1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the demonstration applications of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL21$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** $QT_END_LICENSE$ 31 ** 32 ****************************************************************************/ 33 34 #ifndef CHASEWIDGET_H 35 #define CHASEWIDGET_H 36 37 #include <QtWidgets/QWidget> 38 39 #include <QtCore/QSize> 40 #include <QtGui/QColor> 41 #include <QtGui/QPixmap> 42 43 QT_BEGIN_NAMESPACE 44 class QHideEvent; 45 class QShowEvent; 46 class QPaintEvent; 47 class QTimerEvent; 48 QT_END_NAMESPACE 49 50 class ChaseWidget : public QWidget 51 { 52 Q_OBJECT 53 public: 54 ChaseWidget(QWidget *parent = 0, QPixmap pixmap = QPixmap(), bool pixmapEnabled = false); 55 56 void setAnimated(bool value); 57 void setPixmapEnabled(bool enable); 58 QSize sizeHint() const; 59 60 protected: 61 void paintEvent(QPaintEvent *event); 62 void timerEvent(QTimerEvent *event); 63 64 private: 65 int segmentCount() const; 66 QColor colorForSegment(int segment) const; 67 68 int m_segment; 69 int m_delay; 70 int m_step; 71 int m_timerId; 72 bool m_animated; 73 QPixmap m_pixmap; 74 bool m_pixmapEnabled; 75 }; 76 77 #endif 78