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gtk/gtk/gtkpathbar.c
Matthias Clasen 82ce59cd0f Remove unnecessary NULL checks before g_free(). (#369666, Morten Welinder, 
2007-03-09  Matthias Clasen <mclasen@redhat.com>

        * Everywhere: Remove unnecessary NULL checks before
        g_free().  (#369666, Morten Welinder, Djihed Afifi)

        * configure.in: Check for ftw.h



svn path=/trunk/; revision=17444
2007-03-09 21:57:37 +00:00

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46 KiB
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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* gtkpathbar.c
* 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 <config.h>
#include <string.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"
#include "gtkalias.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_DELAY_FACTOR 5
static guint path_bar_signals [LAST_SIGNAL] = { 0 };
/* Icon size for if we can't get it from the theme */
#define FALLBACK_ICON_SIZE 16
typedef struct _ButtonData ButtonData;
struct _ButtonData
{
GtkWidget *button;
ButtonType type;
char *dir_name;
GtkFilePath *path;
GtkWidget *image;
GtkWidget *label;
GtkFileSystemHandle *handle;
guint ignore_changes : 1;
guint file_is_hidden : 1;
};
/* This macro is used to check if a button can be used as a fake root.
* All buttons in front of a fake root are automatically hidden when in a
* directory below a fake root and replaced with the "<" arrow button.
*/
#define BUTTON_IS_FAKE_ROOT(button) ((button)->type == HOME_BUTTON)
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_unmap (GtkWidget *widget);
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 void gtk_path_bar_stop_scrolling (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 void
on_slider_unmap (GtkWidget *widget,
GtkPathBar *path_bar)
{
if (path_bar->timer &&
((widget == path_bar->up_slider_button && path_bar->scrolling_up) ||
(widget == path_bar->down_slider_button && path_bar->scrolling_down)))
gtk_path_bar_stop_scrolling (path_bar);
}
static GtkWidget *
get_slider_button (GtkPathBar *path_bar,
GtkArrowType arrow_type)
{
GtkWidget *button;
gtk_widget_push_composite_child ();
button = gtk_button_new ();
gtk_button_set_focus_on_click (GTK_BUTTON (button), FALSE);
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);
g_signal_connect (G_OBJECT (button), "unmap",
G_CALLBACK (on_slider_unmap), path_bar);
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->set_path_handle = NULL;
path_bar->spacing = 0;
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->unmap = gtk_path_bar_unmap;
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 (I_("path-clicked"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkPathBarClass, path_clicked),
NULL, NULL,
_gtk_marshal_VOID__POINTER_POINTER_BOOLEAN,
G_TYPE_NONE, 3,
G_TYPE_POINTER,
G_TYPE_POINTER,
G_TYPE_BOOLEAN);
}
static void
gtk_path_bar_finalize (GObject *object)
{
GtkPathBar *path_bar;
path_bar = GTK_PATH_BAR (object);
gtk_path_bar_stop_scrolling (path_bar);
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)
{
GtkPathBar *path_bar = GTK_PATH_BAR (object);
remove_settings_signal (path_bar, gtk_widget_get_screen (GTK_WIDGET (object)));
if (path_bar->set_path_handle)
gtk_file_system_cancel_operation (path_bar->set_path_handle);
path_bar->set_path_handle = NULL;
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_path_bar_stop_scrolling (path_bar);
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_path_bar_stop_scrolling (path_bar);
gtk_widget_set_sensitive (path_bar->up_slider_button, FALSE);
}
else
gtk_widget_set_sensitive (path_bar->up_slider_button, TRUE);
}
}
static void
gtk_path_bar_unmap (GtkWidget *widget)
{
gtk_path_bar_stop_scrolling (GTK_PATH_BAR (widget));
GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->unmap (widget);
}
/* 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. */
if (path_bar->fake_root)
width = path_bar->spacing + path_bar->slider_width;
else
width = 0;
for (list = path_bar->button_list; list; list = list->next)
{
child = BUTTON_DATA (list->data)->button;
width += child->requisition.width + path_bar->spacing;
if (list == path_bar->fake_root)
break;
}
if (width <= allocation_width)
{
if (path_bar->fake_root)
first_button = path_bar->fake_root;
else
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 if (list == path_bar->fake_root)
break;
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;
if (first_button == path_bar->fake_root)
break;
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 || path_bar->fake_root)
{
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 || path_bar->fake_root)
{
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 || path_bar->fake_root)
{
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);
gtk_widget_set_child_visible (path_bar->up_slider_button, TRUE);
gtk_widget_show_all (path_bar->up_slider_button);
}
else
gtk_widget_set_child_visible (path_bar->up_slider_button, FALSE);
if (need_sliders)
{
child_allocation.width = path_bar->slider_width;
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->down_slider_button, TRUE);
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->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))
{
if (list->prev == path_bar->fake_root)
path_bar->fake_root = NULL;
path_bar->first_scrolled_button = list;
return;
}
}
}
static gboolean
gtk_path_bar_scroll_timeout (GtkPathBar *path_bar)
{
gboolean retval = FALSE;
if (path_bar->timer)
{
if (path_bar->scrolling_up)
gtk_path_bar_scroll_up (path_bar->up_slider_button, path_bar);
else if (path_bar->scrolling_down)
gtk_path_bar_scroll_down (path_bar->down_slider_button, path_bar);
if (path_bar->need_timer)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (path_bar));
guint timeout;
g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
path_bar->need_timer = FALSE;
path_bar->timer = gdk_threads_add_timeout (timeout * SCROLL_DELAY_FACTOR,
(GSourceFunc)gtk_path_bar_scroll_timeout,
path_bar);
}
else
retval = TRUE;
}
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 (event->type != GDK_BUTTON_PRESS || event->button != 1)
return FALSE;
path_bar->ignore_click = FALSE;
if (widget == path_bar->up_slider_button)
{
path_bar->scrolling_down = FALSE;
path_bar->scrolling_up = TRUE;
gtk_path_bar_scroll_up (path_bar->up_slider_button, path_bar);
}
else if (widget == path_bar->down_slider_button)
{
path_bar->scrolling_up = FALSE;
path_bar->scrolling_down = TRUE;
gtk_path_bar_scroll_down (path_bar->down_slider_button, path_bar);
}
if (!path_bar->timer)
{
GtkSettings *settings = gtk_widget_get_settings (widget);
guint timeout;
g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
path_bar->need_timer = TRUE;
path_bar->timer = gdk_threads_add_timeout (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_MENU, &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;
path_bar->fake_root = NULL;
}
static void
button_clicked_cb (GtkWidget *button,
gpointer data)
{
ButtonData *button_data;
GtkPathBar *path_bar;
GList *button_list;
gboolean child_is_hidden;
GtkFilePath *child_path;
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);
g_signal_handlers_block_by_func (button,
G_CALLBACK (button_clicked_cb), data);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
g_signal_handlers_unblock_by_func (button,
G_CALLBACK (button_clicked_cb), data);
if (button_list->prev)
{
ButtonData *child_data;
child_data = BUTTON_DATA (button_list->prev->data);
child_path = child_data->path;
child_is_hidden = child_data->file_is_hidden;
}
else
{
child_path = NULL;
child_is_hidden = FALSE;
}
g_signal_emit (path_bar, path_bar_signals [PATH_CLICKED], 0,
button_data->path, child_path, child_is_hidden);
}
struct SetButtonImageData
{
GtkPathBar *path_bar;
ButtonData *button_data;
};
static void
set_button_image_get_info_cb (GtkFileSystemHandle *handle,
const GtkFileInfo *info,
const GError *error,
gpointer user_data)
{
gboolean cancelled = handle->cancelled;
GdkPixbuf *pixbuf;
struct SetButtonImageData *data = user_data;
if (handle != data->button_data->handle)
goto out;
data->button_data->handle = NULL;
if (!data->button_data->button)
{
g_free (data->button_data);
goto out;
}
if (cancelled || error)
goto out;
pixbuf = gtk_file_info_render_icon (info, GTK_WIDGET (data->path_bar),
data->path_bar->icon_size, NULL);
gtk_image_set_from_pixbuf (GTK_IMAGE (data->button_data->image), pixbuf);
switch (data->button_data->type)
{
case HOME_BUTTON:
if (data->path_bar->home_icon)
g_object_unref (pixbuf);
else
data->path_bar->home_icon = pixbuf;
break;
case DESKTOP_BUTTON:
if (data->path_bar->desktop_icon)
g_object_unref (pixbuf);
else
data->path_bar->desktop_icon = pixbuf;
break;
default:
break;
};
out:
g_free (data);
g_object_unref (handle);
}
static void
set_button_image (GtkPathBar *path_bar,
ButtonData *button_data)
{
GtkFileSystemVolume *volume;
struct SetButtonImageData *data;
switch (button_data->type)
{
case ROOT_BUTTON:
if (path_bar->root_icon != NULL)
{
gtk_image_set_from_pixbuf (GTK_IMAGE (button_data->image), path_bar->root_icon);
break;
}
volume = gtk_file_system_get_volume_for_path (path_bar->file_system, path_bar->root_path);
if (volume == NULL)
return;
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);
gtk_image_set_from_pixbuf (GTK_IMAGE (button_data->image), path_bar->root_icon);
break;
case HOME_BUTTON:
if (path_bar->home_icon != NULL)
{
gtk_image_set_from_pixbuf (GTK_IMAGE (button_data->image), path_bar->home_icon);
break;
}
data = g_new0 (struct SetButtonImageData, 1);
data->path_bar = path_bar;
data->button_data = button_data;
if (button_data->handle)
gtk_file_system_cancel_operation (button_data->handle);
button_data->handle =
gtk_file_system_get_info (path_bar->file_system,
path_bar->home_path,
GTK_FILE_INFO_ICON,
set_button_image_get_info_cb,
data);
break;
case DESKTOP_BUTTON:
if (path_bar->desktop_icon != NULL)
{
gtk_image_set_from_pixbuf (GTK_IMAGE (button_data->image), path_bar->desktop_icon);
break;
}
data = g_new0 (struct SetButtonImageData, 1);
data->path_bar = path_bar;
data->button_data = button_data;
if (button_data->handle)
gtk_file_system_cancel_operation (button_data->handle);
button_data->handle =
gtk_file_system_get_info (path_bar->file_system,
path_bar->desktop_path,
GTK_FILE_INFO_ICON,
set_button_image_get_info_cb,
data);
break;
default:
break;
}
}
static void
button_data_free (ButtonData *button_data)
{
if (button_data->path)
gtk_file_path_free (button_data->path);
button_data->path = NULL;
g_free (button_data->dir_name);
button_data->dir_name = NULL;
button_data->button = NULL;
if (button_data->handle)
gtk_file_system_cancel_operation (button_data->handle);
else
g_free (button_data);
}
static const char *
get_dir_name (ButtonData *button_data)
{
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 ("<b>%s</b>", 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 ("<b>%s</b>", 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)
{
set_button_image (path_bar, button_data);
}
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,
(guchar *)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 ();
gtk_button_set_focus_on_click (GTK_BUTTON (button_data->button), FALSE);
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;
gboolean need_new_fake_root = FALSE;
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 (list == path_bar->fake_root)
need_new_fake_root = TRUE;
}
if (current_path)
{
if (need_new_fake_root)
{
path_bar->fake_root = NULL;
for (list = current_path; list; list = list->next)
{
ButtonData *button_data;
button_data = list->data;
if (BUTTON_IS_FAKE_ROOT (button_data))
{
path_bar->fake_root = list;
break;
}
}
}
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;
}
struct SetPathInfo
{
GtkFilePath *path;
GtkFilePath *parent_path;
GtkPathBar *path_bar;
GList *new_buttons;
GList *fake_root;
gboolean first_directory;
};
static void
gtk_path_bar_set_path_finish (struct SetPathInfo *info,
gboolean result)
{
if (result)
{
GList *l;
gtk_path_bar_clear_buttons (info->path_bar);
info->path_bar->button_list = g_list_reverse (info->new_buttons);
info->path_bar->fake_root = info->fake_root;
for (l = info->path_bar->button_list; l; l = l->next)
{
GtkWidget *button = BUTTON_DATA (l->data)->button;
gtk_container_add (GTK_CONTAINER (info->path_bar), button);
}
}
else
{
GList *l;
for (l = info->new_buttons; l; l = l->next)
{
ButtonData *button_data;
button_data = BUTTON_DATA (l->data);
gtk_widget_destroy (button_data->button);
}
g_list_free (info->new_buttons);
}
if (info->path)
gtk_file_path_free (info->path);
if (info->parent_path)
gtk_file_path_free (info->parent_path);
g_free (info);
}
static void
gtk_path_bar_get_info_callback (GtkFileSystemHandle *handle,
const GtkFileInfo *file_info,
const GError *error,
gpointer data)
{
gboolean cancelled = handle->cancelled;
struct SetPathInfo *path_info = data;
ButtonData *button_data;
const gchar *display_name;
gboolean is_hidden;
gboolean valid;
if (handle != path_info->path_bar->set_path_handle)
{
gtk_path_bar_set_path_finish (path_info, FALSE);
g_object_unref (handle);
return;
}
g_object_unref (handle);
path_info->path_bar->set_path_handle = NULL;
if (cancelled || !file_info)
{
gtk_path_bar_set_path_finish (path_info, FALSE);
return;
}
display_name = gtk_file_info_get_display_name (file_info);
is_hidden = gtk_file_info_get_is_hidden (file_info);
gtk_widget_push_composite_child ();
button_data = make_directory_button (path_info->path_bar, display_name,
path_info->path,
path_info->first_directory, is_hidden);
gtk_widget_pop_composite_child ();
gtk_file_path_free (path_info->path);
path_info->new_buttons = g_list_prepend (path_info->new_buttons, button_data);
if (BUTTON_IS_FAKE_ROOT (button_data))
path_info->fake_root = path_info->new_buttons;
path_info->path = path_info->parent_path;
path_info->first_directory = FALSE;
if (!path_info->path)
{
gtk_path_bar_set_path_finish (path_info, TRUE);
return;
}
valid = gtk_file_system_get_parent (path_info->path_bar->file_system,
path_info->path,
&path_info->parent_path,
NULL);
if (!valid)
{
gtk_path_bar_set_path_finish (path_info, FALSE);
return;
}
path_info->path_bar->set_path_handle =
gtk_file_system_get_info (handle->file_system,
path_info->path,
GTK_FILE_INFO_DISPLAY_NAME | GTK_FILE_INFO_IS_HIDDEN,
gtk_path_bar_get_info_callback,
path_info);
}
gboolean
_gtk_path_bar_set_path (GtkPathBar *path_bar,
const GtkFilePath *file_path,
const gboolean keep_trail,
GError **error)
{
struct SetPathInfo *info;
gboolean result;
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 (keep_trail &&
gtk_path_bar_check_parent_path (path_bar, file_path, path_bar->file_system))
return TRUE;
info = g_new0 (struct SetPathInfo, 1);
info->path = gtk_file_path_copy (file_path);
info->path_bar = path_bar;
info->first_directory = TRUE;
result = gtk_file_system_get_parent (path_bar->file_system,
info->path, &info->parent_path, error);
if (!result)
{
gtk_file_path_free (info->path);
g_free (info);
return result;
}
if (path_bar->set_path_handle)
gtk_file_system_cancel_operation (path_bar->set_path_handle);
path_bar->set_path_handle =
gtk_file_system_get_info (path_bar->file_system,
info->path,
GTK_FILE_INFO_DISPLAY_NAME | GTK_FILE_INFO_IS_HIDDEN,
gtk_path_bar_get_info_callback,
info);
return TRUE;
}
/* 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;
}
}
}
#define __GTK_PATH_BAR_C__
#include "gtkaliasdef.c"
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