| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL3$ |
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| ** GNU Lesser General Public License Usage |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or later as published by the Free |
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| ****************************************************************************/ |
| |
| #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) |
| { |
| if (running) { |
| setVisible(true); |
| update(); |
| } |
| } |
| |
| 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); |
| |
| if (change == ItemOpacityHasChanged && qFuzzyIsNull(data.realValue)) |
| setVisible(false); |
| } |
| |
| QT_END_NAMESPACE |