1 /* 2 * Copyright (C) 2007, 2008, 2009, 2010 Apple, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef QTMovieTask_h 27 #define QTMovieTask_h 28 29 #include <WTF/HashSet.h> 30 31 #ifdef QTMOVIEWIN_EXPORTS 32 #define QTMOVIEWIN_API __declspec(dllexport) 33 #else 34 #define QTMOVIEWIN_API __declspec(dllimport) 35 #endif 36 37 class QTMovieTaskClient { 38 public: 39 virtual void task() = 0; 40 }; 41 42 typedef void (*SetTaskTimerDelayFunc)(double); 43 typedef void (*StopTaskTimerFunc)(); 44 45 class QTMOVIEWIN_API QTMovieTask { 46 public: 47 static QTMovieTask* sharedTask(); 48 49 void addTaskClient(QTMovieTaskClient* client); 50 void removeTaskClient(QTMovieTaskClient*); 51 void fireTaskClients(); 52 53 void updateTaskTimer(double maxInterval = 1.0, double minInterval = 1.0 / 30); 54 void setTaskTimerFuncs(SetTaskTimerDelayFunc setTaskTimerDelay, StopTaskTimerFunc stopTaskTimer); 55 56 protected: 57 QTMovieTask(); 58 ~QTMovieTask(); 59 60 SetTaskTimerDelayFunc m_setTaskTimerDelay; 61 StopTaskTimerFunc m_stopTaskTimer; 62 HashSet<QTMovieTaskClient*> m_taskList; 63 64 private: 65 QTMovieTask(const QTMovieTask&); 66 QTMovieTask& operator=(const QTMovieTask&); 67 }; 68 69 #endif 70
