/[gzz]/gzz/doc/Gzz_Frontend_View.rst
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revision 1.1 by humppake, Wed Dec 18 15:58:47 2002 UTC revision 1.2 by tjl, Thu Dec 19 23:05:17 2002 UTC
# Line 1  Line 1 
1  =================  ==========================
2  Gzz Frontend View  Gzz Frontend: View Classes
3  =================  ==========================
4    
5    Views are responsible for generating Vob scenes based on
6    the data in the structure.
7    
 XXX Some description about the view system here :)  
8    
9  `gzz.view`__ package summary  `gzz.view`__ package summary
10    
# Line 11  XXX Some description about the view syst Line 13  XXX Some description about the view syst
13  __ view_  __ view_
14    
15    
16  .. UML-refer:: view  .. UML:: viewclasses
17    
18        jlinkpackage gzz.view
19    
20        package gzz.client
21                jlink
22                use View
23    
24        package Vobs
25                jlink
26                        Gzz_Frontend_Vobs.gen.html
27    
28        bigpackage gzz.view
29                jlink
30    
31        class ViewContext "interface"
32                jlink
33                methods
34                        Cell getAccursed()
35                        Dim[] getDims()
36                        CellView getCellView()
37                        CellView getCellContentView()
38                        boolean isMarked()
39                        java.util.List getCursorColor(Cell c)
40                        int getCursorOffset(Cell c)
41    
42        class View "interface"
43                jlink
44                use ViewContext
45                use CellView
46                use Vobs
47                methods
48                        void render(VobScene vs, int box, ViewContext context)
49    
50        class CellView "abstract"
51                jlink
52                methods
53                        void getSize(Cell c, ViewContext context, float[] out)
54                        void getSize(Cell c, float scale, ViewContext context, float[] out)
55                        void place(Cell c, VobScene vs, int box, ViewContext context)
56                use ViewContext
57                use Vobs
58    
59        ---
60        ViewContext.c = (0, 10);
61    
62        View.c = (250, 100);
63          vertically(50, view_v, View, CellView);
64    
65    
66        gzz.client.c = (0, 200);
67    
68        Vobs.c = (500, ypart ViewContext.c);  
69          
70        pad = 30;
71        gzz.view.nw = ViewContext.nw +(-pad, 100);
72        xpart gzz.view.e = xpart(CellView.e) + pad;
73    
74    CellView actually appears in at least two different roles: for placing cells
75    and for placing cell contents. The following diagram shows the sequence in which a
76    view might work.
77    
78    .. UML:: view_seq
79    
80        seqobject View
81        seqobject CellView
82        seqobject CellContentView
83        seqobject ViewContext
84    
85        sequence useView
86          call View "render(vs, box, context)"
87            call ViewContext "getCellView()"
88              return
89            call ViewContext "getAccursed()"
90              return
91            call CellView "getSize(null, context, size[])"
92              call ViewContext "getCellContentView()"
93              call CellContentView "getSize(c, scale, context, size)"
94                return
95              return
96            call CellView "place(c, vs, box, context)"
97              call ViewContext "getAccursed()"
98                return
99              call ViewContext "getCellContentView()"
100                return
101              call ViewContext "getCursorColors(c)"
102                return
103              call CellContentView "place(c, vs, box, context)"
104            return
105          return
106        ---
107        View.c = (0,0);
108          horizontally(100, view_h, View, CellView, CellContentView, ViewContext);
109    
110    
111    
 .. UML-refer:: viewseq  

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