libs/flake/KoFlake.cpp

0001 /* This file is part of the KDE project
0002  * Copyright (C) 2009 Jos van den Oever <jos@vandenoever.info>
0003  * Copyright (C) 2009 Thomas Zander <zander@kde.org>
0004  * Copyright (C) 2008 Jan Hambrecht <jaham@gmx.net>
0005  * Copyright (C) 2010 Thorsten Zachmann <zachmann@kde.org>
0006  *
0007  * This library is free software; you can redistribute it and/or
0008  * modify it under the terms of the GNU Library General Public
0009  * License as published by the Free Software Foundation; either
0010  * version 2 of the License, or (at your option) any later version.
0011  *
0012  * This library is distributed in the hope that it will be useful,
0013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0015  * Library General Public License for more details.
0016  *
0017  * You should have received a copy of the GNU Library General Public License
0018  * along with this library; see the file COPYING.LIB.  If not, write to
0019  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0020  * Boston, MA 02110-1301, USA.
0021  */
0022
0023 #include "KoFlake.h"
0024 #include "KoShape.h"
0025
0026 #include <QGradient>
0027 #include <math.h>
0028
0029 QGradient *KoFlake::cloneGradient(const QGradient *gradient)
0030 {
0031     if (! gradient)
0032         return 0;
0033
0034     QGradient *clone = 0;
0035
0036     switch (gradient->type()) {
0037     case QGradient::LinearGradient:
0038     {
0039         const QLinearGradient *lg = static_cast<const QLinearGradient*>(gradient);
0040         clone = new QLinearGradient(lg->start(), lg->finalStop());
0041         break;
0042     }
0043     case QGradient::RadialGradient:
0044     {
0045         const QRadialGradient *rg = static_cast<const QRadialGradient*>(gradient);
0046         clone = new QRadialGradient(rg->center(), rg->radius(), rg->focalPoint());
0047         break;
0048     }
0049     case QGradient::ConicalGradient:
0050     {
0051         const QConicalGradient *cg = static_cast<const QConicalGradient*>(gradient);
0052         clone = new QConicalGradient(cg->center(), cg->angle());
0053         break;
0054     }
0055     default:
0056         return 0;
0057     }
0058
0059     clone->setCoordinateMode(gradient->coordinateMode());
0060     clone->setSpread(gradient->spread());
0061     clone->setStops(gradient->stops());
0062
0063     return clone;
0064 }
0065
0066 QPointF KoFlake::toRelative(const QPointF &absolute, const QSizeF &size)
0067 {
0068     return QPointF(size.width() == 0 ? 0: absolute.x() / size.width(),
0069                    size.height() == 0 ? 0: absolute.y() / size.height());
0070 }
0071
0072 QPointF KoFlake::toAbsolute(const QPointF &relative, const QSizeF &size)
0073 {
0074     return QPointF(relative.x() * size.width(), relative.y() * size.height());
0075 }