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1 package JSci.awt;
2
3 import java.awt.*;
4
5
15 public final class GraphLayout implements LayoutManager2 {
16 public final static String  TITLE = "Title";
17 public final static String GRAPH = "Graph";
18 public final static String X_AXIS = "X-axis";
19 public final static String Y_AXIS = "Y-axis";
20 private Component title,graph,xaxis,yaxis;
21
22 public GraphLayout() {}
23 public void addLayoutComponent(String name,Component comp) {
24 if(TITLE.equals(name))
25 title=comp;
26 else if(GRAPH.equals(name) || name == null)
27 graph=comp;
28 else if(X_AXIS.equals(name))
29 xaxis=comp;
30 else if(Y_AXIS.equals(name))
31 yaxis=comp;
32 }
33 public void addLayoutComponent(Component comp,Object constraint) {
34 String name = (constraint != null ? constraint.toString() : null);
35 addLayoutComponent(name, comp);
36 }
37 public void removeLayoutComponent(Component comp) {
38 if(comp == title)
39 title=null;
40 if(comp == graph)
41 graph=null;
42 if(comp == xaxis)
43 xaxis=null;
44 if(comp == yaxis)
45 yaxis=null;
46 }
47 public void layoutContainer(Container parent) {
48 synchronized(parent.getTreeLock()) {
49 Dimension size=parent.getSize();
50 Insets insets=parent.getInsets();
51 final int width=size.width-insets.left-insets.right;
52 final int height=size.height-insets.top-insets.bottom;
53 int graphLeftPad=0,graphAxisPad=0;
54 if(graph instanceof Graph2D) {
55 graphLeftPad=((Graph2D)graph).leftAxisPad;
56 graphAxisPad=((Graph2D)graph).axisPad;
57 } else if(graph instanceof CategoryGraph2D) {
58 graphLeftPad=((CategoryGraph2D)graph).leftAxisPad;
59 graphAxisPad=((CategoryGraph2D)graph).axisPad;
60 }
61 int yaxisWidth=getMinimumSize(yaxis).width;
62 int graphWidth=width-yaxisWidth;
63 int titleWidth=graphWidth-graphLeftPad-graphAxisPad;
64 int xaxisWidth=titleWidth;
65 int titleHeight=getMinimumSize(title).height;
66 int xaxisHeight=getMinimumSize(xaxis).height;
67 int graphHeight=height-titleHeight-xaxisHeight;
68 int yaxisHeight=graphHeight-2*graphAxisPad;
69 if(title!=null)
70 title.setBounds(insets.left+yaxisWidth+graphLeftPad,insets.top,titleWidth,titleHeight);
71 if(graph!=null)
72 graph.setBounds(insets.left+yaxisWidth,insets.top+titleHeight,graphWidth,graphHeight);
73 if(yaxis!=null)
74 yaxis.setBounds(insets.left,insets.top+titleHeight+graphAxisPad,yaxisWidth,yaxisHeight);
75 if(xaxis!=null)
76 xaxis.setBounds(insets.left+yaxisWidth+graphLeftPad,height-xaxisHeight,xaxisWidth,xaxisHeight);
77 }
78 }
79 public void invalidateLayout(Container parent) {}
80 public float getLayoutAlignmentX(Container parent) {
81 return 0.5f;
82 }
83 public float getLayoutAlignmentY(Container parent) {
84 return 0.5f;
85 }
86 public Dimension minimumLayoutSize(Container parent) {
87 return calculateLayoutSize(parent.getInsets(),
88 getMinimumSize(title),
89 getMinimumSize(graph),
90 getMinimumSize(xaxis),
91 getMinimumSize(yaxis));
92 }
93 private static Dimension getMinimumSize(Component comp) {
94 if(comp==null)
95 return new Dimension();
96 else
97 return comp.getMinimumSize();
98 }
99 public Dimension preferredLayoutSize(Container parent) {
100 return calculateLayoutSize(parent.getInsets(),
101 getMinimumSize(title),
102 getPreferredSize(graph),
103 getMinimumSize(xaxis),
104 getMinimumSize(yaxis));
105 }
106 private static Dimension getPreferredSize(Component comp) {
107 if(comp==null)
108 return new Dimension();
109 else
110 return comp.getPreferredSize();
111 }
112 public Dimension maximumLayoutSize(Container parent) {
113 return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
114 }
115 private static Dimension calculateLayoutSize(Insets insets,Dimension title,Dimension graph,Dimension xaxis,Dimension yaxis) {
116 int width = insets.left+insets.right;
117 width += Math.max(title.width, yaxis.width+graph.width);
118 int height = insets.top+insets.bottom;
119 height += title.height+xaxis.height;
120 height += Math.max(yaxis.height, graph.height);
121 return new Dimension(width,height);
122 }
123 }
124
125 |
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