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1 classdef Abstractlayout < handle
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2 % This class represents an abstract graph layout. Subclass to create actual
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3 % layouts.
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4
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5 properties(Abstract = true)
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6 xmin; % The left most point on the graph axis in data units
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7 xmax; % The right most point on the graph axis in data units
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8 ymin; % The bottom most point on the graph axis in data units
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9 ymax; % The top most point on the graph axis in data units
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10 adjMatrix; % The adjacency matrix
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11 maxNodeSize; % The maximum diameter of a node in data units
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12 image; % A 20-by-20-by-3 array specifying an image for
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13 % the smartgraph button that will launch this
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14 % layout.
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15 name; % A unique name for instances of this class.
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16 shortDescription; % A short description used for tooltips.
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17 nodeSize; % The calculated node size, call dolayout() before accessing
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18 centers; % The calculated node centers in an n-by-2 matrix
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19 end
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20
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21 methods
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22 function dolayout(obj,adjMatrix,graphAxis,maxNodeSize)
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23 % Calculate the node centers and an optimal size
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24 obj.adjMatrix = adjMatrix;
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25 obj.maxNodeSize = maxNodeSize;
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26 xlimits = get(graphAxis,'XLim');
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27 ylimits = get(graphAxis,'YLim');
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28 obj.xmin = xlimits(1); obj.xmax = xlimits(2);
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29 obj.ymin = xlimits(1); obj.ymax = ylimits(2);
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30 obj.calcLayout();
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31 end
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32
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33 function available = isavailable(obj)
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34 % Test to see if this layout is available.
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35 available = true;
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36 end
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37
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38 end
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39
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40 methods(Access = 'protected')
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41
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42 function setImage(obj,color)
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43 % Sets the image to a grid with the specified color in rgb normalized
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44 % units, i.e. [0.2 0.5 0.9].
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45 obj.image = cat(3,color(1)*ones(20,20),color(2)*ones(20,20),color(3)*ones(20,20));
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46 obj.image(1:4:20,:,:) = 0;
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47 obj.image(:,1:4:20,:) = 0;
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48 end
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49
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50
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51 end
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52
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53 methods(Abstract = true, Access = 'protected')
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54 calcLayout(obj); % do the actual work
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55 end
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56
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57 end |
