fix .tiff loader.

add a testcase for the "updated_area"

demos/testpixbuf.c

@@ -445,6 +445,14 @@ progressive_prepared_callback(GdkPixbufLoader* loader, gpointer data)
         return;
 }
 
+
+static void
+progressive_updated_callback(GdkPixbufLoader* loader, guint x, guint y, guint width, guint height, gpointer data)
+{
+	g_print ("progressive_updated_callback:\n\t%d\t%d\t%d\t%d\n", x, y, width, height);
+        return;
+}
+
 static int readlen = 1;
 
 int
@@ -516,6 +524,11 @@ main (int argc, char **argv)
                                            GTK_SIGNAL_FUNC(progressive_prepared_callback),
                                            &rgb_window);
 
+                        gtk_signal_connect(GTK_OBJECT(pixbuf_loader),
+                                           "area_updated",
+                                           GTK_SIGNAL_FUNC(progressive_updated_callback),
+                                           &rgb_window);
+
                         timeout = gtk_timeout_add(1000, update_timeout, &rgb_window);
                         
                         file = fopen (argv[1], "r");

gdk-pixbuf/io-tiff.c

@@ -146,6 +146,7 @@ image_begin_load (ModulePreparedNotifyFunc prepare_func,
 
 	context = g_new (TiffData, 1);
 	context->prepare_func = prepare_func;
+	context->update_func = update_func;
 	context->user_data = user_data;
 	context->all_okay = TRUE;
 	context->tempname = g_strdup ("/tmp/gdkpixbuf-tif-tmp.XXXXXX");