module doodle.fig.diagram_elements;

private {
    import doodle.tk.geometry;
    import doodle.cairo.routines;
}

abstract class DiagramElement {
    Rectangle bounds() const;

    void draw(in Rectangle damage, scope Context cr) const;

    private {
        GraphElement _container;
    }
}

abstract class SemanticModelBridge {
};

abstract class GraphElement : DiagramElement {
    // Link to model via bridge goes here
    private {
        SemanticModelBridge _modelBridge;
        GraphConnector[] _anchorages;
    }
}

final class GraphConnector {
}

final class GraphNode : GraphElement {
}

final class GraphEdge : GraphElement {
    private {
        GraphConnector[2] _anchors;
    }
}

abstract class LeafElement : DiagramElement {
}

final class TextElement : LeafElement {
}

abstract class GraphicPrimitive : LeafElement {
}

final class PolylinePrimitive : GraphicPrimitive {
    private {
        Point[] _waypoints;
    }
}

final class RectanglePrimitive : GraphicPrimitive {
    override void draw(in Rectangle damage, scope Context cr) const {
        rectangle(cr, bounds);
    }
}