/* 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, "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; * guint 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 (gdk_event_get_event_type (event) == GDK_BUTTON_PRESS) * { * gdk_event_get_button (event, &button); * if (button == GDK_BUTTON_SECONDARY) * { * gtk_menu_popup (menu, NULL, NULL, NULL, NULL, * button, gdk_event_get_time (event)); * return TRUE; * } * } * * return FALSE; * } * ]| * * # CSS nodes * * |[ * menu * ├── arrow.top * ├── * ┊ * ├── * ╰── arrow.bottom * ]| * * The main CSS node of GtkMenu has name menu, and there are two subnodes * with name arrow, for scrolling menu arrows. These subnodes get the * .top and .bottom style classes. */ #include "config.h" #include "gtkmenuprivate.h" #include "gtkaccellabel.h" #include "gtkaccelmap.h" #include "gtkadjustment.h" #include "gtkbindings.h" #include "gtkbox.h" #include "gtkcheckmenuitemprivate.h" #include "gtkcssnodeprivate.h" #include "gtkcssstylepropertyprivate.h" #include "gtkdnd.h" #include "gtkeventcontrollerscroll.h" #include "gtkiconprivate.h" #include "gtkintl.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenuitemprivate.h" #include "gtkmenushellprivate.h" #include "gtkprivate.h" #include "gtkscrollbar.h" #include "gtksettings.h" #include "gtksnapshot.h" #include "gtkstylecontextprivate.h" #include "gtktypebuiltins.h" #include "gtkwidgetpath.h" #include "gtkwidgetprivate.h" #include "gtkwindowgroup.h" #include "gtkwindowprivate.h" #include "a11y/gtkmenuaccessible.h" #include "gdk/gdk-private.h" #include #include #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, POPPED_UP, 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, PROP_ANCHOR_HINTS, PROP_RECT_ANCHOR_DX, PROP_RECT_ANCHOR_DY, PROP_MENU_TYPE_HINT }; 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_finalize (GObject *object); 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, const GtkAllocation *allocation, int baseline, GtkAllocation *out_clip); static void gtk_menu_show (GtkWidget *widget); static void gtk_menu_snapshot (GtkWidget *widget, GtkSnapshot *snapshot); static gboolean gtk_menu_key_press (GtkWidget *widget, GdkEventKey *event); static void gtk_menu_motion (GtkEventController *controller, double x, double y, gpointer user_data); static void gtk_menu_enter (GtkEventController *controller, double x, double y, gpointer user_data); static void gtk_menu_leave (GtkEventController *controller, gpointer user_data); 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_scroll_controller_scroll (GtkEventControllerScroll *scroll, gdouble dx, gdouble dy, GtkMenu *menu); 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_handle_scrolling (GtkMenu *menu, gint event_x, gint event_y, gboolean enter, gboolean motion); 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_navigating_submenu (GtkMenu *menu, gint event_x, gint event_y); static void gtk_menu_deactivate (GtkMenuShell *menu_shell); static void gtk_menu_position (GtkMenu *menu, gboolean set_scroll_offset); static void gtk_menu_remove (GtkContainer *menu, GtkWidget *widget); 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_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline); static void gtk_menu_pressed_cb (GtkGestureMultiPress *gesture, int n_press, double x, double y, gpointer user_data); static void gtk_menu_released_cb (GtkGestureMultiPress *gesture, int n_press, double x, double y, gpointer user_data); 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; gobject_class->finalize = gtk_menu_finalize; 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->snapshot = gtk_menu_snapshot; widget_class->key_press_event = gtk_menu_key_press; 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->measure = gtk_menu_measure; 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, NULL, G_TYPE_NONE, 1, GTK_TYPE_SCROLL_TYPE); /** * GtkMenu::popped-up: * @menu: the #GtkMenu that popped up * @flipped_rect: (nullable): the position of @menu after any possible * flipping or %NULL if the backend can't obtain it * @final_rect: (nullable): the final position of @menu or %NULL if the * backend can't obtain it * @flipped_x: %TRUE if the anchors were flipped horizontally * @flipped_y: %TRUE if the anchors were flipped vertically * * Emitted when the position of @menu is finalized after being popped up * using gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), or * gtk_menu_popup_at_pointer (). * * @menu might be flipped over the anchor rectangle in order to keep it * on-screen, in which case @flipped_x and @flipped_y will be set to %TRUE * accordingly. * * @flipped_rect is the ideal position of @menu after any possible flipping, * but before any possible sliding. @final_rect is @flipped_rect, but possibly * translated in the case that flipping is still ineffective in keeping @menu * on-screen. * * ![](popup-slide.png) * * The blue menu is @menu's ideal position, the green menu is @flipped_rect, * and the red menu is @final_rect. * * See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), * gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints, * #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and * #GtkMenu:menu-type-hint. */ menu_signals[POPPED_UP] = g_signal_new_class_handler (I_("popped-up"), G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, NULL, NULL, NULL, _gtk_marshal_VOID__POINTER_POINTER_BOOLEAN_BOOLEAN, G_TYPE_NONE, 4, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN); /** * GtkMenu:active: * * The index of the currently selected menu item, or -1 if no * menu item is selected. **/ 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. **/ 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. **/ 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. **/ 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:monitor: * * The monitor the menu will be popped up on. **/ 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. */ 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:anchor-hints: * * Positioning hints for aligning the menu relative to a rectangle. * * These hints determine how the menu should be positioned in the case that * the menu would fall off-screen if placed in its ideal position. * * ![](popup-flip.png) * * For example, %GDK_ANCHOR_FLIP_Y will replace %GDK_GRAVITY_NORTH_WEST with * %GDK_GRAVITY_SOUTH_WEST and vice versa if the menu extends beyond the * bottom edge of the monitor. * * See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), * gtk_menu_popup_at_pointer (), #GtkMenu:rect-anchor-dx, * #GtkMenu:rect-anchor-dy, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up. */ g_object_class_install_property (gobject_class, PROP_ANCHOR_HINTS, g_param_spec_flags ("anchor-hints", P_("Anchor hints"), P_("Positioning hints for when the menu might fall off-screen"), GDK_TYPE_ANCHOR_HINTS, GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE | GDK_ANCHOR_RESIZE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_EXPLICIT_NOTIFY)); /** * GtkMenu:rect-anchor-dx: * * Horizontal offset to apply to the menu, i.e. the rectangle or widget * anchor. * * See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), * gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints, * #GtkMenu:rect-anchor-dy, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up. */ g_object_class_install_property (gobject_class, PROP_RECT_ANCHOR_DX, g_param_spec_int ("rect-anchor-dx", P_("Rect anchor dx"), P_("Rect anchor horizontal offset"), G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_EXPLICIT_NOTIFY)); /** * GtkMenu:rect-anchor-dy: * * Vertical offset to apply to the menu, i.e. the rectangle or widget anchor. * * See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), * gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints, * #GtkMenu:rect-anchor-dx, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up. */ g_object_class_install_property (gobject_class, PROP_RECT_ANCHOR_DY, g_param_spec_int ("rect-anchor-dy", P_("Rect anchor dy"), P_("Rect anchor vertical offset"), G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_EXPLICIT_NOTIFY)); /** * GtkMenu:menu-type-hint: * * The #GdkWindowTypeHint to use for the menu's #GdkWindow. * * See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), * gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints, * #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and #GtkMenu::popped-up. */ g_object_class_install_property (gobject_class, PROP_MENU_TYPE_HINT, g_param_spec_enum ("menu-type-hint", P_("Menu type hint"), P_("Menu window type hint"), GDK_TYPE_WINDOW_TYPE_HINT, GDK_WINDOW_TYPE_HINT_POPUP_MENU, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_EXPLICIT_NOTIFY)); 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)); 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); gtk_widget_class_set_css_name (widget_class, I_("menu")); } 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_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; case PROP_ANCHOR_HINTS: if (menu->priv->anchor_hints != g_value_get_flags (value)) { menu->priv->anchor_hints = g_value_get_flags (value); g_object_notify_by_pspec (object, pspec); } break; case PROP_RECT_ANCHOR_DX: if (menu->priv->rect_anchor_dx != g_value_get_int (value)) { menu->priv->rect_anchor_dx = g_value_get_int (value); g_object_notify_by_pspec (object, pspec); } break; case PROP_RECT_ANCHOR_DY: if (menu->priv->rect_anchor_dy != g_value_get_int (value)) { menu->priv->rect_anchor_dy = g_value_get_int (value); g_object_notify_by_pspec (object, pspec); } break; case PROP_MENU_TYPE_HINT: if (menu->priv->menu_type_hint != g_value_get_enum (value)) { menu->priv->menu_type_hint = g_value_get_enum (value); g_object_notify_by_pspec (object, pspec); } 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_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; case PROP_ANCHOR_HINTS: g_value_set_flags (value, menu->priv->anchor_hints); break; case PROP_RECT_ANCHOR_DX: g_value_set_int (value, menu->priv->rect_anchor_dx); break; case PROP_RECT_ANCHOR_DY: g_value_set_int (value, menu->priv->rect_anchor_dy); break; case PROP_MENU_TYPE_HINT: g_value_set_enum (value, menu->priv->menu_type_hint); 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 void gtk_menu_init (GtkMenu *menu) { GtkMenuPrivate *priv; priv = gtk_menu_get_instance_private (menu); menu->priv = priv; priv->toplevel = gtk_window_new (GTK_WINDOW_POPUP); gtk_container_add (GTK_CONTAINER (priv->toplevel), GTK_WIDGET (menu)); g_signal_connect (priv->toplevel, "destroy", G_CALLBACK (gtk_widget_destroyed), &priv->toplevel); 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; priv->anchor_hints = GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE | GDK_ANCHOR_RESIZE; priv->rect_anchor_dx = 0; priv->rect_anchor_dy = 0; priv->menu_type_hint = GDK_WINDOW_TYPE_HINT_POPUP_MENU; _gtk_widget_set_captured_event_handler (GTK_WIDGET (menu), gtk_menu_captured_event); priv->top_arrow_widget = gtk_icon_new ("arrow"); gtk_style_context_add_class (gtk_widget_get_style_context (priv->top_arrow_widget), GTK_STYLE_CLASS_TOP); gtk_widget_set_parent (priv->top_arrow_widget, GTK_WIDGET (menu)); gtk_widget_hide (priv->top_arrow_widget); priv->bottom_arrow_widget = gtk_icon_new ("arrow"); gtk_style_context_add_class (gtk_widget_get_style_context (priv->bottom_arrow_widget), GTK_STYLE_CLASS_BOTTOM); gtk_widget_set_parent (priv->bottom_arrow_widget, GTK_WIDGET (menu)); gtk_widget_hide (priv->bottom_arrow_widget); priv->click_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (menu)); gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (priv->click_gesture), FALSE); gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (priv->click_gesture), 0); gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->click_gesture), GTK_PHASE_BUBBLE); g_signal_connect (priv->click_gesture, "pressed", G_CALLBACK (gtk_menu_pressed_cb), menu); g_signal_connect (priv->click_gesture, "released", G_CALLBACK (gtk_menu_released_cb), menu); priv->scroll_controller = gtk_event_controller_scroll_new (GTK_WIDGET (menu), GTK_EVENT_CONTROLLER_SCROLL_VERTICAL); g_signal_connect (priv->scroll_controller, "scroll", G_CALLBACK (gtk_menu_scroll_controller_scroll), menu); priv->motion_controller = gtk_event_controller_motion_new (GTK_WIDGET (menu)); g_signal_connect (priv->motion_controller, "enter", G_CALLBACK (gtk_menu_enter), menu); g_signal_connect (priv->motion_controller, "motion", G_CALLBACK (gtk_menu_motion), menu); g_signal_connect (priv->motion_controller, "leave", G_CALLBACK (gtk_menu_leave), menu); } static void moved_to_rect_cb (GdkWindow *window, const GdkRectangle *flipped_rect, const GdkRectangle *final_rect, gboolean flipped_x, gboolean flipped_y, GtkMenu *menu) { g_signal_emit (menu, menu_signals[POPPED_UP], 0, flipped_rect, final_rect, flipped_x, flipped_y); } 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) { g_signal_handlers_disconnect_by_func (priv->toplevel, moved_to_rect_cb, menu); gtk_widget_destroy (priv->toplevel); } g_clear_pointer (&priv->heights, 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 gtk_menu_finalize (GObject *object) { GtkMenu *menu = GTK_MENU (object); GtkMenuPrivate *priv = menu->priv; gtk_widget_unparent (priv->top_arrow_widget); gtk_widget_unparent (priv->bottom_arrow_widget); g_clear_object (&priv->click_gesture); g_clear_object (&priv->scroll_controller); G_OBJECT_CLASS (gtk_menu_parent_class)->finalize (object); } static void menu_change_display (GtkMenu *menu, GdkDisplay *new_display) { GtkMenuPrivate *priv = menu->priv; if (new_display == gtk_widget_get_display (GTK_WIDGET (menu))) return; gtk_window_set_display (GTK_WINDOW (priv->toplevel), new_display); priv->monitor_num = -1; } static void attach_widget_display_changed (GtkWidget *attach_widget, GdkDisplay *previous_display, GtkMenu *menu) { if (!g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-display")) menu_change_display (menu, gtk_widget_get_display (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, "display-changed", G_CALLBACK (attach_widget_display_changed), menu); attach_widget_display_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)); 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. */ if (toplevel) { 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_display_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)); 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; gtk_widget_insert_before (child, GTK_WIDGET (menu), priv->bottom_arrow_widget); GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->insert (menu_shell, child, position); menu_queue_resize (menu); } static gboolean popup_grab_on_window (GdkWindow *window, GdkDevice *pointer) { GdkGrabStatus status; GdkSeat *seat; seat = gdk_device_get_seat (pointer); status = gdk_seat_grab (seat, window, GDK_SEAT_CAPABILITY_ALL, TRUE, NULL, NULL, NULL, NULL); return status == GDK_GRAB_SUCCESS; } 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); } static void gtk_menu_popup_internal (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 *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) device = gdk_seat_get_pointer (gdk_display_get_default_seat (display)); widget = GTK_WIDGET (menu); menu_shell = GTK_MENU_SHELL (menu); if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) pointer = gdk_device_get_associated_device (device); else pointer = 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 (xgrab_shell && xgrab_shell != widget) { if (popup_grab_on_window (gtk_widget_get_window (xgrab_shell), pointer)) { _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, pointer)) { _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) { GdkEventType event_type = gdk_event_get_event_type (current_event); if ((event_type != GDK_BUTTON_PRESS) && (event_type != GDK_ENTER_NOTIFY)) menu_shell->priv->ignore_enter = TRUE; source_device = gdk_event_get_source_device (current_event); g_object_unref (current_event); } else menu_shell->priv->ignore_enter = TRUE; 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-display")) { 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), pointer); /* Should always succeed */ gtk_grab_add (GTK_WIDGET (menu)); 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_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. */ 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; g_return_if_fail (GTK_IS_MENU (menu)); priv = menu->priv; priv->rect_window = NULL; priv->widget = NULL; gtk_menu_popup_internal (menu, device, parent_menu_shell, parent_menu_item, func, data, destroy, button, activate_time); } /** * 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); } static GdkDevice * get_device_for_event (const GdkEvent *event) { GdkDevice *device = NULL; GdkSeat *seat = NULL; GdkDisplay *display = NULL; device = gdk_event_get_device (event); if (device) return device; seat = gdk_event_get_seat (event); if (!seat) { display = gdk_event_get_display (event); if (!display) { g_warning ("no display for event, using default"); display = gdk_display_get_default (); } if (display) seat = gdk_display_get_default_seat (display); } return seat ? gdk_seat_get_pointer (seat) : NULL; } /** * gtk_menu_popup_at_rect: * @menu: the #GtkMenu to pop up * @rect_window: (not nullable): the #GdkWindow @rect is relative to * @rect: (not nullable): the #GdkRectangle to align @menu with * @rect_anchor: the point on @rect to align with @menu's anchor point * @menu_anchor: the point on @menu to align with @rect's anchor point * @trigger_event: (nullable): the #GdkEvent that initiated this request or * %NULL if it's the current event * * Displays @menu and makes it available for selection. * * See gtk_menu_popup_at_widget () and gtk_menu_popup_at_pointer (), which * handle more common cases for popping up menus. * * @menu will be positioned at @rect, aligning their anchor points. @rect is * relative to the top-left corner of @rect_window. @rect_anchor and * @menu_anchor determine anchor points on @rect and @menu to pin together. * @menu can optionally be offset by #GtkMenu:rect-anchor-dx and * #GtkMenu:rect-anchor-dy. * * Anchors should be specified under the assumption that the text direction is * left-to-right; they will be flipped horizontally automatically if the text * direction is right-to-left. * * Other properties that influence the behaviour of this function are * #GtkMenu:anchor-hints and #GtkMenu:menu-type-hint. Connect to the * #GtkMenu::popped-up signal to find out how it was actually positioned. */ void gtk_menu_popup_at_rect (GtkMenu *menu, GdkWindow *rect_window, const GdkRectangle *rect, GdkGravity rect_anchor, GdkGravity menu_anchor, const GdkEvent *trigger_event) { GtkMenuPrivate *priv; GdkEvent *current_event = NULL; GdkDevice *device = NULL; guint button = 0; guint32 activate_time = GDK_CURRENT_TIME; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (GDK_IS_WINDOW (rect_window)); g_return_if_fail (rect); priv = menu->priv; priv->rect_window = rect_window; priv->rect = *rect; priv->widget = NULL; priv->rect_anchor = rect_anchor; priv->menu_anchor = menu_anchor; if (!trigger_event) { current_event = gtk_get_current_event (); trigger_event = current_event; } if (trigger_event) { device = get_device_for_event (trigger_event); gdk_event_get_button (trigger_event, &button); activate_time = gdk_event_get_time (trigger_event); } else g_warning ("no trigger event for menu popup"); gtk_menu_popup_internal (menu, device, NULL, NULL, NULL, NULL, NULL, button, activate_time); g_clear_object (¤t_event); } /** * gtk_menu_popup_at_widget: * @menu: the #GtkMenu to pop up * @widget: (not nullable): the #GtkWidget to align @menu with * @widget_anchor: the point on @widget to align with @menu's anchor point * @menu_anchor: the point on @menu to align with @widget's anchor point * @trigger_event: (nullable): the #GdkEvent that initiated this request or * %NULL if it's the current event * * Displays @menu and makes it available for selection. * * See gtk_menu_popup_at_pointer () to pop up a menu at the master pointer. * gtk_menu_popup_at_rect () also allows you to position a menu at an arbitrary * rectangle. * * ![](popup-anchors.png) * * @menu will be positioned at @widget, aligning their anchor points. * @widget_anchor and @menu_anchor determine anchor points on @widget and @menu * to pin together. @menu can optionally be offset by #GtkMenu:rect-anchor-dx * and #GtkMenu:rect-anchor-dy. * * Anchors should be specified under the assumption that the text direction is * left-to-right; they will be flipped horizontally automatically if the text * direction is right-to-left. * * Other properties that influence the behaviour of this function are * #GtkMenu:anchor-hints and #GtkMenu:menu-type-hint. Connect to the * #GtkMenu::popped-up signal to find out how it was actually positioned. */ void gtk_menu_popup_at_widget (GtkMenu *menu, GtkWidget *widget, GdkGravity widget_anchor, GdkGravity menu_anchor, const GdkEvent *trigger_event) { GtkMenuPrivate *priv; GdkEvent *current_event = NULL; GdkDevice *device = NULL; guint button = 0; guint32 activate_time = GDK_CURRENT_TIME; GtkWidget *parent_menu_shell = NULL; GtkWidget *parent_menu_item = NULL; g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (GTK_IS_WIDGET (widget)); priv = menu->priv; priv->rect_window = NULL; priv->widget = widget; priv->rect_anchor = widget_anchor; priv->menu_anchor = menu_anchor; if (!trigger_event) { current_event = gtk_get_current_event (); trigger_event = current_event; } if (trigger_event) { device = get_device_for_event (trigger_event); gdk_event_get_button (trigger_event, &button); activate_time = gdk_event_get_time (trigger_event); } else g_warning ("no trigger event for menu popup"); if (GTK_IS_MENU_ITEM (priv->widget)) { parent_menu_item = priv->widget; if (GTK_IS_MENU_SHELL (gtk_widget_get_parent (parent_menu_item))) parent_menu_shell = gtk_widget_get_parent (parent_menu_item); } gtk_menu_popup_internal (menu, device, parent_menu_shell, parent_menu_item, NULL, NULL, NULL, button, activate_time); g_clear_object (¤t_event); } /** * gtk_menu_popup_at_pointer: * @menu: the #GtkMenu to pop up * @trigger_event: (nullable): the #GdkEvent that initiated this request or * %NULL if it's the current event * * Displays @menu and makes it available for selection. * * See gtk_menu_popup_at_widget () to pop up a menu at a widget. * gtk_menu_popup_at_rect () also allows you to position a menu at an arbitrary * rectangle. * * @menu will be positioned at the pointer associated with @trigger_event. * * Properties that influence the behaviour of this function are * #GtkMenu:anchor-hints, #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and * #GtkMenu:menu-type-hint. Connect to the #GtkMenu::popped-up signal to find * out how it was actually positioned. */ void gtk_menu_popup_at_pointer (GtkMenu *menu, const GdkEvent *trigger_event) { GdkEvent *current_event = NULL; GdkWindow *rect_window = NULL; GdkDevice *device = NULL; GdkRectangle rect = { 0, 0, 1, 1 }; g_return_if_fail (GTK_IS_MENU (menu)); if (!trigger_event) { current_event = gtk_get_current_event (); trigger_event = current_event; } if (trigger_event) { rect_window = gdk_event_get_window (trigger_event); if (rect_window) { device = get_device_for_event (trigger_event); if (device && gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) device = gdk_device_get_associated_device (device); if (device) gdk_window_get_device_position (rect_window, device, &rect.x, &rect.y, NULL); } } else g_warning ("no trigger event for menu popup"); gtk_menu_popup_at_rect (menu, rect_window, &rect, GDK_GRAVITY_SOUTH_EAST, GDK_GRAVITY_NORTH_WEST, trigger_event); g_clear_object (¤t_event); } static void get_arrows_border (GtkMenu *menu, GtkBorder *border) { GtkMenuPrivate *priv = menu->priv; gint top_arrow_height, bottom_arrow_height; gtk_widget_measure (priv->top_arrow_widget, GTK_ORIENTATION_VERTICAL, -1, &top_arrow_height, NULL, NULL, NULL); gtk_widget_measure (priv->bottom_arrow_widget, GTK_ORIENTATION_VERTICAL, -1, &bottom_arrow_height, NULL, NULL, NULL); border->top = priv->upper_arrow_visible ? top_arrow_height : 0; border->bottom = priv->lower_arrow_visible ? bottom_arrow_height : 0; border->left = border->right = 0; } /** * gtk_menu_update_scroll_offset: * @menu: the #GtkMenu that popped up * @flipped_rect: (nullable): the position of @menu after any possible flipping * or %NULL if unknown * @final_rect: (nullable): the final position of @menu or %NULL if unknown * @flipped_x: %TRUE if the anchors were flipped horizontally * @flipped_y: %TRUE if the anchors were flipped vertically * @user_data: user data * * Updates the scroll offset of @menu based on the amount of sliding done while * positioning @menu. Connect this to the #GtkMenu::popped-up signal to keep the * contents of the menu vertically aligned with their ideal position, for combo * boxes for example. */ void gtk_menu_update_scroll_offset (GtkMenu *menu, const GdkRectangle *flipped_rect, const GdkRectangle *final_rect, gboolean flipped_x, gboolean flipped_y, gpointer user_data) { GtkBorder arrows_border; g_return_if_fail (GTK_IS_MENU (menu)); if (!flipped_rect || !final_rect) return; get_arrows_border (menu, &arrows_border); menu->priv->scroll_offset = arrows_border.top + (final_rect->y - flipped_rect->y); gtk_menu_scroll_to (menu, menu->priv->scroll_offset); } /** * gtk_menu_popdown: * @menu: a #GtkMenu * * Removes the menu from the screen. */ void gtk_menu_popdown (GtkMenu *menu) { GtkMenuPrivate *priv; GtkMenuShell *menu_shell; 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); } gtk_widget_hide (GTK_WIDGET (menu)); menu_shell->priv->have_xgrab = FALSE; gtk_grab_remove (GTK_WIDGET (menu)); _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. */ 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 (gtk_widget_is_drawable (GTK_WIDGET (menu))) gtk_menu_position (menu, FALSE); } /** * 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 gtk_menu_realize (GtkWidget *widget) { GTK_WIDGET_CLASS (gtk_menu_parent_class)->realize (widget); 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); } 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) { window = gdk_window_new_temp (gtk_widget_get_display (GTK_WIDGET (menu))); 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); menu_grab_transfer_window_destroy (menu); 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) { GtkMenuPrivate *priv; GtkMenuShell *menu_shell; GtkWidget *child, *widget; GList *children; 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; 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_measure (child, GTK_ORIENTATION_VERTICAL, part, &child_min, &child_nat, NULL, NULL); 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, const GtkAllocation *allocation, int baseline, GtkAllocation *out_clip) { GtkMenu *menu; GtkMenuPrivate *priv; GtkMenuShell *menu_shell; GtkWidget *child; GtkAllocation arrow_allocation, child_allocation; GList *children; gint x, y, i; gint width, height; GtkBorder arrow_border; 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; g_free (priv->heights); priv->heights_length = calculate_line_heights (menu, allocation->width, &priv->heights, NULL); /* refresh our cached height request */ priv->requested_height = 0; for (i = 0; i < priv->heights_length; i++) priv->requested_height += priv->heights[i]; x = allocation->x; y = allocation->y; width = allocation->width; height = allocation->height; if (menu_shell->priv->active) gtk_menu_scroll_to (menu, priv->scroll_offset); get_arrows_border (menu, &arrow_border); arrow_allocation.x = x; arrow_allocation.y = y; arrow_allocation.width = width; arrow_allocation.height = arrow_border.top; if (priv->upper_arrow_visible) gtk_widget_size_allocate (priv->top_arrow_widget, &arrow_allocation, -1, out_clip); arrow_allocation.y = height - y - arrow_border.bottom; arrow_allocation.height = arrow_border.bottom; if (priv->lower_arrow_visible) gtk_widget_size_allocate (priv->bottom_arrow_widget, &arrow_allocation, -1, out_clip); width = MAX (1, width); height = MAX (1, 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, -1, out_clip); } } } } static void gtk_menu_snapshot (GtkWidget *widget, GtkSnapshot *snapshot) { /* XXX The arrows *might* be missing here */ gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_INIT( 0, 0, gtk_widget_get_width (widget), gtk_widget_get_height (widget)), "MenuClip"); GTK_WIDGET_CLASS (gtk_menu_parent_class)->snapshot (widget, snapshot); gtk_snapshot_pop (snapshot); } 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_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline) { GtkMenu *menu = GTK_MENU (widget); GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); GtkMenuPrivate *priv = gtk_menu_get_instance_private (menu); GtkWidget *child; if (orientation == GTK_ORIENTATION_HORIZONTAL) { GList *children; guint max_toggle_size; guint max_accel_width; gint child_min, child_nat; gint min_width, nat_width; 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_measure (child, GTK_ORIENTATION_HORIZONTAL, -1, &child_min, &child_nat, NULL, NULL); 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) { GtkWidget *menu_item; GtkWidget *indicator_widget; gint indicator_width; /* Create a GtkCheckMenuItem, to query indicator size */ menu_item = gtk_check_menu_item_new (); indicator_widget = _gtk_check_menu_item_get_indicator_widget (GTK_CHECK_MENU_ITEM (menu_item)); gtk_widget_measure (indicator_widget, GTK_ORIENTATION_HORIZONTAL, -1, &indicator_width, NULL, NULL, NULL); max_toggle_size = indicator_width; gtk_widget_destroy (menu_item); g_object_ref_sink (menu_item); g_object_unref (menu_item); } 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); priv->toggle_size = max_toggle_size; priv->accel_size = max_accel_width; *minimum = min_width; *natural = nat_width; } else /* VERTICAL */ { if (for_size < 0) { gint min_width, nat_width; /* Menus are height-for-width only, just return the height * for the minimum width */ GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_HORIZONTAL, -1, &min_width, &nat_width, NULL, NULL); GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_VERTICAL, min_width, minimum, natural, minimum_baseline, natural_baseline); } else { GtkBorder arrow_border; guint *min_heights, *nat_heights; gint n_heights, i; gint min_height, single_height, nat_height; min_height = nat_height = 0; 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 += arrow_border.top + arrow_border.bottom; min_height = MIN (min_height, single_height); if (priv->have_position) { GdkDisplay *display; GdkMonitor *monitor; GdkRectangle workarea; GtkBorder border; display = gtk_widget_get_display (priv->toplevel); monitor = gdk_display_get_monitor (display, priv->monitor_num); gdk_monitor_get_workarea (monitor, &workarea); if (priv->position_y + min_height > workarea.y + workarea.height) min_height = workarea.y + workarea.height - priv->position_y; if (priv->position_y + nat_height > workarea.y + workarea.height) nat_height = workarea.y + workarea.height - priv->position_y; _gtk_window_get_shadow_width (GTK_WINDOW (priv->toplevel), &border); if (priv->position_y + border.top < workarea.y) { min_height -= workarea.y - (priv->position_y + border.top); nat_height -= workarea.y - (priv->position_y + border.top); } } *minimum = min_height; *natural = 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 void gtk_menu_pressed_cb (GtkGestureMultiPress *gesture, int n_press, double x, double y, gpointer user_data) { GtkMenu *menu = user_data; GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture)); const GdkEvent *event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence); const GdkEventButton *button_event = (GdkEventButton *)event; GdkDevice *source_device; GtkWidget *event_widget; source_device = gdk_event_get_source_device (event); event_widget = gtk_get_event_widget ((GdkEvent *)event); /* 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 (GTK_WIDGET (menu), button_event->x_root, button_event->y_root)) { gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED); return; } 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; gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED); } static void gtk_menu_released_cb (GtkGestureMultiPress *gesture, int n_press, double x, double y, gpointer user_data) { GtkMenu *menu = user_data; GtkMenuPrivate *priv = menu->priv; GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture)); const GdkEvent *event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence); const GdkEventButton *button_event = (GdkEventButton *)event; if (priv->ignore_button_release) { priv->ignore_button_release = FALSE; gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED); return; } /* Don't pass down to menu shell if a non-menuitem part of the menu * was clicked (see comment in gtk_menu_pressed_cb()). */ if (GTK_IS_MENU_SHELL (gtk_get_event_widget ((GdkEvent *) event)) && pointer_in_menu_window (GTK_WIDGET (menu), button_event->x_root, button_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 or release in GtkMenuShell. * See bug #449371. */ if (GTK_MENU_SHELL (menu)->priv->active) GTK_MENU_SHELL (menu)->priv->button = 0; gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED); } } 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) { GtkAllocation allocation; int w, h; gtk_widget_get_outer_allocation (widget, &allocation); w = allocation.width; h = allocation.height; 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 void gtk_menu_motion (GtkEventController *controller, double x, double y, gpointer user_data) { GtkWidget *menu_item; GtkMenu *menu; GtkMenuShell *menu_shell; GtkWidget *parent; GdkDevice *source_device; GdkEventMotion *event; menu_item = GTK_WIDGET (user_data); event = (GdkEventMotion *)gtk_get_current_event (); /* FIXME: controller event */ source_device = gdk_event_get_source_device ((GdkEvent *)event); if (GTK_IS_MENU (menu_item) && gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) { GtkMenuPrivate *priv = GTK_MENU(menu_item)->priv; if (priv->ignore_button_release) priv->ignore_button_release = FALSE; gtk_menu_handle_scrolling (GTK_MENU (menu_item), 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'. */ parent = gtk_widget_get_parent (menu_item); if (!GTK_IS_MENU_ITEM (menu_item) || !GTK_IS_MENU (parent)) return; 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; /* 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; /* 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); } } static void gtk_menu_scroll_by (GtkMenu *menu, gint step) { GtkMenuPrivate *priv = menu->priv; GtkBorder arrow_border; GtkWidget *widget; gint offset; gint view_height; widget = GTK_WIDGET (menu); offset = priv->scroll_offset + step; get_arrows_border (menu, &arrow_border); /* 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; /* Since arrows are shown, reduce view height even more */ 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 void gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll, gdouble dx, gdouble dy, GtkMenu *menu) { gtk_menu_scroll_by (menu, dy * MENU_SCROLL_STEP2); } static void get_arrows_sensitive_area (GtkMenu *menu, GdkRectangle *upper, GdkRectangle *lower) { GtkMenuPrivate *priv = menu->priv; GtkWidget *widget = GTK_WIDGET (menu); GdkWindow *window; gint width, height; gint win_x, win_y; gint top_arrow_height, bottom_arrow_height; gtk_widget_measure (priv->top_arrow_widget, GTK_ORIENTATION_VERTICAL, -1, &top_arrow_height, NULL, NULL, NULL); gtk_widget_measure (priv->bottom_arrow_widget, GTK_ORIENTATION_VERTICAL, -1, &bottom_arrow_height, NULL, NULL, NULL); window = gtk_widget_get_window (widget); width = gdk_window_get_width (window); height = gdk_window_get_height (window); gdk_window_get_position (window, &win_x, &win_y); if (upper) { upper->x = win_x; upper->y = win_y; upper->width = width; upper->height = top_arrow_height; } if (lower) { lower->x = win_x; lower->y = win_y + height - bottom_arrow_height; lower->width = width; lower->height = bottom_arrow_height; } } 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 && (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) { 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 = g_timeout_add (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; gtk_widget_set_state_flags (priv->top_arrow_widget, arrow_state, TRUE); } } } /* lower arrow handling */ get_arrows_sensitive_area (menu, NULL, &rect); in_arrow = FALSE; if (priv->lower_arrow_visible && (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) { 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 = g_timeout_add (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; gtk_widget_set_state_flags (priv->bottom_arrow_widget, arrow_state, TRUE); } } } } static void gtk_menu_enter (GtkEventController *controller, double x, double y, gpointer user_data) { GdkDevice *source_device; GdkEventCrossing *event; event = (GdkEventCrossing *)gtk_get_current_event (); if (event->mode == GDK_CROSSING_GTK_GRAB || event->mode == GDK_CROSSING_GTK_UNGRAB || event->mode == GDK_CROSSING_STATE_CHANGED) return; source_device = gdk_event_get_source_device ((GdkEvent *) event); if (gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (user_data); if (!menu_shell->priv->ignore_enter) gtk_menu_handle_scrolling (GTK_MENU (user_data), event->x_root, event->y_root, TRUE, TRUE); } } static void gtk_menu_leave (GtkEventController *controller, gpointer user_data) { GtkMenu *menu; GdkDevice *source_device; GdkEventCrossing *event; event = (GdkEventCrossing *)gtk_get_current_event (); if (event->mode == GDK_CROSSING_GTK_GRAB || event->mode == GDK_CROSSING_GTK_UNGRAB || event->mode == GDK_CROSSING_STATE_CHANGED) return; menu = GTK_MENU (user_data); if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root)) return; 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); } 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 ((guint) gdk_event_get_event_type (event)) { 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; } } 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_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_legacy (GtkMenu *menu, gboolean set_scroll_offset) { GtkMenuPrivate *priv = menu->priv; GtkWidget *widget; GtkRequisition requisition; gint x, y; gint scroll_offset; GdkDisplay *display; GdkMonitor *monitor; GdkRectangle workarea; gint monitor_num; GdkDevice *pointer; GtkBorder border; gint i; widget = GTK_WIDGET (menu); display = gtk_widget_get_display (widget); pointer = _gtk_menu_shell_get_grab_device (GTK_MENU_SHELL (menu)); gdk_device_get_position (pointer, &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); monitor = gdk_display_get_monitor_at_point (display, x, y); monitor_num = 0; for (i = 0; ; i++) { GdkMonitor *m = gdk_display_get_monitor (display, i); if (m == monitor) { monitor_num = i; break; } if (m == NULL) break; } priv->monitor_num = monitor_num; 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 = monitor_num; monitor = gdk_display_get_monitor (display, priv->monitor_num); gdk_monitor_get_workarea (monitor, &workarea); } else { gint space_left, space_right, space_above, space_below; gint needed_width; gint needed_height; gboolean rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL); /* 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. */ monitor = gdk_display_get_monitor (display, priv->monitor_num); gdk_monitor_get_workarea (monitor, &workarea); space_left = x - workarea.x; space_right = workarea.x + workarea.width - x - 1; space_above = y - workarea.y; space_below = workarea.y + workarea.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; if (needed_width <= space_left || needed_width <= space_right) { if ((rtl && needed_width <= space_left) || (!rtl && needed_width > space_right)) { /* position left */ x = x - requisition.width + 1; } else { /* position right */ } /* x is clamped on-screen further down */ } else if (requisition.width <= workarea.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 = workarea.x; } else { /* right justify */ x = workarea.x + workarea.width - requisition.width; } } else /* menu is simply too big for the monitor */ { if (rtl) { /* right justify */ x = workarea.x + workarea.width - requisition.width; } else { /* left justify */ x = workarea.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; if (needed_height <= space_above || needed_height <= space_below) { if (needed_height > space_below) y = y - requisition.height + 1; y = CLAMP (y, workarea.y, workarea.y + workarea.height - requisition.height); } else if (needed_height > space_below && needed_height > space_above) { if (space_below >= space_above) y = workarea.y + workarea.height - requisition.height; else y = workarea.y; } else { y = workarea.y; } } scroll_offset = 0; if (y + requisition.height > workarea.y + workarea.height) { if (priv->initially_pushed_in) scroll_offset += (workarea.y + workarea.height) - requisition.height - y; y = (workarea.y + workarea.height) - requisition.height; } if (y < workarea.y) { if (priv->initially_pushed_in) scroll_offset += workarea.y - y; y = workarea.y; } x = CLAMP (x, workarea.x, MAX (workarea.x, workarea.x + workarea.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 (priv->toplevel), x, y); if (set_scroll_offset) priv->scroll_offset = scroll_offset; } static GdkGravity get_horizontally_flipped_anchor (GdkGravity anchor) { switch (anchor) { case GDK_GRAVITY_STATIC: case GDK_GRAVITY_NORTH_WEST: return GDK_GRAVITY_NORTH_EAST; case GDK_GRAVITY_NORTH: return GDK_GRAVITY_NORTH; case GDK_GRAVITY_NORTH_EAST: return GDK_GRAVITY_NORTH_WEST; case GDK_GRAVITY_WEST: return GDK_GRAVITY_EAST; case GDK_GRAVITY_CENTER: return GDK_GRAVITY_CENTER; case GDK_GRAVITY_EAST: return GDK_GRAVITY_WEST; case GDK_GRAVITY_SOUTH_WEST: return GDK_GRAVITY_SOUTH_EAST; case GDK_GRAVITY_SOUTH: return GDK_GRAVITY_SOUTH; case GDK_GRAVITY_SOUTH_EAST: return GDK_GRAVITY_SOUTH_WEST; default: g_warning ("unknown GdkGravity: %d", anchor); return anchor; } } static void gtk_menu_position (GtkMenu *menu, gboolean set_scroll_offset) { GtkMenuPrivate *priv = menu->priv; GdkWindow *rect_window = NULL; GdkRectangle rect; GtkTextDirection text_direction = GTK_TEXT_DIR_NONE; GdkGravity rect_anchor; GdkGravity menu_anchor; GdkAnchorHints anchor_hints; gint rect_anchor_dx, rect_anchor_dy; GdkWindow *toplevel; gboolean emulated_move_to_rect = FALSE; rect_anchor = priv->rect_anchor; menu_anchor = priv->menu_anchor; anchor_hints = priv->anchor_hints; rect_anchor_dx = priv->rect_anchor_dx; rect_anchor_dy = priv->rect_anchor_dy; if (priv->rect_window) { rect_window = priv->rect_window; rect = priv->rect; } else if (priv->widget) { rect_window = gtk_widget_get_window (priv->widget); gtk_widget_get_window_allocation (priv->widget, &rect); text_direction = gtk_widget_get_direction (priv->widget); } else if (!priv->position_func) { GtkWidget *attach_widget; GdkDevice *grab_device; /* * One of the legacy gtk_menu_popup*() functions were used to popup but * without a custom positioning function, so make an attempt to let the * backend do the position constraining when required conditions are met. */ grab_device = _gtk_menu_shell_get_grab_device (GTK_MENU_SHELL (menu)); attach_widget = gtk_menu_get_attach_widget (menu); if (grab_device && attach_widget) { rect = (GdkRectangle) { 0, 0, 1, 1 }; rect_window = gtk_widget_get_window (attach_widget); gdk_window_get_device_position (rect_window, grab_device, &rect.x, &rect.y, NULL); text_direction = gtk_widget_get_direction (attach_widget); rect_anchor = GDK_GRAVITY_SOUTH_EAST; menu_anchor = GDK_GRAVITY_NORTH_WEST; anchor_hints = GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE | GDK_ANCHOR_RESIZE; rect_anchor_dx = 0; rect_anchor_dy = 0; emulated_move_to_rect = TRUE; } } if (!rect_window) { gtk_menu_position_legacy (menu, set_scroll_offset); return; } /* Realize so we have the proper width and height to figure out * the right place to popup the menu. */ gtk_widget_realize (priv->toplevel); if (!gtk_widget_get_visible (priv->toplevel)) gtk_window_set_type_hint (GTK_WINDOW (priv->toplevel), priv->menu_type_hint); if (text_direction == GTK_TEXT_DIR_NONE) text_direction = gtk_widget_get_direction (GTK_WIDGET (menu)); if (text_direction == GTK_TEXT_DIR_RTL) { rect_anchor = get_horizontally_flipped_anchor (rect_anchor); menu_anchor = get_horizontally_flipped_anchor (menu_anchor); } toplevel = gtk_widget_get_window (priv->toplevel); gdk_window_set_transient_for (toplevel, rect_window); g_signal_handlers_disconnect_by_func (toplevel, moved_to_rect_cb, menu); if (!emulated_move_to_rect) g_signal_connect (toplevel, "moved-to-rect", G_CALLBACK (moved_to_rect_cb), menu); gdk_window_move_to_rect (toplevel, &rect, rect_anchor, menu_anchor, anchor_hints, rect_anchor_dx, rect_anchor_dy); } 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; GtkCssNode *top_arrow_node, *bottom_arrow_node; GtkStateFlags state; gtk_menu_remove_scroll_timeout (menu); priv->upper_arrow_prelight = FALSE; priv->lower_arrow_prelight = FALSE; top_arrow_node = gtk_widget_get_css_node (priv->top_arrow_widget); state = gtk_css_node_get_state (top_arrow_node); gtk_css_node_set_state (top_arrow_node, state & ~GTK_STATE_FLAG_PRELIGHT); bottom_arrow_node = gtk_widget_get_css_node (priv->bottom_arrow_widget); state = gtk_css_node_get_state (bottom_arrow_node); gtk_css_node_set_state (bottom_arrow_node, state & ~GTK_STATE_FLAG_PRELIGHT); } static void gtk_menu_scroll_to (GtkMenu *menu, gint offset) { GtkMenuPrivate *priv = menu->priv; GtkCssNode *top_arrow_node, *bottom_arrow_node; top_arrow_node = gtk_widget_get_css_node (priv->top_arrow_widget); gtk_css_node_set_visible (top_arrow_node, priv->upper_arrow_visible); gtk_css_node_set_state (top_arrow_node, priv->upper_arrow_state); bottom_arrow_node = gtk_widget_get_css_node (priv->bottom_arrow_widget); gtk_css_node_set_visible (bottom_arrow_node, priv->lower_arrow_visible); gtk_css_node_set_state (bottom_arrow_node, priv->lower_arrow_state); 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)) { y = priv->scroll_offset; height = gdk_window_get_height (gtk_widget_get_window (widget)); 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); arrow_height = arrow_border.top + arrow_border.bottom; if (child_offset + child_height > y + height - arrow_height) { arrow_height = arrow_border.bottom + 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); } /** * gtk_menu_set_display: * @menu: a #GtkMenu * @display: (allow-none): a #GdkDisplay, or %NULL if the display should be * determined by the widget the menu is attached to * * Sets the #GdkDisplay on which the menu will be displayed. */ void gtk_menu_set_display (GtkMenu *menu, GdkDisplay *display) { g_return_if_fail (GTK_IS_MENU (menu)); g_return_if_fail (display == NULL || GDK_IS_DISPLAY (display)); g_object_set_data (G_OBJECT (menu), I_("gtk-menu-explicit-display"), display); if (display) { menu_change_display (menu, display); } else { GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu); if (attach_widget) attach_widget_display_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(). */ 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_insert_before (child, GTK_WIDGET (menu), menu->priv->bottom_arrow_widget); 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; case GTK_MENU_DIR_NEXT: case GTK_MENU_DIR_PREV: default: break; } } /* 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) { GtkAllocation allocation; GtkWidget *widget = GTK_WIDGET (menu); GtkBorder arrow_border; gint menu_height; gtk_widget_get_allocation (widget, &allocation); menu_height = allocation.height; 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; if (child_offset + child_requisition.height > y) return child; } child_offset += child_requisition.height; } } return child; } static gint get_menu_height (GtkMenu *menu) { GtkMenuPrivate *priv = menu->priv; GtkBorder arrow_border; gint height; height = priv->requested_height; 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 ((guint) 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; 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; 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_monitor_get_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. */ 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 */ gint gtk_menu_get_monitor (GtkMenu *menu) { g_return_val_if_fail (GTK_IS_MENU (menu), -1); return menu->priv->monitor_num; } /** * gtk_menu_place_on_monitor: * @menu: a #GtkMenu * @monitor: the monitor to place the menu on * * Places @menu on the given monitor. */ void gtk_menu_place_on_monitor (GtkMenu *menu, GdkMonitor *monitor) { GdkDisplay *display; gint i, monitor_num; g_return_if_fail (GTK_IS_MENU (menu)); display = gtk_widget_get_display (GTK_WIDGET (menu)); monitor_num = 0; for (i = 0; ; i++) { GdkMonitor *m = gdk_display_get_monitor (display, i); if (m == monitor) { monitor_num = i; break; } if (m == NULL) break; } gtk_menu_set_monitor (menu, 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. */ 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_grab (group); 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. */ 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 */ 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 */ 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; }