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QtMouseWheelSink.cxx

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00001 /* ========================================================================
00002  * Copyright (c) 2006,
00003  * Institute for Computer Graphics and Vision
00004  * Graz University of Technology
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are
00009  * met:
00010  *
00011  * Redistributions of source code must retain the above copyright notice,
00012  * this list of conditions and the following disclaimer.
00013  *
00014  * Redistributions in binary form must reproduce the above copyright
00015  * notice, this list of conditions and the following disclaimer in the
00016  * documentation and/or other materials provided with the distribution.
00017  *
00018  * Neither the name of the Graz University of Technology nor the names of
00019  * its contributors may be used to endorse or promote products derived from
00020  * this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00023  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00024  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00025  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
00026  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  * ========================================================================
00034  * PROJECT: OpenTracker
00035  * ======================================================================== */
00045 #include <dllinclude.h>
00046 #if USE_OTQT
00047 
00048 #include "QtMouseWheelSink.h"
00049 #include "OTQtLog.h"
00050 
00051 namespace ot {
00052 
00053 //--------------------------------------------------------------------------------
00054 void QtMouseWheelSink::onEventGenerated(Event & event, Node & generator)
00055 {
00056   OTQT_DEBUG("QtMouseWheelSink::onEventGenerated(): event.getButton() = %hx\n", event.getButton());
00057 
00058   if (event.getButton() != curr_event_.getButton()) {
00059     // acquire tracking event
00060     acquireEvent(event);
00061   }
00062 
00063   // pass original event to parent nodes
00064   forwardEvent(event);
00065 }
00066 
00067 //--------------------------------------------------------------------------------
00068 bool QtMouseWheelSink::wheelForwardMove() const
00069 {
00070   return (((prev_event_.getButton() >> 0) & 0x0001) == 0 &&
00071           ((curr_event_.getButton() >> 0) & 0x0001) == 1);
00072 
00073 }
00074 
00075 //--------------------------------------------------------------------------------
00076 bool QtMouseWheelSink::wheelBackwardMove() const
00077 {
00078   return (((prev_event_.getButton() >> 1) & 0x0001) == 0 &&
00079           ((curr_event_.getButton() >> 1) & 0x0001) == 1);
00080 }
00081 
00082 
00083 } // namespace ot
00084 
00085 #endif // USE_OTQT
00086 
00087 /*
00088  * ------------------------------------------------------------
00089  *   End of QtMouseWheelSink.cxx
00090  * ------------------------------------------------------------
00091  *   Automatic Emacs configuration follows.
00092  *   Local Variables:
00093  *   mode:c++
00094  *   c-basic-offset: 4
00095  *   eval: (c-set-offset 'substatement-open 0)
00096  *   eval: (c-set-offset 'case-label '+)
00097  *   eval: (c-set-offset 'statement 'c-lineup-runin-statements)
00098  *   eval: (setq indent-tabs-mode nil)
00099  *   End:
00100  * ------------------------------------------------------------
00101  */

copyright (c) 2006 Graz University of Technology