File indexing completed on 2024-05-12 17:24:09

 // SPDX-FileCopyrightText: 2023 Carl Schwan <carl@carlschwan.eu>
 // SPDX-License-Identifier: MIT
 
 #include "colorgradientinterpolator.h"
 #include <QtQml>
 
 constexpr int stepCount = 1000;
 
 ColorGradientInterpolator::ColorGradientInterpolator(QObject *parent)
     : QObject(parent)
 {
     m_gradient.setEasingCurve(QEasingCurve::Linear);
     m_gradient.setDuration(stepCount);
 
     connect(this, &ColorGradientInterpolator::progressChanged,
             this, &ColorGradientInterpolator::colorChanged);
     connect(this, &ColorGradientInterpolator::gradientStopsChanged,
             this, &ColorGradientInterpolator::colorChanged);
 }
 
 QColor ColorGradientInterpolator::color() const
 {
     return m_gradient.currentValue().value<QColor>();
 }
 
 double ColorGradientInterpolator::progress() const
 {
     return m_progress;
 }
 
 void ColorGradientInterpolator::setProgress(const double progress)
 {
     const auto boundedProgress = qBound(0.0, progress, 1.0);
 
     if (boundedProgress == m_progress) {
         return;
     }
 
     m_progress = boundedProgress;
     m_gradient.setCurrentTime(m_progress * stepCount);
     Q_EMIT progressChanged();
 }
 
 QVariantList ColorGradientInterpolator::gradientStops() const
 {
     return {};
 }
 
 void ColorGradientInterpolator::setGradientStops(const QVariantList &gradientStops)
 {
     QVariantAnimation::KeyValues keyValues;
     for (const auto &gradientStop : gradientStops) {
         const auto map = gradientStop.toMap();
         bool ok = true;
         auto position = map[QStringLiteral("position")].toFloat(&ok);
         if (position > 1.0 || position < 0.0 || !ok) {
             qmlWarning(this) << "Invalid position given" << map[QStringLiteral("position")];
         }
 
         auto color = QColor(map[QStringLiteral("color")].toString());
         if (!color.isValid()) {
             qmlWarning(this) << "Invalid color given" << map[QStringLiteral("color")];
         }
 
         keyValues.append({ position, color });
     }
 
     m_gradient.setKeyValues(keyValues);
     Q_EMIT gradientStopsChanged();
 }