7fd59977 |
1 | -- File: AIS_AttributeFilter.cdl |
2 | -- Created: Tue Mar 4 17:58:52 1997 |
3 | -- Author: Robert COUBLANC |
4 | -- <rob@robox.paris1.matra-dtv.fr> |
5 | ---Copyright: Matra Datavision 1997 |
6 | |
7 | |
8 | |
9 | |
10 | class AttributeFilter from AIS inherits Filter from SelectMgr |
11 | |
12 | ---Purpose: Selects Interactive Objects, which have the desired width or color. |
13 | -- The filter questions each Interactive Object in local |
14 | -- context to determine whether it has an non-null |
15 | -- owner, and if so, whether it has the required color |
16 | -- and width attributes. If the object returns true in each |
17 | -- case, it is kept. If not, it is rejected. |
18 | -- This filter is used only in an open local context. |
19 | -- In the Collector viewer, you can only locate |
20 | -- Interactive Objects, which answer positively to the |
21 | -- filters, which are in position when a local context is open. |
22 | |
23 | uses |
24 | NameOfColor from Quantity, |
25 | EntityOwner from SelectMgr |
26 | |
27 | |
28 | is |
29 | |
30 | Create returns mutable AttributeFilter from AIS; |
31 | ---Purpose: |
32 | -- Constructs an empty attribute filter object. |
33 | -- This filter object determines whether selectable |
34 | -- interactive objects have a non-null owner. |
35 | |
36 | Create (aCol: NameOfColor from Quantity) |
37 | returns mutable AttributeFilter from AIS; |
38 | ---Purpose: |
39 | -- Constructs an attribute filter object defined by the |
40 | -- color attribute aCol. |
41 | Create (aWidth : Real from Standard) |
42 | returns mutable AttributeFilter from AIS; |
43 | ---Purpose: |
44 | -- Constructs an attribute filter object defined by the line |
45 | -- width attribute aWidth. |
46 | |
47 | HasColor(me) returns Boolean from Standard; |
48 | ---C++: inline |
49 | ---Purpose: |
50 | -- Indicates that the Interactive Object has the color |
51 | -- setting specified by the argument aCol at construction time. |
52 | |
53 | HasWidth(me) returns Boolean from Standard; |
54 | ---C++: inline |
55 | ---Purpose: |
56 | -- Indicates that the Interactive Object has the width |
57 | -- setting specified by the argument aWidth at |
58 | -- construction time. |
59 | |
60 | SetColor(me:mutable;aCol: NameOfColor from Quantity); |
61 | ---C++: inline |
62 | ---Purpose: Sets the color aCol. |
63 | -- This must be chosen from the list of colors in Quantity_NameOfColor. |
64 | |
65 | SetWidth(me:mutable;aWidth : Real from Standard); |
66 | ---C++: inline |
67 | ---Purpose: Sets the line width aWidth. |
68 | |
69 | UnsetColor(me:mutable); |
70 | ---C++: inline |
71 | ---Purpose: |
72 | -- Removes the setting for color from the filter. |
73 | |
74 | UnsetWidth(me:mutable); |
75 | ---C++: inline |
76 | ---Purpose: |
77 | -- Removes the setting for width from the filter. |
78 | |
79 | IsOk(me;anObj : EntityOwner from SelectMgr) |
80 | returns Boolean from Standard is redefined virtual; |
81 | ---Purpose: Indicates that the selected Interactive Object passes |
82 | -- the filter. The owner, anObj, can be either direct or |
83 | -- user. A direct owner is the corresponding |
84 | -- construction element, whereas a user is the |
85 | -- compound shape of which the entity forms a part. |
86 | -- If the Interactive Object returns Standard_True |
87 | -- when detected by the Local Context selector through |
88 | -- the mouse, the object is kept; if not, it is rejected. |
89 | |
90 | |
91 | fields |
92 | |
93 | myCol : NameOfColor from Quantity; |
94 | myWid : Real from Standard; |
95 | hasC,hasW : Boolean from Standard; |
96 | |
97 | end AttributeFilter; |