X-Git-Url: http://pileus.org/git/?p=grits;a=blobdiff_plain;f=src%2Fobjects%2Fgrits-object.h;h=d7cd2b0491277c9dac19d99947ec052536e821d6;hp=de77ac5da4e0d75286c1c435f37484ddd7219997;hb=1d0635977583ad84faaa1978f1fd78fa3ec83052;hpb=3d5aab9907082844afa9c1f5d28ef0b44d5fa74a

diff --git a/src/objects/grits-object.h b/src/objects/grits-object.h
index de77ac5..d7cd2b0 100644
--- a/src/objects/grits-object.h
+++ b/src/objects/grits-object.h
@@ -36,6 +36,12 @@
 #define GRITS_SKIP_CENTER  (1<<2)
 #define GRITS_SKIP_STATE   (1<<3)
 
+/* Picking states */
+typedef struct {
+	guint picked   : 1;
+	guint selected : 1;
+} GritsState;
+
 typedef struct _GritsObject      GritsObject;
 typedef struct _GritsObjectClass GritsObjectClass;
 
@@ -48,6 +54,8 @@ struct _GritsObject {
 	gboolean     hidden; // If true, the object will not be drawn
 	gdouble      lod;    // Level of detail, used to hide small objects
 	guint32      skip;   // Bit mask of safe operations
+
+	GritsState   state;  // Internal, used for picking
 };
 
 struct _GritsObjectClass {
@@ -55,6 +63,7 @@ struct _GritsObjectClass {
 
 	/* Move some of these to GObject? */
 	void (*draw) (GritsObject *object, GritsOpenGL *opengl);
+	void (*pick) (GritsObject *object, GritsOpenGL *opengl);
 	void (*hide) (GritsObject *object, gboolean hidden);
 };
 
@@ -65,6 +74,11 @@ void grits_object_draw(GritsObject *object, GritsOpenGL *opengl);
 
 void grits_object_hide(GritsObject *object, gboolean hidden);
 
+/* Interal, used by grits_opengl */
+void grits_object_pick_begin(GritsObject *object, GritsOpenGL *opengl);
+void grits_object_pick_pointer(GritsObject *object, double x, double y);
+void grits_object_pick_end(GritsObject *object);
+
 /**
  * grits_object_queue_draw:
  * @object: The #GritsObject that needs drawing