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29 | |
30 | #include "qbardataitem_p.h" |
31 | |
32 | QT_BEGIN_NAMESPACE_DATAVISUALIZATION |
33 | |
34 | /*! |
35 | * \class QBarDataItem |
36 | * \inmodule QtDataVisualization |
37 | * \brief The QBarDataItem class provides a container for resolved data to be added to bar graphs. |
38 | * \since QtDataVisualization 1.0 |
39 | * |
40 | * A bar data item holds the data for a single rendered bar in a graph. |
41 | * Bar data proxies parse data into QBarDataItem instances for visualization. |
42 | * |
43 | * \sa QBarDataProxy, {Qt Data Visualization C++ Classes} |
44 | */ |
45 | |
46 | /*! |
47 | * Constructs a bar data item. |
48 | */ |
49 | QBarDataItem::QBarDataItem() |
50 | : d_ptr(0), // private data doesn't exist by default (optimization) |
51 | m_value(0.0f), |
52 | m_angle(0.0f) |
53 | { |
54 | } |
55 | |
56 | /*! |
57 | * Constructs a bar data item with the value \a value. |
58 | */ |
59 | QBarDataItem::QBarDataItem(float value) |
60 | : d_ptr(0), |
61 | m_value(value), |
62 | m_angle(0.0f) |
63 | { |
64 | } |
65 | |
66 | /*! |
67 | * Constructs a bar data item with the value \a value and angle \a angle. |
68 | */ |
69 | QBarDataItem::QBarDataItem(float value, float angle) |
70 | : d_ptr(0), |
71 | m_value(value), |
72 | m_angle(angle) |
73 | { |
74 | } |
75 | |
76 | /*! |
77 | * Constructs a copy of \a other. |
78 | */ |
79 | QBarDataItem::QBarDataItem(const QBarDataItem &other) |
80 | { |
81 | operator=(other); |
82 | } |
83 | |
84 | /*! |
85 | * Deletes a bar data item. |
86 | */ |
87 | QBarDataItem::~QBarDataItem() |
88 | { |
89 | delete d_ptr; |
90 | } |
91 | |
92 | /*! |
93 | * Assigns a copy of \a other to this object. |
94 | */ |
95 | QBarDataItem &QBarDataItem::operator=(const QBarDataItem &other) |
96 | { |
97 | m_value = other.m_value; |
98 | m_angle = other.m_angle; |
99 | if (other.d_ptr) |
100 | createExtraData(); |
101 | else |
102 | d_ptr = 0; |
103 | return *this; |
104 | } |
105 | |
106 | /*! |
107 | * \fn void QBarDataItem::setValue(float val) |
108 | * Sets the value \a val to this data item. |
109 | */ |
110 | |
111 | /*! |
112 | * \fn float QBarDataItem::value() const |
113 | * Returns the value of this data item. |
114 | */ |
115 | |
116 | /*! |
117 | * \fn void QBarDataItem::setRotation(float angle) |
118 | * Sets the rotation angle \a angle in degrees for this data item. |
119 | */ |
120 | |
121 | /*! |
122 | * \fn float QBarDataItem::rotation() const |
123 | * Returns the rotation angle in degrees for this data item. |
124 | */ |
125 | |
126 | /*! |
127 | * \internal |
128 | */ |
129 | void QBarDataItem::() |
130 | { |
131 | if (!d_ptr) |
132 | d_ptr = new QBarDataItemPrivate; |
133 | } |
134 | |
135 | QBarDataItemPrivate::QBarDataItemPrivate() |
136 | { |
137 | } |
138 | |
139 | QBarDataItemPrivate::~QBarDataItemPrivate() |
140 | { |
141 | } |
142 | |
143 | QT_END_NAMESPACE_DATAVISUALIZATION |
144 | |