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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"