/* gtkpathbar.h * Copyright (C) 2004 Red Hat, Inc., Jonathan Blandford * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #include "gtkpathbar.h" #include "gtktogglebutton.h" #include "gtkarrow.h" #include "gtklabel.h" #include "gtkmain.h" #include "gtkmarshalers.h" enum { PATH_CLICKED, LAST_SIGNAL }; static guint path_bar_signals [LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE (GtkPathBar, gtk_path_bar, GTK_TYPE_CONTAINER); static void gtk_path_bar_finalize (GObject *object); static void gtk_path_bar_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_path_bar_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_path_bar_direction_changed (GtkWidget *widget, GtkTextDirection direction); static void gtk_path_bar_add (GtkContainer *container, GtkWidget *widget); static void gtk_path_bar_remove (GtkContainer *container, GtkWidget *widget); static void gtk_path_bar_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data); static void gtk_path_bar_scroll_up (GtkWidget *button, GtkPathBar *path_bar); static void gtk_path_bar_scroll_down (GtkWidget *button, GtkPathBar *path_bar); static GtkWidget * get_slider_button (GtkPathBar *path_bar) { GtkWidget *button; gtk_widget_push_composite_child (); button = gtk_button_new (); gtk_container_add (GTK_CONTAINER (button), gtk_arrow_new (GTK_ARROW_RIGHT, GTK_SHADOW_OUT)); gtk_container_add (GTK_CONTAINER (path_bar), button); gtk_widget_show_all (button); gtk_widget_pop_composite_child (); return button; } static void gtk_path_bar_init (GtkPathBar *path_bar) { GTK_WIDGET_SET_FLAGS (path_bar, GTK_NO_WINDOW); gtk_widget_set_redraw_on_allocate (GTK_WIDGET (path_bar), FALSE); path_bar->spacing = 3; path_bar->up_slider_button = get_slider_button (path_bar); path_bar->down_slider_button = get_slider_button (path_bar); g_signal_connect (path_bar->up_slider_button, "clicked", G_CALLBACK (gtk_path_bar_scroll_up), path_bar); g_signal_connect (path_bar->down_slider_button, "clicked", G_CALLBACK (gtk_path_bar_scroll_down), path_bar); } static void gtk_path_bar_class_init (GtkPathBarClass *path_bar_class) { GObjectClass *gobject_class; GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; gobject_class = (GObjectClass *) path_bar_class; object_class = (GtkObjectClass *) path_bar_class; widget_class = (GtkWidgetClass *) path_bar_class; container_class = (GtkContainerClass *) path_bar_class; gobject_class->finalize = gtk_path_bar_finalize; widget_class->size_request = gtk_path_bar_size_request; widget_class->size_allocate = gtk_path_bar_size_allocate; widget_class->direction_changed = gtk_path_bar_direction_changed; container_class->add = gtk_path_bar_add; container_class->forall = gtk_path_bar_forall; container_class->remove = gtk_path_bar_remove; /* FIXME: */ /* container_class->child_type = gtk_path_bar_child_type;*/ path_bar_signals [PATH_CLICKED] = g_signal_new ("path_clicked", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkPathBarClass, path_clicked), NULL, NULL, _gtk_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); } static void gtk_path_bar_finalize (GObject *object) { GtkPathBar *path_bar; path_bar = GTK_PATH_BAR (object); g_list_free (path_bar->button_list); if (path_bar->home_directory) gtk_file_path_free (path_bar->home_directory); if (path_bar->home_icon) g_object_unref (path_bar->home_icon); if (path_bar->root_icon) g_object_unref (path_bar->home_icon); G_OBJECT_CLASS (gtk_path_bar_parent_class)->finalize (object); } /* Size requisition: * * Ideally, our size is determined by another widget, and we are just filling * available space. */ static void gtk_path_bar_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkPathBar *path_bar; GtkRequisition child_requisition; GList *list; path_bar = GTK_PATH_BAR (widget); requisition->width = 0; requisition->height = 0; for (list = path_bar->button_list; list; list = list->next) { gtk_widget_size_request (GTK_WIDGET (list->data), &child_requisition); requisition->width = MAX (child_requisition.width, requisition->width); requisition->height = MAX (child_requisition.height, requisition->height); } /* Add space for slider, if we have more than one path */ /* Theoretically, the slider could be bigger than the other button. But we're * not going to worry about that now. */ path_bar->slider_width = requisition->height / 2 + 5; if (path_bar->button_list && path_bar->button_list->next != NULL) requisition->width += (path_bar->spacing + path_bar->slider_width) * 2; gtk_widget_size_request (path_bar->up_slider_button, &child_requisition); gtk_widget_size_request (path_bar->down_slider_button, &child_requisition); requisition->width += GTK_CONTAINER (widget)->border_width * 2; requisition->height += GTK_CONTAINER (widget)->border_width * 2; widget->requisition = *requisition; } static void gtk_path_bar_update_slider_buttons (GtkPathBar *path_bar) { GtkTextDirection direction; direction = gtk_widget_get_direction (GTK_WIDGET (path_bar)); if (direction == GTK_TEXT_DIR_RTL) { GtkWidget *arrow; arrow = gtk_bin_get_child (GTK_BIN (path_bar->up_slider_button)); g_object_set (arrow, "arrow_type", GTK_ARROW_RIGHT, NULL); arrow = gtk_bin_get_child (GTK_BIN (path_bar->down_slider_button)); g_object_set (arrow, "arrow_type", GTK_ARROW_LEFT, NULL); } else { GtkWidget *arrow; arrow = gtk_bin_get_child (GTK_BIN (path_bar->up_slider_button)); g_object_set (arrow, "arrow_type", GTK_ARROW_LEFT, NULL); arrow = gtk_bin_get_child (GTK_BIN (path_bar->down_slider_button)); g_object_set (arrow, "arrow_type", GTK_ARROW_RIGHT, NULL); } if (path_bar->button_list) { GtkWidget *button; button = path_bar->button_list->data; if (gtk_widget_get_child_visible (button)) gtk_widget_set_sensitive (path_bar->down_slider_button, FALSE); else gtk_widget_set_sensitive (path_bar->down_slider_button, TRUE); button = g_list_last (path_bar->button_list)->data; if (gtk_widget_get_child_visible (button)) gtk_widget_set_sensitive (path_bar->up_slider_button, FALSE); else gtk_widget_set_sensitive (path_bar->up_slider_button, TRUE); } } /* This is a tad complicated */ static void gtk_path_bar_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkWidget *child; GtkPathBar *path_bar = GTK_PATH_BAR (widget); GtkTextDirection direction; GtkAllocation child_allocation; GList *list, *first_button; gint width; gint allocation_width; gint border_width; gboolean need_sliders = FALSE; gint up_slider_offset = 0; gint down_slider_offset = 0; widget->allocation = *allocation; /* No path is set; we don't have to allocate anything. */ if (path_bar->button_list == NULL) return; direction = gtk_widget_get_direction (widget); border_width = (gint) GTK_CONTAINER (path_bar)->border_width; allocation_width = allocation->width - 2 * border_width; /* First, we check to see if we need the scrollbars. */ width = GTK_WIDGET (path_bar->button_list->data)->requisition.width; for (list = path_bar->button_list->next; list; list = list->next) { child = GTK_WIDGET (list->data); width += child->requisition.width + path_bar->spacing; } if (width <= allocation_width) { first_button = g_list_last (path_bar->button_list); } else { gboolean reached_end = FALSE; gint slider_space = 2 * (path_bar->spacing + path_bar->slider_width); if (path_bar->first_scrolled_button) first_button = path_bar->first_scrolled_button; else first_button = path_bar->button_list; need_sliders = TRUE; /* To see how much space we have, and how many buttons we can display. * We start at the first button, count forward until hit the new * button, then count backwards. */ /* Count down the path chain towards the end. */ width = GTK_WIDGET (first_button->data)->requisition.width; list = first_button->prev; while (list && !reached_end) { child = GTK_WIDGET (list->data); if (width + child->requisition.width + path_bar->spacing + slider_space > allocation_width) reached_end = TRUE; else width += child->requisition.width + path_bar->spacing; list = list->prev; } /* Finally, we walk up, seeing how many of the previous buttons we can * add */ while (first_button->next && ! reached_end) { child = GTK_WIDGET (first_button->next->data); if (width + child->requisition.width + path_bar->spacing + slider_space > allocation_width) { reached_end = TRUE; } else { width += child->requisition.width + path_bar->spacing; first_button = first_button->next; } } } /* Now, we allocate space to the buttons */ child_allocation.y = allocation->y + border_width; child_allocation.height = MAX (1, (gint) allocation->height - border_width * 2); if (direction == GTK_TEXT_DIR_RTL) { child_allocation.x = allocation->x + allocation->width - border_width; if (need_sliders) { child_allocation.x -= (path_bar->spacing + path_bar->slider_width); up_slider_offset = allocation->width - border_width - path_bar->slider_width; } } else { child_allocation.x = allocation->x + border_width; if (need_sliders) { up_slider_offset = border_width; child_allocation.x += (path_bar->spacing + path_bar->slider_width); } } for (list = first_button; list; list = list->prev) { child = GTK_WIDGET (list->data); child_allocation.width = child->requisition.width; if (direction == GTK_TEXT_DIR_RTL) child_allocation.x -= child_allocation.width; /* Check to see if we've don't have any more space to allocate buttons */ if (need_sliders && direction == GTK_TEXT_DIR_RTL) { if (child_allocation.x - path_bar->spacing - path_bar->slider_width < widget->allocation.x + border_width) break; } else if (need_sliders && direction == GTK_TEXT_DIR_LTR) { if (child_allocation.x + child_allocation.width + path_bar->spacing + path_bar->slider_width > widget->allocation.x + border_width + allocation_width) break; } gtk_widget_set_child_visible (list->data, TRUE); gtk_widget_size_allocate (child, &child_allocation); if (direction == GTK_TEXT_DIR_RTL) { child_allocation.x -= path_bar->spacing; down_slider_offset = child_allocation.x - widget->allocation.x - path_bar->slider_width; } else { child_allocation.x += child_allocation.width + path_bar->spacing; down_slider_offset = child_allocation.x - widget->allocation.x; } } /* Now we go hide all the widgets that don't fit */ while (list) { gtk_widget_set_child_visible (list->data, FALSE); list = list->prev; } for (list = first_button->next; list; list = list->next) { gtk_widget_set_child_visible (list->data, FALSE); } if (need_sliders) { child_allocation.width = path_bar->slider_width; child_allocation.x = up_slider_offset + allocation->x; gtk_widget_size_allocate (path_bar->up_slider_button, &child_allocation); child_allocation.x = down_slider_offset + allocation->x; gtk_widget_size_allocate (path_bar->down_slider_button, &child_allocation); gtk_widget_set_child_visible (path_bar->up_slider_button, TRUE); gtk_widget_set_child_visible (path_bar->down_slider_button, TRUE); gtk_widget_show_all (path_bar->up_slider_button); gtk_widget_show_all (path_bar->down_slider_button); gtk_path_bar_update_slider_buttons (path_bar); } else { gtk_widget_set_child_visible (path_bar->up_slider_button, FALSE); gtk_widget_set_child_visible (path_bar->down_slider_button, FALSE); } } static void gtk_path_bar_direction_changed (GtkWidget *widget, GtkTextDirection direction) { gtk_path_bar_update_slider_buttons (GTK_PATH_BAR (widget)); (* GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->direction_changed) (widget, direction); } static void gtk_path_bar_add (GtkContainer *container, GtkWidget *widget) { gtk_widget_set_parent (widget, GTK_WIDGET (container)); } static void gtk_path_bar_remove (GtkContainer *container, GtkWidget *widget) { GtkPathBar *path_bar; GList *children; path_bar = GTK_PATH_BAR (container); children = path_bar->button_list; while (children) { if (widget == children->data) { gboolean was_visible; was_visible = GTK_WIDGET_VISIBLE (widget); gtk_widget_unparent (widget); path_bar->button_list = g_list_remove_link (path_bar->button_list, children); g_list_free (children); if (was_visible) gtk_widget_queue_resize (GTK_WIDGET (container)); break; } children = children->next; } } static void gtk_path_bar_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data) { GtkPathBar *path_bar; GList *children; g_return_if_fail (callback != NULL); path_bar = GTK_PATH_BAR (container); children = path_bar->button_list; while (children) { GtkWidget *child; child = children->data; children = children->next; (* callback) (child, callback_data); } (* callback) (path_bar->up_slider_button, callback_data); (* callback) (path_bar->down_slider_button, callback_data); } static void gtk_path_bar_scroll_down (GtkWidget *button, GtkPathBar *path_bar) { GList *list; GList *down_button = NULL; GList *up_button = NULL; gint space_available; gint space_needed; gint border_width; GtkTextDirection direction; border_width = GTK_CONTAINER (path_bar)->border_width; direction = gtk_widget_get_direction (GTK_WIDGET (path_bar)); /* We find the button at the 'down' end that we have to make * visible */ for (list = path_bar->button_list; list; list = list->next) { if (list->next && gtk_widget_get_child_visible (GTK_WIDGET (list->next->data))) { down_button = list; break; } } /* Find the last visible button on the 'up' end */ for (list = g_list_last (path_bar->button_list); list; list = list->prev) { if (gtk_widget_get_child_visible (GTK_WIDGET (list->data))) { up_button = list; break; } } space_needed = GTK_WIDGET (down_button->data)->allocation.width + path_bar->spacing; if (direction == GTK_TEXT_DIR_RTL) space_available = GTK_WIDGET (path_bar)->allocation.x + GTK_WIDGET (path_bar)->allocation.width; else space_available = (GTK_WIDGET (path_bar)->allocation.x + GTK_WIDGET (path_bar)->allocation.width - border_width) - (path_bar->down_slider_button->allocation.x + path_bar->down_slider_button->allocation.width); /* We have space_available extra space that's not being used. We * need space_needed space to make the button fit. So we walk down * from the end, removing buttons until we get all the space we * need. */ while (space_available < space_needed) { space_available += GTK_WIDGET (up_button->data)->allocation.width + path_bar->spacing; up_button = up_button->prev; path_bar->first_scrolled_button = up_button; } } static void gtk_path_bar_scroll_up (GtkWidget *button, GtkPathBar *path_bar) { GList *list; for (list = g_list_last (path_bar->button_list); list; list = list->prev) { if (list->prev && gtk_widget_get_child_visible (GTK_WIDGET (list->prev->data))) { path_bar->first_scrolled_button = list; return; } } } /* Public functions. */ static void gtk_path_bar_clear_buttons (GtkPathBar *path_bar) { while (path_bar->button_list != NULL) { gtk_container_remove (GTK_CONTAINER (path_bar), path_bar->button_list->data); } path_bar->first_scrolled_button = NULL; } static void button_clicked_cb (GtkWidget *button, gpointer data) { GtkWidget *path_bar; GtkFilePath *file_path; path_bar = button->parent; g_assert (GTK_IS_PATH_BAR (path_bar)); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); file_path = g_object_get_data (G_OBJECT (button), "gtk-path-bar-button-path"); g_signal_emit (path_bar, path_bar_signals [PATH_CLICKED], 0, file_path); } static void update_button_appearance (GtkWidget *button, gboolean current_dir) { GtkWidget *label; const gchar *dir_name; dir_name = (const gchar *) g_object_get_data (G_OBJECT (button), "gtk-path-bar-button-dir-name"); label = gtk_bin_get_child (GTK_BIN (button)); if (current_dir) { char *markup; markup = g_markup_printf_escaped ("%s", dir_name); gtk_label_set_markup (GTK_LABEL (label), markup); g_free (markup); } else { gtk_label_set_text (GTK_LABEL (label), dir_name); } if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)) != current_dir) { g_signal_handlers_block_by_func (G_OBJECT (button), button_clicked_cb, NULL); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), current_dir); g_signal_handlers_unblock_by_func (G_OBJECT (button), button_clicked_cb, NULL); } } /* Since gtk_file_path_free() can be a macro, we provide a real function that * can be used as a callback. */ static void file_path_destroy (GtkFilePath *path) { gtk_file_path_free (path); } static GtkWidget * make_directory_button (const char *dir_name, GtkFilePath *path, gboolean current_dir) { GtkWidget *button, *label; button = gtk_toggle_button_new (); label = gtk_label_new (NULL); g_signal_connect (button, "clicked", G_CALLBACK (button_clicked_cb), NULL); g_object_set_data_full (G_OBJECT (button), "gtk-path-bar-button-dir-name", g_strdup (dir_name), (GDestroyNotify) g_free); g_object_set_data_full (G_OBJECT (button), "gtk-path-bar-button-path", gtk_file_path_new_dup (gtk_file_path_get_string (path)), (GDestroyNotify) file_path_destroy); gtk_container_add (GTK_CONTAINER (button), label); gtk_widget_show_all (button); update_button_appearance (button, current_dir); return button; } static gboolean gtk_path_bar_check_parent_path (GtkPathBar *path_bar, const GtkFilePath *file_path, GtkFileSystem *file_system) { GList *list; GList *current_path = NULL; for (list = path_bar->button_list; list; list = list->next) { GtkFilePath *tmp_path; tmp_path = (GtkFilePath *) g_object_get_data (G_OBJECT (list->data), "gtk-path-bar-button-path"); if (! gtk_file_path_compare (file_path, tmp_path)) { current_path = list; break; } } if (current_path) { for (list = path_bar->button_list; list; list = list->next) { update_button_appearance (GTK_WIDGET (list->data), (list == current_path) ? TRUE : FALSE); } return TRUE; } return FALSE; } gboolean _gtk_path_bar_set_path (GtkPathBar *path_bar, const GtkFilePath *file_path, GtkFileSystem *file_system, GError **error) { GtkFilePath *path; gboolean first_directory = TRUE; gboolean result; g_return_val_if_fail (GTK_IS_PATH_BAR (path_bar), FALSE); g_return_val_if_fail (file_path != NULL, FALSE); g_return_val_if_fail (file_system != NULL, FALSE); result = TRUE; if (gtk_path_bar_check_parent_path (path_bar, file_path, file_system)) return TRUE; gtk_path_bar_clear_buttons (path_bar); path = gtk_file_path_copy (file_path); gtk_widget_push_composite_child (); while (path != NULL) { GtkFilePath *parent_path = NULL; GtkWidget *button; const gchar *display_name; GError *err = NULL; GtkFileFolder *file_folder; GtkFileInfo *file_info; gboolean valid; valid = gtk_file_system_get_parent (file_system, path, &parent_path, &err); if (!valid) { result = FALSE; g_propagate_error (error, err); gtk_file_path_free (path); break; } if (parent_path) file_folder = gtk_file_system_get_folder (file_system, parent_path, GTK_FILE_INFO_DISPLAY_NAME, NULL); else file_folder = gtk_file_system_get_folder (file_system, path, GTK_FILE_INFO_DISPLAY_NAME, NULL); file_info = gtk_file_folder_get_info (file_folder, path, &err); if (!file_info) { result = FALSE; g_propagate_error (error, err); g_object_unref (file_folder); gtk_file_path_free (parent_path); gtk_file_path_free (path); break; } display_name = gtk_file_info_get_display_name (file_info); /* FIXME: Do this better */ if (! strcmp ("/", display_name)) display_name = " / "; button = make_directory_button (display_name, path, first_directory); gtk_file_info_free (file_info); gtk_file_path_free (path); g_object_unref (file_folder); gtk_container_add (GTK_CONTAINER (path_bar), button); path_bar->button_list = g_list_prepend (path_bar->button_list, button); path = parent_path; first_directory = FALSE; } gtk_widget_pop_composite_child (); path_bar->button_list = g_list_reverse (path_bar->button_list); return result; } void gtk_path_bar_set_root_icon (GtkPathBar *path_bar, GdkPixbuf *root_icon) { g_return_if_fail (GTK_IS_PATH_BAR (path_bar)); if (root_icon) path_bar->home_icon = g_object_ref (root_icon); if (path_bar->root_icon) g_object_unref (root_icon); path_bar->root_icon = root_icon; } void gtk_path_bar_set_home_icon (GtkPathBar *path_bar, const GtkFilePath *home_directory, GdkPixbuf *home_icon) { g_return_if_fail (GTK_IS_PATH_BAR (path_bar)); if (home_icon) g_object_ref (home_icon); if (path_bar->home_directory != NULL) gtk_file_path_free (path_bar->home_directory); if (path_bar->home_icon) g_object_unref (home_icon); if (home_directory) path_bar->home_directory = gtk_file_path_new_dup (gtk_file_path_get_string (home_directory)); else path_bar->home_directory = NULL; path_bar->home_icon = home_icon; }