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39
40#ifndef QABSTRACTSLIDER_P_H
41#define QABSTRACTSLIDER_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 <QtWidgets/private/qtwidgetsglobal_p.h>
55#include "QtCore/qbasictimer.h"
56#include "QtCore/qelapsedtimer.h"
57#include "private/qwidget_p.h"
58#include "qstyle.h"
59
60QT_REQUIRE_CONFIG(abstractslider);
61
62QT_BEGIN_NAMESPACE
63
64class QAbstractSliderPrivate : public QWidgetPrivate
65{
66 Q_DECLARE_PUBLIC(QAbstractSlider)
67public:
68 QAbstractSliderPrivate();
69 ~QAbstractSliderPrivate();
70
71 void setSteps(int single, int page);
72
73 int minimum, maximum, pageStep, value, position, pressValue;
74
75 /**
76 * Call effectiveSingleStep() when changing the slider value.
77 */
78 int singleStep;
79 int singleStepFromItemView; // If we have itemViews we track the views preferred singleStep value.
80 bool viewMayChangeSingleStep;
81
82 float offset_accumulated;
83 uint tracking : 1;
84 uint blocktracking :1;
85 uint pressed : 1;
86 uint invertedAppearance : 1;
87 uint invertedControls : 1;
88 Qt::Orientation orientation;
89
90 QBasicTimer repeatActionTimer;
91 int repeatActionTime;
92 QAbstractSlider::SliderAction repeatAction;
93
94#ifdef QT_KEYPAD_NAVIGATION
95 int origValue;
96
97 /**
98 */
99 bool isAutoRepeating;
100
101 /**
102 * When we're auto repeating, we multiply singleStep with this value to
103 * get our effective step.
104 */
105 qreal repeatMultiplier;
106
107 /**
108 * The time of when the first auto repeating key press event occurs.
109 */
110 QElapsedTimer firstRepeat;
111
112#endif
113
114 inline int effectiveSingleStep() const
115 {
116 return singleStep
117#ifdef QT_KEYPAD_NAVIGATION
118 * repeatMultiplier
119#endif
120 ;
121 }
122 void itemviewChangeSingleStep(int step);
123
124 virtual int bound(int val) const { return qMax(minimum, qMin(maximum, val)); }
125 inline int overflowSafeAdd(int add) const
126 {
127 int newValue = value + add;
128 if (add > 0 && newValue < value)
129 newValue = maximum;
130 else if (add < 0 && newValue > value)
131 newValue = minimum;
132 return newValue;
133 }
134 inline void setAdjustedSliderPosition(int position)
135 {
136 Q_Q(QAbstractSlider);
137 if (q->style()->styleHint(QStyle::SH_Slider_StopMouseOverSlider, nullptr, q)) {
138 if ((position > pressValue - 2 * pageStep) && (position < pressValue + 2 * pageStep)) {
139 repeatAction = QAbstractSlider::SliderNoAction;
140 q->setSliderPosition(pressValue);
141 return;
142 }
143 }
144 q->triggerAction(repeatAction);
145 }
146 bool scrollByDelta(Qt::Orientation orientation, Qt::KeyboardModifiers modifiers, int delta);
147};
148
149QT_END_NAMESPACE
150
151#endif // QABSTRACTSLIDER_P_H
152