gtk2/gtk/gtkpathbar.c
Jonathan Blandford 2ef8bbc976 use gtk_widget_push/pop_composite_child around internal buttons.
Wed Feb 25 03:52:58 2004  Jonathan Blandford  <jrb@gnome.org>

        * gtk/gtkpathbar.c: use gtk_widget_push/pop_composite_child around
        internal buttons.

        * gtk/gtkfilechooserdefault.c (struct _GtkFileChooserDefault):
        rename some widgets to make it clear where they are packed.
        (update_appearance): New function to handle all the 'logic' of
        layout in one place.  We aren't trying to keep all our properties
        in sync.
        (gtk_file_chooser_default_set_property): use update_appearance()
2004-02-25 08:55:48 +00:00

699 lines
20 KiB
C

/* 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 <string.h>
#include "gtkpathbar.h"
#include "gtktogglebutton.h"
#include "gtkarrow.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
enum {
PATH_CLICKED,
LAST_SIGNAL
};
static guint path_bar_signals [LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkPathBar,
gtk_path_bar,
GTK_TYPE_CONTAINER);
static void gtk_path_bar_finalize (GObject *object);
static void gtk_path_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_path_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_path_bar_direction_changed (GtkWidget *widget,
GtkTextDirection direction);
static void gtk_path_bar_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_path_bar_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_path_bar_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_path_bar_scroll_up (GtkWidget *button, GtkPathBar *path_bar);
static void gtk_path_bar_scroll_down (GtkWidget *button, GtkPathBar *path_bar);
static GtkWidget *
get_slider_button (GtkPathBar *path_bar)
{
GtkWidget *button;
gtk_widget_push_composite_child ();
button = gtk_button_new ();
gtk_container_add (GTK_CONTAINER (button), gtk_arrow_new (GTK_ARROW_RIGHT, GTK_SHADOW_OUT));
gtk_container_add (GTK_CONTAINER (path_bar), button);
gtk_widget_show_all (button);
gtk_widget_pop_composite_child ();
return button;
}
static void
gtk_path_bar_init (GtkPathBar *path_bar)
{
GTK_WIDGET_SET_FLAGS (path_bar, GTK_NO_WINDOW);
gtk_widget_set_redraw_on_allocate (GTK_WIDGET (path_bar), FALSE);
path_bar->spacing = 3;
path_bar->up_slider_button = get_slider_button (path_bar);
path_bar->down_slider_button = get_slider_button (path_bar);
g_signal_connect (path_bar->up_slider_button, "clicked", G_CALLBACK (gtk_path_bar_scroll_up), path_bar);
g_signal_connect (path_bar->down_slider_button, "clicked", G_CALLBACK (gtk_path_bar_scroll_down), path_bar);
}
static void
gtk_path_bar_class_init (GtkPathBarClass *path_bar_class)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
gobject_class = (GObjectClass *) path_bar_class;
object_class = (GtkObjectClass *) path_bar_class;
widget_class = (GtkWidgetClass *) path_bar_class;
container_class = (GtkContainerClass *) path_bar_class;
gobject_class->finalize = gtk_path_bar_finalize;
widget_class->size_request = gtk_path_bar_size_request;
widget_class->size_allocate = gtk_path_bar_size_allocate;
widget_class->direction_changed = gtk_path_bar_direction_changed;
container_class->add = gtk_path_bar_add;
container_class->forall = gtk_path_bar_forall;
container_class->remove = gtk_path_bar_remove;
/* FIXME: */
/* container_class->child_type = gtk_path_bar_child_type;*/
path_bar_signals [PATH_CLICKED] =
g_signal_new ("path_clicked",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkPathBarClass, path_clicked),
NULL, NULL,
_gtk_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
}
static void
gtk_path_bar_finalize (GObject *object)
{
GtkPathBar *path_bar;
path_bar = GTK_PATH_BAR (object);
g_list_free (path_bar->button_list);
G_OBJECT_CLASS (gtk_path_bar_parent_class)->finalize (object);
}
/* Size requisition:
*
* Ideally, our size is determined by another widget, and we are just filling
* available space.
*/
static void
gtk_path_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkPathBar *path_bar;
GtkRequisition child_requisition;
GList *list;
path_bar = GTK_PATH_BAR (widget);
requisition->width = 0;
requisition->height = 0;
for (list = path_bar->button_list; list; list = list->next)
{
gtk_widget_size_request (GTK_WIDGET (list->data),
&child_requisition);
requisition->width = MAX (child_requisition.width, requisition->width);
requisition->height = MAX (child_requisition.height, requisition->height);
}
/* Add space for slider, if we have more than one path */
/* Theoretically, the slider could be bigger than the other button. But we're
* not going to worry about that now.
*/
path_bar->slider_width = requisition->height / 2 + 5;
if (path_bar->button_list && path_bar->button_list->next != NULL)
requisition->width += (path_bar->spacing + path_bar->slider_width) * 2;
gtk_widget_size_request (path_bar->up_slider_button, &child_requisition);
gtk_widget_size_request (path_bar->down_slider_button, &child_requisition);
requisition->width += GTK_CONTAINER (widget)->border_width * 2;
requisition->height += GTK_CONTAINER (widget)->border_width * 2;
widget->requisition = *requisition;
}
static void
gtk_path_bar_update_slider_buttons (GtkPathBar *path_bar)
{
GtkTextDirection direction;
direction = gtk_widget_get_direction (GTK_WIDGET (path_bar));
if (direction == GTK_TEXT_DIR_RTL)
{
GtkWidget *arrow;
arrow = gtk_bin_get_child (GTK_BIN (path_bar->up_slider_button));
g_object_set (arrow, "arrow_type", GTK_ARROW_RIGHT, NULL);
arrow = gtk_bin_get_child (GTK_BIN (path_bar->down_slider_button));
g_object_set (arrow, "arrow_type", GTK_ARROW_LEFT, NULL);
}
else
{
GtkWidget *arrow;
arrow = gtk_bin_get_child (GTK_BIN (path_bar->up_slider_button));
g_object_set (arrow, "arrow_type", GTK_ARROW_LEFT, NULL);
arrow = gtk_bin_get_child (GTK_BIN (path_bar->down_slider_button));
g_object_set (arrow, "arrow_type", GTK_ARROW_RIGHT, NULL);
}
if (path_bar->button_list)
{
GtkWidget *button;
button = path_bar->button_list->data;
if (gtk_widget_get_child_visible (button))
gtk_widget_set_sensitive (path_bar->down_slider_button, FALSE);
else
gtk_widget_set_sensitive (path_bar->down_slider_button, TRUE);
button = g_list_last (path_bar->button_list)->data;
if (gtk_widget_get_child_visible (button))
gtk_widget_set_sensitive (path_bar->up_slider_button, FALSE);
else
gtk_widget_set_sensitive (path_bar->up_slider_button, TRUE);
}
}
/* This is a tad complicated
*/
static void
gtk_path_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWidget *child;
GtkPathBar *path_bar = GTK_PATH_BAR (widget);
GtkTextDirection direction;
GtkAllocation child_allocation;
GList *list, *first_button;
gint width;
gint allocation_width;
gint border_width;
gboolean need_sliders = FALSE;
gint up_slider_offset = 0;
gint down_slider_offset = 0;
widget->allocation = *allocation;
/* No path is set; we don't have to allocate anything. */
if (path_bar->button_list == NULL)
return;
direction = gtk_widget_get_direction (widget);
border_width = (gint) GTK_CONTAINER (path_bar)->border_width;
allocation_width = allocation->width - 2 * border_width;
/* First, we check to see if we need the scrollbars. */
width = GTK_WIDGET (path_bar->button_list->data)->requisition.width;
for (list = path_bar->button_list->next; list; list = list->next)
{
child = GTK_WIDGET (list->data);
width += child->requisition.width + path_bar->spacing;
}
if (width <= allocation_width)
{
first_button = g_list_last (path_bar->button_list);
}
else
{
gboolean reached_end = FALSE;
gint slider_space = 2 * (path_bar->spacing + path_bar->slider_width);
if (path_bar->first_scrolled_button)
first_button = path_bar->first_scrolled_button;
else
first_button = path_bar->button_list;
need_sliders = TRUE;
/* To see how much space we have, and how many buttons we can display.
* We start at the first button, count forward until hit the new
* button, then count backwards.
*/
/* Count down the path chain towards the end. */
width = GTK_WIDGET (first_button->data)->requisition.width;
list = first_button->prev;
while (list && !reached_end)
{
child = GTK_WIDGET (list->data);
if (width + child->requisition.width +
path_bar->spacing + slider_space > allocation_width)
reached_end = TRUE;
else
width += child->requisition.width + path_bar->spacing;
list = list->prev;
}
/* Finally, we walk up, seeing how many of the previous buttons we can
* add */
while (first_button->next && ! reached_end)
{
child = GTK_WIDGET (first_button->next->data);
if (width + child->requisition.width + path_bar->spacing + slider_space > allocation_width)
{
reached_end = TRUE;
}
else
{
width += child->requisition.width + path_bar->spacing;
first_button = first_button->next;
}
}
}
/* Now, we allocate space to the buttons */
child_allocation.y = allocation->y + border_width;
child_allocation.height = MAX (1, (gint) allocation->height - border_width * 2);
if (direction == GTK_TEXT_DIR_RTL)
{
child_allocation.x = allocation->x + allocation->width - border_width;
if (need_sliders)
{
child_allocation.x -= (path_bar->spacing + path_bar->slider_width);
up_slider_offset = allocation->width - border_width - path_bar->slider_width;
}
}
else
{
child_allocation.x = allocation->x + border_width;
if (need_sliders)
{
up_slider_offset = border_width;
child_allocation.x += (path_bar->spacing + path_bar->slider_width);
}
}
for (list = first_button; list; list = list->prev)
{
child = GTK_WIDGET (list->data);
child_allocation.width = child->requisition.width;
if (direction == GTK_TEXT_DIR_RTL)
child_allocation.x -= child_allocation.width;
/* Check to see if we've don't have any more space to allocate buttons */
if (need_sliders && direction == GTK_TEXT_DIR_RTL)
{
if (child_allocation.x - path_bar->spacing - path_bar->slider_width < widget->allocation.x + border_width)
break;
}
else if (need_sliders && direction == GTK_TEXT_DIR_LTR)
{
if (child_allocation.x + child_allocation.width + path_bar->spacing + path_bar->slider_width >
widget->allocation.x + border_width + allocation_width)
break;
}
gtk_widget_set_child_visible (list->data, TRUE);
gtk_widget_size_allocate (child, &child_allocation);
if (direction == GTK_TEXT_DIR_RTL)
{
child_allocation.x -= path_bar->spacing;
down_slider_offset = child_allocation.x - widget->allocation.x - path_bar->slider_width;
}
else
{
child_allocation.x += child_allocation.width + path_bar->spacing;
down_slider_offset = child_allocation.x - widget->allocation.x;
}
}
/* Now we go hide all the widgets that don't fit */
while (list)
{
gtk_widget_set_child_visible (list->data, FALSE);
list = list->prev;
}
for (list = first_button->next; list; list = list->next)
{
gtk_widget_set_child_visible (list->data, FALSE);
}
if (need_sliders)
{
child_allocation.width = path_bar->slider_width;
child_allocation.x = up_slider_offset + allocation->x;
gtk_widget_size_allocate (path_bar->up_slider_button, &child_allocation);
child_allocation.x = down_slider_offset + allocation->x;
gtk_widget_size_allocate (path_bar->down_slider_button, &child_allocation);
gtk_widget_set_child_visible (path_bar->up_slider_button, TRUE);
gtk_widget_set_child_visible (path_bar->down_slider_button, TRUE);
gtk_widget_show_all (path_bar->up_slider_button);
gtk_widget_show_all (path_bar->down_slider_button);
gtk_path_bar_update_slider_buttons (path_bar);
}
else
{
gtk_widget_set_child_visible (path_bar->up_slider_button, FALSE);
gtk_widget_set_child_visible (path_bar->down_slider_button, FALSE);
}
}
static void
gtk_path_bar_direction_changed (GtkWidget *widget,
GtkTextDirection direction)
{
gtk_path_bar_update_slider_buttons (GTK_PATH_BAR (widget));
(* GTK_WIDGET_CLASS (gtk_path_bar_parent_class)->direction_changed) (widget, direction);
}
static void
gtk_path_bar_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_widget_set_parent (widget, GTK_WIDGET (container));
}
static void
gtk_path_bar_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkPathBar *path_bar;
GList *children;
path_bar = GTK_PATH_BAR (container);
children = path_bar->button_list;
while (children)
{
if (widget == children->data)
{
gboolean was_visible;
was_visible = GTK_WIDGET_VISIBLE (widget);
gtk_widget_unparent (widget);
path_bar->button_list = g_list_remove_link (path_bar->button_list, children);
g_list_free (children);
if (was_visible)
gtk_widget_queue_resize (GTK_WIDGET (container));
break;
}
children = children->next;
}
}
static void
gtk_path_bar_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkPathBar *path_bar;
GList *children;
g_return_if_fail (callback != NULL);
path_bar = GTK_PATH_BAR (container);
children = path_bar->button_list;
while (children)
{
GtkWidget *child;
child = children->data;
children = children->next;
(* callback) (child, callback_data);
}
(* callback) (path_bar->up_slider_button, callback_data);
(* callback) (path_bar->down_slider_button, callback_data);
}
static void
gtk_path_bar_scroll_down (GtkWidget *button, GtkPathBar *path_bar)
{
GList *list;
GList *down_button = NULL;
GList *up_button = NULL;
gint space_available;
gint space_needed;
gint border_width;
GtkTextDirection direction;
border_width = GTK_CONTAINER (path_bar)->border_width;
direction = gtk_widget_get_direction (GTK_WIDGET (path_bar));
/* We find the button at the 'down' end that we have to make
* visible */
for (list = path_bar->button_list; list; list = list->next)
{
if (list->next && gtk_widget_get_child_visible (GTK_WIDGET (list->next->data)))
{
down_button = list;
break;
}
}
/* Find the last visible button on the 'up' end
*/
for (list = g_list_last (path_bar->button_list); list; list = list->prev)
{
if (gtk_widget_get_child_visible (GTK_WIDGET (list->data)))
{
up_button = list;
break;
}
}
space_needed = GTK_WIDGET (down_button->data)->allocation.width + path_bar->spacing;
if (direction == GTK_TEXT_DIR_RTL)
space_available = GTK_WIDGET (path_bar)->allocation.x + GTK_WIDGET (path_bar)->allocation.width;
else
space_available = (GTK_WIDGET (path_bar)->allocation.x + GTK_WIDGET (path_bar)->allocation.width - border_width) -
(path_bar->down_slider_button->allocation.x + path_bar->down_slider_button->allocation.width);
/* We have space_available extra space that's not being used. We
* need space_needed space to make the button fit. So we walk down
* from the end, removing buttons until we get all the space we
* need. */
while (space_available < space_needed)
{
space_available += GTK_WIDGET (up_button->data)->allocation.width + path_bar->spacing;
up_button = up_button->prev;
path_bar->first_scrolled_button = up_button;
}
}
static void
gtk_path_bar_scroll_up (GtkWidget *button, GtkPathBar *path_bar)
{
GList *list;
for (list = g_list_last (path_bar->button_list); list; list = list->prev)
{
if (list->prev && gtk_widget_get_child_visible (GTK_WIDGET (list->prev->data)))
{
path_bar->first_scrolled_button = list;
return;
}
}
}
/* Public functions. */
static void
gtk_path_bar_clear_buttons (GtkPathBar *path_bar)
{
while (path_bar->button_list != NULL)
{
gtk_container_remove (GTK_CONTAINER (path_bar), path_bar->button_list->data);
}
path_bar->first_scrolled_button = NULL;
}
static void
button_clicked_cb (GtkWidget *button,
gpointer data)
{
GtkWidget *path_bar;
GtkFilePath *file_path;
path_bar = button->parent;
g_assert (path_bar);
file_path = gtk_file_path_new_dup ((char *)data);
g_signal_emit (path_bar, path_bar_signals [PATH_CLICKED], 0, file_path);
gtk_file_path_free (file_path);
}
static GtkWidget *
make_directory_button (const char *dir_name,
GtkFilePath *path,
gboolean current_dir)
{
GtkWidget *button, *label;
button = gtk_toggle_button_new ();
if (current_dir)
{
/* Yay gsignal! */
g_signal_connect (G_OBJECT (button), "toggled",
G_CALLBACK (gtk_toggle_button_set_active),
GINT_TO_POINTER (TRUE));
}
else
{
gchar *str;
/* FIXME: gtk_file_path_free is not be a function!! I have to
* copy it to a string in order to manage this correctly */
str = g_strdup (gtk_file_path_get_string (path));
g_signal_connect (button, "clicked",
G_CALLBACK (button_clicked_cb),
str);
g_object_weak_ref (G_OBJECT (button), (GWeakNotify) g_free, str);
}
label = gtk_label_new (NULL);
if (current_dir)
{
gchar *label_str;
label_str = g_markup_printf_escaped ("<b>%s</b>", dir_name);
gtk_label_set_markup (GTK_LABEL (label), label_str);
g_free (label_str);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
}
else
{
gtk_label_set_text (GTK_LABEL (label), dir_name);
}
gtk_container_add (GTK_CONTAINER (button), label);
gtk_widget_show_all (button);
return button;
}
void
gtk_path_bar_set_path (GtkPathBar *path_bar,
const GtkFilePath *file_path,
GtkFileSystem *file_system,
GError **error)
{
GtkFilePath *path;
gboolean first_directory = TRUE;
g_return_if_fail (GTK_IS_PATH_BAR (path_bar));
g_return_if_fail (file_path != NULL);
g_return_if_fail (file_system != NULL);
gtk_path_bar_clear_buttons (path_bar);
path = gtk_file_path_copy (file_path);
gtk_widget_push_composite_child ();
while (path != NULL)
{
GtkFilePath *parent_path = NULL;
GtkWidget *button;
const gchar *display_name;
GError *err = NULL;
GtkFileFolder *file_folder;
GtkFileInfo *file_info;
gboolean valid;
valid = gtk_file_system_get_parent (file_system,
path,
&parent_path,
&err);
if (!valid)
{
g_propagate_error (error, err);
g_error_free (err);
gtk_file_path_free (path);
break;
}
if (parent_path)
file_folder = gtk_file_system_get_folder (file_system, parent_path,
GTK_FILE_INFO_DISPLAY_NAME, NULL);
else
file_folder = gtk_file_system_get_folder (file_system, path,
GTK_FILE_INFO_DISPLAY_NAME, NULL);
file_info = gtk_file_folder_get_info (file_folder, path, NULL);
display_name = gtk_file_info_get_display_name (file_info);
if (! strcmp ("/", display_name))
display_name = " / ";
button = make_directory_button (display_name, path, first_directory);
gtk_file_info_free (file_info);
gtk_file_path_free (path);
g_object_unref (file_folder);
gtk_container_add (GTK_CONTAINER (path_bar), button);
path_bar->button_list = g_list_prepend (path_bar->button_list, button);
path = parent_path;
first_directory = FALSE;
}
gtk_widget_pop_composite_child ();
path_bar->button_list = g_list_reverse (path_bar->button_list);
}