1 files changed, 116 insertions, 0 deletions
diff --git a/src/imports/controls/qquickdialring.cpp b/src/imports/controls/qquickdialring.cpp
new file mode 100644
index 00000000..b00e67d8
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+++ b/src/imports/controls/qquickdialring.cpp
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Labs Controls module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** 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
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickdialring_p.h"
+
+#include <QtCore/qmath.h>
+#include <QtGui/qpainter.h>
+#include <QtQuick/private/qquickitem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QQuickDialRing::QQuickDialRing(QQuickItem *parent) :
+    QQuickPaintedItem(parent),
+    m_progress(0),
+    m_color(Qt::black)
+{
+}
+
+qreal QQuickDialRing::progress() const
+{
+    return m_progress;
+}
+
+void QQuickDialRing::setProgress(qreal progress)
+{
+    if (progress == m_progress)
+        return;
+
+    m_progress = progress;
+    update();
+    emit progressChanged();
+}
+
+QColor QQuickDialRing::color() const
+{
+    return m_color;
+}
+
+void QQuickDialRing::setColor(const QColor &color)
+{
+    if (color == m_color)
+        return;
+
+    m_color = color;
+    update();
+    emit colorChanged();
+}
+
+void QQuickDialRing::paint(QPainter *painter)
+{
+    if (width() <= 0 || height() <= 0)
+        return;
+
+    QPen pen(m_color);
+    pen.setWidth(8);
+    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);
+
+    // 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 = (140 + 90) * 16;
+    const qreal spanAngle = (m_progress * 280) * -16;
+    painter->drawArc(rect, startAngle, spanAngle);
+
+    pen.setWidth(1);
+    painter->setPen(pen);
+    painter->drawArc(QRect(1, 1, width() - 2, height() - 2), 0, 360 * 16);
+}
+
+QT_END_NAMESPACE