priv->old_active_menu_item = child; g_object_ref (priv->old_active_menu_item); } } g_object_notify (G_OBJECT (menu), "active"); } /** * gtk_menu_set_accel_group: * @menu: a #GtkMenu * @accel_group: (allow-none): the #GtkAccelGroup to be associated * with the menu. * * Set the #GtkAccelGroup which holds global accelerators for the * menu. This accelerator group needs to also be added to all windows * that this menu is being used in with gtk_window_add_accel_group(), * in order for those windows to support all the accelerators * contained in this group. */ void gtk_menu_set_accel_group (GtkMenu *menu, GtkAccelGroup *accel_group) { GtkMenuPrivate *priv = menu->priv; g_return_if_fail (GTK_IS_MENU (menu)); if (priv->accel_group != accel_group) { if (priv->accel_group) g_object_unref (priv->accel_group); priv->accel_group = accel_group; if (priv->accel_group) g_object_ref (priv->accel_group); _gtk_menu_refresh_accel_paths (menu, TRUE); } } /** * gtk_menu_get_accel_group: * @menu: a #GtkMenu * * Gets the #GtkAccelGroup which holds global accelerators for the * menu. See gtk_menu_set_accel_group(). * * Returns: (transfer none): the #GtkAccelGroup associated with the menu */ GtkAccelGroup* gtk_menu_get_accel_group (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), NULL); return menu->priv->accel_group; } static gboolean gtk_menu_real_can_activate_accel (GtkWidget *widget, guint signal_id) { /* Menu items chain here to figure whether they can activate their * accelerators. Unlike ordinary widgets, menus allow accel * activation even if invisible since that's the usual case for * submenus/popup-menus. however, the state of the attach widget * affects the "activeness" of the menu. */ GtkWidget *awidget = gtk_menu_get_attach_widget (GTK_MENU (widget)); if (awidget) return gtk_widget_can_activate_accel (awidget, signal_id); else return gtk_widget_is_sensitive (widget); } /** * gtk_menu_set_accel_path: * @menu: a valid #GtkMenu * @accel_path: (allow-none): a valid accelerator path * * Sets an accelerator path for this menu from which accelerator paths * for its immediate children, its menu items, can be constructed. * The main purpose of this function is to spare the programmer the * inconvenience of having to call gtk_menu_item_set_accel_path() on * each menu item that should support runtime user changable accelerators. * Instead, by just calling gtk_menu_set_accel_path() on their parent, * each menu item of this menu, that contains a label describing its * purpose, automatically gets an accel path assigned. * * For example, a menu containing menu items “New” and “Exit”, will, after * `gtk_menu_set_accel_path (menu, "/File");` has been * called, assign its items the accel paths: `"/File/New"` * and `"/File/Exit"`. * * Assigning accel paths to menu items then enables the user to change * their accelerators at runtime. More details about accelerator paths * and their default setups can be found at gtk_accel_map_add_entry(). * * Note that @accel_path string will be stored in a #GQuark. Therefore, * if you pass a static string, you can save some memory by interning * it first with g_intern_static_string(). */ void gtk_menu_set_accel_path (GtkMenu *menu, const gchar *accel_path) { GtkMenuPrivate *priv = menu->priv; g_return_if_fail (GTK_IS_MENU (menu)); if (accel_path) g_return_if_fail (accel_path[0] == '<' && strchr (accel_path, '/')); /* simplistic check */ /* FIXME: accel_path should be defined as const gchar* */ priv->accel_path = (gchar*)g_intern_string (accel_path); if (priv->accel_path) _gtk_menu_refresh_accel_paths (menu, FALSE); } /** * gtk_menu_get_accel_path: * @menu: a valid #GtkMenu * * Retrieves the accelerator path set on the menu. * * Returns: the accelerator path set on the menu. * * Since: 2.14 */ const gchar* gtk_menu_get_accel_path (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), NULL); return menu->priv->accel_path; } typedef struct { GtkMenu *menu; gboolean group_changed; } AccelPropagation; static void refresh_accel_paths_foreach (GtkWidget *widget, gpointer data) { GtkMenuPrivate *priv; AccelPropagation *prop = data; if (GTK_IS_MENU_ITEM (widget)) /* should always be true */ { priv = prop->menu->priv; _gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget), priv->accel_path, priv->accel_group, prop->group_changed); } } static void _gtk_menu_refresh_accel_paths (GtkMenu *menu, gboolean group_changed) { GtkMenuPrivate *priv = menu->priv; g_return_if_fail (GTK_IS_MENU (menu)); if (priv->accel_path && priv->accel_group) { AccelPropagation prop; prop.menu = menu; prop.group_changed = group_changed; gtk_container_foreach (GTK_CONTAINER (menu), refresh_accel_paths_foreach, &prop); } } /** * gtk_menu_reposition: * @menu: a #GtkMenu * * Repositions the menu according to its position function. */ void gtk_menu_reposition (GtkMenu *menu) { g_return_if_fail (GTK_IS_MENU (menu)); if (!menu->priv->torn_off && gtk_widget_is_drawable (GTK_WIDGET (menu))) gtk_menu_position (menu, FALSE); } static void gtk_menu_scrollbar_changed (GtkAdjustment *adjustment, GtkMenu *menu) { double value; value = gtk_adjustment_get_value (adjustment); if (menu->priv->scroll_offset != value) gtk_menu_scroll_to (menu, value); } static void gtk_menu_set_tearoff_hints (GtkMenu *menu, gint width) { GtkMenuPrivate *priv = menu->priv; GdkGeometry geometry_hints; if (!priv->tearoff_window) return; if (gtk_widget_get_visible (priv->tearoff_scrollbar)) { GtkRequisition requisition; gtk_widget_get_preferred_size (priv->tearoff_scrollbar, &requisition, NULL); width += requisition.width; } geometry_hints.min_width = width; geometry_hints.max_width = width; geometry_hints.min_height = 0; geometry_hints.max_height = priv->requested_height; gtk_window_set_geometry_hints (GTK_WINDOW (priv->tearoff_window), NULL, &geometry_hints, GDK_HINT_MAX_SIZE|GDK_HINT_MIN_SIZE); } static void gtk_menu_update_title (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; if (priv->tearoff_window) { const gchar *title; GtkWidget *attach_widget; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; title = gtk_menu_get_title (menu); G_GNUC_END_IGNORE_DEPRECATIONS; if (!title) { attach_widget = gtk_menu_get_attach_widget (menu); if (GTK_IS_MENU_ITEM (attach_widget)) { GtkWidget *child = gtk_bin_get_child (GTK_BIN (attach_widget)); if (GTK_IS_LABEL (child)) title = gtk_label_get_text (GTK_LABEL (child)); } } if (title) gtk_window_set_title (GTK_WINDOW (priv->tearoff_window), title); } } static GtkWidget* gtk_menu_get_toplevel (GtkWidget *menu) { GtkWidget *attach, *toplevel; attach = gtk_menu_get_attach_widget (GTK_MENU (menu)); if (GTK_IS_MENU_ITEM (attach)) attach = gtk_widget_get_parent (attach); if (GTK_IS_MENU (attach)) return gtk_menu_get_toplevel (attach); else if (GTK_IS_WIDGET (attach)) { toplevel = gtk_widget_get_toplevel (attach); if (gtk_widget_is_toplevel (toplevel)) return toplevel; } return NULL; } static void tearoff_window_destroyed (GtkWidget *widget, GtkMenu *menu) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_menu_set_tearoff_state (menu, FALSE); G_GNUC_END_IGNORE_DEPRECATIONS; } /** * gtk_menu_set_tearoff_state: * @menu: a #GtkMenu * @torn_off: If %TRUE, menu is displayed as a tearoff menu. * * Changes the tearoff state of the menu. A menu is normally * displayed as drop down menu which persists as long as the menu is * active. It can also be displayed as a tearoff menu which persists * until it is closed or reattached. * * Deprecated: 3.10 */ void gtk_menu_set_tearoff_state (GtkMenu *menu, gboolean torn_off) { GtkMenuPrivate *priv = menu->priv; gint height; g_return_if_fail (GTK_IS_MENU (menu)); if (priv->torn_off != torn_off) { priv->torn_off = torn_off; priv->tearoff_active = torn_off; if (priv->torn_off) { if (gtk_widget_get_visible (GTK_WIDGET (menu))) gtk_menu_popdown (menu); if (!priv->tearoff_window) { GtkWidget *toplevel; priv->tearoff_window = g_object_new (GTK_TYPE_WINDOW, "type", GTK_WINDOW_TOPLEVEL, "screen", gtk_widget_get_screen (priv->toplevel), "app-paintable", TRUE, NULL); gtk_window_set_type_hint (GTK_WINDOW (priv->tearoff_window), GDK_WINDOW_TYPE_HINT_MENU); gtk_window_set_mnemonic_modifier (GTK_WINDOW (priv->tearoff_window), 0); g_signal_connect (priv->tearoff_window, "destroy", G_CALLBACK (tearoff_window_destroyed), menu); g_signal_connect (priv->tearoff_window, "event", G_CALLBACK (gtk_menu_window_event), menu); gtk_menu_update_title (menu); gtk_widget_realize (priv->tearoff_window); toplevel = gtk_menu_get_toplevel (GTK_WIDGET (menu)); if (toplevel != NULL) gtk_window_set_transient_for (GTK_WINDOW (priv->tearoff_window), GTK_WINDOW (toplevel)); priv->tearoff_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); gtk_container_add (GTK_CONTAINER (priv->tearoff_window), priv->tearoff_hbox); height = gdk_window_get_height (gtk_widget_get_window (GTK_WIDGET (menu))); priv->tearoff_adjustment = gtk_adjustment_new (0, 0, priv->requested_height, MENU_SCROLL_STEP2, height/2, height); g_object_connect (priv->tearoff_adjustment, "signal::value-changed", gtk_menu_scrollbar_changed, menu, NULL); priv->tearoff_scrollbar = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, priv->tearoff_adjustment); gtk_box_pack_end (GTK_BOX (priv->tearoff_hbox), priv->tearoff_scrollbar, FALSE, FALSE, 0); if (gtk_adjustment_get_upper (priv->tearoff_adjustment) > height) gtk_widget_show (priv->tearoff_scrollbar); gtk_widget_show (priv->tearoff_hbox); } gtk_menu_reparent (menu, priv->tearoff_hbox, FALSE); /* Update menu->requisition */ gtk_widget_get_preferred_size (GTK_WIDGET (menu), NULL, NULL); gtk_menu_set_tearoff_hints (menu, gdk_window_get_width (gtk_widget_get_window (GTK_WIDGET (menu)))); gtk_widget_realize (priv->tearoff_window); gtk_menu_position (menu, TRUE); gtk_widget_show (GTK_WIDGET (menu)); gtk_widget_show (priv->tearoff_window); gtk_menu_scroll_to (menu, 0); } else { gtk_widget_hide (GTK_WIDGET (menu)); gtk_widget_hide (priv->tearoff_window); if (GTK_IS_CONTAINER (priv->toplevel)) gtk_menu_reparent (menu, priv->toplevel, FALSE); gtk_widget_destroy (priv->tearoff_window); priv->tearoff_window = NULL; priv->tearoff_hbox = NULL; priv->tearoff_scrollbar = NULL; priv->tearoff_adjustment = NULL; } g_object_notify (G_OBJECT (menu), "tearoff-state"); } } /** * gtk_menu_get_tearoff_state: * @menu: a #GtkMenu * * Returns whether the menu is torn off. * See gtk_menu_set_tearoff_state(). * * Returns: %TRUE if the menu is currently torn off. * * Deprecated: 3.10 */ gboolean gtk_menu_get_tearoff_state (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), FALSE); return menu->priv->torn_off; } /** * gtk_menu_set_title: * @menu: a #GtkMenu * @title: a string containing the title for the menu * * Sets the title string for the menu. * * The title is displayed when the menu is shown as a tearoff * menu. If @title is %NULL, the menu will see if it is attached * to a parent menu item, and if so it will try to use the same * text as that menu item’s label. * * Deprecated: 3.10 */ void gtk_menu_set_title (GtkMenu *menu, const gchar *title) { GtkMenuPrivate *priv = menu->priv; char *old_title; g_return_if_fail (GTK_IS_MENU (menu)); old_title = priv->title; priv->title = g_strdup (title); g_free (old_title); gtk_menu_update_title (menu); g_object_notify (G_OBJECT (menu), "tearoff-title"); } /** * gtk_menu_get_title: * @menu: a #GtkMenu * * Returns the title of the menu. See gtk_menu_set_title(). * * Returns: the title of the menu, or %NULL if the menu * has no title set on it. This string is owned by GTK+ * and should not be modified or freed. * * Deprecated: 3.10 **/ const gchar * gtk_menu_get_title (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), NULL); return menu->priv->title; } /** * gtk_menu_reorder_child: * @menu: a #GtkMenu * @child: the #GtkMenuItem to move * @position: the new position to place @child. * Positions are numbered from 0 to n - 1 * * Moves @child to a new @position in the list of @menu * children. */ void gtk_menu_reorder_child (GtkMenu *menu, GtkWidget *child, gint position) { GtkMenuShell *menu_shell; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (GTK_IS_MENU_ITEM (child)); menu_shell = GTK_MENU_SHELL (menu); if (g_list_find (menu_shell->priv->children, child)) { menu_shell->priv->children = g_list_remove (menu_shell->priv->children, child); menu_shell->priv->children = g_list_insert (menu_shell->priv->children, child, position); menu_queue_resize (menu); } } static void get_arrows_border (GtkMenu *menu, GtkBorder *border) { GtkMenuPrivate *priv = menu->priv; guint scroll_arrow_height; GtkArrowPlacement arrow_placement; gtk_widget_style_get (GTK_WIDGET (menu), "scroll-arrow-vlength", &scroll_arrow_height, "arrow_placement", &arrow_placement, NULL); switch (arrow_placement) { case GTK_ARROWS_BOTH: border->top = priv->upper_arrow_visible ? scroll_arrow_height : 0; border->bottom = priv->lower_arrow_visible ? scroll_arrow_height : 0; break; case GTK_ARROWS_START: border->top = (priv->upper_arrow_visible || priv->lower_arrow_visible) ? scroll_arrow_height : 0; border->bottom = 0; break; case GTK_ARROWS_END: border->top = 0; border->bottom = (priv->upper_arrow_visible || priv->lower_arrow_visible) ? scroll_arrow_height : 0; break; } border->left = border->right = 0; } static void get_menu_padding (GtkWidget *widget, GtkBorder *padding) { GtkStyleContext *context; GtkStateFlags state; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, padding); } static void get_menu_margin (GtkWidget *widget, GtkBorder *margin) { GtkStyleContext *context; GtkStateFlags state; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_margin (context, state, margin); } static void gtk_menu_realize (GtkWidget *widget) { GtkMenu *menu = GTK_MENU (widget); GtkMenuPrivate *priv = menu->priv; GtkAllocation allocation; GdkWindow *window; GdkWindowAttr attributes; gint attributes_mask; gint border_width; GtkWidget *child; GList *children; GtkBorder arrow_border, padding; g_return_if_fail (GTK_IS_MENU (widget)); gtk_widget_set_realized (widget, TRUE); gtk_widget_get_allocation (widget, &allocation); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = allocation.x; attributes.y = allocation.y; attributes.width = allocation.width; attributes.height = allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.event_mask = gtk_widget_get_events (widget); attributes.event_mask |= (GDK_KEY_PRESS_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK ); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL; window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gtk_widget_set_window (widget, window); gtk_widget_register_window (widget, window); get_menu_padding (widget, &padding); border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); gtk_widget_get_allocation (widget, &allocation); attributes.x = border_width + padding.left; attributes.y = border_width + padding.top; attributes.width = allocation.width - (2 * border_width) - padding.left - padding.right; attributes.height = allocation.height - (2 * border_width) - padding.top - padding.bottom; get_arrows_border (menu, &arrow_border); attributes.y += arrow_border.top; attributes.height -= arrow_border.top; attributes.height -= arrow_border.bottom; attributes.width = MAX (1, attributes.width); attributes.height = MAX (1, attributes.height); priv->view_window = gdk_window_new (window, &attributes, attributes_mask); gtk_widget_register_window (widget, priv->view_window); gtk_widget_get_allocation (widget, &allocation); attributes.x = 0; attributes.y = - priv->scroll_offset; attributes.width = allocation.width + (2 * border_width) + padding.left + padding.right; attributes.height = priv->requested_height - (2 * border_width) + padding.top + padding.bottom; attributes.width = MAX (1, attributes.width); attributes.height = MAX (1, attributes.height); priv->bin_window = gdk_window_new (priv->view_window, &attributes, attributes_mask); gtk_widget_register_window (widget, priv->bin_window); children = GTK_MENU_SHELL (menu)->priv->children; while (children) { child = children->data; children = children->next; gtk_widget_set_parent_window (child, priv->bin_window); } if (GTK_MENU_SHELL (widget)->priv->active_menu_item) gtk_menu_scroll_item_visible (GTK_MENU_SHELL (widget), GTK_MENU_SHELL (widget)->priv->active_menu_item); gdk_window_show (priv->bin_window); gdk_window_show (priv->view_window); } static gboolean gtk_menu_focus (GtkWidget *widget, GtkDirectionType direction) { /* A menu or its menu items cannot have focus */ return FALSE; } /* See notes in gtk_menu_popup() for information * about the “grab transfer window” */ static GdkWindow * menu_grab_transfer_window_get (GtkMenu *menu) { GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window"); if (!window) { GdkWindowAttr attributes; gint attributes_mask; GdkWindow *parent; attributes.x = -100; attributes.y = -100; attributes.width = 10; attributes.height = 10; attributes.window_type = GDK_WINDOW_TEMP; attributes.wclass = GDK_INPUT_ONLY; attributes.override_redirect = TRUE; attributes.event_mask = 0; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR; parent = gdk_screen_get_root_window (gtk_widget_get_screen (GTK_WIDGET (menu))); window = gdk_window_new (parent, &attributes, attributes_mask); gtk_widget_register_window (GTK_WIDGET (menu), window); gdk_window_show (window); g_object_set_data (G_OBJECT (menu), I_("gtk-menu-transfer-window"), window); } return window; } static void menu_grab_transfer_window_destroy (GtkMenu *menu) { GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window"); if (window) { GdkWindow *widget_window; gtk_widget_unregister_window (GTK_WIDGET (menu), window); gdk_window_destroy (window); g_object_set_data (G_OBJECT (menu), I_("gtk-menu-transfer-window"), NULL); widget_window = gtk_widget_get_window (GTK_WIDGET (menu)); g_object_set_data (G_OBJECT (widget_window), I_("gdk-attached-grab-window"), window); } } static void gtk_menu_unrealize (GtkWidget *widget) { GtkMenu *menu = GTK_MENU (widget); GtkMenuPrivate *priv = menu->priv; menu_grab_transfer_window_destroy (menu); gtk_widget_unregister_window (widget, priv->view_window); gdk_window_destroy (priv->view_window); priv->view_window = NULL; gtk_widget_unregister_window (widget, priv->bin_window); gdk_window_destroy (priv->bin_window); priv->bin_window = NULL; GTK_WIDGET_CLASS (gtk_menu_parent_class)->unrealize (widget); } static gint calculate_line_heights (GtkMenu *menu, gint for_width, guint **ret_min_heights, guint **ret_nat_heights) { GtkBorder padding; GtkMenuPrivate *priv; GtkMenuShell *menu_shell; GtkWidget *child, *widget; GList *children; guint border_width; guint n_columns; gint n_heights; guint *min_heights; guint *nat_heights; gint avail_width; priv = menu->priv; widget = GTK_WIDGET (menu); menu_shell = GTK_MENU_SHELL (widget); min_heights = g_new0 (guint, gtk_menu_get_n_rows (menu)); nat_heights = g_new0 (guint, gtk_menu_get_n_rows (menu)); n_heights = gtk_menu_get_n_rows (menu); n_columns = gtk_menu_get_n_columns (menu); avail_width = for_width - (2 * priv->toggle_size + priv->accel_size) * n_columns; get_menu_padding (widget, &padding); border_width = gtk_container_get_border_width (GTK_CONTAINER (menu)); avail_width -= (border_width) * 2 + padding.left + padding.right; for (children = menu_shell->priv->children; children; children = children->next) { gint part; gint toggle_size; gint l, r, t, b; gint child_min, child_nat; child = children->data; if (!gtk_widget_get_visible (child)) continue; get_effective_child_attach (child, &l, &r, &t, &b); part = avail_width / (r - l); gtk_widget_get_preferred_height_for_width (child, part, &child_min, &child_nat); gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size); part = MAX (child_min, toggle_size) / (b - t); min_heights[t] = MAX (min_heights[t], part); part = MAX (child_nat, toggle_size) / (b - t); nat_heights[t] = MAX (nat_heights[t], part); } if (ret_min_heights) *ret_min_heights = min_heights; else g_free (min_heights); if (ret_nat_heights) *ret_nat_heights = nat_heights; else g_free (nat_heights); return n_heights; } static void gtk_menu_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkMenu *menu; GtkMenuPrivate *priv; GtkMenuShell *menu_shell; GtkWidget *child; GtkAllocation child_allocation; GList *children; gint x, y, i; gint width, height; guint border_width; GtkBorder padding; g_return_if_fail (GTK_IS_MENU (widget)); g_return_if_fail (allocation != NULL); menu = GTK_MENU (widget); menu_shell = GTK_MENU_SHELL (widget); priv = menu->priv; gtk_widget_set_allocation (widget, allocation); get_menu_padding (widget, &padding); border_width = gtk_container_get_border_width (GTK_CONTAINER (menu)); g_free (priv->heights); priv->heights_length = calculate_line_heights (menu, allocation->width, &priv->heights, NULL); /* refresh our cached height request */ priv->requested_height = (2 * border_width) + padding.top + padding.bottom; for (i = 0; i < priv->heights_length; i++) priv->requested_height += priv->heights[i]; x = border_width + padding.left; y = border_width + padding.top; width = allocation->width - (2 * border_width) - padding.left - padding.right; height = allocation->height - (2 * border_width) - padding.top - padding.bottom; if (menu_shell->priv->active) gtk_menu_scroll_to (menu, priv->scroll_offset); if (!priv->tearoff_active) { GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); y += arrow_border.top; height -= arrow_border.top; height -= arrow_border.bottom; } width = MAX (1, width); height = MAX (1, height); if (gtk_widget_get_realized (widget)) { gdk_window_move_resize (gtk_widget_get_window (widget), allocation->x, allocation->y, allocation->width, allocation->height); gdk_window_move_resize (priv->view_window, x, y, width, height); } if (menu_shell->priv->children) { gint base_width = width / gtk_menu_get_n_columns (menu); children = menu_shell->priv->children; while (children) { child = children->data; children = children->next; if (gtk_widget_get_visible (child)) { gint l, r, t, b; get_effective_child_attach (child, &l, &r, &t, &b); if (gtk_widget_get_direction (GTK_WIDGET (menu)) == GTK_TEXT_DIR_RTL) { guint tmp; tmp = gtk_menu_get_n_columns (menu) - l; l = gtk_menu_get_n_columns (menu) - r; r = tmp; } child_allocation.width = (r - l) * base_width; child_allocation.height = 0; child_allocation.x = l * base_width; child_allocation.y = 0; for (i = 0; i < b; i++) { if (i < t) child_allocation.y += priv->heights[i]; else child_allocation.height += priv->heights[i]; } gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), priv->toggle_size); gtk_widget_size_allocate (child, &child_allocation); gtk_widget_queue_draw (child); } } /* Resize the item window */ if (gtk_widget_get_realized (widget)) { gint w, h; h = 0; for (i = 0; i < gtk_menu_get_n_rows (menu); i++) h += priv->heights[i]; w = gtk_menu_get_n_columns (menu) * base_width; gdk_window_resize (priv->bin_window, w, h); } if (priv->tearoff_active) { if (height >= priv->requested_height) { if (gtk_widget_get_visible (priv->tearoff_scrollbar)) { gtk_widget_hide (priv->tearoff_scrollbar); gtk_menu_set_tearoff_hints (menu, allocation->width); gtk_menu_scroll_to (menu, 0); } } else { gtk_adjustment_configure (priv->tearoff_adjustment, gtk_adjustment_get_value (priv->tearoff_adjustment), 0, priv->requested_height, gtk_adjustment_get_step_increment (priv->tearoff_adjustment), gtk_adjustment_get_page_increment (priv->tearoff_adjustment), allocation->height); if (!gtk_widget_get_visible (priv->tearoff_scrollbar)) { gtk_widget_show (priv->tearoff_scrollbar); gtk_menu_set_tearoff_hints (menu, allocation->width); } } } } } static void get_arrows_visible_area (GtkMenu *menu, GdkRectangle *border, GdkRectangle *upper, GdkRectangle *lower, gint *arrow_space) { GtkArrowPlacement arrow_placement; GtkWidget *widget = GTK_WIDGET (menu); guint border_width; gint scroll_arrow_height; GtkBorder menu_padding; gtk_widget_style_get (widget, "scroll-arrow-vlength", &scroll_arrow_height, "arrow-placement", &arrow_placement, NULL); get_menu_padding (widget, &menu_padding); border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); border->x = border_width + menu_padding.left; border->y = border_width + menu_padding.top; border->width = gdk_window_get_width (gtk_widget_get_window (widget)) - 2 * border_width - menu_padding.left - menu_padding.right; border->height = gdk_window_get_height (gtk_widget_get_window (widget)) - 2 * border_width - menu_padding.top - menu_padding.bottom; switch (arrow_placement) { case GTK_ARROWS_BOTH: upper->x = border->x; upper->y = border->y; upper->width = border->width; upper->height = scroll_arrow_height; lower->x = border->x; lower->y = border->height - border->y - scroll_arrow_height; lower->width = border->width; lower->height = scroll_arrow_height; break; case GTK_ARROWS_START: upper->x = border->x; upper->y = border->y; upper->width = border->width / 2; upper->height = scroll_arrow_height; lower->x = border->x + upper->width; lower->y = border->y; lower->width = border->width - upper->width; lower->height = scroll_arrow_height; break; case GTK_ARROWS_END: upper->x = border->x; upper->y = border->height - scroll_arrow_height; upper->width = border->width / 2; upper->height = scroll_arrow_height; lower->x = border->x + upper->width; lower->y = border->height - scroll_arrow_height; lower->width = border->width - upper->width; lower->height = scroll_arrow_height; break; default: g_assert_not_reached(); upper->x = upper->y = upper->width = upper->height = 0; lower->x = lower->y = lower->width = lower->height = 0; } *arrow_space = scroll_arrow_height; } static gboolean gtk_menu_draw (GtkWidget *widget, cairo_t *cr) { GtkMenu *menu; GtkMenuPrivate *priv; GtkStyleContext *context; GdkRectangle border; GdkRectangle upper; GdkRectangle lower; gint arrow_space; GtkBorder menu_padding; menu = GTK_MENU (widget); priv = menu->priv; context = gtk_widget_get_style_context (widget); get_arrows_visible_area (menu, &border, &upper, &lower, &arrow_space); get_menu_padding (widget, &menu_padding); if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget))) { gfloat arrow_scaling; gint arrow_size; gtk_widget_style_get (widget, "arrow-scaling", &arrow_scaling, NULL); arrow_size = arrow_scaling * arrow_space; gtk_render_background (context, cr, 0, 0, gtk_widget_get_allocated_width (widget), gtk_widget_get_allocated_height (widget)); gtk_render_frame (context, cr, 0, 0, gtk_widget_get_allocated_width (widget), gtk_widget_get_allocated_height (widget)); gtk_style_context_save (context); gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON); if (priv->upper_arrow_visible && !priv->tearoff_active) { gtk_style_context_save (context); gtk_style_context_set_state (context, priv->upper_arrow_state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP); gtk_render_background (context, cr, upper.x, upper.y, upper.width, upper.height); gtk_render_frame (context, cr, upper.x, upper.y, upper.width, upper.height); gtk_render_arrow (context, cr, 0, upper.x + (upper.width - arrow_size) / 2, upper.y + menu_padding.top + (arrow_space - arrow_size) / 2, arrow_size); gtk_style_context_restore (context); } if (priv->lower_arrow_visible && !priv->tearoff_active) { gtk_style_context_save (context); gtk_style_context_set_state (context, priv->lower_arrow_state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM); gtk_render_background (context, cr, lower.x, lower.y, lower.width, lower.height); gtk_render_frame (context, cr, lower.x, lower.y, lower.width, lower.height); gtk_render_arrow (context, cr, G_PI, lower.x + (lower.width - arrow_size) / 2, lower.y + menu_padding.bottom + (arrow_space - arrow_size) / 2, arrow_size); gtk_style_context_restore (context); } gtk_style_context_restore (context); } if (gtk_cairo_should_draw_window (cr, priv->bin_window)) { gint y = -border.y + priv->scroll_offset; cairo_save (cr); gtk_cairo_transform_to_window (cr, widget, priv->bin_window); if (!priv->tearoff_active) { GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); y -= arrow_border.top; } gtk_render_background (context, cr, - border.x, y, border.width, border.height); gtk_render_frame (context, cr, - border.x, y, border.width, border.height); cairo_restore (cr); } GTK_WIDGET_CLASS (gtk_menu_parent_class)->draw (widget, cr); return FALSE; } static void gtk_menu_show (GtkWidget *widget) { GtkMenu *menu = GTK_MENU (widget); _gtk_menu_refresh_accel_paths (menu, FALSE); GTK_WIDGET_CLASS (gtk_menu_parent_class)->show (widget); } static void gtk_menu_get_preferred_width (GtkWidget *widget, gint *minimum_size, gint *natural_size) { GtkMenu *menu; GtkMenuShell *menu_shell; GtkMenuPrivate *priv; GtkWidget *child; GList *children; guint max_toggle_size; guint max_accel_width; guint border_width; gint child_min, child_nat; gint min_width, nat_width; GtkBorder padding; menu = GTK_MENU (widget); menu_shell = GTK_MENU_SHELL (widget); priv = menu->priv; min_width = nat_width = 0; max_toggle_size = 0; max_accel_width = 0; children = menu_shell->priv->children; while (children) { gint part; gint toggle_size; gint l, r, t, b; child = children->data; children = children->next; if (! gtk_widget_get_visible (child)) continue; get_effective_child_attach (child, &l, &r, &t, &b); /* It's important to size_request the child * before doing the toggle size request, in * case the toggle size request depends on the size * request of a child of the child (e.g. for ImageMenuItem) */ gtk_widget_get_preferred_width (child, &child_min, &child_nat); gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size); max_toggle_size = MAX (max_toggle_size, toggle_size); max_accel_width = MAX (max_accel_width, GTK_MENU_ITEM (child)->priv->accelerator_width); part = child_min / (r - l); min_width = MAX (min_width, part); part = child_nat / (r - l); nat_width = MAX (nat_width, part); } /* If the menu doesn't include any images or check items * reserve the space so that all menus are consistent. * We only do this for 'ordinary' menus, not for combobox * menus or multi-column menus */ if (max_toggle_size == 0 && gtk_menu_get_n_columns (menu) == 1 && !priv->no_toggle_size) { GtkStyleContext *context; GtkWidgetPath *check_path; guint toggle_spacing; guint indicator_size; context = gtk_style_context_new (); /* Create a GtkCheckMenuItem path, only to query indicator spacing */ check_path = _gtk_widget_create_path (widget); gtk_widget_path_append_type (check_path, GTK_TYPE_CHECK_MENU_ITEM); gtk_style_context_set_path (context, check_path); gtk_widget_path_free (check_path); gtk_style_context_set_screen (context, gtk_widget_get_screen (widget)); gtk_style_context_get_style (context, "toggle-spacing", &toggle_spacing, "indicator-size", &indicator_size, NULL); max_toggle_size = indicator_size + toggle_spacing; g_object_unref (context); } min_width += 2 * max_toggle_size + max_accel_width; min_width *= gtk_menu_get_n_columns (menu); nat_width += 2 * max_toggle_size + max_accel_width; nat_width *= gtk_menu_get_n_columns (menu); get_menu_padding (widget, &padding); border_width = gtk_container_get_border_width (GTK_CONTAINER (menu)); min_width += (2 * border_width) + padding.left + padding.right; nat_width += (2 * border_width) + padding.left + padding.right; priv->toggle_size = max_toggle_size; priv->accel_size = max_accel_width; *minimum_size = min_width; *natural_size = nat_width; /* Don't resize the tearoff if it is not active, * because it won't redraw (it is only a background pixmap). */ if (priv->tearoff_active) gtk_menu_set_tearoff_hints (menu, min_width); } static void gtk_menu_get_preferred_height (GtkWidget *widget, gint *minimum_size, gint *natural_size) { gint min_width, nat_width; /* Menus are height-for-width only, just return the height * for the minimum width */ GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, &nat_width); GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_width, minimum_size, natural_size); } static void gtk_menu_get_preferred_height_for_width (GtkWidget *widget, gint for_size, gint *minimum_size, gint *natural_size) { GtkBorder padding, arrow_border; GtkMenu *menu = GTK_MENU (widget); GtkMenuPrivate *priv = menu->priv; guint *min_heights, *nat_heights; guint border_width; gint n_heights, i; gint min_height, single_height, nat_height; border_width = gtk_container_get_border_width (GTK_CONTAINER (menu)); get_menu_padding (widget, &padding); min_height = nat_height = (2 * border_width) + padding.top + padding.bottom; single_height = 0; n_heights = calculate_line_heights (menu, for_size, &min_heights, &nat_heights); for (i = 0; i < n_heights; i++) { min_height += min_heights[i]; single_height = MAX (single_height, min_heights[i]); nat_height += nat_heights[i]; } get_arrows_border (menu, &arrow_border); single_height += (2 * border_width) + padding.top + padding.bottom + arrow_border.top + arrow_border.bottom; min_height = MIN (min_height, single_height); if (priv->have_position) { GdkScreen *screen = gtk_widget_get_screen (priv->toplevel); GdkRectangle monitor; GtkBorder border; gdk_screen_get_monitor_workarea (screen, priv->monitor_num, &monitor); if (priv->position_y + min_height > monitor.y + monitor.height) min_height = monitor.y + monitor.height - priv->position_y; if (priv->position_y + nat_height > monitor.y + monitor.height) nat_height = monitor.y + monitor.height - priv->position_y; _gtk_window_get_shadow_width (GTK_WINDOW (priv->toplevel), &border); if (priv->position_y + border.top < monitor.y) { min_height -= monitor.y - (priv->position_y + border.top); nat_height -= monitor.y - (priv->position_y + border.top); } } *minimum_size = min_height; *natural_size = nat_height; g_free (min_heights); g_free (nat_heights); } static gboolean pointer_in_menu_window (GtkWidget *widget, gdouble x_root, gdouble y_root) { GtkMenu *menu = GTK_MENU (widget); GtkMenuPrivate *priv = menu->priv; GtkAllocation allocation; if (gtk_widget_get_mapped (priv->toplevel)) { GtkMenuShell *menu_shell; gint window_x, window_y; gdk_window_get_position (gtk_widget_get_window (priv->toplevel), &window_x, &window_y); gtk_widget_get_allocation (widget, &allocation); if (x_root >= window_x && x_root < window_x + allocation.width && y_root >= window_y && y_root < window_y + allocation.height) return TRUE; menu_shell = GTK_MENU_SHELL (widget); if (GTK_IS_MENU (menu_shell->priv->parent_menu_shell)) return pointer_in_menu_window (menu_shell->priv->parent_menu_shell, x_root, y_root); } return FALSE; } static gboolean gtk_menu_button_press (GtkWidget *widget, GdkEventButton *event) { GdkDevice *source_device; GtkWidget *event_widget; GtkMenu *menu; if (event->type != GDK_BUTTON_PRESS) return FALSE; source_device = gdk_event_get_source_device ((GdkEvent *) event); event_widget = gtk_get_event_widget ((GdkEvent *) event); menu = GTK_MENU (widget); /* Don't pass down to menu shell if a non-menuitem part of the menu * was clicked. The check for the event_widget being a GtkMenuShell * works because we have the pointer grabbed on menu_shell->window * with owner_events=TRUE, so all events that are either outside * the menu or on its border are delivered relative to * menu_shell->window. */ if (GTK_IS_MENU_SHELL (event_widget) && pointer_in_menu_window (widget, event->x_root, event->y_root)) return TRUE; if (GTK_IS_MENU_ITEM (event_widget) && gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN && GTK_MENU_ITEM (event_widget)->priv->submenu != NULL && !gtk_widget_is_drawable (GTK_MENU_ITEM (event_widget)->priv->submenu)) menu->priv->ignore_button_release = TRUE; return GTK_WIDGET_CLASS (gtk_menu_parent_class)->button_press_event (widget, event); } static gboolean gtk_menu_button_release (GtkWidget *widget, GdkEventButton *event) { GtkMenuPrivate *priv = GTK_MENU (widget)->priv; if (priv->ignore_button_release) { priv->ignore_button_release = FALSE; return FALSE; } if (event->type != GDK_BUTTON_RELEASE) return FALSE; /* Don't pass down to menu shell if a non-menuitem part of the menu * was clicked (see comment in button_press()). */ if (GTK_IS_MENU_SHELL (gtk_get_event_widget ((GdkEvent *) event)) && pointer_in_menu_window (widget, event->x_root, event->y_root)) { /* Ugly: make sure menu_shell->button gets reset to 0 when we * bail out early here so it is in a consistent state for the * next button_press/button_release in GtkMenuShell. * See bug #449371. */ if (GTK_MENU_SHELL (widget)->priv->active) GTK_MENU_SHELL (widget)->priv->button = 0; return TRUE; } return GTK_WIDGET_CLASS (gtk_menu_parent_class)->button_release_event (widget, event); } static gboolean gtk_menu_key_press (GtkWidget *widget, GdkEventKey *event) { GtkMenu *menu; g_return_val_if_fail (GTK_IS_MENU (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); menu = GTK_MENU (widget); gtk_menu_stop_navigating_submenu (menu); return GTK_WIDGET_CLASS (gtk_menu_parent_class)->key_press_event (widget, event); } static gboolean check_threshold (GtkWidget *widget, gint start_x, gint start_y, gint x, gint y) { #define THRESHOLD 8 return ABS (start_x - x) > THRESHOLD || ABS (start_y - y) > THRESHOLD; } static gboolean definitely_within_item (GtkWidget *widget, gint x, gint y) { GdkWindow *window = GTK_MENU_ITEM (widget)->priv->event_window; int w, h; w = gdk_window_get_width (window); h = gdk_window_get_height (window); return check_threshold (widget, 0, 0, x, y) && check_threshold (widget, w - 1, 0, x, y) && check_threshold (widget, w - 1, h - 1, x, y) && check_threshold (widget, 0, h - 1, x, y); } static gboolean gtk_menu_has_navigation_triangle (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; return priv->navigation_height && priv->navigation_width; } static gboolean gtk_menu_motion_notify (GtkWidget *widget, GdkEventMotion *event) { GtkWidget *menu_item; GtkMenu *menu; GtkMenuShell *menu_shell; GtkWidget *parent; GdkDevice *source_device; gboolean need_enter; source_device = gdk_event_get_source_device ((GdkEvent *) event); if (GTK_IS_MENU (widget) && gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) { GtkMenuPrivate *priv = GTK_MENU(widget)->priv; if (priv->ignore_button_release) priv->ignore_button_release = FALSE; gtk_menu_handle_scrolling (GTK_MENU (widget), event->x_root, event->y_root, TRUE, TRUE); } /* We received the event for one of two reasons: * * a) We are the active menu, and did gtk_grab_add() * b) The widget is a child of ours, and the event was propagated * * Since for computation of navigation regions, we want the menu which * is the parent of the menu item, for a), we need to find that menu, * which may be different from 'widget'. */ menu_item = gtk_get_event_widget ((GdkEvent*) event); parent = gtk_widget_get_parent (menu_item); if (!GTK_IS_MENU_ITEM (menu_item) || !GTK_IS_MENU (parent)) return FALSE; menu_shell = GTK_MENU_SHELL (parent); menu = GTK_MENU (menu_shell); if (definitely_within_item (menu_item, event->x, event->y)) menu_shell->priv->activate_time = 0; need_enter = (gtk_menu_has_navigation_triangle (menu) || menu_shell->priv->ignore_enter); /* Check to see if we are within an active submenu's navigation region */ if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root)) return TRUE; /* Make sure we pop down if we enter a non-selectable menu item, so we * don't show a submenu when the cursor is outside the stay-up triangle. */ if (!_gtk_menu_item_is_selectable (menu_item)) { /* We really want to deselect, but this gives the menushell code * a chance to do some bookkeeping about the menuitem. */ gtk_menu_shell_select_item (menu_shell, menu_item); return FALSE; } if (need_enter) { /* The menu is now sensitive to enter events on its items, but * was previously sensitive. So we fake an enter event. */ menu_shell->priv->ignore_enter = FALSE; if (event->x >= 0 && event->x < gdk_window_get_width (event->window) && event->y >= 0 && event->y < gdk_window_get_height (event->window)) { GdkEvent *send_event = gdk_event_new (GDK_ENTER_NOTIFY); gboolean result; send_event->crossing.window = g_object_ref (event->window); send_event->crossing.time = event->time; send_event->crossing.send_event = TRUE; send_event->crossing.x_root = event->x_root; send_event->crossing.y_root = event->y_root; send_event->crossing.x = event->x; send_event->crossing.y = event->y; send_event->crossing.state = event->state; gdk_event_set_device (send_event, gdk_event_get_device ((GdkEvent *) event)); /* We send the event to 'widget', the currently active menu, * instead of 'menu', the menu that the pointer is in. This * will ensure that the event will be ignored unless the * menuitem is a child of the active menu or some parent * menu of the active menu. */ result = gtk_widget_event (widget, send_event); gdk_event_free (send_event); return result; } } return FALSE; } static gboolean get_double_arrows (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; gboolean double_arrows; GtkArrowPlacement arrow_placement; gtk_widget_style_get (GTK_WIDGET (menu), "double-arrows", &double_arrows, "arrow-placement", &arrow_placement, NULL); if (arrow_placement != GTK_ARROWS_BOTH) return TRUE; return double_arrows || (priv->initially_pushed_in && priv->scroll_offset != 0); } static void gtk_menu_scroll_by (GtkMenu *menu, gint step) { GtkMenuPrivate *priv = menu->priv; GtkBorder arrow_border; GtkWidget *widget; gint offset; gint view_height; gboolean double_arrows; widget = GTK_WIDGET (menu); offset = priv->scroll_offset + step; get_arrows_border (menu, &arrow_border); double_arrows = get_double_arrows (menu); /* If we scroll upward and the non-visible top part * is smaller than the scroll arrow it would be * pretty stupid to show the arrow and taking more * screen space than just scrolling to the top. */ if (!double_arrows) if ((step < 0) && (offset < arrow_border.top)) offset = 0; /* Don't scroll over the top if we weren't before: */ if ((priv->scroll_offset >= 0) && (offset < 0)) offset = 0; view_height = gdk_window_get_height (gtk_widget_get_window (widget)); if (priv->scroll_offset == 0 && view_height >= priv->requested_height) return; /* Don't scroll past the bottom if we weren't before: */ if (priv->scroll_offset > 0) view_height -= arrow_border.top; /* When both arrows are always shown, * reduce view height even more. */ if (double_arrows) view_height -= arrow_border.bottom; if ((priv->scroll_offset + view_height <= priv->requested_height) && (offset + view_height > priv->requested_height)) offset = priv->requested_height - view_height; if (offset != priv->scroll_offset) gtk_menu_scroll_to (menu, offset); } static gboolean gtk_menu_scroll_timeout (gpointer data) { GtkMenu *menu; menu = GTK_MENU (data); gtk_menu_scroll_by (menu, menu->priv->scroll_step); return TRUE; } static gboolean gtk_menu_scroll (GtkWidget *widget, GdkEventScroll *event) { GtkMenu *menu = GTK_MENU (widget); switch (event->direction) { case GDK_SCROLL_RIGHT: case GDK_SCROLL_DOWN: gtk_menu_scroll_by (menu, MENU_SCROLL_STEP2); break; case GDK_SCROLL_LEFT: case GDK_SCROLL_UP: gtk_menu_scroll_by (menu, - MENU_SCROLL_STEP2); break; case GDK_SCROLL_SMOOTH: gtk_menu_scroll_by (menu, event->delta_y); break; } return TRUE; } static void get_arrows_sensitive_area (GtkMenu *menu, GdkRectangle *upper, GdkRectangle *lower) { GtkArrowPlacement arrow_placement; GtkWidget *widget = GTK_WIDGET (menu); GdkWindow *window; gint width, height; guint border; gint win_x, win_y; gint scroll_arrow_height; GtkBorder padding; window = gtk_widget_get_window (widget); width = gdk_window_get_width (window); height = gdk_window_get_height (window); gtk_widget_style_get (widget, "scroll-arrow-vlength", &scroll_arrow_height, "arrow-placement", &arrow_placement, NULL); border = gtk_container_get_border_width (GTK_CONTAINER (menu)); get_menu_padding (widget, &padding); gdk_window_get_position (window, &win_x, &win_y); switch (arrow_placement) { case GTK_ARROWS_BOTH: if (upper) { upper->x = win_x; upper->y = win_y; upper->width = width; upper->height = scroll_arrow_height + border + padding.top; } if (lower) { lower->x = win_x; lower->y = win_y + height - border - padding.bottom - scroll_arrow_height; lower->width = width; lower->height = scroll_arrow_height + border + padding.bottom; } break; case GTK_ARROWS_START: if (upper) { upper->x = win_x; upper->y = win_y; upper->width = width / 2; upper->height = scroll_arrow_height + border + padding.top; } if (lower) { lower->x = win_x + width / 2; lower->y = win_y; lower->width = width / 2; lower->height = scroll_arrow_height + border + padding.bottom; } break; case GTK_ARROWS_END: if (upper) { upper->x = win_x; upper->y = win_y + height - border - scroll_arrow_height; upper->width = width / 2; upper->height = scroll_arrow_height + border + padding.top; } if (lower) { lower->x = win_x + width / 2; lower->y = win_y + height - border - scroll_arrow_height; lower->width = width / 2; lower->height = scroll_arrow_height + border + padding.bottom; } break; } } static void gtk_menu_handle_scrolling (GtkMenu *menu, gint x, gint y, gboolean enter, gboolean motion) { GtkMenuPrivate *priv = menu->priv; GtkMenuShell *menu_shell; GdkRectangle rect; gboolean in_arrow; gboolean scroll_fast = FALSE; gint top_x, top_y; menu_shell = GTK_MENU_SHELL (menu); gdk_window_get_position (gtk_widget_get_window (priv->toplevel), &top_x, &top_y); x -= top_x; y -= top_y; /* upper arrow handling */ get_arrows_sensitive_area (menu, &rect, NULL); in_arrow = FALSE; if (priv->upper_arrow_visible && !priv->tearoff_active && (x >= rect.x) && (x < rect.x + rect.width) && (y >= rect.y) && (y < rect.y + rect.height)) { in_arrow = TRUE; } if ((priv->upper_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0) { gboolean arrow_pressed = FALSE; if (priv->upper_arrow_visible && !priv->tearoff_active) { scroll_fast = (y < rect.y + MENU_SCROLL_FAST_ZONE); if (enter && in_arrow && (!priv->upper_arrow_prelight || priv->scroll_fast != scroll_fast)) { priv->upper_arrow_prelight = TRUE; priv->scroll_fast = scroll_fast; /* Deselect the active item so that * any submenus are popped down */ gtk_menu_shell_deselect (menu_shell); gtk_menu_remove_scroll_timeout (menu); priv->scroll_step = scroll_fast ? -MENU_SCROLL_STEP2 : -MENU_SCROLL_STEP1; priv->scroll_timeout = gdk_threads_add_timeout (scroll_fast ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1, gtk_menu_scroll_timeout, menu); g_source_set_name_by_id (priv->scroll_timeout, "[gtk+] gtk_menu_scroll_timeout"); } else if (!enter && !in_arrow && priv->upper_arrow_prelight) { gtk_menu_stop_scrolling (menu); } } /* check if the button isn't insensitive before * changing it to something else. */ if ((priv->upper_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0) { GtkStateFlags arrow_state = 0; if (arrow_pressed) arrow_state |= GTK_STATE_FLAG_ACTIVE; if (priv->upper_arrow_prelight) arrow_state |= GTK_STATE_FLAG_PRELIGHT; if (arrow_state != priv->upper_arrow_state) { priv->upper_arrow_state = arrow_state; gdk_window_invalidate_rect (gtk_widget_get_window (GTK_WIDGET (menu)), &rect, FALSE); } } } /* lower arrow handling */ get_arrows_sensitive_area (menu, NULL, &rect); in_arrow = FALSE; if (priv->lower_arrow_visible && !priv->tearoff_active && (x >= rect.x) && (x < rect.x + rect.width) && (y >= rect.y) && (y < rect.y + rect.height)) { in_arrow = TRUE; } if ((priv->lower_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0) { gboolean arrow_pressed = FALSE; if (priv->lower_arrow_visible && !priv->tearoff_active) { scroll_fast = (y > rect.y + rect.height - MENU_SCROLL_FAST_ZONE); if (enter && in_arrow && (!priv->lower_arrow_prelight || priv->scroll_fast != scroll_fast)) { priv->lower_arrow_prelight = TRUE; priv->scroll_fast = scroll_fast; /* Deselect the active item so that * any submenus are popped down */ gtk_menu_shell_deselect (menu_shell); gtk_menu_remove_scroll_timeout (menu); priv->scroll_step = scroll_fast ? MENU_SCROLL_STEP2 : MENU_SCROLL_STEP1; priv->scroll_timeout = gdk_threads_add_timeout (scroll_fast ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1, gtk_menu_scroll_timeout, menu); g_source_set_name_by_id (priv->scroll_timeout, "[gtk+] gtk_menu_scroll_timeout"); } else if (!enter && !in_arrow && priv->lower_arrow_prelight) { gtk_menu_stop_scrolling (menu); } } /* check if the button isn't insensitive before * changing it to something else. */ if ((priv->lower_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0) { GtkStateFlags arrow_state = 0; if (arrow_pressed) arrow_state |= GTK_STATE_FLAG_ACTIVE; if (priv->lower_arrow_prelight) arrow_state |= GTK_STATE_FLAG_PRELIGHT; if (arrow_state != priv->lower_arrow_state) { priv->lower_arrow_state = arrow_state; gdk_window_invalidate_rect (gtk_widget_get_window (GTK_WIDGET (menu)), &rect, FALSE); } } } } static gboolean gtk_menu_enter_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkWidget *menu_item; GtkWidget *parent; GdkDevice *source_device; if (event->mode == GDK_CROSSING_GTK_GRAB || event->mode == GDK_CROSSING_GTK_UNGRAB || event->mode == GDK_CROSSING_STATE_CHANGED) return TRUE; source_device = gdk_event_get_source_device ((GdkEvent *) event); menu_item = gtk_get_event_widget ((GdkEvent*) event); if (GTK_IS_MENU (widget) && gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); if (!menu_shell->priv->ignore_enter) gtk_menu_handle_scrolling (GTK_MENU (widget), event->x_root, event->y_root, TRUE, TRUE); } if (gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN && GTK_IS_MENU_ITEM (menu_item)) { GtkWidget *menu = gtk_widget_get_parent (menu_item); if (GTK_IS_MENU (menu)) { GtkMenuPrivate *priv = (GTK_MENU (menu))->priv; GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu); if (priv->seen_item_enter) { /* This is the second enter we see for an item * on this menu. This means a release should always * mean activate. */ menu_shell->priv->activate_time = 0; } else if ((event->detail != GDK_NOTIFY_NONLINEAR && event->detail != GDK_NOTIFY_NONLINEAR_VIRTUAL)) { if (definitely_within_item (menu_item, event->x, event->y)) { /* This is an actual user-enter (ie. not a pop-under) * In this case, the user must either have entered * sufficiently far enough into the item, or he must move * far enough away from the enter point. (see * gtk_menu_motion_notify()) */ menu_shell->priv->activate_time = 0; } } priv->seen_item_enter = TRUE; } } /* If this is a faked enter (see gtk_menu_motion_notify), 'widget' * will not correspond to the event widget's parent. Check to see * if we are in the parent's navigation region. */ parent = gtk_widget_get_parent (menu_item); if (GTK_IS_MENU_ITEM (menu_item) && GTK_IS_MENU (parent) && gtk_menu_navigating_submenu (GTK_MENU (parent), event->x_root, event->y_root)) return TRUE; return GTK_WIDGET_CLASS (gtk_menu_parent_class)->enter_notify_event (widget, event); } static gboolean gtk_menu_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkMenuShell *menu_shell; GtkMenu *menu; GtkMenuItem *menu_item; GtkWidget *event_widget; GdkDevice *source_device; if (event->mode == GDK_CROSSING_GTK_GRAB || event->mode == GDK_CROSSING_GTK_UNGRAB || event->mode == GDK_CROSSING_STATE_CHANGED) return TRUE; menu = GTK_MENU (widget); menu_shell = GTK_MENU_SHELL (widget); if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root)) return TRUE; source_device = gdk_event_get_source_device ((GdkEvent *) event); if (gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) gtk_menu_handle_scrolling (menu, event->x_root, event->y_root, FALSE, TRUE); event_widget = gtk_get_event_widget ((GdkEvent*) event); if (!GTK_IS_MENU_ITEM (event_widget)) return TRUE; menu_item = GTK_MENU_ITEM (event_widget); /* Here we check to see if we're leaving an active menu item * with a submenu, in which case we enter submenu navigation mode. */ if (menu_shell->priv->active_menu_item != NULL && menu_item->priv->submenu != NULL && menu_item->priv->submenu_placement == GTK_LEFT_RIGHT) { if (GTK_MENU_SHELL (menu_item->priv->submenu)->priv->active) { gtk_menu_set_submenu_navigation_region (menu, menu_item, event); return TRUE; } else if (menu_item == GTK_MENU_ITEM (menu_shell->priv->active_menu_item)) { /* We are leaving an active menu item with nonactive submenu. * Deselect it so we don't surprise the user with by popping * up a submenu _after_ he left the item. */ gtk_menu_shell_deselect (menu_shell); return TRUE; } } return GTK_WIDGET_CLASS (gtk_menu_parent_class)->leave_notify_event (widget, event); } static gboolean pointer_on_menu_widget (GtkMenu *menu, gdouble x_root, gdouble y_root) { GtkMenuPrivate *priv = menu->priv; GtkAllocation allocation; gint window_x, window_y; gtk_widget_get_allocation (GTK_WIDGET (menu), &allocation); gdk_window_get_position (gtk_widget_get_window (priv->toplevel), &window_x, &window_y); if (x_root >= window_x && x_root < window_x + allocation.width && y_root >= window_y && y_root < window_y + allocation.height) return TRUE; return FALSE; } static gboolean gtk_menu_captured_event (GtkWidget *widget, GdkEvent *event) { GdkDevice *source_device; gboolean retval = FALSE; GtkMenuPrivate *priv; GtkMenu *menu; gdouble x_root, y_root; guint button; GdkModifierType state; menu = GTK_MENU (widget); priv = menu->priv; if (!priv->upper_arrow_visible && !priv->lower_arrow_visible && priv->drag_start_y < 0) return retval; source_device = gdk_event_get_source_device (event); gdk_event_get_root_coords (event, &x_root, &y_root); switch (event->type) { case GDK_TOUCH_BEGIN: case GDK_BUTTON_PRESS: if ((!gdk_event_get_button (event, &button) || button == 1) && gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN && pointer_on_menu_widget (menu, x_root, y_root)) { priv->drag_start_y = event->button.y_root; priv->initial_drag_offset = priv->scroll_offset; priv->drag_scroll_started = FALSE; } else priv->drag_start_y = -1; priv->drag_already_pressed = TRUE; break; case GDK_TOUCH_END: case GDK_BUTTON_RELEASE: if (priv->drag_scroll_started) { priv->drag_scroll_started = FALSE; priv->drag_start_y = -1; priv->drag_already_pressed = FALSE; retval = TRUE; } break; case GDK_TOUCH_UPDATE: case GDK_MOTION_NOTIFY: if ((!gdk_event_get_state (event, &state) || (state & GDK_BUTTON1_MASK) != 0) && gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN) { if (!priv->drag_already_pressed) { if (pointer_on_menu_widget (menu, x_root, y_root)) { priv->drag_start_y = y_root; priv->initial_drag_offset = priv->scroll_offset; priv->drag_scroll_started = FALSE; } else priv->drag_start_y = -1; priv->drag_already_pressed = TRUE; } if (priv->drag_start_y < 0 && !priv->drag_scroll_started) break; if (priv->drag_scroll_started) { gint offset, view_height; GtkBorder arrow_border; gdouble y_diff; y_diff = y_root - priv->drag_start_y; offset = priv->initial_drag_offset - y_diff; view_height = gdk_window_get_height (gtk_widget_get_window (widget)); get_arrows_border (menu, &arrow_border); if (priv->upper_arrow_visible) view_height -= arrow_border.top; if (priv->lower_arrow_visible) view_height -= arrow_border.bottom; offset = CLAMP (offset, MIN (priv->scroll_offset, 0), MAX (priv->scroll_offset, priv->requested_height - view_height)); gtk_menu_scroll_to (menu, offset); retval = TRUE; } else if (gtk_drag_check_threshold (widget, 0, priv->drag_start_y, 0, y_root)) { priv->drag_scroll_started = TRUE; gtk_menu_shell_deselect (GTK_MENU_SHELL (menu)); retval = TRUE; } } break; case GDK_ENTER_NOTIFY: case GDK_LEAVE_NOTIFY: if (priv->drag_scroll_started) retval = TRUE; break; default: break; } return retval; } static void gtk_menu_stop_navigating_submenu (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; priv->navigation_x = 0; priv->navigation_y = 0; priv->navigation_width = 0; priv->navigation_height = 0; if (priv->navigation_timeout) { g_source_remove (priv->navigation_timeout); priv->navigation_timeout = 0; } } /* When the timeout is elapsed, the navigation region is destroyed * and the menuitem under the pointer (if any) is selected. */ static gboolean gtk_menu_stop_navigating_submenu_cb (gpointer user_data) { GtkMenuPopdownData *popdown_data = user_data; GtkMenu *menu = popdown_data->menu; GtkMenuPrivate *priv = menu->priv; GdkWindow *child_window; gtk_menu_stop_navigating_submenu (menu); if (gtk_widget_get_realized (GTK_WIDGET (menu))) { child_window = gdk_window_get_device_position (priv->bin_window, popdown_data->device, NULL, NULL, NULL); if (child_window) { GdkEvent *send_event = gdk_event_new (GDK_ENTER_NOTIFY); send_event->crossing.window = g_object_ref (child_window); send_event->crossing.time = GDK_CURRENT_TIME; /* Bogus */ send_event->crossing.send_event = TRUE; gdk_event_set_device (send_event, popdown_data->device); GTK_WIDGET_CLASS (gtk_menu_parent_class)->enter_notify_event (GTK_WIDGET (menu), (GdkEventCrossing *)send_event); gdk_event_free (send_event); } } return FALSE; } static gboolean gtk_menu_navigating_submenu (GtkMenu *menu, gint event_x, gint event_y) { GtkMenuPrivate *priv = menu->priv; gint width, height; if (!gtk_menu_has_navigation_triangle (menu)) return FALSE; width = priv->navigation_width; height = priv->navigation_height; /* Check if x/y are in the triangle spanned by the navigation parameters */ /* 1) Move the coordinates so the triangle starts at 0,0 */ event_x -= priv->navigation_x; event_y -= priv->navigation_y; /* 2) Ensure both legs move along the positive axis */ if (width < 0) { event_x = -event_x; width = -width; } if (height < 0) { event_y = -event_y; height = -height; } /* 3) Check that the given coordinate is inside the triangle. The formula * is a transformed form of this formula: x/w + y/h <= 1 */ if (event_x >= 0 && event_y >= 0 && event_x * height + event_y * width <= width * height) { return TRUE; } else { gtk_menu_stop_navigating_submenu (menu); return FALSE; } } static void gtk_menu_set_submenu_navigation_region (GtkMenu *menu, GtkMenuItem *menu_item, GdkEventCrossing *event) { GtkMenuPrivate *priv = menu->priv; gint submenu_left = 0; gint submenu_right = 0; gint submenu_top = 0; gint submenu_bottom = 0; gint width = 0; GtkWidget *event_widget; GtkMenuPopdownData *popdown_data; GdkWindow *window; g_return_if_fail (menu_item->priv->submenu != NULL); g_return_if_fail (event != NULL); event_widget = gtk_get_event_widget ((GdkEvent*) event); window = gtk_widget_get_window (menu_item->priv->submenu); gdk_window_get_origin (window, &submenu_left, &submenu_top); submenu_right = submenu_left + gdk_window_get_width (window); submenu_bottom = submenu_top + gdk_window_get_height (window); width = gdk_window_get_width (gtk_widget_get_window (event_widget)); if (event->x >= 0 && event->x < width) { gtk_menu_stop_navigating_submenu (menu); /* The navigation region is the triangle closest to the x/y * location of the rectangle. This is why the width or height * can be negative. */ if (menu_item->priv->submenu_direction == GTK_DIRECTION_RIGHT) { /* right */ priv->navigation_x = submenu_left; priv->navigation_width = event->x_root - submenu_left; } else { /* left */ priv->navigation_x = submenu_right; priv->navigation_width = event->x_root - submenu_right; } if (event->y < 0) { /* top */ priv->navigation_y = event->y_root; priv->navigation_height = submenu_top - event->y_root - NAVIGATION_REGION_OVERSHOOT; if (priv->navigation_height >= 0) return; } else { /* bottom */ priv->navigation_y = event->y_root; priv->navigation_height = submenu_bottom - event->y_root + NAVIGATION_REGION_OVERSHOOT; if (priv->navigation_height <= 0) return; } popdown_data = g_new (GtkMenuPopdownData, 1); popdown_data->menu = menu; popdown_data->device = gdk_event_get_device ((GdkEvent *) event); priv->navigation_timeout = gdk_threads_add_timeout_full (G_PRIORITY_DEFAULT, MENU_POPDOWN_DELAY, gtk_menu_stop_navigating_submenu_cb, popdown_data, (GDestroyNotify) g_free); g_source_set_name_by_id (priv->navigation_timeout, "[gtk+] gtk_menu_stop_navigating_submenu_cb"); } } static void gtk_menu_deactivate (GtkMenuShell *menu_shell) { GtkWidget *parent; g_return_if_fail (GTK_IS_MENU (menu_shell)); parent = menu_shell->priv->parent_menu_shell; menu_shell->priv->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, gboolean set_scroll_offset) { GtkMenuPrivate *priv = menu->priv; GtkWidget *widget; GtkRequisition requisition; gint x, y; gint scroll_offset; GdkScreen *screen; GdkScreen *pointer_screen; GdkRectangle monitor; GdkDevice *pointer; GtkBorder border; widget = GTK_WIDGET (menu); screen = gtk_widget_get_screen (widget); pointer = _gtk_menu_shell_get_grab_device (GTK_MENU_SHELL (menu)); gdk_device_get_position (pointer, &pointer_screen, &x, &y); /* Realize so we have the proper width and height to figure out * the right place to popup the menu. */ gtk_widget_realize (priv->toplevel); _gtk_window_get_shadow_width (GTK_WINDOW (priv->toplevel), &border); requisition.width = gtk_widget_get_allocated_width (widget); requisition.height = gtk_widget_get_allocated_height (widget); if (pointer_screen != screen) { /* Pointer is on a different screen; roughly center the * menu on the screen. If someone was using multiscreen * + Xinerama together they'd probably want something * fancier; but that is likely to be vanishingly rare. */ x = MAX (0, (gdk_screen_get_width (screen) - requisition.width) / 2); y = MAX (0, (gdk_screen_get_height (screen) - requisition.height) / 2); } priv->monitor_num = gdk_screen_get_monitor_at_point (screen, x, y); priv->initially_pushed_in = FALSE; /* Set the type hint here to allow custom position functions * to set a different hint */ if (!gtk_widget_get_visible (priv->toplevel)) gtk_window_set_type_hint (GTK_WINDOW (priv->toplevel), GDK_WINDOW_TYPE_HINT_POPUP_MENU); if (priv->position_func) { (* priv->position_func) (menu, &x, &y, &priv->initially_pushed_in, priv->position_func_data); if (priv->monitor_num < 0) priv->monitor_num = gdk_screen_get_monitor_at_point (screen, x, y); gdk_screen_get_monitor_workarea (screen, priv->monitor_num, &monitor); } else { gint space_left, space_right, space_above, space_below; gint needed_width; gint needed_height; GtkBorder padding; GtkBorder margin; gboolean rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL); get_menu_padding (widget, &padding); get_menu_margin (widget, &margin); /* The placement of popup menus horizontally works like this (with * RTL in parentheses) * * - If there is enough room to the right (left) of the mouse cursor, * position the menu there. * * - Otherwise, if if there is enough room to the left (right) of the * mouse cursor, position the menu there. * * - Otherwise if the menu is smaller than the monitor, position it * on the side of the mouse cursor that has the most space available * * - Otherwise (if there is simply not enough room for the menu on the * monitor), position it as far left (right) as possible. * * Positioning in the vertical direction is similar: first try below * mouse cursor, then above. */ gdk_screen_get_monitor_workarea (screen, priv->monitor_num, &monitor); space_left = x - monitor.x; space_right = monitor.x + monitor.width - x - 1; space_above = y - monitor.y; space_below = monitor.y + monitor.height - y - 1; /* Position horizontally. */ /* the amount of space we need to position the menu. * Note the menu is offset "thickness" pixels */ needed_width = requisition.width - padding.left; if (needed_width <= space_left || needed_width <= space_right) { if ((rtl && needed_width <= space_left) || (!rtl && needed_width > space_right)) { /* position left */ x = x - margin.left + padding.left - requisition.width + 1; } else { /* position right */ x = x + margin.right - padding.right; } /* x is clamped on-screen further down */ } else if (requisition.width <= monitor.width) { /* the menu is too big to fit on either side of the mouse * cursor, but smaller than the monitor. Position it on * the side that has the most space */ if (space_left > space_right) { /* left justify */ x = monitor.x; } else { /* right justify */ x = monitor.x + monitor.width - requisition.width; } } else /* menu is simply too big for the monitor */ { if (rtl) { /* right justify */ x = monitor.x + monitor.width - requisition.width; } else { /* left justify */ x = monitor.x; } } /* Position vertically. * The algorithm is the same as above, but simpler * because we don't have to take RTL into account. */ needed_height = requisition.height - padding.top; if (needed_height <= space_above || needed_height <= space_below) { if (needed_height <= space_below) y = y + margin.top - padding.top; else y = y - margin.bottom + padding.bottom - requisition.height + 1; y = CLAMP (y, monitor.y, monitor.y + monitor.height - requisition.height); } else if (needed_height > space_below && needed_height > space_above) { if (space_below >= space_above) y = monitor.y + monitor.height - requisition.height; else y = monitor.y; } else { y = monitor.y; } } scroll_offset = 0; if (y + requisition.height > monitor.y + monitor.height) { if (priv->initially_pushed_in) scroll_offset += (monitor.y + monitor.height) - requisition.height - y; y = (monitor.y + monitor.height) - requisition.height; } if (y < monitor.y) { if (priv->initially_pushed_in) scroll_offset += monitor.y - y; y = monitor.y; } x = CLAMP (x, monitor.x, MAX (monitor.x, monitor.x + monitor.width - requisition.width)); x -= border.left; y -= border.top; if (GTK_MENU_SHELL (menu)->priv->active) { priv->have_position = TRUE; priv->position_x = x; priv->position_y = y; } if (scroll_offset != 0) { GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); scroll_offset += arrow_border.top; } gtk_window_move (GTK_WINDOW (GTK_MENU_SHELL (menu)->priv->active ? priv->toplevel : priv->tearoff_window), x, y); if (!GTK_MENU_SHELL (menu)->priv->active) { gtk_window_resize (GTK_WINDOW (priv->tearoff_window), requisition.width, requisition.height); } if (set_scroll_offset) priv->scroll_offset = scroll_offset; } static void gtk_menu_remove_scroll_timeout (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; if (priv->scroll_timeout) { g_source_remove (priv->scroll_timeout); priv->scroll_timeout = 0; } } static void gtk_menu_stop_scrolling (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; gtk_menu_remove_scroll_timeout (menu); priv->upper_arrow_prelight = FALSE; priv->lower_arrow_prelight = FALSE; } static void gtk_menu_scroll_to (GtkMenu *menu, gint offset) { GtkMenuPrivate *priv = menu->priv; GtkBorder arrow_border, padding; GtkWidget *widget; gint x, y; gint view_width, view_height; gint border_width; gint menu_height; gboolean double_arrows; widget = GTK_WIDGET (menu); if (priv->tearoff_active && priv->tearoff_adjustment) gtk_adjustment_set_value (priv->tearoff_adjustment, offset); /* Move/resize the viewport according to arrows: */ view_width = gtk_widget_get_allocated_width (widget); view_height = gtk_widget_get_allocated_height (widget); get_menu_padding (widget, &padding); double_arrows = get_double_arrows (menu); border_width = gtk_container_get_border_width (GTK_CONTAINER (menu)); view_width -= (2 * border_width) + padding.left + padding.right; view_height -= (2 * border_width) + padding.top + padding.bottom; menu_height = priv->requested_height - (2 * border_width) - padding.top - padding.bottom; x = border_width + padding.left; y = border_width + padding.top; if (double_arrows && !priv->tearoff_active) { if (view_height < menu_height || (offset > 0 && priv->scroll_offset > 0) || (offset < 0 && priv->scroll_offset < 0)) { GtkStateFlags upper_arrow_previous_state = priv->upper_arrow_state; GtkStateFlags lower_arrow_previous_state = priv->lower_arrow_state; if (!priv->upper_arrow_visible || !priv->lower_arrow_visible) gtk_widget_queue_draw (GTK_WIDGET (menu)); priv->upper_arrow_visible = priv->lower_arrow_visible = TRUE; get_arrows_border (menu, &arrow_border); y += arrow_border.top; view_height -= arrow_border.top; view_height -= arrow_border.bottom; if (offset <= 0) priv->upper_arrow_state |= GTK_STATE_FLAG_INSENSITIVE; else { priv->upper_arrow_state &= ~(GTK_STATE_FLAG_INSENSITIVE); if (priv->upper_arrow_prelight) priv->upper_arrow_state |= GTK_STATE_FLAG_PRELIGHT; else priv->upper_arrow_state &= ~(GTK_STATE_FLAG_PRELIGHT); } if (offset >= menu_height - view_height) priv->lower_arrow_state |= GTK_STATE_FLAG_INSENSITIVE; else { priv->lower_arrow_state &= ~(GTK_STATE_FLAG_INSENSITIVE); if (priv->lower_arrow_prelight) priv->lower_arrow_state |= GTK_STATE_FLAG_PRELIGHT; else priv->lower_arrow_state &= ~(GTK_STATE_FLAG_PRELIGHT); } if ((priv->upper_arrow_state != upper_arrow_previous_state) || (priv->lower_arrow_state != lower_arrow_previous_state)) gtk_widget_queue_draw (GTK_WIDGET (menu)); if ((upper_arrow_previous_state & GTK_STATE_FLAG_INSENSITIVE) == 0 && (priv->upper_arrow_state & GTK_STATE_FLAG_INSENSITIVE) != 0) { /* At the upper border, possibly remove timeout */ if (priv->scroll_step < 0) { gtk_menu_stop_scrolling (menu); gtk_widget_queue_draw (GTK_WIDGET (menu)); } } if ((lower_arrow_previous_state & GTK_STATE_FLAG_INSENSITIVE) == 0 && (priv->lower_arrow_state & GTK_STATE_FLAG_INSENSITIVE) != 0) { /* At the lower border, possibly remove timeout */ if (priv->scroll_step > 0) { gtk_menu_stop_scrolling (menu); gtk_widget_queue_draw (GTK_WIDGET (menu)); } } } else if (priv->upper_arrow_visible || priv->lower_arrow_visible) { offset = 0; priv->upper_arrow_visible = priv->lower_arrow_visible = FALSE; priv->upper_arrow_prelight = priv->lower_arrow_prelight = FALSE; gtk_menu_stop_scrolling (menu); gtk_widget_queue_draw (GTK_WIDGET (menu)); } } else if (!priv->tearoff_active) { gboolean last_visible; last_visible = priv->upper_arrow_visible; priv->upper_arrow_visible = offset > 0; /* upper_arrow_visible may have changed, so requery the border */ get_arrows_border (menu, &arrow_border); view_height -= arrow_border.top; if ((last_visible != priv->upper_arrow_visible) && !priv->upper_arrow_visible) { priv->upper_arrow_prelight = FALSE; /* If we hide the upper arrow, possibly remove timeout */ if (priv->scroll_step < 0) { gtk_menu_stop_scrolling (menu); gtk_widget_queue_draw (GTK_WIDGET (menu)); } } last_visible = priv->lower_arrow_visible; priv->lower_arrow_visible = offset < menu_height - view_height; /* lower_arrow_visible may have changed, so requery the border */ get_arrows_border (menu, &arrow_border); view_height -= arrow_border.bottom; if ((last_visible != priv->lower_arrow_visible) && !priv->lower_arrow_visible) { priv->lower_arrow_prelight = FALSE; /* If we hide the lower arrow, possibly remove timeout */ if (priv->scroll_step > 0) { gtk_menu_stop_scrolling (menu); gtk_widget_queue_draw (GTK_WIDGET (menu)); } } y += arrow_border.top; } /* Scroll the menu: */ if (gtk_widget_get_realized (widget)) { gdk_window_move (priv->bin_window, 0, -offset); gdk_window_move_resize (priv->view_window, x, y, view_width, view_height); } priv->scroll_offset = offset; } static gboolean compute_child_offset (GtkMenu *menu, GtkWidget *menu_item, gint *offset, gint *height, gboolean *is_last_child) { GtkMenuPrivate *priv = menu->priv; gint item_top_attach; gint item_bottom_attach; gint child_offset = 0; gint i; get_effective_child_attach (menu_item, NULL, NULL, &item_top_attach, &item_bottom_attach); /* there is a possibility that we get called before _size_request, * so check the height table for safety. */ if (!priv->heights || priv->heights_length < gtk_menu_get_n_rows (menu)) return FALSE; /* when we have a row with only invisible children, its height will * be zero, so there's no need to check WIDGET_VISIBLE here */ for (i = 0; i < item_top_attach; i++) child_offset += priv->heights[i]; if (is_last_child) *is_last_child = (item_bottom_attach == gtk_menu_get_n_rows (menu)); if (offset) *offset = child_offset; if (height) *height = priv->heights[item_top_attach]; return TRUE; } static void gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell, GtkWidget *menu_item) { GtkMenu *menu = GTK_MENU (menu_shell); GtkMenuPrivate *priv = menu->priv; GtkWidget *widget = GTK_WIDGET (menu_shell); gint child_offset, child_height; gint height; gint y; gint arrow_height; gboolean last_child = 0; /* We need to check if the selected item fully visible. * If not we need to scroll the menu so that it becomes fully * visible. */ if (compute_child_offset (menu, menu_item, &child_offset, &child_height, &last_child)) { gboolean double_arrows; GtkBorder padding; y = priv->scroll_offset; height = gdk_window_get_height (gtk_widget_get_window (widget)); double_arrows = get_double_arrows (menu); get_menu_padding (widget, &padding); height -= 2 * gtk_container_get_border_width (GTK_CONTAINER (menu)) + padding.top + padding.bottom; if (child_offset < y) { /* Ignore the enter event we might get if the pointer * is on the menu */ menu_shell->priv->ignore_enter = TRUE; gtk_menu_scroll_to (menu, child_offset); } else { GtkBorder arrow_border; arrow_height = 0; get_arrows_border (menu, &arrow_border); if (!priv->tearoff_active) arrow_height = arrow_border.top + arrow_border.bottom; if (child_offset + child_height > y + height - arrow_height) { arrow_height = 0; if ((!last_child && !priv->tearoff_active) || double_arrows) arrow_height += arrow_border.bottom; y = child_offset + child_height - height + arrow_height; if (((y > 0) && !priv->tearoff_active) || double_arrows) { /* Need upper arrow */ arrow_height += arrow_border.top; y = child_offset + child_height - height + arrow_height; } /* Ignore the enter event we might get if the pointer * is on the menu */ menu_shell->priv->ignore_enter = TRUE; gtk_menu_scroll_to (menu, y); } } } } static void gtk_menu_select_item (GtkMenuShell *menu_shell, GtkWidget *menu_item) { GtkMenu *menu = GTK_MENU (menu_shell); if (gtk_widget_get_realized (GTK_WIDGET (menu))) gtk_menu_scroll_item_visible (menu_shell, menu_item); GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->select_item (menu_shell, menu_item); } /* Reparent the menu, taking care of the refcounting * * If unrealize is true we force a unrealize while reparenting the parent. * This can help eliminate flicker in some cases. * * What happens is that when the menu is unrealized and then re-realized, * the allocations are as follows: * * parent - 1x1 at (0,0) * child1 - 100x20 at (0,0) * child2 - 100x20 at (0,20) * child3 - 100x20 at (0,40) * * That is, the parent is small but the children are full sized. Then, * when the queued_resize gets processed, the parent gets resized to * full size. * * But in order to eliminate flicker when scrolling, gdkgeometry-x11.c * contains the following logic: * * - if a move or resize operation on a window would change the clip * region on the children, then before the window is resized * the background for children is temporarily set to None, the * move/resize done, and the background for the children restored. * * So, at the point where the parent is resized to final size, the * background for the children is temporarily None, and thus they * are not cleared to the background color and the previous background * (the image of the menu) is left in place. */ static void gtk_menu_reparent (GtkMenu *menu, GtkWidget *new_parent, gboolean unrealize) { GObject *object = G_OBJECT (menu); GtkWidget *widget = GTK_WIDGET (menu); gboolean was_floating = g_object_is_floating (object); g_object_ref_sink (object); if (unrealize) { g_object_ref (object); gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (widget)), widget); gtk_container_add (GTK_CONTAINER (new_parent), widget); g_object_unref (object); } else { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_widget_reparent (widget, new_parent); G_GNUC_END_IGNORE_DEPRECATIONS; } if (was_floating) g_object_force_floating (object); else g_object_unref (object); } static void gtk_menu_show_all (GtkWidget *widget) { /* Show children, but not self. */ gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL); } /** * gtk_menu_set_screen: * @menu: a #GtkMenu * @screen: (allow-none): a #GdkScreen, or %NULL if the screen should be * determined by the widget the menu is attached to * * Sets the #GdkScreen on which the menu will be displayed. * * Since: 2.2 */ void gtk_menu_set_screen (GtkMenu *menu, GdkScreen *screen) { g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (screen == NULL || GDK_IS_SCREEN (screen)); g_object_set_data (G_OBJECT (menu), I_("gtk-menu-explicit-screen"), screen); if (screen) { menu_change_screen (menu, screen); } else { GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu); if (attach_widget) attach_widget_screen_changed (attach_widget, NULL, menu); } } /** * gtk_menu_attach: * @menu: a #GtkMenu * @child: a #GtkMenuItem * @left_attach: The column number to attach the left side of the item to * @right_attach: The column number to attach the right side of the item to * @top_attach: The row number to attach the top of the item to * @bottom_attach: The row number to attach the bottom of the item to * * Adds a new #GtkMenuItem to a (table) menu. The number of “cells” that * an item will occupy is specified by @left_attach, @right_attach, * @top_attach and @bottom_attach. These each represent the leftmost, * rightmost, uppermost and lower column and row numbers of the table. * (Columns and rows are indexed from zero). * * Note that this function is not related to gtk_menu_detach(). * * Since: 2.4 */ void gtk_menu_attach (GtkMenu *menu, GtkWidget *child, guint left_attach, guint right_attach, guint top_attach, guint bottom_attach) { GtkMenuShell *menu_shell; GtkWidget *parent; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (GTK_IS_MENU_ITEM (child)); parent = gtk_widget_get_parent (child); g_return_if_fail (parent == NULL || parent == GTK_WIDGET (menu)); g_return_if_fail (left_attach < right_attach); g_return_if_fail (top_attach < bottom_attach); menu_shell = GTK_MENU_SHELL (menu); if (!parent) { AttachInfo *ai = get_attach_info (child); ai->left_attach = left_attach; ai->right_attach = right_attach; ai->top_attach = top_attach; ai->bottom_attach = bottom_attach; menu_shell->priv->children = g_list_append (menu_shell->priv->children, child); gtk_widget_set_parent (child, GTK_WIDGET (menu)); menu_queue_resize (menu); } else { gtk_container_child_set (GTK_CONTAINER (parent), child, "left-attach", left_attach, "right-attach", right_attach, "top-attach", top_attach, "bottom-attach", bottom_attach, NULL); } } static gint gtk_menu_get_popup_delay (GtkMenuShell *menu_shell) { return MENU_POPUP_DELAY; } static GtkWidget * find_child_containing (GtkMenuShell *menu_shell, int left, int right, int top, int bottom) { GList *list; /* find a child which includes the area given by * left, right, top, bottom. */ for (list = menu_shell->priv->children; list; list = list->next) { gint l, r, t, b; if (!_gtk_menu_item_is_selectable (list->data)) continue; get_effective_child_attach (list->data, &l, &r, &t, &b); if (l <= left && right <= r && t <= top && bottom <= b) return GTK_WIDGET (list->data); } return NULL; } static void gtk_menu_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction) { GtkMenu *menu = GTK_MENU (menu_shell); gint i; gint l, r, t, b; GtkWidget *match = NULL; if (gtk_widget_get_direction (GTK_WIDGET (menu_shell)) == GTK_TEXT_DIR_RTL) { switch (direction) { case GTK_MENU_DIR_CHILD: direction = GTK_MENU_DIR_PARENT; break; case GTK_MENU_DIR_PARENT: direction = GTK_MENU_DIR_CHILD; break; default: ; } } /* use special table menu key bindings */ if (menu_shell->priv->active_menu_item && gtk_menu_get_n_columns (menu) > 1) { get_effective_child_attach (menu_shell->priv->active_menu_item, &l, &r, &t, &b); if (direction == GTK_MENU_DIR_NEXT) { for (i = b; i < gtk_menu_get_n_rows (menu); i++) { match = find_child_containing (menu_shell, l, l + 1, i, i + 1); if (match) break; } if (!match) { /* wrap around */ for (i = 0; i < t; i++) { match = find_child_containing (menu_shell, l, l + 1, i, i + 1); if (match) break; } } } else if (direction == GTK_MENU_DIR_PREV) { for (i = t; i > 0; i--) { match = find_child_containing (menu_shell, l, l + 1, i - 1, i); if (match) break; } if (!match) { /* wrap around */ for (i = gtk_menu_get_n_rows (menu); i > b; i--) { match = find_child_containing (menu_shell, l, l + 1, i - 1, i); if (match) break; } } } else if (direction == GTK_MENU_DIR_PARENT) { /* we go one left if possible */ if (l > 0) match = find_child_containing (menu_shell, l - 1, l, t, t + 1); if (!match) { GtkWidget *parent = menu_shell->priv->parent_menu_shell; if (!parent || g_list_length (GTK_MENU_SHELL (parent)->priv->children) <= 1) match = menu_shell->priv->active_menu_item; } } else if (direction == GTK_MENU_DIR_CHILD) { /* we go one right if possible */ if (r < gtk_menu_get_n_columns (menu)) match = find_child_containing (menu_shell, r, r + 1, t, t + 1); if (!match) { GtkWidget *parent = menu_shell->priv->parent_menu_shell; if (! GTK_MENU_ITEM (menu_shell->priv->active_menu_item)->priv->submenu && (!parent || g_list_length (GTK_MENU_SHELL (parent)->priv->children) <= 1)) match = menu_shell->priv->active_menu_item; } } if (match) { gtk_menu_shell_select_item (menu_shell, match); return; } } GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->move_current (menu_shell, direction); } static gint get_visible_size (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; GtkAllocation allocation; GtkWidget *widget = GTK_WIDGET (menu); GtkContainer *container = GTK_CONTAINER (menu); GtkBorder padding; gint menu_height; gtk_widget_get_allocation (widget, &allocation); get_menu_padding (widget, &padding); menu_height = (allocation.height - (2 * gtk_container_get_border_width (container)) - padding.top - padding.bottom); if (!priv->tearoff_active) { GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); menu_height -= arrow_border.top; menu_height -= arrow_border.bottom; } return menu_height; } /* Find the sensitive on-screen child containing @y, or if none, * the nearest selectable onscreen child. (%NULL if none) */ static GtkWidget * child_at (GtkMenu *menu, gint y) { GtkMenuPrivate *priv = menu->priv; GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu); GtkWidget *child = NULL; gint child_offset = 0; GList *children; gint menu_height; gint lower, upper; /* Onscreen bounds */ menu_height = get_visible_size (menu); lower = priv->scroll_offset; upper = priv->scroll_offset + menu_height; for (children = menu_shell->priv->children; children; children = children->next) { if (gtk_widget_get_visible (children->data)) { GtkRequisition child_requisition; gtk_widget_get_preferred_size (children->data, &child_requisition, NULL); if (_gtk_menu_item_is_selectable (children->data) && child_offset >= lower && child_offset + child_requisition.height <= upper) { child = children->data; G_GNUC_BEGIN_IGNORE_DEPRECATIONS if (child_offset + child_requisition.height > y && !GTK_IS_TEAROFF_MENU_ITEM (child)) return child; G_GNUC_END_IGNORE_DEPRECATIONS } child_offset += child_requisition.height; } } return child; } static gint get_menu_height (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; GtkWidget *widget = GTK_WIDGET (menu); GtkBorder padding; gint height; get_menu_padding (widget, &padding); height = priv->requested_height; height -= (gtk_container_get_border_width (GTK_CONTAINER (widget)) * 2) + padding.top + padding.bottom; if (!priv->tearoff_active) { GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); height -= arrow_border.top; height -= arrow_border.bottom; } return height; } static void gtk_menu_real_move_scroll (GtkMenu *menu, GtkScrollType type) { GtkMenuPrivate *priv = menu->priv; gint page_size = get_visible_size (menu); gint end_position = get_menu_height (menu); GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu); switch (type) { case GTK_SCROLL_PAGE_UP: case GTK_SCROLL_PAGE_DOWN: { gint old_offset; gint new_offset; gint child_offset = 0; gboolean old_upper_arrow_visible; gint step; if (type == GTK_SCROLL_PAGE_UP) step = - page_size; else step = page_size; if (menu_shell->priv->active_menu_item) { gint child_height; if (compute_child_offset (menu, menu_shell->priv->active_menu_item, &child_offset, &child_height, NULL)) child_offset += child_height / 2; } menu_shell->priv->ignore_enter = TRUE; old_upper_arrow_visible = priv->upper_arrow_visible && !priv->tearoff_active; old_offset = priv->scroll_offset; new_offset = priv->scroll_offset + step; new_offset = CLAMP (new_offset, 0, end_position - page_size); gtk_menu_scroll_to (menu, new_offset); if (menu_shell->priv->active_menu_item) { GtkWidget *new_child; gboolean new_upper_arrow_visible = priv->upper_arrow_visible && !priv->tearoff_active; GtkBorder arrow_border; get_arrows_border (menu, &arrow_border); if (priv->scroll_offset != old_offset) step = priv->scroll_offset - old_offset; step -= (new_upper_arrow_visible - old_upper_arrow_visible) * arrow_border.top; new_child = child_at (menu, child_offset + step); if (new_child) gtk_menu_shell_select_item (menu_shell, new_child); } } break; case GTK_SCROLL_START: /* Ignore the enter event we might get if the pointer is on the menu */ menu_shell->priv->ignore_enter = TRUE; gtk_menu_shell_select_first (menu_shell, TRUE); break; case GTK_SCROLL_END: /* Ignore the enter event we might get if the pointer is on the menu */ menu_shell->priv->ignore_enter = TRUE; _gtk_menu_shell_select_last (menu_shell, TRUE); break; default: break; } } /** * gtk_menu_set_monitor: * @menu: a #GtkMenu * @monitor_num: the number of the monitor on which the menu should * be popped up * * Informs GTK+ on which monitor a menu should be popped up. * See gdk_screen_get_monitor_geometry(). * * This function should be called from a #GtkMenuPositionFunc * if the menu should not appear on the same monitor as the pointer. * This information can’t be reliably inferred from the coordinates * returned by a #GtkMenuPositionFunc, since, for very long menus, * these coordinates may extend beyond the monitor boundaries or even * the screen boundaries. * * Since: 2.4 */ void gtk_menu_set_monitor (GtkMenu *menu, gint monitor_num) { GtkMenuPrivate *priv = menu->priv; g_return_if_fail (GTK_IS_MENU (menu)); if (priv->monitor_num != monitor_num) { priv->monitor_num = monitor_num; g_object_notify (G_OBJECT (menu), "monitor"); } } /** * gtk_menu_get_monitor: * @menu: a #GtkMenu * * Retrieves the number of the monitor on which to show the menu. * * Returns: the number of the monitor on which the menu should * be popped up or -1, if no monitor has been set * * Since: 2.14 */ gint gtk_menu_get_monitor (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), -1); return menu->priv->monitor_num; } /** * gtk_menu_get_for_attach_widget: * @widget: a #GtkWidget * * Returns a list of the menus which are attached to this widget. * This list is owned by GTK+ and must not be modified. * * Returns: (element-type GtkWidget) (transfer none): the list * of menus attached to his widget. * * Since: 2.6 */ GList* gtk_menu_get_for_attach_widget (GtkWidget *widget) { GList *list; g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); list = g_object_get_data (G_OBJECT (widget), ATTACHED_MENUS); return list; } static void gtk_menu_grab_notify (GtkWidget *widget, gboolean was_grabbed) { GtkMenu *menu; GtkWidget *toplevel; GtkWindowGroup *group; GtkWidget *grab; GdkDevice *pointer; menu = GTK_MENU (widget); pointer = _gtk_menu_shell_get_grab_device (GTK_MENU_SHELL (widget)); if (!pointer || !gtk_widget_device_is_shadowed (widget, pointer)) return; toplevel = gtk_widget_get_toplevel (widget); if (!GTK_IS_WINDOW (toplevel)) return; group = gtk_window_get_group (GTK_WINDOW (toplevel)); grab = gtk_window_group_get_current_device_grab (group, pointer); if (GTK_MENU_SHELL (widget)->priv->active && !GTK_IS_MENU_SHELL (grab)) gtk_menu_shell_cancel (GTK_MENU_SHELL (widget)); menu->priv->drag_scroll_started = FALSE; } /** * gtk_menu_set_reserve_toggle_size: * @menu: a #GtkMenu * @reserve_toggle_size: whether to reserve size for toggles * * Sets whether the menu should reserve space for drawing toggles * or icons, regardless of their actual presence. * * Since: 2.18 */ void gtk_menu_set_reserve_toggle_size (GtkMenu *menu, gboolean reserve_toggle_size) { GtkMenuPrivate *priv = menu->priv; gboolean no_toggle_size; g_return_if_fail (GTK_IS_MENU (menu)); no_toggle_size = !reserve_toggle_size; if (priv->no_toggle_size != no_toggle_size) { priv->no_toggle_size = no_toggle_size; g_object_notify (G_OBJECT (menu), "reserve-toggle-size"); } } /** * gtk_menu_get_reserve_toggle_size: * @menu: a #GtkMenu * * Returns whether the menu reserves space for toggles and * icons, regardless of their actual presence. * * Returns: Whether the menu reserves toggle space * * Since: 2.18 */ gboolean gtk_menu_get_reserve_toggle_size (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), FALSE); return !menu->priv->no_toggle_size; } /** * gtk_menu_new_from_model: * @model: a #GMenuModel * * Creates a #GtkMenu and populates it with menu items and * submenus according to @model. * * The created menu items are connected to actions found in the * #GtkApplicationWindow to which the menu belongs - typically * by means of being attached to a widget (see gtk_menu_attach_to_widget()) * that is contained within the #GtkApplicationWindows widget hierarchy. * * Actions can also be added using gtk_widget_insert_action_group() on the menu's * attach widget or on any of its parent widgets. * * Returns: a new #GtkMenu * * Since: 3.4 */ GtkWidget * gtk_menu_new_from_model (GMenuModel *model) { GtkWidget *menu; g_return_val_if_fail (G_IS_MENU_MODEL (model), NULL); menu = gtk_menu_new (); gtk_menu_shell_bind_model (GTK_MENU_SHELL (menu), model, NULL, TRUE); return menu; }