ipdf-svn/src/controller.cpp Source File

00001 /* 
00002  * Copyright (C) 2006, iRex Technologies B.V.
00003  *
00004  * This program is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2, or (at your option)
00007  * any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  */
00018  
00019 #include "controller.h"
00020 #include "PDFViewerLog.h"
00021 #include <libermanifest/ermanifest.h>
00022 
00023 void Controller::validateSettings()
00024 {
00025     // validate
00026     PDFDoc * pdfdoc = core->getPDFDoc();    
00027     if (settings.getCurrentPage() <= 0 ||
00028         settings.getCurrentPage() > pdfdoc->getNumPages())
00029     {
00030         settings.setCurrentPage(1);
00031     }        
00032 
00033     if ((settings.getZoom() > ZoomMax  ||
00034         settings.getZoom() < ZoomMin ) &&
00035         settings.getZoom() != ZoomWidth)
00036     {
00037         settings.setZoom(ZoomPage);
00038     }        
00039 
00040     if (settings.getRotate() != 0 &&
00041         settings.getRotate() != 90 &&
00042         settings.getRotate() != 180 &&
00043         settings.getRotate() != 270)
00044     {
00045         settings.setRotate(0);
00046     }        
00047 
00048     if (settings.getRotate() == 180)
00049     {
00050         settings.setRotate(0);
00051     }
00052     else if (settings.getRotate() == 90)
00053     {
00054         settings.setRotate(270);
00055     }
00056 
00057     PV_LOGPRINTF("Current page %d zoom factor %lf rotate %d x %d y %d mode %d\n", 
00058         settings.getCurrentPage(), 
00059         settings.getZoom(), 
00060         settings.getRotate(),         
00061         settings.getScreenX(),
00062         settings.getScreenY(),
00063         settings.getMode());
00064 }
00065 
00066 double Controller::calZoom(const int page)
00067 {
00068     if (page < 1 ||
00069         page > core->getNumPages())
00070     {
00071         return DefZoom;
00072     }
00073 
00074     if (settings.getZoom() > 0)
00075     {
00076         return core->verifyZoomMax(settings.getZoom(), page);
00077     }
00078 
00079     int rot = core->getPageRotate(page);
00080     rot += settings.getRotate();
00081     if (rot >= 360) rot -= 360;
00082     else if (rot < 0) rot += 360;
00083     double uw = core->getPageWidth(page);
00084     double uh = core->getPageHeight(page);
00085     double ut;
00086     if (rot == 90 || rot == 270)
00087     {
00088         ut = uw; uw = uh; uh = ut;
00089     }
00090     if (ZoomPage == settings.getZoom())
00091     {
00092         uw = settings.getScreenWidth() / uw;
00093         uh = settings.getScreenHeight() / uh;
00094         return  (uw < uh) ? (uw * 100) : (uh * 100);
00095     }
00096     else if (ZoomWidth == settings.getZoom())
00097     {
00098         if (settings.getRotate() == 0 || 
00099             settings.getRotate() == 180)
00100         {   
00101             return (100 * settings.getScreenWidth() / uw);
00102         }
00103         else if (settings.getRotate() == 90 || 
00104             settings.getRotate() == 270)            
00105         {
00106             return (100 * settings.getScreenHeight() / uh);
00107         }
00108     }
00109     return DefZoom;
00110 }
00111