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|
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
* Nautilus
*
* Copyright (C) 2000, 2001 Eazel, Inc.
*
* Nautilus is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Andy Hertzfeld <andy@eazel.com>
*/
/* This is the sidebar title widget, which is the title part of the sidebar. */
#include <config.h>
#include <math.h>
#include "nautilus-sidebar-title.h"
#include "nautilus-window.h"
#include <eel/eel-background.h>
#include <eel/eel-gdk-extensions.h>
#include <eel/eel-gdk-pixbuf-extensions.h>
#include <eel/eel-glib-extensions.h>
#include <eel/eel-gtk-extensions.h>
#include <eel/eel-gtk-macros.h>
#include <eel/eel-pango-extensions.h>
#include <eel/eel-string.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <libnautilus-private/nautilus-file-attributes.h>
#include <libnautilus-private/nautilus-global-preferences.h>
#include <libnautilus-private/nautilus-metadata.h>
#include <libnautilus-private/nautilus-sidebar.h>
#include <string.h>
#include <stdlib.h>
/* maximum allowable size to be displayed as the title */
#define MAX_TITLE_SIZE 256
#define MINIMUM_INFO_WIDTH 32
#define SIDEBAR_INFO_MARGIN 4
#define SHADOW_OFFSET 1
#define MORE_INFO_FONT_SIZE 12
#define MIN_TITLE_FONT_SIZE 12
#define TITLE_PADDING 4
static void nautilus_sidebar_title_class_init (NautilusSidebarTitleClass *klass);
static void nautilus_sidebar_title_destroy (GtkObject *object);
static void nautilus_sidebar_title_init (NautilusSidebarTitle *pixmap);
static void nautilus_sidebar_title_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void update_icon (NautilusSidebarTitle *sidebar_title);
static GtkWidget * sidebar_title_create_title_label (void);
static GtkWidget * sidebar_title_create_more_info_label (void);
static void update_all (NautilusSidebarTitle *sidebar_title);
static void update_more_info (NautilusSidebarTitle *sidebar_title);
static void update_title_font (NautilusSidebarTitle *sidebar_title);
static void style_set (GtkWidget *widget,
GtkStyle *previous_style);
static guint get_best_icon_size (NautilusSidebarTitle *sidebar_title);
struct NautilusSidebarTitleDetails {
NautilusFile *file;
guint file_changed_connection;
gboolean monitoring_count;
char *title_text;
GtkWidget *icon;
GtkWidget *title_label;
GtkWidget *more_info_label;
GtkWidget *emblem_box;
guint best_icon_size;
gboolean determined_icon;
};
EEL_CLASS_BOILERPLATE (NautilusSidebarTitle, nautilus_sidebar_title, gtk_vbox_get_type ())
static void
nautilus_sidebar_title_class_init (NautilusSidebarTitleClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
object_class->destroy = nautilus_sidebar_title_destroy;
widget_class->size_allocate = nautilus_sidebar_title_size_allocate;
widget_class->style_set = style_set;
}
static void
style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
NautilusSidebarTitle *sidebar_title;
PangoFontDescription *font_desc;
GtkStyle *style;
g_return_if_fail (NAUTILUS_IS_SIDEBAR_TITLE (widget));
sidebar_title = NAUTILUS_SIDEBAR_TITLE (widget);
/* Update the dynamically-sized title font */
update_title_font (sidebar_title);
/* Update the fixed-size "more info" font */
style = gtk_widget_get_style (widget);
font_desc = pango_font_description_copy (style->font_desc);
if (pango_font_description_get_size (font_desc) < MORE_INFO_FONT_SIZE * PANGO_SCALE) {
pango_font_description_set_size (font_desc, MORE_INFO_FONT_SIZE * PANGO_SCALE);
}
gtk_widget_modify_font (sidebar_title->details->more_info_label,
font_desc);
pango_font_description_free (font_desc);
}
static void
nautilus_sidebar_title_init (NautilusSidebarTitle *sidebar_title)
{
sidebar_title->details = g_new0 (NautilusSidebarTitleDetails, 1);
/* Create the icon */
sidebar_title->details->icon = gtk_image_new ();
gtk_box_pack_start (GTK_BOX (sidebar_title), sidebar_title->details->icon, 0, 0, 0);
gtk_widget_show (sidebar_title->details->icon);
/* Create the title label */
sidebar_title->details->title_label = sidebar_title_create_title_label ();
gtk_box_pack_start (GTK_BOX (sidebar_title), sidebar_title->details->title_label, 0, 0, 0);
gtk_widget_show (sidebar_title->details->title_label);
/* Create the more info label */
sidebar_title->details->more_info_label = sidebar_title_create_more_info_label ();
gtk_box_pack_start (GTK_BOX (sidebar_title), sidebar_title->details->more_info_label, 0, 0, 0);
gtk_widget_show (sidebar_title->details->more_info_label);
sidebar_title->details->emblem_box = gtk_hbox_new (FALSE, 0);
gtk_widget_show (sidebar_title->details->emblem_box);
gtk_box_pack_start (GTK_BOX (sidebar_title), sidebar_title->details->emblem_box, 0, 0, 0);
sidebar_title->details->best_icon_size = get_best_icon_size (sidebar_title);
/* Keep track of changes in graphics trade offs */
update_all (sidebar_title);
/* initialize the label colors & fonts */
style_set (GTK_WIDGET (sidebar_title), NULL);
eel_preferences_add_callback_while_alive (
NAUTILUS_PREFERENCES_SHOW_DIRECTORY_ITEM_COUNTS,
(EelPreferencesCallback) update_more_info,
sidebar_title, G_OBJECT (sidebar_title));
}
/* destroy by throwing away private storage */
static void
release_file (NautilusSidebarTitle *sidebar_title)
{
if (sidebar_title->details->file_changed_connection != 0) {
g_signal_handler_disconnect (sidebar_title->details->file,
sidebar_title->details->file_changed_connection);
sidebar_title->details->file_changed_connection = 0;
}
if (sidebar_title->details->file != NULL) {
nautilus_file_monitor_remove (sidebar_title->details->file, sidebar_title);
nautilus_file_unref (sidebar_title->details->file);
sidebar_title->details->file = NULL;
}
}
static void
nautilus_sidebar_title_destroy (GtkObject *object)
{
NautilusSidebarTitle *sidebar_title;
sidebar_title = NAUTILUS_SIDEBAR_TITLE (object);
if (sidebar_title->details) {
release_file (sidebar_title);
g_free (sidebar_title->details->title_text);
g_free (sidebar_title->details);
sidebar_title->details = NULL;
}
EEL_CALL_PARENT (GTK_OBJECT_CLASS, destroy, (object));
}
/* return a new index title object */
GtkWidget *
nautilus_sidebar_title_new (void)
{
return gtk_widget_new (nautilus_sidebar_title_get_type (), NULL);
}
void
nautilus_sidebar_title_select_text_color (NautilusSidebarTitle *sidebar_title,
EelBackground *background,
gboolean is_default)
{
char *sidebar_title_color;
char *sidebar_info_title_color;
char *sidebar_title_shadow_color;
g_return_if_fail (background != NULL);
/* if the background is set to the default, the theme can explicitly
* define the title colors. Check if the background has been customized
* and if the theme specified any colors
*/
sidebar_title_color = NULL;
sidebar_info_title_color = NULL;
sidebar_title_shadow_color = NULL;
/* FIXME bugzilla.gnome.org 42496: for now, both the title and info
* colors are the same - and hard coded */
if (eel_background_is_dark (background)) {
sidebar_title_color = g_strdup ("#FFFFFF");
sidebar_info_title_color = g_strdup ("#FFFFFF");
sidebar_title_shadow_color = g_strdup ("#000000");
} else {
sidebar_title_color = g_strdup ("#000000");
sidebar_info_title_color = g_strdup ("#000000");
sidebar_title_shadow_color = g_strdup ("#FFFFFF");
}
eel_gtk_widget_set_foreground_color (sidebar_title->details->title_label,
sidebar_title_color);
eel_gtk_widget_set_foreground_color (sidebar_title->details->more_info_label,
sidebar_info_title_color);
eel_gtk_label_set_drop_shadow_color (GTK_LABEL (sidebar_title->details->title_label),
eel_parse_rgb_with_white_default (sidebar_title_shadow_color));
eel_gtk_label_set_drop_shadow_color (GTK_LABEL (sidebar_title->details->more_info_label),
eel_parse_rgb_with_white_default (sidebar_title_shadow_color));
eel_gtk_label_set_drop_shadow_offset (GTK_LABEL (sidebar_title->details->title_label),
SHADOW_OFFSET);
eel_gtk_label_set_drop_shadow_offset (GTK_LABEL (sidebar_title->details->more_info_label),
SHADOW_OFFSET);
g_free (sidebar_title_color);
g_free (sidebar_info_title_color);
g_free (sidebar_title_shadow_color);
}
static char*
get_property_from_component (NautilusSidebarTitle *sidebar_title, const char *property)
{
/* There used to be a way to get icon and summary_text from main view,
* but its not used right now, so this sas stubbed out for now
*/
return NULL;
}
static guint
get_best_icon_size (NautilusSidebarTitle *sidebar_title)
{
gint width;
width = GTK_WIDGET (sidebar_title)->allocation.width - TITLE_PADDING;
if (width < 0) {
/* use smallest available icon size */
return nautilus_icon_get_smaller_icon_size (0);
} else {
return nautilus_icon_get_smaller_icon_size ((guint) width);
}
}
/* set up the icon image */
static void
update_icon (NautilusSidebarTitle *sidebar_title)
{
GdkPixbuf *pixbuf;
NautilusIconInfo *info;
char *icon_name;
gboolean leave_pixbuf_unchanged;
leave_pixbuf_unchanged = FALSE;
/* see if the current content view is specifying an icon */
icon_name = get_property_from_component (sidebar_title, "icon_name");
pixbuf = NULL;
if (icon_name != NULL && icon_name[0] != '\0') {
info = nautilus_icon_info_lookup_from_name (icon_name, NAUTILUS_ICON_SIZE_LARGE);
pixbuf = nautilus_icon_info_get_pixbuf_at_size (info, NAUTILUS_ICON_SIZE_LARGE);
g_object_unref (info);
} else if (sidebar_title->details->file != NULL &&
nautilus_file_check_if_ready (sidebar_title->details->file,
NAUTILUS_FILE_ATTRIBUTES_FOR_ICON)) {
pixbuf = nautilus_file_get_icon_pixbuf (sidebar_title->details->file,
sidebar_title->details->best_icon_size,
FALSE,
NAUTILUS_FILE_ICON_FLAGS_FOR_DRAG_ACCEPT);
} else if (sidebar_title->details->determined_icon) {
/* We used to know the icon for this file, but now the file says it isn't
* ready. This means that some file info has been invalidated, which
* doesn't necessarily mean that the previously-determined icon is
* wrong (in fact, in practice it usually doesn't mean that). Keep showing
* the one we last determined for now.
*/
leave_pixbuf_unchanged = TRUE;
}
g_free (icon_name);
if (!leave_pixbuf_unchanged) {
gtk_image_set_from_pixbuf (GTK_IMAGE (sidebar_title->details->icon), pixbuf);
}
if (pixbuf != NULL) {
sidebar_title->details->determined_icon = TRUE;
g_object_unref (pixbuf);
}
}
static void
update_title_font (NautilusSidebarTitle *sidebar_title)
{
int available_width;
PangoFontDescription *title_font;
int largest_fitting_font_size;
int max_style_font_size;
GtkStyle *style;
/* Make sure theres work to do */
if (eel_strlen (sidebar_title->details->title_text) < 1) {
return;
}
available_width = GTK_WIDGET (sidebar_title)->allocation.width - TITLE_PADDING;
/* No work to do */
if (available_width <= 0) {
return;
}
style = gtk_widget_get_style (GTK_WIDGET (sidebar_title));
title_font = pango_font_description_copy (style->font_desc);
max_style_font_size = pango_font_description_get_size (title_font) * 1.8 / PANGO_SCALE;
if (max_style_font_size < MIN_TITLE_FONT_SIZE + 1) {
max_style_font_size = MIN_TITLE_FONT_SIZE + 1;
}
largest_fitting_font_size = eel_pango_font_description_get_largest_fitting_font_size (
title_font,
gtk_widget_get_pango_context (sidebar_title->details->title_label),
sidebar_title->details->title_text,
available_width,
MIN_TITLE_FONT_SIZE,
max_style_font_size);
pango_font_description_set_size (title_font, largest_fitting_font_size * PANGO_SCALE);
pango_font_description_set_weight (title_font, PANGO_WEIGHT_BOLD);
gtk_widget_modify_font (sidebar_title->details->title_label,
title_font);
pango_font_description_free (title_font);
}
static void
update_title (NautilusSidebarTitle *sidebar_title)
{
GtkLabel *label;
const char *text;
label = GTK_LABEL (sidebar_title->details->title_label);
text = sidebar_title->details->title_text;
if (eel_strcmp (text, gtk_label_get_text (label)) == 0) {
return;
}
gtk_label_set_text (label, text);
update_title_font (sidebar_title);
}
static void
append_and_eat (GString *string, const char *separator, char *new_string)
{
if (new_string == NULL) {
return;
}
if (separator != NULL) {
g_string_append (string, separator);
}
g_string_append (string, new_string);
g_free (new_string);
}
static int
measure_width_callback (const char *string, gpointer callback_data)
{
PangoLayout *layout;
int width;
layout = PANGO_LAYOUT (callback_data);
pango_layout_set_text (layout, string, -1);
pango_layout_get_pixel_size (layout, &width, NULL);
return width;
}
static void
update_more_info (NautilusSidebarTitle *sidebar_title)
{
NautilusFile *file;
GString *info_string;
char *type_string, *component_info;
char *date_modified_str;
int sidebar_width;
PangoLayout *layout;
file = sidebar_title->details->file;
/* allow components to specify the info if they wish to */
component_info = get_property_from_component (sidebar_title, "summary_info");
if (component_info != NULL && strlen (component_info) > 0) {
info_string = g_string_new (component_info);
g_free (component_info);
} else {
info_string = g_string_new (NULL);
type_string = NULL;
if (file != NULL && nautilus_file_should_show_type (file)) {
type_string = nautilus_file_get_string_attribute (file, "type");
}
if (type_string != NULL) {
append_and_eat (info_string, NULL, type_string);
append_and_eat (info_string, ", ",
nautilus_file_get_string_attribute (file, "size"));
} else {
append_and_eat (info_string, NULL,
nautilus_file_get_string_attribute (file, "size"));
}
sidebar_width = GTK_WIDGET (sidebar_title)->allocation.width - 2 * SIDEBAR_INFO_MARGIN;
if (sidebar_width > MINIMUM_INFO_WIDTH) {
layout = pango_layout_copy (gtk_label_get_layout (GTK_LABEL (sidebar_title->details->more_info_label)));
pango_layout_set_width (layout, -1);
date_modified_str = nautilus_file_fit_modified_date_as_string
(file, sidebar_width, measure_width_callback, NULL, layout);
g_object_unref (layout);
append_and_eat (info_string, "\n", date_modified_str);
}
}
gtk_label_set_text (GTK_LABEL (sidebar_title->details->more_info_label),
info_string->str);
g_string_free (info_string, TRUE);
}
/* add a pixbuf to the emblem box */
static void
add_emblem (NautilusSidebarTitle *sidebar_title, GdkPixbuf *pixbuf)
{
GtkWidget *image_widget;
image_widget = gtk_image_new_from_pixbuf (pixbuf);
gtk_widget_show (image_widget);
gtk_container_add (GTK_CONTAINER (sidebar_title->details->emblem_box), image_widget);
}
static void
update_emblems (NautilusSidebarTitle *sidebar_title)
{
GList *pixbufs, *p;
GdkPixbuf *pixbuf;
/* exit if we don't have the file yet */
if (sidebar_title->details->file == NULL) {
return;
}
/* First, deallocate any existing ones */
gtk_container_foreach (GTK_CONTAINER (sidebar_title->details->emblem_box),
(GtkCallback) gtk_widget_destroy,
NULL);
/* fetch the emblem icons from metadata */
pixbufs = nautilus_file_get_emblem_pixbufs (sidebar_title->details->file,
nautilus_icon_get_emblem_size_for_icon_size (NAUTILUS_ICON_SIZE_STANDARD),
FALSE,
NULL);
/* loop through the list of emblems, installing them in the box */
for (p = pixbufs; p != NULL; p = p->next) {
pixbuf = p->data;
add_emblem (sidebar_title, pixbuf);
g_object_unref (pixbuf);
}
g_list_free (pixbufs);
}
/* return the filename text */
char *
nautilus_sidebar_title_get_text (NautilusSidebarTitle *sidebar_title)
{
return g_strdup (sidebar_title->details->title_text);
}
/* set up the filename text */
void
nautilus_sidebar_title_set_text (NautilusSidebarTitle *sidebar_title,
const char* new_text)
{
g_free (sidebar_title->details->title_text);
/* truncate the title to a reasonable size */
if (new_text && strlen (new_text) > MAX_TITLE_SIZE) {
sidebar_title->details->title_text = g_strndup (new_text, MAX_TITLE_SIZE);
} else {
sidebar_title->details->title_text = g_strdup (new_text);
}
/* Recompute the displayed text. */
update_title (sidebar_title);
}
static gboolean
item_count_ready (NautilusSidebarTitle *sidebar_title)
{
return sidebar_title->details->file != NULL
&& nautilus_file_get_directory_item_count
(sidebar_title->details->file, NULL, NULL) != 0;
}
static void
monitor_add (NautilusSidebarTitle *sidebar_title)
{
NautilusFileAttributes attributes;
/* Monitor the things needed to get the right icon. Don't
* monitor a directory's item count at first even though the
* "size" attribute is based on that, because the main view
* will get it for us in most cases, and in other cases it's
* OK to not show the size -- if we did monitor it, we'd be in
* a race with the main view and could cause it to have to
* load twice. Once we have a size, though, we want to monitor
* the size to guarantee it stays up to date.
*/
sidebar_title->details->monitoring_count = item_count_ready (sidebar_title);
attributes = NAUTILUS_FILE_ATTRIBUTES_FOR_ICON | NAUTILUS_FILE_ATTRIBUTE_METADATA;
if (sidebar_title->details->monitoring_count) {
attributes |= NAUTILUS_FILE_ATTRIBUTE_DIRECTORY_ITEM_COUNT;
}
nautilus_file_monitor_add (sidebar_title->details->file, sidebar_title, attributes);
}
static void
update_all (NautilusSidebarTitle *sidebar_title)
{
update_icon (sidebar_title);
update_title (sidebar_title);
update_more_info (sidebar_title);
update_emblems (sidebar_title);
/* Redo monitor once the count is ready. */
if (!sidebar_title->details->monitoring_count && item_count_ready (sidebar_title)) {
nautilus_file_monitor_remove (sidebar_title->details->file, sidebar_title);
monitor_add (sidebar_title);
}
}
void
nautilus_sidebar_title_set_file (NautilusSidebarTitle *sidebar_title,
NautilusFile *file,
const char *initial_text)
{
if (file != sidebar_title->details->file) {
release_file (sidebar_title);
sidebar_title->details->file = file;
sidebar_title->details->determined_icon = FALSE;
nautilus_file_ref (sidebar_title->details->file);
/* attach file */
if (file != NULL) {
sidebar_title->details->file_changed_connection =
g_signal_connect_object
(sidebar_title->details->file, "changed",
G_CALLBACK (update_all), sidebar_title, G_CONNECT_SWAPPED);
monitor_add (sidebar_title);
}
}
g_free (sidebar_title->details->title_text);
sidebar_title->details->title_text = g_strdup (initial_text);
update_all (sidebar_title);
}
static void
nautilus_sidebar_title_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
NautilusSidebarTitle *sidebar_title;
guint16 old_width;
guint best_icon_size;
sidebar_title = NAUTILUS_SIDEBAR_TITLE (widget);
old_width = widget->allocation.width;
EEL_CALL_PARENT (GTK_WIDGET_CLASS, size_allocate, (widget, allocation));
if (old_width != widget->allocation.width) {
best_icon_size = get_best_icon_size (sidebar_title);
if (best_icon_size != sidebar_title->details->best_icon_size) {
sidebar_title->details->best_icon_size = best_icon_size;
update_icon (sidebar_title);
}
/* update the title font and info format as the size changes. */
update_title_font (sidebar_title);
update_more_info (sidebar_title);
}
}
gboolean
nautilus_sidebar_title_hit_test_icon (NautilusSidebarTitle *sidebar_title, int x, int y)
{
g_return_val_if_fail (NAUTILUS_IS_SIDEBAR_TITLE (sidebar_title), FALSE);
return eel_point_in_widget (sidebar_title->details->icon, x, y);
}
static GtkWidget *
sidebar_title_create_title_label (void)
{
GtkWidget *title_label;
title_label = gtk_label_new ("");
eel_gtk_label_make_bold (GTK_LABEL (title_label));
gtk_label_set_line_wrap (GTK_LABEL (title_label), TRUE);
gtk_label_set_justify (GTK_LABEL (title_label), GTK_JUSTIFY_CENTER);
gtk_label_set_selectable (GTK_LABEL (title_label), TRUE);
gtk_label_set_ellipsize (GTK_LABEL (title_label), PANGO_ELLIPSIZE_END);
return title_label;
}
static GtkWidget *
sidebar_title_create_more_info_label (void)
{
GtkWidget *more_info_label;
more_info_label = gtk_label_new ("");
eel_gtk_label_set_scale (GTK_LABEL (more_info_label), PANGO_SCALE_SMALL);
gtk_label_set_justify (GTK_LABEL (more_info_label), GTK_JUSTIFY_CENTER);
gtk_label_set_selectable (GTK_LABEL (more_info_label), TRUE);
gtk_label_set_ellipsize (GTK_LABEL (more_info_label), PANGO_ELLIPSIZE_END);
return more_info_label;
}
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