Daniel@0: classdef Abstractlayout < handle
Daniel@0: % This class represents an abstract graph layout. Subclass to create actual
Daniel@0: % layouts.  
Daniel@0: 
Daniel@0:   properties(Abstract = true)
Daniel@0:      xmin;               % The left most point on the graph axis in data units           
Daniel@0:      xmax;               % The right most point on the graph axis in data units
Daniel@0:      ymin;               % The bottom most point on the graph axis in data units
Daniel@0:      ymax;               % The top most point on the graph axis in data units
Daniel@0:      adjMatrix;          % The adjacency matrix
Daniel@0:      maxNodeSize;        % The maximum diameter of a node in data units
Daniel@0:      image;              % A 20-by-20-by-3 array specifying an image for 
Daniel@0:                          % the smartgraph button that will launch this
Daniel@0:                          % layout.
Daniel@0:      name;               % A unique name for instances of this class. 
Daniel@0:      shortDescription;   % A short description used for tooltips.
Daniel@0:      nodeSize;           % The calculated node size, call dolayout() before accessing
Daniel@0:      centers;            % The calculated node centers in an n-by-2 matrix
Daniel@0:   end
Daniel@0:     
Daniel@0:    methods
Daniel@0:        function dolayout(obj,adjMatrix,graphAxis,maxNodeSize)
Daniel@0:        % Calculate the node centers and an optimal size
Daniel@0:             obj.adjMatrix = adjMatrix;
Daniel@0:             obj.maxNodeSize = maxNodeSize;
Daniel@0:             xlimits = get(graphAxis,'XLim');
Daniel@0:             ylimits = get(graphAxis,'YLim');
Daniel@0:             obj.xmin = xlimits(1); obj.xmax = xlimits(2);
Daniel@0:             obj.ymin = xlimits(1); obj.ymax = ylimits(2);
Daniel@0:             obj.calcLayout();
Daniel@0:        end
Daniel@0:        
Daniel@0:        function available = isavailable(obj)
Daniel@0:        % Test to see if this layout is available.    
Daniel@0:            available = true;
Daniel@0:        end
Daniel@0:        
Daniel@0:    end
Daniel@0:    
Daniel@0:    methods(Access = 'protected')
Daniel@0:       
Daniel@0:        function setImage(obj,color)
Daniel@0:        % Sets the image to a grid with the specified color in rgb normalized
Daniel@0:        % units, i.e. [0.2 0.5 0.9].
Daniel@0:             obj.image = cat(3,color(1)*ones(20,20),color(2)*ones(20,20),color(3)*ones(20,20));
Daniel@0:             obj.image(1:4:20,:,:) = 0;
Daniel@0:             obj.image(:,1:4:20,:) = 0;
Daniel@0:        end
Daniel@0:        
Daniel@0:        
Daniel@0:    end
Daniel@0:    
Daniel@0:    methods(Abstract = true, Access = 'protected')
Daniel@0:        calcLayout(obj);     % do the actual work
Daniel@0:    end
Daniel@0:     
Daniel@0: end