ui_pathsel.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。

	if (buf && (!dd->path || strcmp(buf, dd->path) != 0))
		{
		gchar *tmp = remove_trailing_slash(path);
		if (isdir(tmp))
			{
			dest_populate(dd, tmp);
			}
		else if (isdir(buf))
			{
			dest_populate(dd, buf);
			}
		g_free(tmp);
		}
	g_free(buf);
}

static void dest_filter_list_sync(Dest_Data *dd)
{
	GtkWidget *entry;
	GtkListStore *store;
	gchar *old_text;
	GList *fwork;
	GList *twork;

	if (!dd->filter_list || !dd->filter_combo) return;

	entry = GTK_BIN(dd->filter_combo)->child;
	old_text = g_strdup(gtk_entry_get_text(GTK_ENTRY(entry)));

	store = GTK_LIST_STORE(gtk_combo_box_get_model(GTK_COMBO_BOX(dd->filter_combo)));
	gtk_list_store_clear(store);

	fwork = dd->filter_list;
	twork = dd->filter_text_list;
	while (fwork && twork)
		{
		GtkTreeIter iter;
		gchar *name;
		gchar *filter;

		name = twork->data;
		filter = fwork->data;

		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter, FILTER_COLUMN_NAME, name,
						 FILTER_COLUMN_FILTER, filter, -1);

		if (strcmp(old_text, filter) == 0)
			{
			gtk_combo_box_set_active_iter(GTK_COMBO_BOX(dd->filter_combo), &iter);
			}

		fwork = fwork->next;
		twork = twork->next;
		}

	g_free(old_text);
}

static void dest_filter_add(Dest_Data *dd, const gchar *filter, const gchar *description, gint set)
{
	GList *work;
	gchar *buf;
	gint c = 0;

	if (!filter) return;

	work = dd->filter_list;
	while (work)
		{
		gchar *f = work->data;

		if (strcmp(f, filter) == 0)
			{
			if (set) gtk_combo_box_set_active(GTK_COMBO_BOX(dd->filter_combo), c);
			return;
			}
		work = work->next;
		c++;
		}

	dd->filter_list = uig_list_insert_link(dd->filter_list, g_list_last(dd->filter_list), g_strdup(filter));

	if (description)
		{
		buf = g_strdup_printf("%s  ( %s )", description, filter);
		}
	else
		{
		buf = g_strdup_printf("( %s )", filter);
		}
	dd->filter_text_list = uig_list_insert_link(dd->filter_text_list, g_list_last(dd->filter_text_list), buf);

	if (set) gtk_entry_set_text(GTK_ENTRY(GTK_BIN(dd->filter_combo)->child), filter);
	dest_filter_list_sync(dd);
}

static void dest_filter_clear(Dest_Data *dd)
{
	path_list_free(dd->filter_list);
	dd->filter_list = NULL;

	path_list_free(dd->filter_text_list);
	dd->filter_text_list = NULL;

	dest_filter_add(dd, "*", _("All Files"), TRUE);
}

static void dest_filter_changed_cb(GtkEditable *editable, gpointer data)
{
	Dest_Data *dd = data;
	GtkWidget *entry;
	const gchar *buf;
	gchar *path;

	entry = GTK_BIN(dd->filter_combo)->child;
	buf = gtk_entry_get_text(GTK_ENTRY(entry));

	g_free(dd->filter);
	dd->filter = NULL;
	if (strlen(buf) > 0) dd->filter = g_strdup(buf);

	path = g_strdup(dd->path);
	dest_populate(dd, path);
	g_free(path);
}

static void dest_bookmark_select_cb(const gchar *path, gpointer data)
{
	Dest_Data *dd = data;

	if (isdir(path))
		{
		dest_change_dir(dd, path, (dd->f_view != NULL));
		}
	else if (isfile(path) && dd->f_view)
		{
		gtk_entry_set_text(GTK_ENTRY(dd->entry), path);
		}	
}

/*
 *-----------------------------------------------------------------------------
 * destination widget setup routines (public)
 *-----------------------------------------------------------------------------
 */ 

GtkWidget *path_selection_new_with_files(GtkWidget *entry, const gchar *path,
					 const gchar *filter, const gchar *filter_desc)
{
	GtkWidget *hbox2;
	Dest_Data *dd;
	GtkWidget *scrolled;
	GtkWidget *table;
	GtkWidget *paned;
	GtkListStore *store;
	GtkTreeSelection *selection;
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;

	dd = g_new0(Dest_Data, 1);
	dd->show_hidden = FALSE;
	dd->select_func = NULL;
	dd->select_data = NULL;
	dd->gd = NULL;

	table = gtk_table_new(4, (filter != NULL) ? 3 : 1, FALSE);
	gtk_table_set_col_spacings(GTK_TABLE(table), PREF_PAD_GAP);
	gtk_table_set_row_spacing(GTK_TABLE(table), 0, PREF_PAD_GAP);
	gtk_widget_show(table);

	dd->entry = entry;
	g_object_set_data(G_OBJECT(dd->entry), "destination_data", dd);

	hbox2 = pref_table_box(table, 0, 0, GTK_ORIENTATION_HORIZONTAL, NULL);
	gtk_box_set_spacing(GTK_BOX(hbox2), PREF_PAD_BUTTON_GAP);
	pref_button_new(hbox2, NULL, _("Home"), FALSE,
			G_CALLBACK(dest_home_cb), dd);
	pref_button_new(hbox2, NULL, _("New folder"), FALSE,
			G_CALLBACK(dest_new_dir_cb), dd);

	dd->hidden_button = gtk_check_button_new_with_label(_("Show hidden"));
	g_signal_connect(G_OBJECT(dd->hidden_button), "clicked",
			 G_CALLBACK(dest_show_hidden_cb), dd);
	gtk_box_pack_end(GTK_BOX(hbox2), dd->hidden_button, FALSE, FALSE, 0);
	gtk_widget_show(dd->hidden_button);

	hbox2 = gtk_hbox_new(FALSE, PREF_PAD_GAP);
	if (filter)
		{
		paned = gtk_hpaned_new();
		gtk_table_attach(GTK_TABLE(table), paned, 0, 3, 1, 2,
				 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
		gtk_widget_show(paned);
		gtk_paned_add1(GTK_PANED(paned), hbox2);
		}
	else
		{
		paned = NULL;
		gtk_table_attach(GTK_TABLE(table), hbox2, 0, 1, 1, 2,
				 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
		}
	gtk_widget_show(hbox2);

	/* bookmarks */
	scrolled = bookmark_list_new(NULL, dest_bookmark_select_cb, dd);
	gtk_box_pack_start(GTK_BOX(hbox2), scrolled, FALSE, FALSE, 0);
	gtk_widget_show(scrolled);

	dd->bookmark_list = scrolled;

	scrolled = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled), GTK_SHADOW_IN);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled),
					GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
	gtk_box_pack_start(GTK_BOX(hbox2), scrolled, TRUE, TRUE, 0);
	gtk_widget_show(scrolled);

	store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_STRING);
	dd->d_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
	g_object_unref(store);

	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(dd->d_view), PATH_SEL_USE_HEADINGS);

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dd->d_view));
	gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_SINGLE);

	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(column, _("Folders"));
	gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_column_pack_start(column, renderer, TRUE);
	gtk_tree_view_column_add_attribute(column, renderer, "text", 0);

	gtk_tree_view_append_column(GTK_TREE_VIEW(dd->d_view), column);

#if 0
	/* only for debugging */
	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(column, _("Path"));
	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_column_pack_start(column, renderer, TRUE);
	gtk_tree_view_column_add_attribute(column, renderer, "text", 1);
	gtk_tree_view_append_column(GTK_TREE_VIEW(dd->d_view), column);
#endif

	gtk_widget_set_size_request(dd->d_view, DEST_WIDTH, DEST_HEIGHT);
	gtk_container_add(GTK_CONTAINER(scrolled), dd->d_view);
	gtk_widget_show(dd->d_view);

	g_signal_connect(G_OBJECT(dd->d_view), "button_press_event",
			 G_CALLBACK(dest_press_cb), dd);
	g_signal_connect(G_OBJECT(dd->d_view), "key_press_event",
			 G_CALLBACK(dest_keypress_cb), dd);
	g_signal_connect(G_OBJECT(dd->d_view), "row_activated",
			 G_CALLBACK(dest_activate_cb), dd);
	g_signal_connect(G_OBJECT(dd->d_view), "destroy",
			 G_CALLBACK(dest_free_data), dd);
	
	if (filter)
		{
		GtkListStore *store;

		hbox2 = pref_table_box(table, 2, 0, GTK_ORIENTATION_HORIZONTAL, NULL);
		pref_label_new(hbox2, _("Filter:"));

		store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_STRING);

		dd->filter_combo = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(store),
								      FILTER_COLUMN_FILTER);
		g_object_unref(store);
		gtk_cell_layout_clear(GTK_CELL_LAYOUT(dd->filter_combo));
		renderer = gtk_cell_renderer_text_new();
		gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(dd->filter_combo), renderer, TRUE);
		gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(dd->filter_combo), renderer,
					       "text", FILTER_COLUMN_NAME, NULL);
#if 0
		gtk_combo_set_case_sensitive(GTK_COMBO(dd->filter_combo), TRUE);
#endif
		gtk_box_pack_start(GTK_BOX(hbox2), dd->filter_combo, TRUE, TRUE, 0);
		gtk_widget_show(dd->filter_combo);

		scrolled = gtk_scrolled_window_new(NULL, NULL);
		gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled), GTK_SHADOW_IN);
		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled),
					GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
		if (paned)
			{
			gtk_paned_add2(GTK_PANED(paned), scrolled);
			}
		else
			{
			gtk_table_attach(GTK_TABLE(table), scrolled, 2, 3, 1, 2,
				 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
			}
		gtk_widget_show(scrolled);

		store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_STRING);
		dd->f_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
		g_object_unref(store);

		gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(dd->f_view), PATH_SEL_USE_HEADINGS);

		selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dd->f_view));
		gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_SINGLE);

		column = gtk_tree_view_column_new();
		gtk_tree_view_column_set_title(column, _("Files"));
		gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);

		renderer = gtk_cell_renderer_text_new();
		gtk_tree_view_column_pack_start(column, renderer, TRUE);
		gtk_tree_view_column_add_attribute(column, renderer, "text", 0);

		gtk_tree_view_append_column(GTK_TREE_VIEW(dd->f_view), column);

		gtk_widget_set_size_request(dd->f_view, DEST_WIDTH, DEST_HEIGHT);
		gtk_container_add(GTK_CONTAINER(scrolled), dd->f_view);
		gtk_widget_show(dd->f_view);

		g_signal_connect(G_OBJECT(dd->f_view), "button_press_event",
				 G_CALLBACK(dest_press_cb), dd);
		g_signal_connect(G_OBJECT(dd->f_view), "key_press_event",
				 G_CALLBACK(dest_keypress_cb), dd);
		g_signal_connect(G_OBJECT(dd->f_view), "row_activated",
				 G_CALLBACK(dest_activate_cb), dd);
		g_signal_connect(selection, "changed",
				 G_CALLBACK(dest_select_cb), dd);

		dest_filter_clear(dd);
		dest_filter_add(dd, filter, filter_desc, TRUE);

		dd->filter = g_strdup(gtk_entry_get_text(GTK_ENTRY(GTK_BIN(dd->filter_combo)->child)));
		}

	if (path && path[0] == '/' && isdir(path))
		{
		dest_populate(dd, path);
		}
	else
		{
		gchar *buf = remove_level_from_path(path);
		if (buf && buf[0] == '/' && isdir(buf))
			{
			dest_populate(dd, buf);
			}
		else
			{
			gint pos = -1;

			dest_populate(dd, (gchar *)homedir());
			if (path) gtk_editable_insert_text(GTK_EDITABLE(dd->entry), "/", -1, &pos);
			if (path) gtk_editable_insert_text(GTK_EDITABLE(dd->entry), path, -1, &pos);
			}
		g_free(buf);
		}

	if (dd->filter_combo)
		{
		g_signal_connect(G_OBJECT(GTK_BIN(dd->filter_combo)->child), "changed",
				 G_CALLBACK(dest_filter_changed_cb), dd);
		}
	g_signal_connect(G_OBJECT(dd->entry), "changed",
			 G_CALLBACK(dest_entry_changed_cb), dd);

	dest_dnd_init(dd);

	return table;
}

GtkWidget *path_selection_new(const gchar *path, GtkWidget *entry)
{
	return path_selection_new_with_files(entry, path, NULL, NULL);
}

void path_selection_sync_to_entry(GtkWidget *entry)
{
	Dest_Data *dd = g_object_get_data(G_OBJECT(entry), "destination_data");
	const gchar *path;

	if (!dd) return;

	path = gtk_entry_get_text(GTK_ENTRY(entry));
	
	if (isdir(path) && (!dd->path || strcmp(path, dd->path) != 0))
		{
		dest_populate(dd, path);
		}
	else
		{
		gchar *buf = remove_level_from_path(path);
		if (isdir(buf) && (!dd->path || strcmp(buf, dd->path) != 0))
			{
			dest_populate(dd, buf);
			}
		g_free(buf);
		}
}

void path_selection_add_select_func(GtkWidget *entry,
				    void (*func)(const gchar *, gpointer), gpointer data)
{
	Dest_Data *dd = g_object_get_data(G_OBJECT(entry), "destination_data");

	if (!dd) return;

	dd->select_func = func;
	dd->select_data = data;
}

void path_selection_add_filter(GtkWidget *entry, const gchar *filter, const gchar *description, gint set)
{
	Dest_Data *dd = g_object_get_data(G_OBJECT(entry), "destination_data");

	if (!dd) return;
	if (!filter) return;

	dest_filter_add(dd, filter, description, set);
}

void path_selection_clear_filter(GtkWidget *entry)
{
	Dest_Data *dd = g_object_get_data(G_OBJECT(entry), "destination_data");

	if (!dd) return;

	dest_filter_clear(dd);
}