QA: factorize GObject cast operations (datasource_gc.c)

GObject cast operation consume CPU, so it could be useful to reduce the
number of call (even if it is low consumption).
Furthermore, it is better to have small source code lines.

diff --git a/src/datasource_gc.c b/src/datasource_gc.c
index 7b61d298d3c3ed2496f0877d5f5fb3970fb5f627..b8840e725c294eeb9e3d2a257f804ca695f2ff9c 100644 (file)
--- a/src/datasource_gc.c
+++ b/src/datasource_gc.c
@@ -208,12 +208,14 @@ static void datasource_gc_add_setup_widgets ( GtkWidget *dialog, VikViewport *vv
   g_signal_connect_swapped ( G_OBJECT(widgets->center_entry), "changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
   g_signal_connect_swapped ( G_OBJECT(widgets->miles_radius_spin), "value-changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
 
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), num_label, FALSE, FALSE, 5 );
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), widgets->num_spin, FALSE, FALSE, 5 );
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), center_label, FALSE, FALSE, 5 );
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), widgets->center_entry, FALSE, FALSE, 5 );
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), miles_radius_label, FALSE, FALSE, 5 );
-  gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), widgets->miles_radius_spin, FALSE, FALSE, 5 );
+  /* Packing all these widgets */
+  GtkBox *box = GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog)));
+  gtk_box_pack_start ( box, num_label, FALSE, FALSE, 5 );
+  gtk_box_pack_start ( box, widgets->num_spin, FALSE, FALSE, 5 );
+  gtk_box_pack_start ( box, center_label, FALSE, FALSE, 5 );
+  gtk_box_pack_start ( box, widgets->center_entry, FALSE, FALSE, 5 );
+  gtk_box_pack_start ( box, miles_radius_label, FALSE, FALSE, 5 );
+  gtk_box_pack_start ( box, widgets->miles_radius_spin, FALSE, FALSE, 5 );
   gtk_widget_show_all(dialog);
 }