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invert.cpp

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00001 //==============================================
00002 //  copyright            : (C) 2003-2005 by Will Stokes
00003 //==============================================
00004 //  This program is free software; you can redistribute it
00005 //  and/or modify it under the terms of the GNU General
00006 //  Public License as published by the Free Software
00007 //  Foundation; either version 2 of the License, or
00008 //  (at your option) any later version.
00009 //==============================================
00010 
00011 //Systemwide includes
00012 #include <qimage.h>
00013 #include <qstring.h>
00014 #include <math.h>
00015 
00016 //Projectwide includes
00017 #include "invert.h"
00018 #include "../../gui/statusWidget.h"
00019 
00020 //----------------------------------------------
00021 // Inputs:
00022 // -------
00023 // QString filename - location of original image on disk
00024 // StatusWidget* status - widget for making progress visible to user
00025 //
00026 // Outputs:
00027 // --------
00028 // QImage* returned - constructed image
00029 //
00030 // Description:
00031 // ------------
00032 // This method constructs an inverted version of
00033 // the image using Qt's invertPixels method. If we were
00034 // to do this on our own special care to correctly handle the color
00035 // depth would be necessary.
00036 //----------------------------------------------
00037 
00038 //==============================================
00039 QImage* invertEffect( QString filename, StatusWidget* )
00040 {
00041   //load image
00042   QImage* editedImage = new QImage( filename );
00043   
00044   //invert pixel colors, but not alpha components
00045   editedImage->invertPixels( false );
00046   
00047   //return pointer to edited image
00048   return editedImage;  
00049 }
00050 //==============================================

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