/* * Copyright (c) 2013 Red Hat, Inc. * * This program 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 program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #include "config.h" #include "gtkheaderbarprivate.h" #include "gtkbox.h" #include "gtkbutton.h" #include "gtkbuildable.h" #include "gtkcenterlayout.h" #include "gtkcontainerprivate.h" #include "gtkcssnodeprivate.h" #include "gtkimage.h" #include "gtkintl.h" #include "gtklabel.h" #include "gtkmenubutton.h" #include "gtkprivate.h" #include "gtkseparator.h" #include "gtksizerequest.h" #include "gtktypebuiltins.h" #include "gtkwidgetprivate.h" #include "gtkwindowprivate.h" #include "gtknative.h" #include "gtkmenubuttonprivate.h" #include "a11y/gtkcontaineraccessible.h" #include /** * SECTION:gtkheaderbar * @Short_description: A box with a centered child * @Title: GtkHeaderBar * @See_also: #GtkBox, #GtkActionBar * * GtkHeaderBar is similar to a horizontal #GtkBox. It allows children to * be placed at the start or the end. In addition, it allows a title and * subtitle to be displayed. The title will be centered with respect to * the width of the box, even if the children at either side take up * different amounts of space. The height of the titlebar will be * set to provide sufficient space for the subtitle, even if none is * currently set. If a subtitle is not needed, the space reservation * can be turned off with gtk_header_bar_set_has_subtitle(). * * GtkHeaderBar can add typical window frame controls, such as minimize, * maximize and close buttons, or the window icon. * * For these reasons, GtkHeaderBar is the natural choice for use as the custom * titlebar widget of a #GtkWindow (see gtk_window_set_titlebar()), as it gives * features typical of titlebars while allowing the addition of child widgets. * * # CSS nodes * * |[ * headerbar * ├── box.start * │ ╰── box * │ ├── [image.titlebutton.icon] * │ ├── [menubutton.titlebutton.menu] * │ ├── [button.titlebutton.minimize] * │ ├── [button.titlebutton.maximize] * │ ╰── [button.titlebutton.close] * ├── [Custom Title] * ╰── box.end * ]| * * A #GtkHeaderBar's CSS node is called headerbar. It contains two box subnodes at the start * and end of the headerbar, as well as a center node that represents the title. * * The titlebuttons get their own box subnode, either in the start box or in the end box. * Which of the title buttons exist and where they are placed exactly depends on the * desktop environment. */ #define MIN_TITLE_CHARS 5 typedef struct _GtkHeaderBarPrivate GtkHeaderBarPrivate; typedef struct _GtkHeaderBarClass GtkHeaderBarClass; struct _GtkHeaderBar { GtkContainer container; }; struct _GtkHeaderBarClass { GtkContainerClass parent_class; }; struct _GtkHeaderBarPrivate { GtkWidget *start_box; GtkWidget *end_box; gchar *title; gchar *subtitle; GtkWidget *title_label; GtkWidget *subtitle_label; GtkWidget *label_box; GtkWidget *label_sizing_box; GtkWidget *subtitle_sizing_label; GtkWidget *custom_title; gboolean has_subtitle; gboolean show_title_buttons; gchar *decoration_layout; gboolean decoration_layout_set; gboolean track_default_decoration; GtkWidget *titlebar_start_box; GtkWidget *titlebar_end_box; GtkWidget *titlebar_start_separator; GtkWidget *titlebar_end_separator; GtkWidget *titlebar_icon; GdkSurfaceState state; guint shows_app_menu : 1; }; enum { PROP_0, PROP_TITLE, PROP_SUBTITLE, PROP_HAS_SUBTITLE, PROP_CUSTOM_TITLE, PROP_SHOW_TITLE_BUTTONS, PROP_DECORATION_LAYOUT, PROP_DECORATION_LAYOUT_SET, LAST_PROP }; static GParamSpec *header_bar_props[LAST_PROP] = { NULL, }; static void gtk_header_bar_buildable_init (GtkBuildableIface *iface); G_DEFINE_TYPE_WITH_CODE (GtkHeaderBar, gtk_header_bar, GTK_TYPE_CONTAINER, G_ADD_PRIVATE (GtkHeaderBar) G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_header_bar_buildable_init)); static void init_sizing_box (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkWidget *w; /* We use this box to always request size for the two labels (title * and subtitle) as if they were always visible, but then allocate * the real label box with its actual size, to keep it center-aligned * in case we have only the title. */ w = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); priv->label_sizing_box = g_object_ref_sink (w); w = gtk_label_new (NULL); gtk_widget_add_css_class (w, GTK_STYLE_CLASS_TITLE); gtk_container_add (GTK_CONTAINER (priv->label_sizing_box), w); gtk_label_set_wrap (GTK_LABEL (w), FALSE); gtk_label_set_single_line_mode (GTK_LABEL (w), TRUE); gtk_label_set_ellipsize (GTK_LABEL (w), PANGO_ELLIPSIZE_END); gtk_label_set_width_chars (GTK_LABEL (w), MIN_TITLE_CHARS); w = gtk_label_new (NULL); gtk_widget_add_css_class (w, GTK_STYLE_CLASS_SUBTITLE); gtk_container_add (GTK_CONTAINER (priv->label_sizing_box), w); gtk_label_set_wrap (GTK_LABEL (w), FALSE); gtk_label_set_single_line_mode (GTK_LABEL (w), TRUE); gtk_label_set_ellipsize (GTK_LABEL (w), PANGO_ELLIPSIZE_END); gtk_widget_set_visible (w, priv->has_subtitle || (priv->subtitle && priv->subtitle[0])); priv->subtitle_sizing_label = w; } static GtkWidget * create_title_box (const char *title, const char *subtitle, GtkWidget **ret_title_label, GtkWidget **ret_subtitle_label) { GtkWidget *label_box; GtkWidget *title_label; GtkWidget *subtitle_label; label_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); gtk_widget_set_valign (label_box, GTK_ALIGN_CENTER); title_label = gtk_label_new (title); gtk_widget_add_css_class (title_label, GTK_STYLE_CLASS_TITLE); gtk_label_set_wrap (GTK_LABEL (title_label), FALSE); gtk_label_set_single_line_mode (GTK_LABEL (title_label), TRUE); gtk_label_set_ellipsize (GTK_LABEL (title_label), PANGO_ELLIPSIZE_END); gtk_container_add (GTK_CONTAINER (label_box), title_label); gtk_label_set_width_chars (GTK_LABEL (title_label), MIN_TITLE_CHARS); subtitle_label = gtk_label_new (subtitle); gtk_widget_add_css_class (subtitle_label, GTK_STYLE_CLASS_SUBTITLE); gtk_label_set_wrap (GTK_LABEL (subtitle_label), FALSE); gtk_label_set_single_line_mode (GTK_LABEL (subtitle_label), TRUE); gtk_label_set_ellipsize (GTK_LABEL (subtitle_label), PANGO_ELLIPSIZE_END); gtk_container_add (GTK_CONTAINER (label_box), subtitle_label); gtk_widget_set_visible (subtitle_label, subtitle && subtitle[0]); if (ret_title_label) *ret_title_label = title_label; if (ret_subtitle_label) *ret_subtitle_label = subtitle_label; return label_box; } gboolean _gtk_header_bar_update_window_icon (GtkHeaderBar *bar, GtkWindow *window) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GdkPaintable *paintable; gint scale; if (priv->titlebar_icon == NULL) return FALSE; scale = gtk_widget_get_scale_factor (priv->titlebar_icon); if (GTK_IS_BUTTON (gtk_widget_get_parent (priv->titlebar_icon))) paintable = gtk_window_get_icon_for_size (window, 16 * scale); else paintable = gtk_window_get_icon_for_size (window, 20 * scale); if (paintable) { gtk_image_set_from_paintable (GTK_IMAGE (priv->titlebar_icon), paintable); g_object_unref (paintable); gtk_widget_show (priv->titlebar_icon); return TRUE; } return FALSE; } static void _gtk_header_bar_update_separator_visibility (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); gboolean have_visible_at_start = FALSE; gboolean have_visible_at_end = FALSE; GList *l; GList *children; children = gtk_container_get_children (GTK_CONTAINER (priv->start_box)); for (l = children; l; l = l->next) { if (l->data != priv->titlebar_start_box && gtk_widget_get_visible (l->data)) have_visible_at_start = TRUE; } g_list_free (children); children = gtk_container_get_children (GTK_CONTAINER (priv->end_box)); for (l = children; l; l = l->next) { if (l->data != priv->titlebar_end_box && gtk_widget_get_visible (l->data)) have_visible_at_end = TRUE; } g_list_free (children); if (priv->titlebar_start_separator != NULL) gtk_widget_set_visible (priv->titlebar_start_separator, have_visible_at_start); if (priv->titlebar_end_separator != NULL) gtk_widget_set_visible (priv->titlebar_end_separator, have_visible_at_end); } void _gtk_header_bar_update_window_buttons (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkWidget *widget = GTK_WIDGET (bar); GtkWidget *toplevel; GtkWindow *window; gchar *layout_desc; gchar **tokens, **t; gint i, j; GMenuModel *menu; gboolean shown_by_shell; gboolean is_sovereign_window; if (!gtk_widget_get_realized (widget)) return; toplevel = GTK_WIDGET (gtk_widget_get_root (widget)); if (!GTK_IS_WINDOW (toplevel)) return; if (priv->titlebar_start_box) { gtk_widget_unparent (priv->titlebar_start_box); priv->titlebar_start_box = NULL; priv->titlebar_start_separator = NULL; } if (priv->titlebar_end_box) { gtk_widget_unparent (priv->titlebar_end_box); priv->titlebar_end_box = NULL; priv->titlebar_end_separator = NULL; } priv->titlebar_icon = NULL; priv->shows_app_menu = FALSE; if (!priv->show_title_buttons) return; g_object_get (gtk_widget_get_settings (widget), "gtk-shell-shows-app-menu", &shown_by_shell, "gtk-decoration-layout", &layout_desc, NULL); if (priv->decoration_layout_set) { g_free (layout_desc); layout_desc = g_strdup (priv->decoration_layout); } window = GTK_WINDOW (toplevel); if (!shown_by_shell && gtk_window_get_application (window)) menu = gtk_application_get_app_menu (gtk_window_get_application (window)); else menu = NULL; is_sovereign_window = !gtk_window_get_modal (window) && gtk_window_get_transient_for (window) == NULL; tokens = g_strsplit (layout_desc, ":", 2); if (tokens) { for (i = 0; i < 2; i++) { GtkWidget *box; GtkWidget *separator; int n_children = 0; if (tokens[i] == NULL) break; t = g_strsplit (tokens[i], ",", -1); separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL); gtk_widget_add_css_class (separator, "titlebutton"); box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); for (j = 0; t[j]; j++) { GtkWidget *button = NULL; GtkWidget *image = NULL; AtkObject *accessible; if (strcmp (t[j], "icon") == 0 && is_sovereign_window) { button = gtk_image_new (); gtk_widget_set_valign (button, GTK_ALIGN_CENTER); priv->titlebar_icon = button; gtk_widget_add_css_class (button, "titlebutton"); gtk_widget_add_css_class (button, "icon"); if (!_gtk_header_bar_update_window_icon (bar, window)) { g_object_ref_sink (button); g_object_unref (button); priv->titlebar_icon = NULL; button = NULL; } } else if (strcmp (t[j], "menu") == 0 && menu != NULL && is_sovereign_window) { button = gtk_menu_button_new (); gtk_widget_set_valign (button, GTK_ALIGN_CENTER); gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (button), menu); gtk_widget_add_css_class (button, "titlebutton"); gtk_widget_add_css_class (button, "menu"); image = gtk_image_new (); gtk_menu_button_add_child (GTK_MENU_BUTTON (button), image); gtk_widget_set_can_focus (button, FALSE); accessible = gtk_widget_get_accessible (button); if (GTK_IS_ACCESSIBLE (accessible)) atk_object_set_name (accessible, _("Application menu")); priv->titlebar_icon = image; if (!_gtk_header_bar_update_window_icon (bar, window)) gtk_image_set_from_icon_name (GTK_IMAGE (priv->titlebar_icon), "application-x-executable-symbolic"); priv->shows_app_menu = TRUE; } else if (strcmp (t[j], "minimize") == 0 && is_sovereign_window) { button = gtk_button_new (); gtk_widget_set_valign (button, GTK_ALIGN_CENTER); gtk_widget_add_css_class (button, "titlebutton"); gtk_widget_add_css_class (button, "minimize"); image = gtk_image_new_from_icon_name ("window-minimize-symbolic"); g_object_set (image, "use-fallback", TRUE, NULL); gtk_container_add (GTK_CONTAINER (button), image); gtk_widget_set_can_focus (button, FALSE); g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_window_minimize), window); accessible = gtk_widget_get_accessible (button); if (GTK_IS_ACCESSIBLE (accessible)) atk_object_set_name (accessible, _("Minimize")); } else if (strcmp (t[j], "maximize") == 0 && gtk_window_get_resizable (window) && is_sovereign_window) { const gchar *icon_name; gboolean maximized = gtk_window_is_maximized (window); icon_name = maximized ? "window-restore-symbolic" : "window-maximize-symbolic"; button = gtk_button_new (); gtk_widget_set_valign (button, GTK_ALIGN_CENTER); gtk_widget_add_css_class (button, "titlebutton"); gtk_widget_add_css_class (button, "maximize"); image = gtk_image_new_from_icon_name (icon_name); g_object_set (image, "use-fallback", TRUE, NULL); gtk_container_add (GTK_CONTAINER (button), image); gtk_widget_set_can_focus (button, FALSE); g_signal_connect_swapped (button, "clicked", G_CALLBACK (_gtk_window_toggle_maximized), window); accessible = gtk_widget_get_accessible (button); if (GTK_IS_ACCESSIBLE (accessible)) atk_object_set_name (accessible, maximized ? _("Restore") : _("Maximize")); } else if (strcmp (t[j], "close") == 0 && gtk_window_get_deletable (window)) { button = gtk_button_new (); gtk_widget_set_valign (button, GTK_ALIGN_CENTER); image = gtk_image_new_from_icon_name ("window-close-symbolic"); gtk_widget_add_css_class (button, "titlebutton"); gtk_widget_add_css_class (button, "close"); g_object_set (image, "use-fallback", TRUE, NULL); gtk_container_add (GTK_CONTAINER (button), image); gtk_widget_set_can_focus (button, FALSE); g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_window_close), window); accessible = gtk_widget_get_accessible (button); if (GTK_IS_ACCESSIBLE (accessible)) atk_object_set_name (accessible, _("Close")); } if (button) { gtk_container_add (GTK_CONTAINER (box), button); n_children ++; } } g_strfreev (t); if (n_children == 0) { g_object_ref_sink (box); g_object_unref (box); g_object_ref_sink (separator); g_object_unref (separator); continue; } gtk_container_add (GTK_CONTAINER (box), separator); if (i == 1) gtk_box_reorder_child_after (GTK_BOX (box), separator, NULL); if (i == 0) gtk_widget_add_css_class (box, GTK_STYLE_CLASS_LEFT); else gtk_widget_add_css_class (box, GTK_STYLE_CLASS_RIGHT); if (i == 0) { priv->titlebar_start_box = box; priv->titlebar_start_separator = separator; gtk_container_add (GTK_CONTAINER (priv->start_box), box); } else { priv->titlebar_end_box = box; priv->titlebar_end_separator = separator; gtk_container_add (GTK_CONTAINER (priv->end_box), box); } } g_strfreev (tokens); } g_free (layout_desc); _gtk_header_bar_update_separator_visibility (bar); } gboolean _gtk_header_bar_shows_app_menu (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); return priv->show_title_buttons && priv->shows_app_menu; } static void update_default_decoration (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkLayoutManager *layout = gtk_widget_get_layout_manager (GTK_WIDGET (bar)); gboolean have_children = FALSE; /* Check whether we have any child widgets that we didn't add ourselves */ if (gtk_center_layout_get_center_widget (GTK_CENTER_LAYOUT (layout)) != NULL) { have_children = TRUE; } else { GtkWidget *w; for (w = _gtk_widget_get_first_child (priv->start_box); w != NULL; w = _gtk_widget_get_next_sibling (w)) { if (w != priv->titlebar_start_box) { have_children = TRUE; break; } } if (!have_children) for (w = _gtk_widget_get_first_child (priv->end_box); w != NULL; w = _gtk_widget_get_next_sibling (w)) { if (w != priv->titlebar_end_box) { have_children = TRUE; break; } } } if (have_children || priv->custom_title != NULL) gtk_widget_remove_css_class (GTK_WIDGET (bar), "default-decoration"); else gtk_widget_add_css_class (GTK_WIDGET (bar), "default-decoration"); } void _gtk_header_bar_track_default_decoration (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); priv->track_default_decoration = TRUE; update_default_decoration (bar); } static void construct_label_box (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkLayoutManager *layout = gtk_widget_get_layout_manager (GTK_WIDGET (bar)); g_assert (priv->label_box == NULL); priv->label_box = create_title_box (priv->title, priv->subtitle, &priv->title_label, &priv->subtitle_label); gtk_widget_insert_after (priv->label_box, GTK_WIDGET (bar), priv->start_box); gtk_center_layout_set_center_widget (GTK_CENTER_LAYOUT (layout), priv->label_box); } /** * gtk_header_bar_set_title: * @bar: a #GtkHeaderBar * @title: (allow-none): a title, or %NULL * * Sets the title of the #GtkHeaderBar. The title should help a user * identify the current view. A good title should not include the * application name. */ void gtk_header_bar_set_title (GtkHeaderBar *bar, const gchar *title) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); gchar *new_title; g_return_if_fail (GTK_IS_HEADER_BAR (bar)); new_title = g_strdup (title); g_free (priv->title); priv->title = new_title; if (priv->title_label != NULL) { gtk_label_set_label (GTK_LABEL (priv->title_label), priv->title); gtk_widget_queue_resize (GTK_WIDGET (bar)); } g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_TITLE]); } /** * gtk_header_bar_get_title: * @bar: a #GtkHeaderBar * * Retrieves the title of the header. See gtk_header_bar_set_title(). * * Returns: (nullable): the title of the header, or %NULL if none has * been set explicitly. The returned string is owned by the widget * and must not be modified or freed. */ const gchar * gtk_header_bar_get_title (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), NULL); return priv->title; } /** * gtk_header_bar_set_subtitle: * @bar: a #GtkHeaderBar * @subtitle: (allow-none): a subtitle, or %NULL * * Sets the subtitle of the #GtkHeaderBar. The title should give a user * an additional detail to help him identify the current view. * * Note that GtkHeaderBar by default reserves room for the subtitle, * even if none is currently set. If this is not desired, set the * #GtkHeaderBar:has-subtitle property to %FALSE. */ void gtk_header_bar_set_subtitle (GtkHeaderBar *bar, const gchar *subtitle) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); gchar *new_subtitle; g_return_if_fail (GTK_IS_HEADER_BAR (bar)); new_subtitle = g_strdup (subtitle); g_free (priv->subtitle); priv->subtitle = new_subtitle; if (priv->subtitle_label != NULL) { gtk_label_set_label (GTK_LABEL (priv->subtitle_label), priv->subtitle); gtk_widget_set_visible (priv->subtitle_label, priv->subtitle && priv->subtitle[0]); gtk_widget_queue_resize (GTK_WIDGET (bar)); } gtk_widget_set_visible (priv->subtitle_sizing_label, priv->has_subtitle || (priv->subtitle && priv->subtitle[0])); g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_SUBTITLE]); } /** * gtk_header_bar_get_subtitle: * @bar: a #GtkHeaderBar * * Retrieves the subtitle of the header. See gtk_header_bar_set_subtitle(). * * Returns: (nullable): the subtitle of the header, or %NULL if none has * been set explicitly. The returned string is owned by the widget * and must not be modified or freed. */ const gchar * gtk_header_bar_get_subtitle (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), NULL); return priv->subtitle; } /** * gtk_header_bar_set_custom_title: * @bar: a #GtkHeaderBar * @title_widget: (allow-none): a custom widget to use for a title * * Sets a custom title for the #GtkHeaderBar. * * The title should help a user identify the current view. This * supersedes any title set by gtk_header_bar_set_title() or * gtk_header_bar_set_subtitle(). To achieve the same style as * the builtin title and subtitle, use the “title” and “subtitle” * style classes. * * You should set the custom title to %NULL, for the header title * label to be visible again. */ void gtk_header_bar_set_custom_title (GtkHeaderBar *bar, GtkWidget *title_widget) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); g_return_if_fail (GTK_IS_HEADER_BAR (bar)); if (title_widget) g_return_if_fail (GTK_IS_WIDGET (title_widget)); /* No need to do anything if the custom widget stays the same */ if (priv->custom_title == title_widget) return; if (priv->custom_title) { GtkWidget *custom = priv->custom_title; priv->custom_title = NULL; gtk_widget_unparent (custom); } if (title_widget != NULL) { GtkLayoutManager *layout = gtk_widget_get_layout_manager (GTK_WIDGET (bar)); priv->custom_title = title_widget; gtk_widget_insert_after (priv->custom_title, GTK_WIDGET (bar), priv->start_box); gtk_center_layout_set_center_widget (GTK_CENTER_LAYOUT (layout), title_widget); if (priv->label_box != NULL) { GtkWidget *label_box = priv->label_box; priv->label_box = NULL; priv->title_label = NULL; priv->subtitle_label = NULL; gtk_widget_unparent (label_box); } } else { if (priv->label_box == NULL) construct_label_box (bar); } g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_CUSTOM_TITLE]); } /** * gtk_header_bar_get_custom_title: * @bar: a #GtkHeaderBar * * Retrieves the custom title widget of the header. See * gtk_header_bar_set_custom_title(). * * Returns: (nullable) (transfer none): the custom title widget * of the header, or %NULL if none has been set explicitly. */ GtkWidget * gtk_header_bar_get_custom_title (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), NULL); return priv->custom_title; } static void gtk_header_bar_dispose (GObject *object) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (GTK_HEADER_BAR (object)); if (priv->label_sizing_box) { g_object_ref_sink (priv->label_sizing_box); g_clear_object (&priv->label_sizing_box); } g_clear_pointer (&priv->custom_title, gtk_widget_unparent); g_clear_pointer (&priv->label_box, gtk_widget_unparent); G_OBJECT_CLASS (gtk_header_bar_parent_class)->dispose (object); g_clear_pointer (&priv->start_box, gtk_widget_unparent); g_clear_pointer (&priv->end_box, gtk_widget_unparent); } static void gtk_header_bar_finalize (GObject *object) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (GTK_HEADER_BAR (object)); g_free (priv->title); g_free (priv->subtitle); g_free (priv->decoration_layout); G_OBJECT_CLASS (gtk_header_bar_parent_class)->finalize (object); } static void gtk_header_bar_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkHeaderBar *bar = GTK_HEADER_BAR (object); GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); switch (prop_id) { case PROP_TITLE: g_value_set_string (value, priv->title); break; case PROP_SUBTITLE: g_value_set_string (value, priv->subtitle); break; case PROP_CUSTOM_TITLE: g_value_set_object (value, priv->custom_title); break; case PROP_SHOW_TITLE_BUTTONS: g_value_set_boolean (value, gtk_header_bar_get_show_title_buttons (bar)); break; case PROP_HAS_SUBTITLE: g_value_set_boolean (value, gtk_header_bar_get_has_subtitle (bar)); break; case PROP_DECORATION_LAYOUT: g_value_set_string (value, gtk_header_bar_get_decoration_layout (bar)); break; case PROP_DECORATION_LAYOUT_SET: g_value_set_boolean (value, priv->decoration_layout_set); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_header_bar_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkHeaderBar *bar = GTK_HEADER_BAR (object); GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); switch (prop_id) { case PROP_TITLE: gtk_header_bar_set_title (bar, g_value_get_string (value)); break; case PROP_SUBTITLE: gtk_header_bar_set_subtitle (bar, g_value_get_string (value)); break; case PROP_CUSTOM_TITLE: gtk_header_bar_set_custom_title (bar, g_value_get_object (value)); break; case PROP_SHOW_TITLE_BUTTONS: gtk_header_bar_set_show_title_buttons (bar, g_value_get_boolean (value)); break; case PROP_HAS_SUBTITLE: gtk_header_bar_set_has_subtitle (bar, g_value_get_boolean (value)); break; case PROP_DECORATION_LAYOUT: gtk_header_bar_set_decoration_layout (bar, g_value_get_string (value)); break; case PROP_DECORATION_LAYOUT_SET: priv->decoration_layout_set = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void notify_child_cb (GObject *child, GParamSpec *pspec, GtkHeaderBar *bar) { _gtk_header_bar_update_separator_visibility (bar); } static void gtk_header_bar_pack (GtkHeaderBar *bar, GtkWidget *widget, GtkPackType pack_type) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); g_return_if_fail (gtk_widget_get_parent (widget) == NULL); if (pack_type == GTK_PACK_START) { gtk_container_add (GTK_CONTAINER (priv->start_box), widget); } else if (pack_type == GTK_PACK_END) { gtk_container_add (GTK_CONTAINER (priv->end_box), widget); gtk_box_reorder_child_after (GTK_BOX (priv->end_box), widget, NULL); } g_signal_connect (widget, "notify::visible", G_CALLBACK (notify_child_cb), bar); _gtk_header_bar_update_separator_visibility (bar); if (priv->track_default_decoration) update_default_decoration (bar); } static void gtk_header_bar_add (GtkContainer *container, GtkWidget *child) { gtk_header_bar_pack (GTK_HEADER_BAR (container), child, GTK_PACK_START); } static void gtk_header_bar_remove (GtkContainer *container, GtkWidget *widget) { GtkHeaderBar *bar = GTK_HEADER_BAR (container); GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkLayoutManager *layout = gtk_widget_get_layout_manager (GTK_WIDGET (bar)); GtkWidget *parent; gboolean removed = FALSE; parent = gtk_widget_get_parent (widget); if (parent == priv->start_box) { g_signal_handlers_disconnect_by_func (widget, notify_child_cb, bar); gtk_container_remove (GTK_CONTAINER (priv->start_box), widget); removed = TRUE; } else if (parent == priv->end_box) { g_signal_handlers_disconnect_by_func (widget, notify_child_cb, bar); gtk_container_remove (GTK_CONTAINER (priv->end_box), widget); removed = TRUE; } else if (parent == GTK_WIDGET (container) && gtk_center_layout_get_center_widget (GTK_CENTER_LAYOUT (layout)) == widget) { gtk_widget_unparent (widget); removed = TRUE; } if (removed) { _gtk_header_bar_update_separator_visibility (bar); if (priv->track_default_decoration) update_default_decoration (bar); } } static void gtk_header_bar_forall (GtkContainer *container, GtkCallback callback, gpointer callback_data) { GtkHeaderBar *bar = GTK_HEADER_BAR (container); GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkWidget *w; if (priv->start_box) { w = _gtk_widget_get_first_child (priv->start_box); while (w != NULL) { GtkWidget *next = _gtk_widget_get_next_sibling (w); if (w != priv->titlebar_start_box) (* callback) (w, callback_data); w = next; } } if (priv->custom_title != NULL) (* callback) (priv->custom_title, callback_data); if (priv->end_box) { w = _gtk_widget_get_first_child (priv->end_box); while (w != NULL) { GtkWidget *next = _gtk_widget_get_next_sibling (w); if (w != priv->titlebar_end_box) (* callback) (w, callback_data); w = next; } } } static GType gtk_header_bar_child_type (GtkContainer *container) { return GTK_TYPE_WIDGET; } static void surface_state_changed (GtkWidget *widget); static void gtk_header_bar_realize (GtkWidget *widget) { GtkSettings *settings; GTK_WIDGET_CLASS (gtk_header_bar_parent_class)->realize (widget); settings = gtk_widget_get_settings (widget); g_signal_connect_swapped (settings, "notify::gtk-shell-shows-app-menu", G_CALLBACK (_gtk_header_bar_update_window_buttons), widget); g_signal_connect_swapped (settings, "notify::gtk-decoration-layout", G_CALLBACK (_gtk_header_bar_update_window_buttons), widget); g_signal_connect_swapped (gtk_native_get_surface (gtk_widget_get_native (widget)), "notify::state", G_CALLBACK (surface_state_changed), widget); _gtk_header_bar_update_window_buttons (GTK_HEADER_BAR (widget)); } static void gtk_header_bar_unrealize (GtkWidget *widget) { GtkSettings *settings; settings = gtk_widget_get_settings (widget); g_signal_handlers_disconnect_by_func (settings, _gtk_header_bar_update_window_buttons, widget); g_signal_handlers_disconnect_by_func (gtk_native_get_surface (gtk_widget_get_native (widget)), surface_state_changed, widget); GTK_WIDGET_CLASS (gtk_header_bar_parent_class)->unrealize (widget); } static void surface_state_changed (GtkWidget *widget) { GtkHeaderBar *bar = GTK_HEADER_BAR (widget); GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GdkSurfaceState changed, new_state; new_state = gdk_surface_get_state (gtk_native_get_surface (gtk_widget_get_native (widget))); changed = new_state ^ priv->state; priv->state = new_state; if (changed & (GDK_SURFACE_STATE_FULLSCREEN | GDK_SURFACE_STATE_MAXIMIZED | GDK_SURFACE_STATE_TILED | GDK_SURFACE_STATE_TOP_TILED | GDK_SURFACE_STATE_RIGHT_TILED | GDK_SURFACE_STATE_BOTTOM_TILED | GDK_SURFACE_STATE_LEFT_TILED)) _gtk_header_bar_update_window_buttons (bar); } static void gtk_header_bar_root (GtkWidget *widget) { GtkHeaderBar *bar = GTK_HEADER_BAR (widget); GTK_WIDGET_CLASS (gtk_header_bar_parent_class)->root (widget); _gtk_header_bar_update_window_buttons (bar); } static void gtk_header_bar_class_init (GtkHeaderBarClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class); object_class->dispose = gtk_header_bar_dispose; object_class->finalize = gtk_header_bar_finalize; object_class->get_property = gtk_header_bar_get_property; object_class->set_property = gtk_header_bar_set_property; widget_class->realize = gtk_header_bar_realize; widget_class->unrealize = gtk_header_bar_unrealize; widget_class->root = gtk_header_bar_root; container_class->add = gtk_header_bar_add; container_class->remove = gtk_header_bar_remove; container_class->forall = gtk_header_bar_forall; container_class->child_type = gtk_header_bar_child_type; header_bar_props[PROP_TITLE] = g_param_spec_string ("title", P_("Title"), P_("The title to display"), NULL, G_PARAM_READWRITE); header_bar_props[PROP_SUBTITLE] = g_param_spec_string ("subtitle", P_("Subtitle"), P_("The subtitle to display"), NULL, G_PARAM_READWRITE); header_bar_props[PROP_CUSTOM_TITLE] = g_param_spec_object ("custom-title", P_("Custom Title"), P_("Custom title widget to display"), GTK_TYPE_WIDGET, G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS); /** * GtkHeaderBar:show-title-buttons: * * Whether to show title buttons like close, minimize, maximize. * * Which buttons are actually shown and where is determined * by the #GtkHeaderBar:decoration-layout property, and by * the state of the window (e.g. a close button will not be * shown if the window can't be closed). */ header_bar_props[PROP_SHOW_TITLE_BUTTONS] = g_param_spec_boolean ("show-title-buttons", P_("Show title buttons"), P_("Whether to show title buttons"), FALSE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); /** * GtkHeaderBar:decoration-layout: * * The decoration layout for buttons. If this property is * not set, the #GtkSettings:gtk-decoration-layout setting * is used. * * See gtk_header_bar_set_decoration_layout() for information * about the format of this string. */ header_bar_props[PROP_DECORATION_LAYOUT] = g_param_spec_string ("decoration-layout", P_("Decoration Layout"), P_("The layout for window decorations"), NULL, GTK_PARAM_READWRITE); /** * GtkHeaderBar:decoration-layout-set: * * Set to %TRUE if #GtkHeaderBar:decoration-layout is set. */ header_bar_props[PROP_DECORATION_LAYOUT_SET] = g_param_spec_boolean ("decoration-layout-set", P_("Decoration Layout Set"), P_("Whether the decoration-layout property has been set"), FALSE, GTK_PARAM_READWRITE); /** * GtkHeaderBar:has-subtitle: * * If %TRUE, reserve space for a subtitle, even if none * is currently set. */ header_bar_props[PROP_HAS_SUBTITLE] = g_param_spec_boolean ("has-subtitle", P_("Has Subtitle"), P_("Whether to reserve space for a subtitle"), TRUE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); g_object_class_install_properties (object_class, LAST_PROP, header_bar_props); gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_PANEL); gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_CENTER_LAYOUT); gtk_widget_class_set_css_name (widget_class, I_("headerbar")); } static void gtk_header_bar_init (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv = gtk_header_bar_get_instance_private (bar); GtkLayoutManager *layout; priv->title = NULL; priv->subtitle = NULL; priv->custom_title = NULL; priv->has_subtitle = TRUE; priv->decoration_layout = NULL; priv->decoration_layout_set = FALSE; priv->shows_app_menu = FALSE; priv->state = GDK_SURFACE_STATE_WITHDRAWN; layout = gtk_widget_get_layout_manager (GTK_WIDGET (bar)); priv->start_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); gtk_widget_add_css_class (priv->start_box, "start"); gtk_widget_set_parent (priv->start_box, GTK_WIDGET (bar)); gtk_center_layout_set_start_widget (GTK_CENTER_LAYOUT (layout), priv->start_box); priv->end_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); gtk_widget_add_css_class (priv->end_box, "end"); gtk_widget_set_parent (priv->end_box, GTK_WIDGET (bar)); gtk_center_layout_set_end_widget (GTK_CENTER_LAYOUT (layout), priv->end_box); init_sizing_box (bar); construct_label_box (bar); } static GtkBuildableIface *parent_buildable_iface; static void gtk_header_bar_buildable_add_child (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const gchar *type) { if (g_strcmp0 (type, "title") == 0) gtk_header_bar_set_custom_title (GTK_HEADER_BAR (buildable), GTK_WIDGET (child)); else if (g_strcmp0 (type, "start") == 0) gtk_header_bar_pack_start (GTK_HEADER_BAR (buildable), GTK_WIDGET (child)); else if (g_strcmp0 (type, "end") == 0) gtk_header_bar_pack_end (GTK_HEADER_BAR (buildable), GTK_WIDGET (child)); else parent_buildable_iface->add_child (buildable, builder, child, type); } static void gtk_header_bar_buildable_init (GtkBuildableIface *iface) { parent_buildable_iface = g_type_interface_peek_parent (iface); iface->add_child = gtk_header_bar_buildable_add_child; } /** * gtk_header_bar_pack_start: * @bar: A #GtkHeaderBar * @child: the #GtkWidget to be added to @bar * * Adds @child to @bar, packed with reference to the * start of the @bar. */ void gtk_header_bar_pack_start (GtkHeaderBar *bar, GtkWidget *child) { gtk_header_bar_pack (bar, child, GTK_PACK_START); } /** * gtk_header_bar_pack_end: * @bar: A #GtkHeaderBar * @child: the #GtkWidget to be added to @bar * * Adds @child to @bar, packed with reference to the * end of the @bar. */ void gtk_header_bar_pack_end (GtkHeaderBar *bar, GtkWidget *child) { gtk_header_bar_pack (bar, child, GTK_PACK_END); } /** * gtk_header_bar_new: * * Creates a new #GtkHeaderBar widget. * * Returns: a new #GtkHeaderBar */ GtkWidget * gtk_header_bar_new (void) { return GTK_WIDGET (g_object_new (GTK_TYPE_HEADER_BAR, NULL)); } /** * gtk_header_bar_get_show_title_buttons: * @bar: a #GtkHeaderBar * * Returns whether this header bar shows the standard window * title buttons. * * Returns: %TRUE if title buttons are shown */ gboolean gtk_header_bar_get_show_title_buttons (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv; g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), FALSE); priv = gtk_header_bar_get_instance_private (bar); return priv->show_title_buttons; } /** * gtk_header_bar_set_show_title_buttons: * @bar: a #GtkHeaderBar * @setting: %TRUE to show standard title buttons * * Sets whether this header bar shows the standard window * title buttons including close, maximize, and minimize. */ void gtk_header_bar_set_show_title_buttons (GtkHeaderBar *bar, gboolean setting) { GtkHeaderBarPrivate *priv; g_return_if_fail (GTK_IS_HEADER_BAR (bar)); priv = gtk_header_bar_get_instance_private (bar); setting = setting != FALSE; if (priv->show_title_buttons == setting) return; priv->show_title_buttons = setting; _gtk_header_bar_update_window_buttons (bar); g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_SHOW_TITLE_BUTTONS]); } /** * gtk_header_bar_set_has_subtitle: * @bar: a #GtkHeaderBar * @setting: %TRUE to reserve space for a subtitle * * Sets whether the header bar should reserve space * for a subtitle, even if none is currently set. */ void gtk_header_bar_set_has_subtitle (GtkHeaderBar *bar, gboolean setting) { GtkHeaderBarPrivate *priv; g_return_if_fail (GTK_IS_HEADER_BAR (bar)); priv = gtk_header_bar_get_instance_private (bar); setting = setting != FALSE; if (priv->has_subtitle == setting) return; priv->has_subtitle = setting; gtk_widget_set_visible (priv->subtitle_sizing_label, setting || (priv->subtitle && priv->subtitle[0])); gtk_widget_queue_resize (GTK_WIDGET (bar)); g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_HAS_SUBTITLE]); } /** * gtk_header_bar_get_has_subtitle: * @bar: a #GtkHeaderBar * * Retrieves whether the header bar reserves space for * a subtitle, regardless if one is currently set or not. * * Returns: %TRUE if the header bar reserves space * for a subtitle */ gboolean gtk_header_bar_get_has_subtitle (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv; g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), FALSE); priv = gtk_header_bar_get_instance_private (bar); return priv->has_subtitle; } /** * gtk_header_bar_set_decoration_layout: * @bar: a #GtkHeaderBar * @layout: (allow-none): a decoration layout, or %NULL to * unset the layout * * Sets the decoration layout for this header bar, overriding * the #GtkSettings:gtk-decoration-layout setting. * * There can be valid reasons for overriding the setting, such * as a header bar design that does not allow for buttons to take * room on the right, or only offers room for a single close button. * Split header bars are another example for overriding the * setting. * * The format of the string is button names, separated by commas. * A colon separates the buttons that should appear on the left * from those on the right. Recognized button names are minimize, * maximize, close, icon (the window icon) and menu (a menu button * for the fallback app menu). * * For example, “menu:minimize,maximize,close” specifies a menu * on the left, and minimize, maximize and close buttons on the right. */ void gtk_header_bar_set_decoration_layout (GtkHeaderBar *bar, const gchar *layout) { GtkHeaderBarPrivate *priv; g_return_if_fail (GTK_IS_HEADER_BAR (bar)); priv = gtk_header_bar_get_instance_private (bar); g_free (priv->decoration_layout); priv->decoration_layout = g_strdup (layout); priv->decoration_layout_set = (layout != NULL); _gtk_header_bar_update_window_buttons (bar); g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_DECORATION_LAYOUT]); g_object_notify_by_pspec (G_OBJECT (bar), header_bar_props[PROP_DECORATION_LAYOUT_SET]); } /** * gtk_header_bar_get_decoration_layout: * @bar: a #GtkHeaderBar * * Gets the decoration layout set with * gtk_header_bar_set_decoration_layout(). * * Returns: the decoration layout */ const gchar * gtk_header_bar_get_decoration_layout (GtkHeaderBar *bar) { GtkHeaderBarPrivate *priv; g_return_val_if_fail (GTK_IS_HEADER_BAR (bar), NULL); priv = gtk_header_bar_get_instance_private (bar); return priv->decoration_layout; }