1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski 24*b1cdbd2cSJim Jagielski #include "precompiled_sd.hxx" 25*b1cdbd2cSJim Jagielski 26*b1cdbd2cSJim Jagielski #include "slideshow.hxx" 27*b1cdbd2cSJim Jagielski #include "ViewShellBase.hxx" 28*b1cdbd2cSJim Jagielski #include <rtl/ref.hxx> 29*b1cdbd2cSJim Jagielski #include <tools/link.hxx> 30*b1cdbd2cSJim Jagielski #include <boost/enable_shared_from_this.hpp> 31*b1cdbd2cSJim Jagielski 32*b1cdbd2cSJim Jagielski namespace sd { 33*b1cdbd2cSJim Jagielski 34*b1cdbd2cSJim Jagielski /** This class is used when a display is removed or added to restart the 35*b1cdbd2cSJim Jagielski slide show. This is necessary at least with DirectX because 36*b1cdbd2cSJim Jagielski deactivating a display invalidates DirectX resources. Accessing those 37*b1cdbd2cSJim Jagielski leads to a crash. 38*b1cdbd2cSJim Jagielski 39*b1cdbd2cSJim Jagielski During a restart a possibly installed presenter extension is given the 40*b1cdbd2cSJim Jagielski oportunity to show or hide depending on the number of available displays. 41*b1cdbd2cSJim Jagielski */ 42*b1cdbd2cSJim Jagielski class SlideShowRestarter 43*b1cdbd2cSJim Jagielski : public boost::enable_shared_from_this<SlideShowRestarter> 44*b1cdbd2cSJim Jagielski { 45*b1cdbd2cSJim Jagielski public: 46*b1cdbd2cSJim Jagielski /** Create a new SlideShowRestarter object. 47*b1cdbd2cSJim Jagielski @param rpSlideShow 48*b1cdbd2cSJim Jagielski The slide show is used to determine the current slide, which is 49*b1cdbd2cSJim Jagielski restored after the restart, and of course to stop and start the 50*b1cdbd2cSJim Jagielski slide show. 51*b1cdbd2cSJim Jagielski @param pViewShellBase 52*b1cdbd2cSJim Jagielski Used to get access to a slot dispatcher. 53*b1cdbd2cSJim Jagielski */ 54*b1cdbd2cSJim Jagielski SlideShowRestarter ( 55*b1cdbd2cSJim Jagielski const ::rtl::Reference<SlideShow>& rpSlideShow, 56*b1cdbd2cSJim Jagielski ViewShellBase* pViewShellBase); 57*b1cdbd2cSJim Jagielski virtual ~SlideShowRestarter (void); 58*b1cdbd2cSJim Jagielski 59*b1cdbd2cSJim Jagielski /** Restarting the slide show is an asynchronous multi step process 60*b1cdbd2cSJim Jagielski which is started by calling this method. 61*b1cdbd2cSJim Jagielski */ 62*b1cdbd2cSJim Jagielski void Restart (void); 63*b1cdbd2cSJim Jagielski 64*b1cdbd2cSJim Jagielski private: 65*b1cdbd2cSJim Jagielski sal_Int32 mnEventId; 66*b1cdbd2cSJim Jagielski ::rtl::Reference<SlideShow> mpSlideShow; 67*b1cdbd2cSJim Jagielski ViewShellBase* mpViewShellBase; 68*b1cdbd2cSJim Jagielski ::boost::shared_ptr<SlideShowRestarter> mpSelf; 69*b1cdbd2cSJim Jagielski sal_Int32 mnDisplayCount; 70*b1cdbd2cSJim Jagielski SfxDispatcher* mpDispatcher; 71*b1cdbd2cSJim Jagielski sal_Int32 mnCurrentSlideNumber; 72*b1cdbd2cSJim Jagielski 73*b1cdbd2cSJim Jagielski /** The display count is used to determine whether the number of 74*b1cdbd2cSJim Jagielski displays has changed and thus whether restarting the slide show is 75*b1cdbd2cSJim Jagielski really necessary. 76*b1cdbd2cSJim Jagielski */ 77*b1cdbd2cSJim Jagielski sal_Int32 GetDisplayCount (void); 78*b1cdbd2cSJim Jagielski 79*b1cdbd2cSJim Jagielski DECL_LINK(EndPresentation, void*); 80*b1cdbd2cSJim Jagielski 81*b1cdbd2cSJim Jagielski /** Restart the presentation on the slide last shown before the restart 82*b1cdbd2cSJim Jagielski was initiated. 83*b1cdbd2cSJim Jagielski */ 84*b1cdbd2cSJim Jagielski void StartPresentation (void); 85*b1cdbd2cSJim Jagielski }; 86*b1cdbd2cSJim Jagielski 87*b1cdbd2cSJim Jagielski } // end of namespace sd 88