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