cache_maint.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

};

typedef struct _CleanData CleanData;
struct _CleanData
{
	GenericDialog *gd;
	ThumbLoaderStd *tl;

	GList *list;
	GList *list_dir;

	gint days;
	gint clear;

	GtkWidget *button_close;
	GtkWidget *button_stop;
	GtkWidget *button_start;
	GtkWidget *progress;
	GtkWidget *spinner;

	GtkWidget *group;
	GtkWidget *entry;

	gint count_total;
	gint count_done;

	gint local;
	gint recurse;

	gint idle_id;
};

static void cache_manager_render_reset(CleanData *cd)
{
	path_list_free(cd->list);
	cd->list = NULL;

	path_list_free(cd->list_dir);
	cd->list_dir = NULL;

	thumb_loader_free((ThumbLoader *)cd->tl);
	cd->tl = NULL;
}

static void cache_manager_render_close_cb(GenericDialog *fd, gpointer data)
{
	CleanData *cd = data;

	if (!GTK_WIDGET_SENSITIVE(cd->button_close)) return;

	cache_manager_render_reset(cd);
	generic_dialog_close(cd->gd);
	g_free(cd);
}

static void cache_manager_render_finish(CleanData *cd)
{
	cache_manager_render_reset(cd);

	gtk_entry_set_text(GTK_ENTRY(cd->progress), _("done"));
	spinner_set_interval(cd->spinner, -1);

	gtk_widget_set_sensitive(cd->group, TRUE);
	gtk_widget_set_sensitive(cd->button_start, TRUE);
	gtk_widget_set_sensitive(cd->button_stop, FALSE);
	gtk_widget_set_sensitive(cd->button_close, TRUE);
}

static void cache_manager_render_stop_cb(GenericDialog *fd, gpointer data)
{
	CleanData *cd = data;

	cache_manager_render_finish(cd);
}

static void cache_manager_render_folder(CleanData *cd, const gchar *path)
{
	GList *list_d = NULL;
	GList *list_f = NULL;

	if (cd->recurse)
		{
		path_list(path, &list_f, &list_d);
		}
	else
		{
		path_list(path, &list_f, NULL);
		}

	list_f = path_list_filter(list_f, FALSE);
	list_d = path_list_filter(list_d, TRUE);

	cd->list = g_list_concat(list_f, cd->list);
	cd->list_dir = g_list_concat(list_d, cd->list_dir);
}

static gint cache_manager_render_file(CleanData *cd);

static void cache_manager_render_thumb_done_cb(ThumbLoader *tl, gpointer data)
{
	CleanData *cd = data;

	thumb_loader_free((ThumbLoader *)cd->tl);
	cd->tl = NULL;

	while (cache_manager_render_file(cd));
}

static gint cache_manager_render_file(CleanData *cd)
{
	if (cd->list)
		{
		gchar *path;
		gint success;

		path = cd->list->data;
		cd->list = g_list_remove(cd->list, path);

		cd->tl = (ThumbLoaderStd *)thumb_loader_new(thumb_max_width, thumb_max_height);
		thumb_loader_set_callbacks((ThumbLoader *)cd->tl,
					   cache_manager_render_thumb_done_cb,
					   cache_manager_render_thumb_done_cb,
					   NULL, cd);
		thumb_loader_set_cache((ThumbLoader *)cd->tl, TRUE, cd->local, TRUE);
		success = thumb_loader_start((ThumbLoader *)cd->tl, path);
		if (success)
			{
			gtk_entry_set_text(GTK_ENTRY(cd->progress), path);
			}
		else
			{
			thumb_loader_free((ThumbLoader *)cd->tl);
			cd->tl = NULL;
			}

		g_free(path);

		return (!success);
		}
	else if (cd->list_dir)
		{
		gchar *path;

		path = cd->list_dir->data;
		cd->list_dir = g_list_remove(cd->list_dir, path);

		cache_manager_render_folder(cd, path);

		g_free(path);

		return TRUE;
		}

	cache_manager_render_finish(cd);

	return FALSE;
}

static void cache_manager_render_start_cb(GenericDialog *fd, gpointer data)
{
	CleanData *cd = data;
	gchar *path;

	if (cd->list || !GTK_WIDGET_SENSITIVE(cd->button_start)) return;

	path = remove_trailing_slash((gtk_entry_get_text(GTK_ENTRY(cd->entry))));
	parse_out_relatives(path);

	if (!isdir(path))
		{
		warning_dialog(_("Invalid folder"),
			        _("The specified folder can not be found."),
			       GTK_STOCK_DIALOG_WARNING, cd->gd->dialog);
		}
	else
		{
		gtk_widget_set_sensitive(cd->group, FALSE);
		gtk_widget_set_sensitive(cd->button_start, FALSE);
		gtk_widget_set_sensitive(cd->button_stop, TRUE);
		gtk_widget_set_sensitive(cd->button_close, FALSE);

		spinner_set_interval(cd->spinner, SPINNER_SPEED);

		cache_manager_render_folder(cd, path);
		while (cache_manager_render_file(cd));
		}

	g_free(path);
}

static void cache_manager_render_dialog(GtkWidget *widget, const gchar *path)
{
	CleanData *cd;
	GtkWidget *hbox;
	GtkWidget *label;
	GtkWidget *button;

	cd = g_new0(CleanData, 1);

	cd->gd = generic_dialog_new(_("Create thumbnails"),
				    "GQview", "create_thumbnails",
				    widget, FALSE,
				    NULL, cd);
	gtk_window_set_default_size(GTK_WINDOW(cd->gd->dialog), PURGE_DIALOG_WIDTH, -1);
	cd->gd->cancel_cb = cache_manager_render_close_cb;
	cd->button_close = generic_dialog_add_button(cd->gd, GTK_STOCK_CLOSE, NULL,
						     cache_manager_render_close_cb, FALSE);
	cd->button_start = generic_dialog_add_button(cd->gd, GTK_STOCK_OK, _("S_tart"),
						     cache_manager_render_start_cb, FALSE);
	cd->button_stop = generic_dialog_add_button(cd->gd, GTK_STOCK_STOP, NULL,
						    cache_manager_render_stop_cb, FALSE);
	gtk_widget_set_sensitive(cd->button_stop, FALSE);

	generic_dialog_add_message(cd->gd, NULL, _("Create thumbnails"), NULL);

	hbox = pref_box_new(cd->gd->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, 0);
	pref_spacer(hbox, PREF_PAD_INDENT);
	cd->group = pref_box_new(hbox, TRUE, GTK_ORIENTATION_VERTICAL, PREF_PAD_GAP);

	hbox = pref_box_new(cd->group, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_SPACE);
	pref_label_new(hbox, _("Folder:"));

	label = tab_completion_new(&cd->entry, path, NULL, NULL);
	tab_completion_add_select_button(cd->entry,_("Select folder") , TRUE);
	gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 0);
	gtk_widget_show(label);

	pref_checkbox_new_int(cd->group, _("Include subfolders"), FALSE, &cd->recurse);
	button = pref_checkbox_new_int(cd->group, _("Store thumbnails local to source images"), FALSE, &cd->local);
	gtk_widget_set_sensitive(button, thumbnail_spec_standard);

	pref_line(cd->gd->vbox, PREF_PAD_SPACE);
	hbox = pref_box_new(cd->gd->vbox, FALSE, GTK_ORIENTATION_HORIZONTAL, PREF_PAD_SPACE);

	cd->progress = gtk_entry_new();
	GTK_WIDGET_UNSET_FLAGS(cd->progress, GTK_CAN_FOCUS);
	gtk_editable_set_editable(GTK_EDITABLE(cd->progress), FALSE);
	gtk_entry_set_text(GTK_ENTRY(cd->progress), _("click start to begin"));
	gtk_box_pack_start(GTK_BOX(hbox), cd->progress, TRUE, TRUE, 0);
	gtk_widget_show(cd->progress);

	cd->spinner = spinner_new(NULL, -1);
	gtk_box_pack_start(GTK_BOX(hbox), cd->spinner, FALSE, FALSE, 0);
	gtk_widget_show(cd->spinner);

	cd->list = NULL;

	gtk_widget_show(cd->gd->dialog);
}




static void cache_manager_standard_clean_close_cb(GenericDialog *gd, gpointer data)
{
	CleanData *cd = data;

	if (!GTK_WIDGET_SENSITIVE(cd->button_close)) return;

	generic_dialog_close(cd->gd);

	thumb_loader_std_thumb_file_validate_cancel(cd->tl);
	path_list_free(cd->list);
	g_free(cd);
}

static void cache_manager_standard_clean_done(CleanData *cd)
{
	gtk_widget_set_sensitive(cd->button_stop, FALSE);
	gtk_widget_set_sensitive(cd->button_close, TRUE);

	gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(cd->progress), 1.0);
	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(cd->progress), _("done"));

	if (cd->idle_id != -1)
		{
		g_source_remove(cd->idle_id);
		cd->idle_id = -1;
		}

	thumb_loader_std_thumb_file_validate_cancel(cd->tl);
	cd->tl = NULL;

	path_list_free(cd->list);
	cd->list = NULL;
}

static void cache_manager_standard_clean_stop_cb(GenericDialog *gd, gpointer data)
{
	CleanData *cd = data;

	cache_manager_standard_clean_done(cd);
}

static gint cache_manager_standard_clean_clear_cb(gpointer data)
{
	CleanData *cd = data;

	if (cd->list)
		{
		gchar *next_path;

		next_path = cd->list->data;
		cd->list = g_list_remove(cd->list, next_path);

		if (debug) printf("thumb removed: %s\n", next_path);

		unlink_file(next_path);
		g_free(next_path);

		cd->count_done++;
		if (cd->count_total != 0)
			{
			gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(cd->progress),
						      (gdouble)cd->count_done / cd->count_total);
			}

		return TRUE;
		}

	cd->idle_id = -1;
	cache_manager_standard_clean_done(cd);
	return FALSE;
}

static void cache_manager_standard_clean_valid_cb(const gchar *path, gint valid, gpointer data)
{
	CleanData *cd = data;

	if (path)
		{
		if (!valid)
			{
			if (debug) printf("thumb cleaned: %s\n", path);
			unlink_file(path);
			}

		cd->count_done++;
		if (cd->count_total != 0)
			{
			gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(cd->progress),
						      (gdouble)cd->count_done / cd->count_total);
			}
		}

	cd->tl = NULL;
	if (cd->list)
		{
		gchar *next_path;

		next_path = cd->list->data;
		cd->list = g_list_remove(cd->list, next_path);
	
		cd->tl = thumb_loader_std_thumb_file_validate(next_path, cd->days,
							      cache_manager_standard_clean_valid_cb, cd);
		g_free(next_path);
		}
	else
		{
		cache_manager_standard_clean_done(cd);
		}
}

static void cache_manager_standard_clean_start_cb(GenericDialog *gd, gpointer data)
{
	CleanData *cd = data;
	GList *list;
	gchar *path;

	if (cd->list || !GTK_WIDGET_SENSITIVE(cd->button_start)) return;

	gtk_widget_set_sensitive(cd->button_start, FALSE);
	gtk_widget_set_sensitive(cd->button_stop, TRUE);
	gtk_widget_set_sensitive(cd->button_close, FALSE);

	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(cd->progress), _("running..."));

	path = g_strconcat(homedir(), "/", THUMB_FOLDER, "/", THUMB_FOLDER_NORMAL, NULL);
	list = NULL;
	path_list(path, &list, NULL);
	cd->list = list;
	g_free(path);

	path = g_strconcat(homedir(), "/", THUMB_FOLDER, "/", THUMB_FOLDER_LARGE, NULL);
	list = NULL;
	path_list(path, &list, NULL);
	cd->list = g_list_concat(cd->list, list);
	g_free(path);

	path = g_strconcat(homedir(), "/", THUMB_FOLDER, "/", THUMB_FOLDER_FAIL, NULL);
	list = NULL;
	path_list(path, &list, NULL);
	cd->list = g_list_concat(cd->list, list);
	g_free(path);

	cd->count_total = g_list_length(cd->list);
	cd->count_done = 0;

	/* start iterating */
	if (cd->clear)
		{
		cd->idle_id = g_idle_add(cache_manager_standard_clean_clear_cb, cd);
		}
	else
		{
		cache_manager_standard_clean_valid_cb(NULL, TRUE, cd);
		}
}

static void cache_manager_standard_process(GtkWidget *widget, gint clear)
{
	CleanData *cd;
	const gchar *stock_id;
	const gchar *msg;

	cd = g_new0(CleanData, 1);
	cd->clear = clear;

	if (clear)
		{
		stock_id = GTK_STOCK_DELETE;
		msg = _("Clearing thumbnails...");
		}
	else
		{
		stock_id = GTK_STOCK_CLEAR;
		msg = _("Removing old thumbnails...");
		}

	cd->gd = generic_dialog_new(_("Maintenance"),
				    "GQview", "standard_maintenance",
				    widget, FALSE,
				    NULL, cd);
	cd->gd->cancel_cb = cache_manager_standard_clean_close_cb;
	cd->button_close = generic_dialog_add_button(cd->gd, GTK_STOCK_CLOSE, NULL,
						     cache_manager_standard_clean_close_cb, FALSE);
	cd->button_start = generic_dialog_add_button(cd->gd, GTK_STOCK_OK, _("S_tart"),
						     cache_manager_standard_clean_start_cb, FALSE);
	cd->button_stop = generic_dialog_add_button(cd->gd, GTK_STOCK_STOP, NULL,
						    cache_manager_standard_clean_stop_cb, FALSE);
	gtk_widget_set_sensitive(cd->button_stop, FALSE);

	generic_dialog_add_message(cd->gd, stock_id, msg, NULL);

	cd->progress = gtk_progress_bar_new();
	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(cd->progress), _("click start to begin"));
	gtk_box_pack_start(GTK_BOX(cd->gd->vbox), cd->progress, FALSE, FALSE, 0);
	gtk_widget_show(cd->progress);

	cd->days = 30;
	cd->tl = NULL;
	cd->idle_id = -1;

	gtk_widget_show(cd->gd->dialog);
}

static void cache_manager_standard_clean_cb(GtkWidget *widget, gpointer data)
{
	cache_manager_standard_process(widget, FALSE);
}

static void cache_manager_standard_clear_cb(GtkWidget *widget, gpointer data)
{
	cache_manager_standard_process(widget, TRUE);
}


static void cache_manager_gqview_clean_cb(GtkWidget *widget, gpointer data)
{
	cache_maintain_home(FALSE, FALSE, widget);
}


static void dummy_cancel_cb(GenericDialog *gd, gpointer data)
{
	/* no op, only so cancel button appears */
}

static void cache_manager_gqview_clear_ok_cb(GenericDialog *gd, gpointer data)
{
	cache_maintain_home(FALSE, TRUE, NULL);
}

void cache_manager_gqview_clear_confirm(GtkWidget *parent)
{
	GenericDialog *gd;

	gd = generic_dialog_new(_("Clear cache"),
				"GQview", "clear_cache", parent, TRUE,
				dummy_cancel_cb, NULL);
	generic_dialog_add_message(gd, GTK_STOCK_DIALOG_QUESTION, _("Clear cache"),
				   _("This will remove all thumbnails that have\nbeen saved to disk, continue?"));
	generic_dialog_add_button(gd, GTK_STOCK_OK, NULL, cache_manager_gqview_clear_ok_cb, TRUE);

	gtk_widget_show(gd->dialog);
}

static void cache_manager_gqview_clear_cb(GtkWidget *widget, gpointer data)
{
	cache_manager_gqview_clear_confirm(widget);
}

static void cache_manager_render_cb(GtkWidget *widget, gpointer data)
{
	cache_manager_render_dialog(widget, homedir());
}

static void cache_manager_metadata_clean_cb(GtkWidget *widget, gpointer data)
{
	cache_maintain_home(TRUE, FALSE, widget);
}


static CacheManager *cache_manager = NULL;

static void cache_manager_close_cb(GenericDialog *gd, gpointer data)
{
	generic_dialog_close(gd);

	g_free(cache_manager);
	cache_manager = NULL;
}

void cache_manager_show(void)
{
	GenericDialog *gd;
	GtkWidget *group;
	GtkWidget *button;
	GtkWidget *label;
	GtkWidget *table;
	GtkSizeGroup *sizegroup;
	gchar *buf;

	if (cache_manager)
		{
		gtk_window_present(GTK_WINDOW(cache_manager->dialog->dialog));
		return;
		}

	cache_manager = g_new0(CacheManager, 1);

	cache_manager->dialog = generic_dialog_new(_("Cache Maintenance - GQview"),
						   "GQiew", "cache_manager",
						   NULL, FALSE,
						   NULL, cache_manager);
	gd = cache_manager->dialog;

	gd->cancel_cb = cache_manager_close_cb;
	generic_dialog_add_button(gd, GTK_STOCK_CLOSE, NULL,
				  cache_manager_close_cb, FALSE);

	generic_dialog_add_message(gd, NULL, _("Cache and Data Maintenance"), NULL);

	sizegroup = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);

	group = pref_group_new(gd->vbox, FALSE, _("GQview thumbnail cache"), GTK_ORIENTATION_VERTICAL);

	buf = g_strconcat(_("Location:"), " ", homedir(), "/", GQVIEW_CACHE_RC_THUMB, NULL);
	label = pref_label_new(group, buf);
	gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
	g_free(buf);

	table = pref_table_new(group, 2, 2, FALSE, FALSE);

	button = pref_table_button(table, 0, 0, GTK_STOCK_CLEAR, _("Clean up"), FALSE,
				   G_CALLBACK(cache_manager_gqview_clean_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 0, _("Remove orphaned or outdated thumbnails."), 0.0);

	button = pref_table_button(table, 0, 1, GTK_STOCK_DELETE, _("Clear cache"), FALSE,
				   G_CALLBACK(cache_manager_gqview_clear_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 1, _("Delete all cached thumbnails."), 0.0);


	group = pref_group_new(gd->vbox, FALSE, _("Shared thumbnail cache"), GTK_ORIENTATION_VERTICAL);

	buf = g_strconcat(_("Location:"), " ", homedir(), "/", THUMB_FOLDER, NULL);
	label = pref_label_new(group, buf);
	gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
	g_free(buf);

	table = pref_table_new(group, 2, 2, FALSE, FALSE);

	button = pref_table_button(table, 0, 0, GTK_STOCK_CLEAR, _("Clean up"), FALSE,
				   G_CALLBACK(cache_manager_standard_clean_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 0, _("Remove orphaned or outdated thumbnails."), 0.0);

	button = pref_table_button(table, 0, 1, GTK_STOCK_DELETE, _("Clear cache"), FALSE,
				   G_CALLBACK(cache_manager_standard_clear_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 1, _("Delete all cached thumbnails."), 0.0);

	group = pref_group_new(gd->vbox, FALSE, _("Create thumbnails"), GTK_ORIENTATION_VERTICAL);

	table = pref_table_new(group, 2, 1, FALSE, FALSE);

	button = pref_table_button(table, 0, 1, GTK_STOCK_EXECUTE, _("Render"), FALSE,
				   G_CALLBACK(cache_manager_render_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 1, _("Render thumbnails for a specific folder."), 0.0);

	group = pref_group_new(gd->vbox, FALSE, _("Metadata"), GTK_ORIENTATION_VERTICAL);
	
	buf = g_strconcat(_("Location:"), " ", homedir(), "/", GQVIEW_CACHE_RC_METADATA, NULL);
	label = pref_label_new(group, buf);
	gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
	g_free(buf);

	table = pref_table_new(group, 2, 1, FALSE, FALSE);

	button = pref_table_button(table, 0, 0, GTK_STOCK_CLEAR, _("Clean up"), FALSE,
				   G_CALLBACK(cache_manager_metadata_clean_cb), cache_manager);
	gtk_size_group_add_widget(sizegroup, button);
	pref_table_label(table, 1, 0, _("Remove orphaned keywords and comments."), 0.0);

	gtk_widget_show(cache_manager->dialog->dialog);
}