Utils: Add round progress indicator widget

Change-Id: Ia3a51fb99ae6cec1b7b3c135d272e92d503128dc Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
2015-01-12 15:44:53 +01:00
parent bab7794a0d
commit 5e60848942
10 changed files with 410 additions and 0 deletions
--- a/src/libs/utils/progressindicator.cpp
+++ b/src/libs/utils/progressindicator.cpp
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://www.qt.io/licensing.  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 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "progressindicator.h"
+#include "stylehelper.h"
+
+#include <QPainter>
+#include <QPixmap>
+
+using namespace Utils;
+
+ProgressIndicator::ProgressIndicator(Size size, QWidget *parent)
+    : QWidget(parent),
+      m_rotation(0)
+{
+    setAttribute(Qt::WA_TransparentForMouseEvents);
+    m_size = size;
+    m_rotationStep = size == Small ? 45 : 30;
+    m_pixmap.load(StyleHelper::dpiSpecificImageFile(
+                      size == Small ? QLatin1String(":/utils/images/progressindicator_small.png")
+                                    : QLatin1String(":/utils/images/progressindicator_big.png")));
+    m_timer.setInterval(size == Small ? 100 : 80);
+    m_timer.setSingleShot(false);
+    connect(&m_timer, &QTimer::timeout, this, &ProgressIndicator::step);
+}
+
+QSize ProgressIndicator::sizeHint() const
+{
+    return m_pixmap.size() / m_pixmap.devicePixelRatio();
+}
+
+void ProgressIndicator::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.setRenderHint(QPainter::SmoothPixmapTransform);
+    QPoint translate(rect().width() / 2, rect().height() / 2);
+    QTransform t;
+    t.translate(translate.x(), translate.y());
+    t.rotate(m_rotation);
+    t.translate(-translate.x(), -translate.y());
+    p.setTransform(t);
+    QSize pixmapUserSize(m_pixmap.size() / m_pixmap.devicePixelRatio());
+    p.drawPixmap(QPoint((rect().width() - pixmapUserSize.width()) / 2,
+                       (rect().height() - pixmapUserSize.height()) / 2),
+                 m_pixmap);
+}
+
+void ProgressIndicator::showEvent(QShowEvent *)
+{
+    m_timer.start();
+}
+
+void ProgressIndicator::hideEvent(QHideEvent *)
+{
+    m_timer.stop();
+}
+
+void ProgressIndicator::step()
+{
+    m_rotation = (m_rotation + m_rotationStep + 360) % 360;
+    update();
+}
+