--- /dev/null
+/* gtkpathbar.h
+ * Copyright (C) 2004 Red Hat, Inc., Jonathan Blandford <jrb@gnome.org>
+ *
+ * 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 "gtkpathbar.h"
+#include "gtktogglebutton.h"
+#include "gtkarrow.h"
+#include "gtklabel.h"
+
+G_DEFINE_TYPE (GtkPathBar,
+ gtk_path_bar,
+ GTK_TYPE_CONTAINER);
+
+static void gtk_path_bar_destroy (GtkObject *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 GtkWidget *
+get_slider_button (GtkPathBar *path_bar)
+{
+ GtkWidget *button;
+
+ 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);
+
+ 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);
+}
+
+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;
+
+ object_class->destroy = gtk_path_bar_destroy;
+
+ 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;
+ // container_class->child_type = gtk_path_bar_child_type;
+}
+
+
+static void
+gtk_path_bar_destroy (GtkObject *object)
+{
+ GtkPathBar *path_bar;
+
+ path_bar = GTK_PATH_BAR (object);
+
+ g_free ((void *) path_bar->path);
+}
+
+/* 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);
+
+ /* FIXME: first_button will be something else if we've scrolled
+ */
+ 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;
+
+ /* 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 - child_allocation.width - 2 * path_bar->spacing - path_bar->spacing <
+ widget->allocation.x + border_width)
+ break;
+ }
+ else if (need_sliders && direction == GTK_TEXT_DIR_LTR)
+ {
+ if (child_allocation.x + child_allocation.width + 2 * path_bar->spacing + path_bar->spacing >
+ widget->allocation.x + border_width + allocation_width)
+ break;
+ }
+
+ if (direction == GTK_TEXT_DIR_RTL)
+ child_allocation.x -= child_allocation.width;
+
+ 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);
+}
+
+
+
+/* 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);
+ }
+}
+
+/* FIXME: Do this right. Quick hack to get something on the screen. Get in
+ * sync with nautilus-spatial-window.c:location_button_clicked_callback */
+
+static GList *
+gtk_path_bar_get_description_list (const gchar *path)
+{
+ GList *description_list = NULL;
+ gchar** str_list;
+ gint i = 0;
+
+ str_list = g_strsplit (path, "/", -1);
+
+ while (str_list[i])
+ {
+ if (str_list[i][0] == '\000')
+ g_free (str_list[i]);
+ else
+ description_list = g_list_prepend (description_list, str_list[i]);
+
+ i++;
+ }
+ g_free (str_list);
+
+ description_list = g_list_append (description_list, " / ");
+
+ return description_list;
+}
+
+/* FIXME: non UTF-8 strings */
+void
+gtk_path_bar_set_path (GtkPathBar *path_bar,
+ const gchar *path)
+{
+ GList *button_list = NULL;
+ GList *description_list;
+ GList *list;
+
+ g_return_if_fail (GTK_IS_PATH_BAR (path_bar));
+ g_return_if_fail (path != NULL);
+
+ if (path_bar->path)
+ g_free ((void *) path_bar->path);
+ gtk_path_bar_clear_buttons (path_bar);
+
+ /* New path */
+ path_bar->path = g_strdup (path);
+ description_list = gtk_path_bar_get_description_list (path);
+ for (list = description_list; list; list = list->next)
+ {
+ GtkWidget *button, *label;
+ gchar *label_str;
+
+ button = gtk_toggle_button_new ();
+
+ if (list->prev == NULL)
+ {
+ label_str = g_strdup_printf ("<span color=\"#000000\"><b>%s</b></span>", (char *)list->data);
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
+ }
+ else
+ {
+ label_str = g_strdup_printf ("<span color=\"#000000\">%s</span>",(char *) list->data);
+ }
+
+ label = gtk_label_new (NULL);
+ gtk_label_set_markup (GTK_LABEL (label), label_str);
+ gtk_container_add (GTK_CONTAINER (button), label);
+ // gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
+ button_list = g_list_prepend (button_list, button);
+ gtk_container_add (GTK_CONTAINER (path_bar), button);
+ }
+
+ path_bar->button_list = g_list_reverse (button_list);
+}
+
+
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