Allow specifying a custom spacing for a constraint

[libs/gltk.git] / source / layout.h

diff --git a/source/layout.h b/source/layout.h
index cbd763e9e5337dc7a6395d7d0b3a860c6d9ad7e1..230365182e1d84a881bc363a48487234215fd3a7 100644 (file)
--- a/source/layout.h
+++ b/source/layout.h
@@ -84,6 +84,7 @@ protected:
        {
                ConstraintType type;
                Slot ⌖
+               int spacing;
 
                Constraint(ConstraintType, Slot &);
        };
@@ -147,8 +148,16 @@ protected:
        virtual Slot *create_slot(Widget &);
        Slot &get_slot_for_widget(Widget &);
        static ConstraintType complement(ConstraintType);
+       void create_constraint(Widget &, ConstraintType, Widget &, int);
+
 public:
-       void add_constraint(Widget &, ConstraintType, Widget &);
+       /** Adds a constraint between two widgets. */
+       void add_constraint(Widget &src, ConstraintType type, Widget &tgt);
+
+       /** Adds a constraint between two widgets, overriding the default spacing.
+       Not all constraint types use a spacing. */
+       void add_constraint(Widget &src, ConstraintType type, Widget &tgt, unsigned);
+
        void set_gravity(Widget &, int, int);
        void set_expand(Widget &, bool, bool);