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0001 /* This file is part of the KDE project
0002  * Copyright (c) 2009 Jan Hambrecht <jaham@gmx.net>
0003  *
0004  * This library is free software; you can redistribute it and/or
0005  * modify it under the terms of the GNU Lesser General Public
0006  * License as published by the Free Software Foundation; either
0007  * version 2.1 of the License, or (at your option) any later version.
0008  *
0009  * This library is distributed in the hope that it will be useful,
0010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012  * Library General Public License for more details.
0013  *
0014  * You should have received a copy of the GNU Lesser General Public License
0015  * along with this library; see the file COPYING.LIB.  If not, write to
0016  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0017  * Boston, MA 02110-1301, USA.
0018  */
0019 
0020 #include "KoFilterEffectRenderContext.h"
0021 #include "KoViewConverter.h"
0022 
0023 #include <QRectF>
0024 #include <QTransform>
0025 
0026 class Q_DECL_HIDDEN KoFilterEffectRenderContext::Private
0027 {
0028 public:
0029     Private(const KoViewConverter &viewConverter)
0030         : converter(viewConverter)
0031     {}
0032 
0033     QRectF filterRegion;
0034     QRectF shapeBound;
0035     const KoViewConverter & converter;
0036 };
0037 
0038 KoFilterEffectRenderContext::KoFilterEffectRenderContext(const KoViewConverter &converter)
0039 : d(new Private(converter))
0040 {
0041 }
0042 
0043 KoFilterEffectRenderContext::~KoFilterEffectRenderContext()
0044 {
0045     delete d;
0046 }
0047 
0048 QRectF KoFilterEffectRenderContext::filterRegion() const
0049 {
0050     return d->filterRegion;
0051 }
0052 
0053 void KoFilterEffectRenderContext::setFilterRegion(const QRectF &filterRegion)
0054 {
0055     d->filterRegion = filterRegion;
0056 }
0057 
0058 void KoFilterEffectRenderContext::setShapeBoundingBox(const QRectF &bound)
0059 {
0060     d->shapeBound = bound;
0061 }
0062 
0063 QPointF KoFilterEffectRenderContext::toUserSpace(const QPointF &value) const
0064 {
0065     return QPointF(value.x()*d->shapeBound.width(), value.y()*d->shapeBound.height());
0066 }
0067 
0068 qreal KoFilterEffectRenderContext::toUserSpaceX(qreal value) const
0069 {
0070     return value * d->shapeBound.width();
0071 }
0072 
0073 qreal KoFilterEffectRenderContext::toUserSpaceY(qreal value) const
0074 {
0075     return value * d->shapeBound.height();
0076 }
0077 
0078 const KoViewConverter * KoFilterEffectRenderContext::viewConverter() const
0079 {
0080     return &d->converter;
0081 }