| 1 | // Copyright (C) 2025 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qquickcoloropacityanimation_p.h" |
| 5 | |
| 6 | #include <QtQuick/private/qquickanimation_p_p.h> |
| 7 | |
| 8 | QT_BEGIN_NAMESPACE |
| 9 | |
| 10 | /*! |
| 11 | \qmlmodule QtQuick.VectorImage.Helpers |
| 12 | \title Qt Quick Vector Image Helpers QML Types |
| 13 | \ingroup qmlmodules |
| 14 | \brief Provides QML types used by VectorImage and related tools. |
| 15 | \since 6.10 |
| 16 | |
| 17 | This module contains types used in scenes generated by \l{VectorImage}, \l{svgtoqml} and related |
| 18 | tools. The types are made to replicate specialized behavior defined by the vector graphics file |
| 19 | formats it loads and are not intended to be generally useful. |
| 20 | |
| 21 | To use the types in this module, import the module with the following line: |
| 22 | |
| 23 | \qml |
| 24 | import QtQuick.VectorImage.Helpers |
| 25 | \endqml |
| 26 | |
| 27 | \section1 QML Types |
| 28 | */ |
| 29 | |
| 30 | static QVariant opacityInterpolator(const QColor &from, |
| 31 | const QColor &to, |
| 32 | const QVariant ¤t, |
| 33 | qreal progress) |
| 34 | { |
| 35 | QColor color = current.value<QColor>(); |
| 36 | |
| 37 | qreal fromAlpha = from.alphaF(); |
| 38 | qreal toAlpha = to.alphaF(); |
| 39 | |
| 40 | color.setAlphaF(fromAlpha + (toAlpha - fromAlpha) * progress); |
| 41 | return QVariant::fromValue(value: color); |
| 42 | } |
| 43 | |
| 44 | /*! |
| 45 | \qmltype ColorOpacityAnimation |
| 46 | \inqmlmodule QtQuick.VectorImage.Helpers |
| 47 | \inherits Item |
| 48 | \brief Animates the alpha value of a color without modifying the rest of the color. |
| 49 | |
| 50 | This type will animate the alpha value of a color without modifying the other components. It |
| 51 | is used to support the \c fill-opacity and \c stroke-opacity properties of SVG, which can be |
| 52 | animated separately from the opacity of the shape itself. |
| 53 | */ |
| 54 | QQuickColorOpacityAnimation::QQuickColorOpacityAnimation(QObject *parent) |
| 55 | : QQuickPropertyAnimation(parent) |
| 56 | { |
| 57 | Q_D(QQuickPropertyAnimation); |
| 58 | d->defaultToInterpolatorType = true; |
| 59 | d->interpolatorType = QMetaType::QColor; |
| 60 | d->extendedInterpolator = reinterpret_cast<QQuickPropertyAnimationPrivate::ExtendedInterpolator>(reinterpret_cast<void(*)()>(opacityInterpolator)); |
| 61 | } |
| 62 | |
| 63 | /*! |
| 64 | \qmlproperty real QtQuick.VectorImage.Helpers::ColorOpacityAnimation::from |
| 65 | |
| 66 | The value of the color's alpha channel at the start of the animation. |
| 67 | */ |
| 68 | qreal QQuickColorOpacityAnimation::from() const |
| 69 | { |
| 70 | Q_D(const QQuickPropertyAnimation); |
| 71 | return d->from.value<QColor>().alphaF(); |
| 72 | } |
| 73 | |
| 74 | void QQuickColorOpacityAnimation::setFrom(qreal from) |
| 75 | { |
| 76 | QColor color = Qt::red; |
| 77 | color.setAlphaF(from); |
| 78 | |
| 79 | QQuickPropertyAnimation::setFrom(color); |
| 80 | } |
| 81 | |
| 82 | /*! |
| 83 | \qmlproperty real QtQuick.VectorImage.Helpers::ColorOpacityAnimation::to |
| 84 | |
| 85 | The value of the color's alpha channel at the end of the animation. |
| 86 | */ |
| 87 | qreal QQuickColorOpacityAnimation::to() const |
| 88 | { |
| 89 | Q_D(const QQuickPropertyAnimation); |
| 90 | return d->to.value<QColor>().alphaF(); |
| 91 | } |
| 92 | |
| 93 | void QQuickColorOpacityAnimation::setTo(qreal to) |
| 94 | { |
| 95 | QColor color = Qt::yellow; |
| 96 | color.setAlphaF(to); |
| 97 | |
| 98 | QQuickPropertyAnimation::setTo(color); |
| 99 | } |
| 100 | |
| 101 | QT_END_NAMESPACE |
| 102 | |
| 103 | #include <moc_qquickcoloropacityanimation_p.cpp> |
| 104 |