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/*
* Copyright (C) 2006, 2008-2009 Thomas Zander <zander@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 "KoViewConverter.h"
KoViewConverter::KoViewConverter()
: m_zoomLevel(1.0)
{
}
QPointF KoViewConverter::documentToView(const QPointF &documentPoint) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return documentPoint;
return QPointF(documentToViewX(documentPoint.x()), documentToViewY(documentPoint.y()));
}
QPointF KoViewConverter::viewToDocument(const QPointF &viewPoint) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return viewPoint;
return QPointF(viewToDocumentX(viewPoint.x()), viewToDocumentY(viewPoint.y()));
}
QRectF KoViewConverter::documentToView(const QRectF &documentRect) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return documentRect;
return QRectF(documentToView(documentRect.topLeft()), documentToView(documentRect.size()));
}
QRectF KoViewConverter::viewToDocument(const QRectF &viewRect) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return viewRect;
return QRectF(viewToDocument(viewRect.topLeft()), viewToDocument(viewRect.size()));
}
QSizeF KoViewConverter::documentToView(const QSizeF &documentSize) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return documentSize;
return QSizeF(documentToViewX(documentSize.width()), documentToViewY(documentSize.height()));
}
QSizeF KoViewConverter::viewToDocument(const QSizeF &viewSize) const
{
if (qFuzzyCompare(m_zoomLevel, 1))
return viewSize;
return QSizeF(viewToDocumentX(viewSize.width()), viewToDocumentY(viewSize.height()));
}
void KoViewConverter::zoom(qreal *zoomX, qreal *zoomY) const
{
*zoomX = m_zoomLevel;
*zoomY = m_zoomLevel;
}
qreal KoViewConverter::documentToViewX(qreal documentX) const
{
return documentX * m_zoomLevel;
}
qreal KoViewConverter::documentToViewY(qreal documentY) const
{
return documentY * m_zoomLevel;
}
qreal KoViewConverter::viewToDocumentX(qreal viewX) const
{
return viewX / m_zoomLevel;
}
qreal KoViewConverter::viewToDocumentY(qreal viewY) const
{
return viewY / m_zoomLevel;
}
void KoViewConverter::setZoom(qreal zoom)
{
if (qFuzzyCompare(zoom, 0.0) || qFuzzyCompare(zoom, 1.0)) {
zoom = 1;
}
m_zoomLevel = zoom;
}
qreal KoViewConverter::zoom() const
{
return m_zoomLevel;
}
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