Convert for expose callback to callback objects

[grits] / src / gis-viewer.h

diff --git a/src/gis-viewer.h b/src/gis-viewer.h
index 214ce932959267aa92810ed3a4c1c0eba9bd0160..6b95e1a03f9b66ad5c02a76efa841116c8c49b34 100644 (file)
--- a/src/gis-viewer.h
+++ b/src/gis-viewer.h
@@ -21,6 +21,11 @@
 #include <gtk/gtk.h>
 #include <glib-object.h>
 
+#define GIS_LEVEL_BACKGROUND -100
+#define GIS_LEVEL_WORLD         0
+#define GIS_LEVEL_OVERLAY     100
+#define GIS_LEVEL_HUD         200
+
 /* Type macros */
 #define GIS_TYPE_VIEWER            (gis_viewer_get_type())
 #define GIS_VIEWER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_VIEWER, GisViewer))
@@ -72,8 +77,9 @@ struct _GisViewerClass {
        void (*begin)            (GisViewer *viewer);
        void (*end)              (GisViewer *viewer);
 
-       void (*add)              (GisViewer *viewer, GisObject *object);
-       void (*remove)           (GisViewer *viewer, GisObject *object);
+       gpointer (*add)          (GisViewer *viewer, GisObject *object,
+                                 gint level, gboolean sort);
+       void (*remove)           (GisViewer *viewer, gpointer ref);
 };
 
 GType gis_viewer_get_type(void);
@@ -121,7 +127,8 @@ void gis_viewer_render_tiles(GisViewer *viewer, GisTile *root);
 void gis_viewer_begin(GisViewer *viewer);
 void gis_viewer_end  (GisViewer *viewer);
 
-void gis_viewer_add(GisViewer *self, GisObject *object);
-void gis_viewer_remove(GisViewer *self, GisObject *object);
+gpointer gis_viewer_add(GisViewer *self, GisObject *object,
+               gint level, gboolean sort);
+void gis_viewer_remove(GisViewer *self, gpointer ref);
 
 #endif