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39 | |
40 | #ifndef QVARIANTANIMATION_P_H |
41 | #define QVARIANTANIMATION_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 "qvariantanimation.h" |
55 | #include <QtCore/qeasingcurve.h> |
56 | #include <QtCore/qmetaobject.h> |
57 | #include <QtCore/qvector.h> |
58 | |
59 | #include "private/qabstractanimation_p.h" |
60 | |
61 | #include <type_traits> |
62 | |
63 | QT_REQUIRE_CONFIG(animation); |
64 | |
65 | QT_BEGIN_NAMESPACE |
66 | |
67 | class QVariantAnimationPrivate : public QAbstractAnimationPrivate |
68 | { |
69 | Q_DECLARE_PUBLIC(QVariantAnimation) |
70 | public: |
71 | |
72 | QVariantAnimationPrivate(); |
73 | |
74 | static QVariantAnimationPrivate *get(QVariantAnimation *q) |
75 | { |
76 | return q->d_func(); |
77 | } |
78 | |
79 | void setDefaultStartEndValue(const QVariant &value); |
80 | |
81 | |
82 | QVariant currentValue; |
83 | QVariant defaultStartEndValue; |
84 | |
85 | //this is used to keep track of the KeyValue interval in which we currently are |
86 | struct |
87 | { |
88 | QVariantAnimation::KeyValue start, end; |
89 | } currentInterval; |
90 | |
91 | QEasingCurve easing; |
92 | int duration; |
93 | QVariantAnimation::KeyValues keyValues; |
94 | QVariantAnimation::Interpolator interpolator; |
95 | |
96 | void setCurrentValueForProgress(const qreal progress); |
97 | void recalculateCurrentInterval(bool force=false); |
98 | void setValueAt(qreal, const QVariant &); |
99 | QVariant valueAt(qreal step) const; |
100 | void convertValues(int t); |
101 | |
102 | void updateInterpolator(); |
103 | |
104 | //XXX this is needed by dui |
105 | static Q_CORE_EXPORT QVariantAnimation::Interpolator getInterpolator(int interpolationType); |
106 | }; |
107 | |
108 | //this should make the interpolation faster |
109 | template<typename T> |
110 | typename std::enable_if<std::is_unsigned<T>::value, T>::type |
111 | _q_interpolate(const T &f, const T &t, qreal progress) |
112 | { |
113 | return T(f + t * progress - f * progress); |
114 | } |
115 | |
116 | // the below will apply also to all non-arithmetic types |
117 | template<typename T> |
118 | typename std::enable_if<!std::is_unsigned<T>::value, T>::type |
119 | _q_interpolate(const T &f, const T &t, qreal progress) |
120 | { |
121 | return T(f + (t - f) * progress); |
122 | } |
123 | |
124 | template<typename T > inline QVariant _q_interpolateVariant(const T &from, const T &to, qreal progress) |
125 | { |
126 | return _q_interpolate(from, to, progress); |
127 | } |
128 | |
129 | |
130 | QT_END_NAMESPACE |
131 | |
132 | #endif //QVARIANTANIMATION_P_H |
133 | |