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2 | ** |
3 | ** Copyright (C) 2017 The Qt Company Ltd. |
4 | ** Contact: http://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:LGPL3$ |
9 | ** Commercial License Usage |
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17 | ** GNU Lesser General Public License Usage |
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24 | ** |
25 | ** GNU General Public License Usage |
26 | ** Alternatively, this file may be used under the terms of the GNU |
27 | ** General Public License version 2.0 or later as published by the Free |
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35 | ****************************************************************************/ |
36 | |
37 | #ifndef QQUICKTUMBLER_P_P_H |
38 | #define QQUICKTUMBLER_P_P_H |
39 | |
40 | // |
41 | // W A R N I N G |
42 | // ------------- |
43 | // |
44 | // This file is not part of the Qt API. It exists purely as an |
45 | // implementation detail. This header file may change from version to |
46 | // version without notice, or even be removed. |
47 | // |
48 | // We mean it. |
49 | // |
50 | |
51 | #include <QtQuickTemplates2/private/qquickcontrol_p_p.h> |
52 | #include <QtQuickTemplates2/private/qquicktumbler_p.h> |
53 | |
54 | QT_BEGIN_NAMESPACE |
55 | |
56 | class Q_QUICKTEMPLATES2_PRIVATE_EXPORT QQuickTumblerPrivate : public QQuickControlPrivate |
57 | { |
58 | Q_DECLARE_PUBLIC(QQuickTumbler) |
59 | |
60 | public: |
61 | enum ContentItemType { |
62 | NoContentItem, |
63 | UnsupportedContentItemType, |
64 | PathViewContentItem, |
65 | ListViewContentItem |
66 | }; |
67 | |
68 | QQuickItem *determineViewType(QQuickItem *contentItem); |
69 | void resetViewData(); |
70 | QList<QQuickItem *> viewContentItemChildItems() const; |
71 | |
72 | static QQuickTumblerPrivate *get(QQuickTumbler *tumbler); |
73 | |
74 | QVariant model; |
75 | QQmlComponent *delegate = nullptr; |
76 | int visibleItemCount = 5; |
77 | bool wrap = true; |
78 | bool explicitWrap = false; |
79 | bool modelBeingSet = false; |
80 | bool currentIndexSetDuringModelChange = false; |
81 | QQuickItem *view = nullptr; |
82 | QQuickItem *viewContentItem = nullptr; |
83 | ContentItemType viewContentItemType = UnsupportedContentItemType; |
84 | union { |
85 | qreal viewOffset; // PathView |
86 | qreal viewContentY; // ListView |
87 | }; |
88 | int currentIndex = -1; |
89 | int pendingCurrentIndex = -1; |
90 | bool ignoreCurrentIndexChanges = false; |
91 | int count = 0; |
92 | bool ignoreSignals = false; |
93 | |
94 | void _q_updateItemHeights(); |
95 | void _q_updateItemWidths(); |
96 | void _q_onViewCurrentIndexChanged(); |
97 | void _q_onViewCountChanged(); |
98 | void _q_onViewOffsetChanged(); |
99 | void _q_onViewContentYChanged(); |
100 | |
101 | void calculateDisplacements(); |
102 | |
103 | void disconnectFromView(); |
104 | void setupViewData(QQuickItem *newControlContentItem); |
105 | void warnAboutIncorrectContentItem(); |
106 | void syncCurrentIndex(); |
107 | void setPendingCurrentIndex(int index); |
108 | |
109 | enum PropertyChangeReason { |
110 | UserChange, |
111 | InternalChange |
112 | }; |
113 | |
114 | static QString propertyChangeReasonToString(PropertyChangeReason changeReason); |
115 | |
116 | void setCurrentIndex(int newCurrentIndex, PropertyChangeReason changeReason = InternalChange); |
117 | void setCount(int newCount); |
118 | void setWrapBasedOnCount(); |
119 | void setWrap(bool shouldWrap, bool isExplicit); |
120 | void beginSetModel(); |
121 | void endSetModel(); |
122 | |
123 | void itemChildAdded(QQuickItem *, QQuickItem *) override; |
124 | void itemChildRemoved(QQuickItem *, QQuickItem *) override; |
125 | void itemGeometryChanged(QQuickItem *, QQuickGeometryChange , const QRectF &) override; |
126 | }; |
127 | |
128 | class QQuickTumblerAttachedPrivate : public QObjectPrivate |
129 | { |
130 | Q_DECLARE_PUBLIC(QQuickTumblerAttached) |
131 | |
132 | public: |
133 | static QQuickTumblerAttachedPrivate *get(QQuickTumblerAttached *attached) |
134 | { |
135 | return attached->d_func(); |
136 | } |
137 | |
138 | void init(QQuickItem *delegateItem); |
139 | |
140 | void calculateDisplacement(); |
141 | void emitIfDisplacementChanged(qreal oldDisplacement, qreal newDisplacement); |
142 | |
143 | // The Tumbler that contains the delegate. Required to calculated the displacement. |
144 | QPointer<QQuickTumbler> tumbler; |
145 | // The index of the delegate. Used to calculate the displacement. |
146 | int index = -1; |
147 | // The displacement for our delegate. |
148 | qreal displacement = 0; |
149 | }; |
150 | |
151 | QT_END_NAMESPACE |
152 | |
153 | #endif // QQUICKTUMBLER_P_P_H |
154 | |