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comparison d1/qt/core/QMetaObject.d @ 311:8674fd5f34f4 lifetime

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Added d1/d2 top directories
author maxter <spambox@d-coding.com>
date Wed, 23 Dec 2009 16:17:22 +0200
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310:5bcfe9e7db7f 311:8674fd5f34f4
1 module qt.core.QMetaObject;
2
3 import
4 qt.Core,
5 qt.core.QObject,
6 qt.QtdObject;
7
8 /++
9 Meta-object for QObject classes.
10 +/
11 final class QMetaObject : QtdMetaObjectBase
12 {
13 alias typeof(this) This;
14
15 this(void* nativeId, QtdMetaObjectBase base, CreateWrapper createWrapper)
16 {
17 super(nativeId, base, createWrapper);
18 }
19
20 private QMetaObject lookupDerived(void*[] moIds)
21 {
22 assert (moIds.length >= 1);
23
24 for (auto mo = static_cast!(This)(firstDerived); mo !is null; mo = static_cast!(This)(mo.next))
25 {
26 if (mo.nativeId == moIds[0])
27 {
28 if (moIds.length == 1) // exact match found
29 return mo;
30 else // look deeper
31 return mo.lookupDerived(moIds[1..$]);
32 }
33 }
34
35 // no initialized wrapper that matches the native object.
36 // use the base class wrapper
37 return this;
38 }
39
40 QObject wrap(void* nativeObjId, QtdObjectFlags flags = QtdObjectFlags.none)
41 {
42 QObject result;
43
44 if (nativeObjId)
45 {
46 result = cast(QObject)qtd_get_d_qobject(nativeObjId);
47 if (!result)
48 {
49 auto moId = qtd_QObject_typeId(nativeObjId);
50 if (nativeId == moId)
51 result = static_cast!(QObject)(_createWrapper(nativeObjId, flags));
52 else
53 {
54 // get native metaobjects for the entire derivation lattice
55 // up to, but not including, the current metaobject.
56 size_t moCount = 1;
57
58 for (void* tmp = moId;;)
59 {
60 tmp = qtd_QMetaObject_superClass(tmp);
61 if (!tmp)
62 return null;
63
64 if (tmp == nativeId)
65 break;
66 moCount++;
67 }
68
69 void*[] moIds = (cast(void**)alloca(moCount * (void*).sizeof))[0..moCount];
70
71 moIds[--moCount] = moId;
72 while (moCount > 0)
73 moIds[--moCount] = moId = qtd_QMetaObject_superClass(moId);
74
75 auto mo = lookupDerived(moIds);
76 result = static_cast!(QObject)(mo._createWrapper(nativeObjId, flags));
77 }
78 }
79 }
80
81 return result;
82 }
83 }
84
85 extern(C) void* qtd_QMetaObject_superClass(void* nativeId);