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39
40#ifndef QQMLPROPERTYINDEX_P_H
41#define QQMLPROPERTYINDEX_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <private/qglobal_p.h>
55
56QT_BEGIN_NAMESPACE
57
58class QQmlPropertyIndex
59{
60 qint32 index;
61
62public:
63 QQmlPropertyIndex()
64 { index = -1; }
65
66 static QQmlPropertyIndex fromEncoded(qint32 encodedIndex)
67 {
68 QQmlPropertyIndex idx;
69 idx.index = encodedIndex;
70 return idx;
71 }
72
73 explicit QQmlPropertyIndex(int coreIndex)
74 { index = encode(coreIndex, valueTypeIndex: -1); }
75
76 explicit QQmlPropertyIndex(int coreIndex, int valueTypeIndex)
77 : index(encode(coreIndex, valueTypeIndex))
78 {}
79
80 bool isValid() const
81 { return index != -1; }
82
83 int coreIndex() const
84 {
85 if (index == -1)
86 return -1;
87 return index & 0xffff;
88 }
89
90 int valueTypeIndex() const
91 {
92 if (index == -1)
93 return -1;
94 return (index >> 16) - 1;
95 }
96
97 bool hasValueTypeIndex() const
98 {
99 if (index == -1)
100 return false;
101 return index >> 16;
102 }
103
104 qint32 toEncoded() const
105 { return index; }
106
107 int intValue() const
108 { return index; }
109
110 bool operator==(const QQmlPropertyIndex &other) const
111 { return index == other.index; }
112
113 bool operator!=(const QQmlPropertyIndex &other) const
114 { return !operator==(other); }
115
116private:
117 static qint32 encode(int coreIndex, int valueTypeIndex)
118 {
119 Q_ASSERT(coreIndex >= -1);
120 Q_ASSERT(coreIndex <= 0xffff);
121 Q_ASSERT(valueTypeIndex >= -1);
122 Q_ASSERT(valueTypeIndex < 0xffff);
123
124 if (coreIndex == -1)
125 return -1;
126 else
127 return coreIndex | ((valueTypeIndex + 1) << 16);
128 }
129};
130
131QT_END_NAMESPACE
132
133#endif // QQMLPROPERTYINDEX_P_H
134

source code of qtdeclarative/src/qml/qml/qqmlpropertyindex_p.h