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 examples of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:BSD$ 9 ** You may use this file under the terms of the BSD license as follows: 10 ** 11 ** "Redistribution and use in source and binary forms, with or without 12 ** modification, are permitted provided that the following conditions are 13 ** met: 14 ** * Redistributions of source code must retain the above copyright 15 ** notice, this list of conditions and the following disclaimer. 16 ** * Redistributions in binary form must reproduce the above copyright 17 ** notice, this list of conditions and the following disclaimer in 18 ** the documentation and/or other materials provided with the 19 ** distribution. 20 ** * Neither the name of The Qt Company Ltd nor the names of its 21 ** contributors may be used to endorse or promote products derived 22 ** from this software without specific prior written permission. 23 ** 24 ** 25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 36 ** 37 ** $QT_END_LICENSE$ 38 ** 39 ****************************************************************************/ 40 41 #ifndef RENDERTHREAD_H 42 #define RENDERTHREAD_H 43 44 #include <QMutex> 45 #include <QSize> 46 #include <QThread> 47 #include <QWaitCondition> 48 49 QT_BEGIN_NAMESPACE 50 class QImage; 51 QT_END_NAMESPACE 52 53 //! [0] 54 class RenderThread : public QThread 55 { 56 Q_OBJECT 57 58 public: 59 RenderThread(QObject *parent = 0); 60 ~RenderThread(); 61 62 void render(double centerX, double centerY, double scaleFactor, 63 QSize resultSize); 64 65 signals: 66 void renderedImage(const QImage &image, double scaleFactor); 67 68 protected: 69 void run(); 70 71 private: 72 uint rgbFromWaveLength(double wave); 73 74 QMutex mutex; 75 QWaitCondition condition; 76 double centerX; 77 double centerY; 78 double scaleFactor; 79 QSize resultSize; 80 bool restart; 81 bool abort; 82 83 enum { ColormapSize = 512 }; 84 uint colormap[ColormapSize]; 85 }; 86 //! [0] 87 88 #endif 89