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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 "qquickbasicdial_p.h"
#include <QtCore/qmath.h>
#include <QtGui/qpainter.h>
#include <QtGui/qpainterpath.h>
#include <QtQuick/private/qquickitem_p.h>
QT_BEGIN_NAMESPACE
QQuickBasicDial::QQuickBasicDial(QQuickItem *parent) :
QQuickPaintedItem(parent)
{
}
qreal QQuickBasicDial::progress() const
{
return m_progress;
}
void QQuickBasicDial::setProgress(qreal progress)
{
if (progress == m_progress)
return;
m_progress = progress;
update();
}
qreal QQuickBasicDial::startAngle() const
{
return m_startAngle;
}
void QQuickBasicDial::setStartAngle(qreal startAngle)
{
if (startAngle == m_startAngle)
return;
m_startAngle = startAngle;
update();
}
qreal QQuickBasicDial::endAngle() const
{
return m_endAngle;
}
void QQuickBasicDial::setEndAngle(qreal endAngle)
{
if (endAngle == m_endAngle)
return;
m_endAngle = endAngle;
update();
}
QColor QQuickBasicDial::color() const
{
return m_color;
}
void QQuickBasicDial::setColor(const QColor &color)
{
if (color == m_color)
return;
m_color = color;
update();
}
void QQuickBasicDial::paint(QPainter *painter)
{
if (width() <= 0 || height() <= 0)
return;
QPen pen(m_color);
pen.setWidth(8);
pen.setCapStyle(Qt::FlatCap);
painter->setPen(pen);
const QRectF bounds = boundingRect();
const qreal smallest = qMin(bounds.width(), bounds.height());
QRectF rect = QRectF(pen.widthF() / 2.0 + 1, pen.widthF() / 2.0 + 1, smallest - pen.widthF() - 2, smallest - pen.widthF() - 2);
rect.moveCenter(bounds.center());
// Make sure the arc is aligned to whole pixels.
if (rect.x() - int(rect.x()) > 0)
rect.setX(qCeil(rect.x()));
if (rect.y() - int(rect.y()) > 0)
rect.setY(qCeil(rect.y()));
if (rect.width() - int(rect.width()) > 0)
rect.setWidth(qFloor(rect.width()));
if (rect.height() - int(rect.height()) > 0)
rect.setHeight(qFloor(rect.height()));
painter->setRenderHint(QPainter::Antialiasing);
const qreal startAngle = 90. - m_startAngle;
const qreal spanAngle = m_progress * (m_startAngle - m_endAngle);
QPainterPath path;
path.arcMoveTo(rect, startAngle);
path.arcTo(rect, startAngle, spanAngle);
painter->drawPath(path);
rect.adjust(-pen.widthF() / 2.0, -pen.widthF() / 2.0, pen.widthF() / 2.0, pen.widthF() / 2.0);
pen.setWidth(1);
painter->setPen(pen);
path = QPainterPath();
path.arcMoveTo(rect, 0);
path.arcTo(rect, 0, 360);
painter->drawPath(path);
}
QT_END_NAMESPACE
#include "moc_qquickbasicdial_p.cpp"
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