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/* This file is part of the KDE project
Copyright (C) 2001-2005 David Faure <faure@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "KoZoomHandler.h"
#include <kdebug.h>
#include <KoUnit.h> // for POINT_TO_INCH
#include <KoGlobal.h>
KoZoomHandler::KoZoomHandler()
{
// Note that this calls the method below, not the derived one
setZoomAndResolution( 100, KoGlobal::dpiX(), KoGlobal::dpiY() );
}
void KoZoomHandler::setZoomAndResolution( int zoom, int dpiX, int dpiY )
{
// m_resolution[XY] is in pixel per pt
m_resolutionX = POINT_TO_INCH( static_cast<double>(dpiX) );
m_resolutionY = POINT_TO_INCH( static_cast<double>(dpiY) );
setZoom( zoom );
/*kdDebug(32500) << "KoZoomHandler::setZoomAndResolution " << zoom << " " << dpiX << "," << dpiY
<< " m_resolutionX=" << m_resolutionX
<< " m_zoomedResolutionX=" << m_zoomedResolutionX
<< " m_resolutionY=" << m_resolutionY
<< " m_zoomedResolutionY=" << m_zoomedResolutionY << endl;*/
}
void KoZoomHandler::setResolution( double resolutionX, double resolutionY )
{
m_zoom = 100;
m_resolutionX = resolutionX;
m_resolutionY = resolutionY;
m_zoomedResolutionX = resolutionX;
m_zoomedResolutionY = resolutionY;
}
void KoZoomHandler::setZoomedResolution( double zoomedResolutionX, double zoomedResolutionY )
{
// m_zoom doesn't matter, it's only used in setZoom() to calculated the zoomed resolutions
// Here we know them. The whole point of this method is to allow a different zoom factor
// for X and for Y, as can be useful for e.g. fullscreen kpresenter presentations.
m_zoomedResolutionX = zoomedResolutionX;
m_zoomedResolutionY = zoomedResolutionY;
}
void KoZoomHandler::setZoom( int zoom )
{
m_zoom = zoom;
if( m_zoom == 100 ) {
m_zoomedResolutionX = m_resolutionX;
m_zoomedResolutionY = m_resolutionY;
} else {
m_zoomedResolutionX = static_cast<double>(m_zoom) * m_resolutionX / 100.0;
m_zoomedResolutionY = static_cast<double>(m_zoom) * m_resolutionY / 100.0;
}
}
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