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36
37#ifndef QQUICKSCROLLBAR_P_P_H
38#define QQUICKSCROLLBAR_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/qquickscrollbar_p.h>
52#include <QtQuickTemplates2/private/qquickcontrol_p_p.h>
53#include <QtQuick/private/qquickitemchangelistener_p.h>
54
55QT_BEGIN_NAMESPACE
56
57class QQuickFlickable;
58
59class QQuickScrollBarPrivate : public QQuickControlPrivate
60{
61 Q_DECLARE_PUBLIC(QQuickScrollBar)
62
63public:
64 static QQuickScrollBarPrivate *get(QQuickScrollBar *bar)
65 {
66 return bar->d_func();
67 }
68
69 struct VisualArea
70 {
71 VisualArea(qreal pos, qreal sz)
72 : position(pos), size(sz) { }
73 qreal position = 0;
74 qreal size = 0;
75 };
76 VisualArea visualArea() const;
77
78 qreal logicalPosition(qreal position) const;
79
80 qreal snapPosition(qreal position) const;
81 qreal positionAt(const QPointF &point) const;
82 void setInteractive(bool interactive);
83 void updateActive();
84 void resizeContent() override;
85
86 void handlePress(const QPointF &point) override;
87 void handleMove(const QPointF &point) override;
88 void handleRelease(const QPointF &point) override;
89 void handleUngrab() override;
90
91 void visualAreaChange(const VisualArea &newVisualArea, const VisualArea &oldVisualArea);
92
93 qreal size = 0;
94 qreal position = 0;
95 qreal stepSize = 0;
96 qreal offset = 0;
97 qreal minimumSize = 0;
98 bool active = false;
99 bool pressed = false;
100 bool moving = false;
101 bool interactive = true;
102 bool explicitInteractive = false;
103 Qt::Orientation orientation = Qt::Vertical;
104 QQuickScrollBar::SnapMode snapMode = QQuickScrollBar::NoSnap;
105 QQuickScrollBar::Policy policy = QQuickScrollBar::AsNeeded;
106};
107
108class QQuickScrollBarAttachedPrivate : public QObjectPrivate, public QQuickItemChangeListener
109{
110public:
111 static QQuickScrollBarAttachedPrivate *get(QQuickScrollBarAttached *attached)
112 {
113 return attached->d_func();
114 }
115
116 void setFlickable(QQuickFlickable *flickable);
117
118 void initHorizontal();
119 void initVertical();
120 void cleanupHorizontal();
121 void cleanupVertical();
122 void activateHorizontal();
123 void activateVertical();
124 void scrollHorizontal();
125 void scrollVertical();
126 void mirrorVertical();
127
128 void layoutHorizontal(bool move = true);
129 void layoutVertical(bool move = true);
130
131 void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &diff) override;
132 void itemImplicitWidthChanged(QQuickItem *item) override;
133 void itemImplicitHeightChanged(QQuickItem *item) override;
134 void itemDestroyed(QQuickItem *item) override;
135
136 QQuickFlickable *flickable = nullptr;
137 QQuickScrollBar *horizontal = nullptr;
138 QQuickScrollBar *vertical = nullptr;
139};
140
141QT_END_NAMESPACE
142
143#endif // QQUICKSCROLLBAR_P_P_H
144

source code of qtquickcontrols2/src/quicktemplates2/qquickscrollbar_p_p.h