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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #include "qquickbasicbusyindicator_p.h"
++
++ #include <QtQuick/private/qquickitem_p.h>
++ #include <QtQuick/private/qsgadaptationlayer_p.h>
++ #include <QtQuickControls2Impl/private/qquickanimatednode_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ static const int CircleCount = 10;
++ static const int QbbiTotalDuration = 100 * CircleCount * 2;
++ static const QRgb TransparentColor = 0x00000000;
++
++ static QPointF moveCircle(const QPointF &pos, qreal rotation, qreal distance)
++ {
++ return pos - QTransform().rotate(rotation).map(QPointF(0, distance));
++ }
++
++ class QQuickBasicBusyIndicatorNode : public QQuickAnimatedNode
++ {
++ public:
++ QQuickBasicBusyIndicatorNode(QQuickBasicBusyIndicator *item);
++
++ void updateCurrentTime(int time) override;
++ void sync(QQuickItem *item) override;
++
++ private:
++ QColor m_pen;
++ QColor m_fill;
++ };
++
++ QQuickBasicBusyIndicatorNode::QQuickBasicBusyIndicatorNode(QQuickBasicBusyIndicator *item)
++ : QQuickAnimatedNode(item)
++ {
++ setLoopCount(Infinite);
++ setDuration(QbbiTotalDuration);
++ setCurrentTime(item->elapsed());
++
++ for (int i = 0; i < CircleCount; ++i) {
++ QSGTransformNode *transformNode = new QSGTransformNode;
++ appendChildNode(transformNode);
++
++ QQuickItemPrivate *d = QQuickItemPrivate::get(item);
++ QSGInternalRectangleNode *rectNode = d->sceneGraphContext()->createInternalRectangleNode();
++ rectNode->setAntialiasing(true);
++ transformNode->appendChildNode(rectNode);
++ }
++ }
++
++ void QQuickBasicBusyIndicatorNode::updateCurrentTime(int time)
++ {
++ const qreal percentageComplete = time / qreal(QbbiTotalDuration);
++ const qreal firstPhaseProgress = percentageComplete <= 0.5 ? percentageComplete * 2 : 0;
++ const qreal secondPhaseProgress = percentageComplete > 0.5 ? (percentageComplete - 0.5) * 2 : 0;
++
++ QSGTransformNode *transformNode = static_cast<QSGTransformNode*>(firstChild());
++ Q_ASSERT(transformNode->type() == QSGNode::TransformNodeType);
++ for (int i = 0; i < CircleCount; ++i) {
++ QSGInternalRectangleNode *rectNode = static_cast<QSGInternalRectangleNode*>(transformNode->firstChild());
++ Q_ASSERT(rectNode->type() == QSGNode::GeometryNodeType);
++
++ const bool fill = (firstPhaseProgress > qreal(i) / CircleCount) || (secondPhaseProgress > 0 && secondPhaseProgress < qreal(i) / CircleCount);
++ rectNode->setColor(fill ? m_fill : QColor::fromRgba(TransparentColor));
++ rectNode->setPenColor(m_pen);
++ rectNode->setPenWidth(1);
++ rectNode->update();
++
++ transformNode = static_cast<QSGTransformNode*>(transformNode->nextSibling());
++ }
++ }
++
++ void QQuickBasicBusyIndicatorNode::sync(QQuickItem *item)
++ {
++ const qreal w = item->width();
++ const qreal h = item->height();
++ const qreal sz = qMin(w, h);
++ const qreal dx = (w - sz) / 2;
++ const qreal dy = (h - sz) / 2;
++ const int circleRadius = sz / 12;
++
++ m_pen = static_cast<QQuickBasicBusyIndicator *>(item)->pen();
++ m_fill = static_cast<QQuickBasicBusyIndicator *>(item)->fill();
++
++ QSGTransformNode *transformNode = static_cast<QSGTransformNode *>(firstChild());
++ for (int i = 0; i < CircleCount; ++i) {
++ Q_ASSERT(transformNode->type() == QSGNode::TransformNodeType);
++
++ QSGInternalRectangleNode *rectNode = static_cast<QSGInternalRectangleNode *>(transformNode->firstChild());
++ Q_ASSERT(rectNode->type() == QSGNode::GeometryNodeType);
++
++ QPointF pos = QPointF(sz / 2 - circleRadius, sz / 2 - circleRadius);
++ pos = moveCircle(pos, 360.0 / CircleCount * i, sz / 2 - circleRadius);
++
++ QMatrix4x4 m;
++ m.translate(dx + pos.x(), dy + pos.y());
++ transformNode->setMatrix(m);
++
++ rectNode->setRect(QRectF(QPointF(), QSizeF(circleRadius * 2, circleRadius * 2)));
++ rectNode->setRadius(circleRadius);
++
++ transformNode = static_cast<QSGTransformNode *>(transformNode->nextSibling());
++ }
++ }
++
++ QQuickBasicBusyIndicator::QQuickBasicBusyIndicator(QQuickItem *parent) :
++ QQuickItem(parent)
++ {
++ setFlag(ItemHasContents);
++ }
++
++ QColor QQuickBasicBusyIndicator::pen() const
++ {
++ return m_pen;
++ }
++
++ void QQuickBasicBusyIndicator::setPen(const QColor &pen)
++ {
++ if (pen == m_pen)
++ return;
++
++ m_pen = pen;
++ update();
++ }
++
++ QColor QQuickBasicBusyIndicator::fill() const
++ {
++ return m_fill;
++ }
++
++ void QQuickBasicBusyIndicator::setFill(const QColor &fill)
++ {
++ if (fill == m_fill)
++ return;
++
++ m_fill = fill;
++ update();
++ }
++
++ bool QQuickBasicBusyIndicator::isRunning() const
++ {
++ return isVisible();
++ }
++
++ void QQuickBasicBusyIndicator::setRunning(bool running)
++ {
++ m_running = running;
++
++ if (m_running)
++ setVisible(true);
++ // Don't set visible to false if not running, because we use an opacity animation (in QML) to hide ourselves.
++ }
++
++ int QQuickBasicBusyIndicator::elapsed() const
++ {
++ return m_elapsed;
++ }
++
++ void QQuickBasicBusyIndicator::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &data)
++ {
++ QQuickItem::itemChange(change, data);
++ switch (change) {
++ case ItemOpacityHasChanged:
++ // If running is set to false and then true within a short period (QTBUG-85860), our
++ // OpacityAnimator cancels the 1 => 0 animation (which was for running being set to false),
++ // setting opacity to 0 and hence visible to false. This happens _after_ setRunning(true)
++ // was called, because the properties were set synchronously but the animation is
++ // asynchronous. To account for this situation, we only hide ourselves if we're not running.
++ if (qFuzzyIsNull(data.realValue) && !m_running)
++ setVisible(false);
++ break;
++ case ItemVisibleHasChanged:
++ update();
++ break;
++ default:
++ break;
++ }
++ }
++
++ QSGNode *QQuickBasicBusyIndicator::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
++ {
++ QQuickBasicBusyIndicatorNode *node = static_cast<QQuickBasicBusyIndicatorNode *>(oldNode);
++ if (isRunning() && width() > 0 && height() > 0) {
++ if (!node) {
++ node = new QQuickBasicBusyIndicatorNode(this);
++ node->start();
++ }
++ node->sync(this);
++ } else {
++ m_elapsed = node ? node->currentTime() : 0;
++ delete node;
++ node = nullptr;
++ }
++ return node;
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_qquickbasicbusyindicator_p.cpp"