/* gtkpathbar.c * 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 #include "gtkalias.h" #include "gtkpathbar.h" #include "gtktogglebutton.h" #include "gtkalignment.h" #include "gtkarrow.h" #include "gtkdnd.h" #include "gtkimage.h" #include "gtkintl.h" #include "gtkicontheme.h" #include "gtkiconfactory.h" #include "gtklabel.h" #include "gtkhbox.h" #include "gtkmain.h" #include "gtkmarshalers.h" enum { PATH_CLICKED, LAST_SIGNAL }; typedef enum { NORMAL_BUTTON, ROOT_BUTTON, HOME_BUTTON, DESKTOP_BUTTON } ButtonType; #define BUTTON_DATA(x) ((ButtonData *)(x)) #define SCROLL_TIMEOUT 150 #define INITIAL_SCROLL_TIMEOUT 300 static guint path_bar_signals [LAST_SIGNAL] = { 0 }; /* Icon size for if we can't get it from the theme */ #define FALLBACK_ICON_SIZE 20 typedef struct _ButtonData ButtonData; struct _ButtonData { GtkWidget *button; ButtonType type; char *dir_name; GtkFilePath *path; GtkWidget *image; GtkWidget *label; guint ignore_changes : 1; guint file_is_hidden : 1; }; G_DEFINE_TYPE (GtkPathBar, gtk_path_bar, GTK_TYPE_CONTAINER); static void gtk_path_bar_finalize (GObject *object); static void gtk_path_bar_dispose (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_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 gboolean gtk_path_bar_slider_button_press (GtkWidget *widget, GdkEventButton *event, GtkPathBar *path_bar); static gboolean gtk_path_bar_slider_button_release(GtkWidget *widget, GdkEventButton *event, GtkPathBar *path_bar); static void gtk_path_bar_grab_notify (GtkWidget *widget, gboolean was_grabbed); static void gtk_path_bar_state_changed (GtkWidget *widget, GtkStateType previous_state); static void gtk_path_bar_style_set (GtkWidget *widget, GtkStyle *previous_style); static void gtk_path_bar_screen_changed (GtkWidget *widget, GdkScreen *previous_screen); static void gtk_path_bar_check_icon_theme (GtkPathBar *path_bar); static void gtk_path_bar_update_button_appearance (GtkPathBar *path_bar, ButtonData *button_data, gboolean current_dir); static GtkWidget * get_slider_button (GtkPathBar *path_bar, GtkArrowType arrow_type) { GtkWidget *button; gtk_widget_push_composite_child (); button = gtk_button_new (); gtk_container_add (GTK_CONTAINER (button), gtk_arrow_new (arrow_type, 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, GTK_ARROW_LEFT); path_bar->down_slider_button = get_slider_button (path_bar, GTK_ARROW_RIGHT); path_bar->icon_size = FALLBACK_ICON_SIZE; 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); g_signal_connect (path_bar->up_slider_button, "button_press_event", G_CALLBACK (gtk_path_bar_slider_button_press), path_bar); g_signal_connect (path_bar->up_slider_button, "button_release_event", G_CALLBACK (gtk_path_bar_slider_button_release), path_bar); g_signal_connect (path_bar->down_slider_button, "button_press_event", G_CALLBACK (gtk_path_bar_slider_button_press), path_bar); g_signal_connect (path_bar->down_slider_button, "button_release_event", G_CALLBACK (gtk_path_bar_slider_button_release), 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; gobject_class->dispose = gtk_path_bar_dispose; widget_class->size_request = gtk_path_bar_size_request; widget_class->size_allocate = gtk_path_bar_size_allocate; widget_class->style_set = gtk_path_bar_style_set; widget_class->screen_changed = gtk_path_bar_screen_changed; widget_class->grab_notify = gtk_path_bar_grab_notify; widget_class->state_changed = gtk_path_bar_state_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_BOOLEAN, G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN); } 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->root_path) gtk_file_path_free (path_bar->root_path); if (path_bar->home_path) gtk_file_path_free (path_bar->home_path); if (path_bar->desktop_path) gtk_file_path_free (path_bar->desktop_path); if (path_bar->root_icon) g_object_unref (path_bar->root_icon); if (path_bar->home_icon) g_object_unref (path_bar->home_icon); if (path_bar->desktop_icon) g_object_unref (path_bar->desktop_icon); if (path_bar->file_system) g_object_unref (path_bar->file_system); G_OBJECT_CLASS (gtk_path_bar_parent_class)->finalize (object); } /* Removes the settings signal handler. It's safe to call multiple times */ static void remove_settings_signal (GtkPathBar *path_bar, GdkScreen *screen) { if (path_bar->settings_signal_id) { GtkSettings *settings; settings = gtk_settings_get_for_screen (screen); g_signal_handler_disconnect (settings, path_bar->settings_signal_id); path_bar->settings_signal_id = 0; } } static void gtk_path_bar_dispose (GObject *object) { remove_settings_signal (GTK_PATH_BAR (object), gtk_widget_get_screen (GTK_WIDGET (object))); G_OBJECT_CLASS (gtk_path_bar_parent_class)->dispose (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) { ButtonData *button_data; 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) { button_data = BUTTON_DATA (list->data); gtk_widget_size_request (button_data->button, &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 = MIN(requisition->height * 2 / 3 + 5, requisition->height); 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) { if (path_bar->button_list) { GtkWidget *button; button = BUTTON_DATA (path_bar->button_list->data)->button; 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 = BUTTON_DATA (g_list_last (path_bar->button_list)->data)->button; 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 = BUTTON_DATA (path_bar->button_list->data)->button->requisition.width; for (list = path_bar->button_list->next; list; list = list->next) { child = BUTTON_DATA (list->data)->button; 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 = BUTTON_DATA (first_button->data)->button->requisition.width; list = first_button->prev; while (list && !reached_end) { child = BUTTON_DATA (list->data)->button; 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 = BUTTON_DATA (first_button->next->data)->button; 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 = BUTTON_DATA (list->data)->button; 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 (BUTTON_DATA (list->data)->button, 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; down_slider_offset = border_width; } else { down_slider_offset = child_allocation.x - widget->allocation.x; down_slider_offset = allocation->width - border_width - path_bar->slider_width; child_allocation.x += child_allocation.width + path_bar->spacing; } } /* Now we go hide all the widgets that don't fit */ while (list) { gtk_widget_set_child_visible (BUTTON_DATA (list->data)->button, FALSE); list = list->prev; } for (list = first_button->next; list; list = list->next) { gtk_widget_set_child_visible (BUTTON_DATA (list->data)->button, 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_style_set (GtkWidget *widget, GtkStyle *previous_style) { if (GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->style_set) GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->style_set (widget, previous_style); gtk_path_bar_check_icon_theme (GTK_PATH_BAR (widget)); } static void gtk_path_bar_screen_changed (GtkWidget *widget, GdkScreen *previous_screen) { if (GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->screen_changed) GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->screen_changed (widget, previous_screen); /* We might nave a new settings, so we remove the old one */ if (previous_screen) remove_settings_signal (GTK_PATH_BAR (widget), previous_screen); gtk_path_bar_check_icon_theme (GTK_PATH_BAR (widget)); } static void gtk_path_bar_add (GtkContainer *container, GtkWidget *widget) { gtk_widget_set_parent (widget, GTK_WIDGET (container)); } static void gtk_path_bar_remove_1 (GtkContainer *container, GtkWidget *widget) { gboolean was_visible = GTK_WIDGET_VISIBLE (widget); gtk_widget_unparent (widget); if (was_visible) gtk_widget_queue_resize (GTK_WIDGET (container)); } static void gtk_path_bar_remove (GtkContainer *container, GtkWidget *widget) { GtkPathBar *path_bar; GList *children; path_bar = GTK_PATH_BAR (container); if (widget == path_bar->up_slider_button) { gtk_path_bar_remove_1 (container, widget); path_bar->up_slider_button = NULL; return; } if (widget == path_bar->down_slider_button) { gtk_path_bar_remove_1 (container, widget); path_bar->down_slider_button = NULL; return; } children = path_bar->button_list; while (children) { if (widget == BUTTON_DATA (children->data)->button) { gtk_path_bar_remove_1 (container, widget); path_bar->button_list = g_list_remove_link (path_bar->button_list, children); g_list_free (children); return; } 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 = BUTTON_DATA (children->data)->button; children = children->next; (* callback) (child, callback_data); } if (path_bar->up_slider_button) (* callback) (path_bar->up_slider_button, callback_data); if (path_bar->down_slider_button) (* 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; if (path_bar->ignore_click) { path_bar->ignore_click = FALSE; return; } gtk_widget_queue_resize (GTK_WIDGET (path_bar)); 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 (BUTTON_DATA (list->next->data)->button)) { 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 (BUTTON_DATA (list->data)->button)) { up_button = list; break; } } space_needed = BUTTON_DATA (down_button->data)->button->allocation.width + path_bar->spacing; if (direction == GTK_TEXT_DIR_RTL) space_available = path_bar->down_slider_button->allocation.x - GTK_WIDGET (path_bar)->allocation.x; 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 += BUTTON_DATA (up_button->data)->button->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; if (path_bar->ignore_click) { path_bar->ignore_click = FALSE; return; } gtk_widget_queue_resize (GTK_WIDGET (path_bar)); for (list = g_list_last (path_bar->button_list); list; list = list->prev) { if (list->prev && gtk_widget_get_child_visible (BUTTON_DATA (list->prev->data)->button)) { path_bar->first_scrolled_button = list; return; } } } static gboolean gtk_path_bar_scroll_timeout (GtkPathBar *path_bar) { gboolean retval = FALSE; GDK_THREADS_ENTER (); if (path_bar->timer) { if (GTK_WIDGET_HAS_FOCUS (path_bar->up_slider_button)) gtk_path_bar_scroll_up (path_bar->up_slider_button, path_bar); else if (GTK_WIDGET_HAS_FOCUS (path_bar->down_slider_button)) gtk_path_bar_scroll_down (path_bar->down_slider_button, path_bar); if (path_bar->need_timer) { path_bar->need_timer = FALSE; path_bar->timer = g_timeout_add (SCROLL_TIMEOUT, (GSourceFunc)gtk_path_bar_scroll_timeout, path_bar); } else retval = TRUE; } GDK_THREADS_LEAVE (); return retval; } static void gtk_path_bar_stop_scrolling (GtkPathBar *path_bar) { if (path_bar->timer) { g_source_remove (path_bar->timer); path_bar->timer = 0; path_bar->need_timer = FALSE; } } static gboolean gtk_path_bar_slider_button_press (GtkWidget *widget, GdkEventButton *event, GtkPathBar *path_bar) { if (!GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); if (event->type != GDK_BUTTON_PRESS || event->button != 1) return FALSE; path_bar->ignore_click = FALSE; if (widget == path_bar->up_slider_button) gtk_path_bar_scroll_up (path_bar->up_slider_button, path_bar); else if (widget == path_bar->down_slider_button) gtk_path_bar_scroll_down (path_bar->down_slider_button, path_bar); if (!path_bar->timer) { path_bar->need_timer = TRUE; path_bar->timer = g_timeout_add (INITIAL_SCROLL_TIMEOUT, (GSourceFunc)gtk_path_bar_scroll_timeout, path_bar); } return FALSE; } static gboolean gtk_path_bar_slider_button_release (GtkWidget *widget, GdkEventButton *event, GtkPathBar *path_bar) { if (event->type != GDK_BUTTON_RELEASE) return FALSE; path_bar->ignore_click = TRUE; gtk_path_bar_stop_scrolling (path_bar); return FALSE; } static void gtk_path_bar_grab_notify (GtkWidget *widget, gboolean was_grabbed) { if (!was_grabbed) gtk_path_bar_stop_scrolling (GTK_PATH_BAR (widget)); } static void gtk_path_bar_state_changed (GtkWidget *widget, GtkStateType previous_state) { if (!GTK_WIDGET_IS_SENSITIVE (widget)) gtk_path_bar_stop_scrolling (GTK_PATH_BAR (widget)); } /* Changes the icons wherever it is needed */ static void reload_icons (GtkPathBar *path_bar) { GList *list; if (path_bar->root_icon) { g_object_unref (path_bar->root_icon); path_bar->root_icon = NULL; } if (path_bar->home_icon) { g_object_unref (path_bar->home_icon); path_bar->home_icon = NULL; } if (path_bar->desktop_icon) { g_object_unref (path_bar->desktop_icon); path_bar->desktop_icon = NULL; } for (list = path_bar->button_list; list; list = list->next) { ButtonData *button_data; gboolean current_dir; button_data = BUTTON_DATA (list->data); if (button_data->type != NORMAL_BUTTON) { current_dir = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button_data->button)); gtk_path_bar_update_button_appearance (path_bar, button_data, current_dir); } } } static void change_icon_theme (GtkPathBar *path_bar) { GtkSettings *settings; gint width, height; settings = gtk_settings_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (path_bar))); if (gtk_icon_size_lookup_for_settings (settings, GTK_ICON_SIZE_BUTTON, &width, &height)) path_bar->icon_size = MAX (width, height); else path_bar->icon_size = FALLBACK_ICON_SIZE; reload_icons (path_bar); } /* Callback used when a GtkSettings value changes */ static void settings_notify_cb (GObject *object, GParamSpec *pspec, GtkPathBar *path_bar) { const char *name; name = g_param_spec_get_name (pspec); if (! strcmp (name, "gtk-icon-theme-name") || ! strcmp (name, "gtk-icon-sizes")) change_icon_theme (path_bar); } static void gtk_path_bar_check_icon_theme (GtkPathBar *path_bar) { GtkSettings *settings; if (path_bar->settings_signal_id) return; settings = gtk_settings_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (path_bar))); path_bar->settings_signal_id = g_signal_connect (settings, "notify", G_CALLBACK (settings_notify_cb), path_bar); change_icon_theme (path_bar); } /* Public functions and their helpers */ static void gtk_path_bar_clear_buttons (GtkPathBar *path_bar) { while (path_bar->button_list != NULL) { gtk_container_remove (GTK_CONTAINER (path_bar), BUTTON_DATA (path_bar->button_list->data)->button); } path_bar->first_scrolled_button = NULL; } static void button_clicked_cb (GtkWidget *button, gpointer data) { ButtonData *button_data; GtkPathBar *path_bar; GList *button_list; gboolean child_is_hidden; button_data = BUTTON_DATA (data); if (button_data->ignore_changes) return; path_bar = GTK_PATH_BAR (button->parent); button_list = g_list_find (path_bar->button_list, button_data); g_assert (button_list != NULL); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); if (button_list->prev) { ButtonData *child_data; child_data = BUTTON_DATA (button_list->prev->data); child_is_hidden = child_data->file_is_hidden; } else child_is_hidden = FALSE; g_signal_emit (path_bar, path_bar_signals [PATH_CLICKED], 0, button_data->path, child_is_hidden); } static GdkPixbuf * get_button_image (GtkPathBar *path_bar, ButtonType button_type) { GtkFileSystemVolume *volume; switch (button_type) { case ROOT_BUTTON: if (path_bar->root_icon != NULL) return path_bar->root_icon; volume = gtk_file_system_get_volume_for_path (path_bar->file_system, path_bar->root_path); if (volume == NULL) return NULL; path_bar->root_icon = gtk_file_system_volume_render_icon (path_bar->file_system, volume, GTK_WIDGET (path_bar), path_bar->icon_size, NULL); gtk_file_system_volume_free (path_bar->file_system, volume); return path_bar->root_icon; case HOME_BUTTON: if (path_bar->home_icon != NULL) return path_bar->home_icon; path_bar->home_icon = gtk_file_system_render_icon (path_bar->file_system, path_bar->home_path, GTK_WIDGET (path_bar), path_bar->icon_size, NULL); return path_bar->home_icon; case DESKTOP_BUTTON: if (path_bar->desktop_icon != NULL) return path_bar->desktop_icon; path_bar->desktop_icon = gtk_file_system_render_icon (path_bar->file_system, path_bar->desktop_path, GTK_WIDGET (path_bar), path_bar->icon_size, NULL); return path_bar->desktop_icon; default: return NULL; } return NULL; } static void button_data_free (ButtonData *button_data) { gtk_file_path_free (button_data->path); g_free (button_data->dir_name); g_free (button_data); } static const char * get_dir_name (ButtonData *button_data) { if (button_data->type == HOME_BUTTON) return _("Home"); else if (button_data->type == DESKTOP_BUTTON) return _("Desktop"); else return button_data->dir_name; } /* We always want to request the same size for the label, whether * or not the contents are bold */ static void label_size_request_cb (GtkWidget *widget, GtkRequisition *requisition, ButtonData *button_data) { const gchar *dir_name = get_dir_name (button_data); PangoLayout *layout = gtk_widget_create_pango_layout (button_data->label, dir_name); gint bold_width, bold_height; gchar *markup; pango_layout_get_pixel_size (layout, &requisition->width, &requisition->height); markup = g_markup_printf_escaped ("%s", dir_name); pango_layout_set_markup (layout, markup, -1); g_free (markup); pango_layout_get_pixel_size (layout, &bold_width, &bold_height); requisition->width = MAX (requisition->width, bold_width); requisition->height = MAX (requisition->height, bold_height); g_object_unref (layout); } static void gtk_path_bar_update_button_appearance (GtkPathBar *path_bar, ButtonData *button_data, gboolean current_dir) { const gchar *dir_name = get_dir_name (button_data); if (button_data->label != NULL) { if (current_dir) { char *markup; markup = g_markup_printf_escaped ("%s", dir_name); gtk_label_set_markup (GTK_LABEL (button_data->label), markup); g_free (markup); } else { gtk_label_set_text (GTK_LABEL (button_data->label), dir_name); } } if (button_data->image != NULL) { GdkPixbuf *pixbuf; pixbuf = get_button_image (path_bar, button_data->type); gtk_image_set_from_pixbuf (GTK_IMAGE (button_data->image), pixbuf); } if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button_data->button)) != current_dir) { button_data->ignore_changes = TRUE; gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button_data->button), current_dir); button_data->ignore_changes = FALSE; } } static ButtonType find_button_type (GtkPathBar *path_bar, GtkFilePath *path) { if (path_bar->root_path != NULL && ! gtk_file_path_compare (path, path_bar->root_path)) return ROOT_BUTTON; if (path_bar->home_path != NULL && ! gtk_file_path_compare (path, path_bar->home_path)) return HOME_BUTTON; if (path_bar->desktop_path != NULL && ! gtk_file_path_compare (path, path_bar->desktop_path)) return DESKTOP_BUTTON; return NORMAL_BUTTON; } static void button_drag_data_get_cb (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time_, gpointer data) { ButtonData *button_data; GtkPathBar *path_bar; char *uri; char *uri_list; button_data = data; path_bar = GTK_PATH_BAR (widget->parent); /* the button's parent *is* the path bar */ uri = gtk_file_system_path_to_uri (path_bar->file_system, button_data->path); uri_list = g_strconcat (uri, "\r\n", NULL); g_free (uri); gtk_selection_data_set (selection_data, selection_data->target, 8, uri_list, strlen (uri_list)); g_free (uri_list); } static ButtonData * make_directory_button (GtkPathBar *path_bar, const char *dir_name, GtkFilePath *path, gboolean current_dir, gboolean file_is_hidden) { const GtkTargetEntry targets[] = { { "text/uri-list", 0, 0 } }; GtkWidget *child = NULL; GtkWidget *label_alignment = NULL; ButtonData *button_data; file_is_hidden = !! file_is_hidden; /* Is it a special button? */ button_data = g_new0 (ButtonData, 1); button_data->type = find_button_type (path_bar, path); button_data->button = gtk_toggle_button_new (); switch (button_data->type) { case ROOT_BUTTON: button_data->image = gtk_image_new (); child = button_data->image; button_data->label = NULL; break; case HOME_BUTTON: case DESKTOP_BUTTON: button_data->image = gtk_image_new (); button_data->label = gtk_label_new (NULL); label_alignment = gtk_alignment_new (0.5, 0.5, 1.0, 1.0); gtk_container_add (GTK_CONTAINER (label_alignment), button_data->label); child = gtk_hbox_new (FALSE, 2); gtk_box_pack_start (GTK_BOX (child), button_data->image, FALSE, FALSE, 0); gtk_box_pack_start (GTK_BOX (child), label_alignment, FALSE, FALSE, 0); break; case NORMAL_BUTTON: default: button_data->label = gtk_label_new (NULL); label_alignment = gtk_alignment_new (0.5, 0.5, 1.0, 1.0); gtk_container_add (GTK_CONTAINER (label_alignment), button_data->label); child = label_alignment; button_data->image = NULL; } /* label_alignment is created because we can't override size-request * on label itself and still have the contents of the label centered * properly in the label's requisition */ if (label_alignment) g_signal_connect (label_alignment, "size-request", G_CALLBACK (label_size_request_cb), button_data); button_data->dir_name = g_strdup (dir_name); button_data->path = gtk_file_path_new_dup (gtk_file_path_get_string (path)); button_data->file_is_hidden = file_is_hidden; gtk_container_add (GTK_CONTAINER (button_data->button), child); gtk_widget_show_all (button_data->button); gtk_path_bar_update_button_appearance (path_bar, button_data, current_dir); g_signal_connect (button_data->button, "clicked", G_CALLBACK (button_clicked_cb), button_data); g_object_weak_ref (G_OBJECT (button_data->button), (GWeakNotify) button_data_free, button_data); gtk_drag_source_set (button_data->button, GDK_BUTTON1_MASK, targets, G_N_ELEMENTS (targets), GDK_ACTION_COPY); g_signal_connect (button_data->button, "drag-data-get", G_CALLBACK (button_drag_data_get_cb), button_data); return button_data; } 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) { ButtonData *button_data; button_data = list->data; if (! gtk_file_path_compare (file_path, button_data->path)) { current_path = list; break; } } if (current_path) { for (list = path_bar->button_list; list; list = list->next) { gtk_path_bar_update_button_appearance (path_bar, BUTTON_DATA (list->data), (list == current_path) ? TRUE : FALSE); } if (!gtk_widget_get_child_visible (BUTTON_DATA (current_path->data)->button)) { path_bar->first_scrolled_button = current_path; gtk_widget_queue_resize (GTK_WIDGET (path_bar)); } return TRUE; } return FALSE; } gboolean _gtk_path_bar_set_path (GtkPathBar *path_bar, const GtkFilePath *file_path, GError **error) { GtkFilePath *path; gboolean first_directory = TRUE; gboolean result; GList *new_buttons = NULL; g_return_val_if_fail (GTK_IS_PATH_BAR (path_bar), FALSE); g_return_val_if_fail (file_path != NULL, FALSE); result = TRUE; /* Check whether the new path is already present in the pathbar as buttons. * This could be a parent directory or a previous selected subdirectory. */ if (gtk_path_bar_check_parent_path (path_bar, file_path, path_bar->file_system)) return TRUE; path = gtk_file_path_copy (file_path); gtk_widget_push_composite_child (); while (path != NULL) { GtkFilePath *parent_path = NULL; ButtonData *button_data; const gchar *display_name; gboolean is_hidden; GtkFileFolder *file_folder; GtkFileInfo *file_info; gboolean valid; valid = gtk_file_system_get_parent (path_bar->file_system, path, &parent_path, error); if (!valid) { result = FALSE; gtk_file_path_free (path); break; } file_folder = gtk_file_system_get_folder (path_bar->file_system, parent_path ? parent_path : path, GTK_FILE_INFO_DISPLAY_NAME | GTK_FILE_INFO_IS_HIDDEN, NULL); if (!file_folder) { result = FALSE; gtk_file_path_free (parent_path); gtk_file_path_free (path); break; } file_info = gtk_file_folder_get_info (file_folder, parent_path ? path : NULL, error); g_object_unref (file_folder); if (!file_info) { result = FALSE; gtk_file_path_free (parent_path); gtk_file_path_free (path); break; } display_name = gtk_file_info_get_display_name (file_info); is_hidden = gtk_file_info_get_is_hidden (file_info); button_data = make_directory_button (path_bar, display_name, path, first_directory, is_hidden); gtk_file_info_free (file_info); gtk_file_path_free (path); g_object_ref (button_data->button); gtk_object_sink (GTK_OBJECT (button_data->button)); new_buttons = g_list_prepend (new_buttons, button_data); if (button_data->type != NORMAL_BUTTON) { gtk_file_path_free (parent_path); break; } path = parent_path; first_directory = FALSE; } if (result) { GList *l; gtk_path_bar_clear_buttons (path_bar); path_bar->button_list = g_list_reverse (new_buttons); for (l = path_bar->button_list; l; l = l->next) { GtkWidget *button = BUTTON_DATA (l->data)->button; gtk_container_add (GTK_CONTAINER (path_bar), button); } } else { GList *l; for (l = new_buttons; l; l = l->next) { ButtonData *button_data; button_data = BUTTON_DATA (l->data); gtk_widget_unref (button_data->button); button_data_free (button_data); } g_list_free (new_buttons); } gtk_widget_pop_composite_child (); return result; } /* FIXME: This should be a construct-only property */ void _gtk_path_bar_set_file_system (GtkPathBar *path_bar, GtkFileSystem *file_system) { const char *home; char *desktop; g_return_if_fail (GTK_IS_PATH_BAR (path_bar)); g_assert (path_bar->file_system == NULL); path_bar->file_system = g_object_ref (file_system); home = g_get_home_dir (); if (home != NULL) { path_bar->home_path = gtk_file_system_filename_to_path (path_bar->file_system, home); /* FIXME: Need file system backend specific way of getting the * Desktop path. */ desktop = g_build_filename (home, "Desktop", NULL); path_bar->desktop_path = gtk_file_system_filename_to_path (path_bar->file_system, desktop); g_free (desktop); } else { path_bar->home_path = NULL; path_bar->desktop_path = NULL; } path_bar->root_path = gtk_file_system_filename_to_path (path_bar->file_system, "/"); } /** * _gtk_path_bar_up: * @path_bar: a #GtkPathBar * * If the selected button in the pathbar is not the furthest button "up" (in the * root direction), act as if the user clicked on the next button up. **/ void _gtk_path_bar_up (GtkPathBar *path_bar) { GList *l; for (l = path_bar->button_list; l; l = l->next) { GtkWidget *button = BUTTON_DATA (l->data)->button; if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button))) { if (l->next) { GtkWidget *next_button = BUTTON_DATA (l->next->data)->button; button_clicked_cb (next_button, l->next->data); } break; } } } /** * _gtk_path_bar_down: * @path_bar: a #GtkPathBar * * If the selected button in the pathbar is not the furthest button "down" (in the * leaf direction), act as if the user clicked on the next button down. **/ void _gtk_path_bar_down (GtkPathBar *path_bar) { GList *l; for (l = path_bar->button_list; l; l = l->next) { GtkWidget *button = BUTTON_DATA (l->data)->button; if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button))) { if (l->prev) { GtkWidget *prev_button = BUTTON_DATA (l->prev->data)->button; button_clicked_cb (prev_button, l->prev->data); } break; } } }