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/* This file is part of the KDE project
Copyright (C) 2001-2005 David Faure <faure@kde.org>
Copyright (C) 2006 Thomas Zander <zander@kde.org>
Copyright (C) 2010 KO GmbH <boud@kogmbh.com>
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 <WidgetsDebug.h>
#include <KoUnit.h> // for POINT_TO_INCH
#include <KoDpi.h>
#include <QPointF>
#include <QRectF>
KoZoomHandler::KoZoomHandler()
: KoViewConverter()
, m_zoomMode(KoZoomMode::ZOOM_CONSTANT)
, m_resolutionX(0)
, m_resolutionY(0)
, m_zoomedResolutionX(0)
, m_zoomedResolutionY(0)
{
setZoom(1.0);
setZoomMode( KoZoomMode::ZOOM_CONSTANT );
setDpi(KoDpi::dpiX(), KoDpi::dpiY());
}
KoZoomHandler::~KoZoomHandler()
{
}
void KoZoomHandler::setResolutionToStandard()
{
setDpi(KoDpi::dpiX(), KoDpi::dpiY());
}
void KoZoomHandler::setDpi(int dpiX, int dpiY)
{
setResolution(POINT_TO_INCH(static_cast<qreal>(dpiX)),
POINT_TO_INCH(static_cast<qreal>(dpiY)));
}
void KoZoomHandler::setResolution( qreal resolutionX, qreal resolutionY )
{
m_resolutionX = resolutionX;
m_resolutionY = resolutionY;
if (qFuzzyCompare(m_resolutionX, 1))
m_resolutionX = 1;
if (qFuzzyCompare(m_resolutionY, 1))
m_resolutionY = 1;
m_zoomedResolutionX = zoom() * resolutionX;
m_zoomedResolutionY = zoom() * resolutionY;
}
void KoZoomHandler::setZoomedResolution( qreal zoomedResolutionX, qreal zoomedResolutionY )
{
// 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 Stage presentations.
m_zoomedResolutionX = zoomedResolutionX;
m_zoomedResolutionY = zoomedResolutionY;
}
void KoZoomHandler::setZoom( qreal zoom )
{
if (qFuzzyCompare(zoom, qreal(1.0))) {
zoom = 1.0;
}
KoViewConverter::setZoom(zoom);
if( zoom == 1.0 ) {
m_zoomedResolutionX = m_resolutionX;
m_zoomedResolutionY = m_resolutionY;
} else {
m_zoomedResolutionX = zoom * m_resolutionX;
m_zoomedResolutionY = zoom * m_resolutionY;
}
}
QPointF KoZoomHandler::documentToView( const QPointF &documentPoint ) const
{
return QPointF( zoomItX( documentPoint.x() ),
zoomItY( documentPoint.y() ));
}
QPointF KoZoomHandler::viewToDocument( const QPointF &viewPoint ) const
{
return QPointF( unzoomItX( viewPoint.x() ),
unzoomItY( viewPoint.y() ) );
}
QRectF KoZoomHandler::documentToView( const QRectF &documentRect ) const
{
QRectF r (zoomItX( documentRect.x() ),
zoomItY( documentRect.y() ),
zoomItX( documentRect.width() ),
zoomItY( documentRect.height() ) );
return r;
}
QRectF KoZoomHandler::viewToDocument( const QRectF &viewRect ) const
{
QRectF r ( unzoomItX( viewRect.x() ),
unzoomItY( viewRect.y()),
unzoomItX( viewRect.width() ),
unzoomItY( viewRect.height() ) );
return r;
}
QSizeF KoZoomHandler::documentToView( const QSizeF &documentSize ) const
{
return QSizeF( zoomItX( documentSize.width() ),
zoomItY( documentSize.height() ) );
}
QSizeF KoZoomHandler::viewToDocument( const QSizeF &viewSize ) const
{
return QSizeF( unzoomItX( viewSize.width() ),
unzoomItY( viewSize.height() ) );
}
qreal KoZoomHandler::documentToViewX( qreal documentX ) const
{
return zoomItX( documentX );
}
qreal KoZoomHandler::documentToViewY( qreal documentY ) const
{
return zoomItY( documentY );
}
qreal KoZoomHandler::viewToDocumentX( qreal viewX ) const
{
return unzoomItX( viewX );
}
qreal KoZoomHandler::viewToDocumentY( qreal viewY ) const
{
return unzoomItY( viewY );
}
void KoZoomHandler::zoom(qreal *zoomX, qreal *zoomY) const
{
*zoomX = zoomItX(100.0) / 100.0;
*zoomY = zoomItY(100.0) / 100.0;
}
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