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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
#include "qquickfusionbusyindicator_p.h"
#include <QtGui/qpainter.h>
QT_BEGIN_NAMESPACE
QQuickFusionBusyIndicator::QQuickFusionBusyIndicator(QQuickItem *parent)
: QQuickPaintedItem(parent)
{
}
QColor QQuickFusionBusyIndicator::color() const
{
return m_color;
}
void QQuickFusionBusyIndicator::setColor(const QColor &color)
{
if (color == m_color)
return;
m_color = color;
update();
}
bool QQuickFusionBusyIndicator::isRunning() const
{
return isVisible();
}
void QQuickFusionBusyIndicator::setRunning(bool running)
{
m_running = running;
if (m_running) {
setVisible(true);
update();
}
// Don't set visible to false if not running, because we use an opacity animation (in QML) to hide ourselves.
}
void QQuickFusionBusyIndicator::paint(QPainter *painter)
{
const qreal w = width();
const qreal h = height();
if (w <= 0 || h <= 0 || !isRunning())
return;
const qreal sz = qMin(w, h);
const qreal dx = (w - sz) / 2;
const qreal dy = (h - sz) / 2;
const int hpw = qRound(qMax(qreal(1), sz / 14)) & -1;
const int pw = 2 * hpw;
const QRectF bounds(dx + hpw, dy + hpw, sz - pw - 1, sz - pw - 1);
QConicalGradient gradient;
gradient.setCenter(QPointF(dx + sz / 2, dy + sz / 2));
gradient.setColorAt(0, m_color);
gradient.setColorAt(0.1, m_color);
gradient.setColorAt(1, Qt::transparent);
painter->translate(0.5, 0.5);
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setPen(QPen(gradient, pw, Qt::SolidLine));
painter->drawArc(bounds, 0, 360 * 16);
painter->setPen(QPen(m_color, pw, Qt::SolidLine, Qt::RoundCap));
painter->drawArc(bounds, 0, 20 * 16);
}
void QQuickFusionBusyIndicator::itemChange(ItemChange change, const ItemChangeData &data)
{
QQuickPaintedItem::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;
}
}
QT_END_NAMESPACE
#include "moc_qquickfusionbusyindicator_p.cpp"
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