| 1 | /**************************************************************************** |
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| 2 | ** |
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| 3 | ** Copyright (C) 2016 Research In Motion. |
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| 4 | ** Contact: https://www.qt.io/licensing/ |
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| 5 | ** |
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| 6 | ** This file is part of the QtQml module of the Qt Toolkit. |
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| 7 | ** |
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$ |
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| 9 | ** Commercial License Usage |
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| 16 | ** |
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| 17 | ** GNU Lesser General Public License Usage |
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| 18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
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| 19 | ** General Public License version 3 as published by the Free Software |
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| 20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
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| 23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
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| 24 | ** |
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| 25 | ** GNU General Public License Usage |
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| 26 | ** Alternatively, this file may be used under the terms of the GNU |
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| 27 | ** General Public License version 2.0 or (at your option) the GNU General |
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| 28 | ** Public license version 3 or any later version approved by the KDE Free |
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| 35 | ** |
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| 36 | ** $QT_END_LICENSE$ |
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| 37 | ** |
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| 38 | ****************************************************************************/ |
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| 39 | |
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| 40 | #ifndef QQUICKFLICKABLEBEHAVIOR_H |
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| 41 | #define QQUICKFLICKABLEBEHAVIOR_H |
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| 42 | |
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| 43 | // |
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| 44 | // W A R N I N G |
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| 45 | // ------------- |
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| 46 | // |
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| 47 | // This file is not part of the Qt API. It exists purely as an |
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| 48 | // implementation detail. This header file may change from version to |
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| 49 | // version without notice, or even be removed. |
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| 50 | // |
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| 51 | // We mean it. |
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| 52 | // |
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| 53 | |
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| 54 | /* ### Platform specific flickable mechanics are defined either here, or in |
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| 55 | mkspec files. Long-term (QtQuick 3) Flickable needs to allow such |
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| 56 | mechanic details to be controlled via QML so that platforms can easily |
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| 57 | load custom behavior at QML compile time. |
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| 58 | */ |
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| 59 | |
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| 60 | // The maximum number of pixels a flick can overshoot |
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| 61 | #ifndef QML_FLICK_OVERSHOOT |
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| 62 | #define QML_FLICK_OVERSHOOT 150 |
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| 63 | #endif |
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| 64 | |
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| 65 | // The number of samples to use in calculating the velocity of a flick |
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| 66 | #ifndef QML_FLICK_SAMPLEBUFFER |
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| 67 | #define QML_FLICK_SAMPLEBUFFER 3 |
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| 68 | #endif |
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| 69 | |
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| 70 | // The number of samples to discard when calculating the flick velocity. |
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| 71 | // Touch panels often produce inaccurate results as the finger is lifted. |
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| 72 | #ifndef QML_FLICK_DISCARDSAMPLES |
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| 73 | #define QML_FLICK_DISCARDSAMPLES 0 |
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| 74 | #endif |
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| 75 | |
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| 76 | // The default maximum velocity of a flick. |
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| 77 | #ifndef QML_FLICK_DEFAULTMAXVELOCITY |
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| 78 | # define QML_FLICK_DEFAULTMAXVELOCITY 2500 |
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| 79 | #endif |
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| 80 | |
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| 81 | // The default deceleration of a flick. |
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| 82 | #ifndef QML_FLICK_DEFAULTDECELERATION |
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| 83 | # define QML_FLICK_DEFAULTDECELERATION 1500 |
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| 84 | #endif |
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| 85 | |
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| 86 | // How much faster to decelerate when overshooting |
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| 87 | #ifndef QML_FLICK_OVERSHOOTFRICTION |
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| 88 | #define QML_FLICK_OVERSHOOTFRICTION 8 |
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| 89 | #endif |
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| 90 | |
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| 91 | // Multiflick acceleration minimum flick velocity threshold |
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| 92 | #ifndef QML_FLICK_MULTIFLICK_THRESHOLD |
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| 93 | #define QML_FLICK_MULTIFLICK_THRESHOLD 1250 |
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| 94 | #endif |
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| 95 | |
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| 96 | // If the time (ms) between the last move and the release exceeds this, then velocity will be zero. |
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| 97 | #ifndef QML_FLICK_VELOCITY_DECAY_TIME |
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| 98 | #define QML_FLICK_VELOCITY_DECAY_TIME 50 |
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| 99 | #endif |
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| 100 | |
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| 101 | // Multiflick acceleration minimum contentSize/viewSize ratio |
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| 102 | #ifndef QML_FLICK_MULTIFLICK_RATIO |
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| 103 | #define QML_FLICK_MULTIFLICK_RATIO 10 |
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| 104 | #endif |
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| 105 | |
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| 106 | // Multiflick acceleration maximum velocity multiplier |
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| 107 | #ifndef QML_FLICK_MULTIFLICK_MAXBOOST |
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| 108 | #define QML_FLICK_MULTIFLICK_MAXBOOST 3.0 |
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| 109 | #endif |
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| 110 | |
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| 111 | #endif //QQUICKFLICKABLEBEHAVIOR_H |
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| 112 | |
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