File indexing completed on 2024-05-19 04:36:33

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2013 Dominik Haumann <dhaumann@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, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #include "StealthTickArrow.h"
 
 #include <tikz/core/Style.h>
 
 #include <QPainter>
 
 #include <cmath>
 
 class StealthTickArrowPrivate
 {
     public:
 };
 
 StealthTickArrow::StealthTickArrow(tikz::core::Style * style)
     : AbstractArrow(style)
     , d(new StealthTickArrowPrivate())
 {
 }
 
 StealthTickArrow::~StealthTickArrow()
 {
     delete d;
 }
 
 tikz::Arrow StealthTickArrow::type() const
 {
     return tikz::Arrow::StealthTickArrow;
 }
 
 QString StealthTickArrow::name() const
 {
     return QObject::tr("stealth'");
 }
 
 qreal StealthTickArrow::leftExtend() const
 {
     // see: pgfcorearrows.code.tex
     const qreal lineWidth = style()->penWidth().toPoint();
     const qreal dima = 0.28 + 0.3 * lineWidth;
     const qreal dimb = 6 * dima + 0.5 * lineWidth;
     return -dimb;
 }
 
 qreal StealthTickArrow::rightExtend() const
 {
     // see: pgfcorearrows.code.tex
     const qreal lineWidth = style()->penWidth().toPoint();
     const qreal dima = 0.28 + 0.3 * lineWidth;
     const qreal dimb = 2 * dima + 0.5 * lineWidth;
     return dimb;
 }
 
 void StealthTickArrow::draw(QPainter* painter) const
 {
     // see: pgfcorearrows.code.tex
     QPainterPath p = path();
     painter->save();
     QPen pen = painter->pen();
     pen.setWidthF(style()->penWidth().toPoint());
     pen.setColor(style()->penColor());
     pen.setJoinStyle(Qt::RoundJoin);
     painter->setPen(pen);
     painter->setBrush(Qt::black); // TODO
     painter->drawPath(p);
     painter->restore();
 }
 
 QPainterPath StealthTickArrow::path() const
 {
     // see: pgfcorearrows.code.tex
     qreal dima = 0.28 + 0.3 * style()->penWidth().toPoint();
 
     QPainterPath path;
     path.moveTo(dima * QPointF(2, 0));
     path.cubicTo(dima * QPointF(-0.5, 0.5),
                  dima * QPointF(-3, 1.5),
                  dima * QPointF(-6, 3.25));
     path.cubicTo(dima * QPointF(-3, 1),
                  dima * QPointF(-3, -1),
                  dima * QPointF(-6, -3.25));
     path.cubicTo(dima * QPointF(-3, -1.5),
                  dima * QPointF(-0.5, -0.5),
                  dima * QPointF(2, 0));
     path.closeSubpath();
 
     return path;
 }
 
 
 
 ReversedStealthTickArrow::ReversedStealthTickArrow(tikz::core::Style * style)
     : StealthTickArrow(style)
 {
 }
 
 tikz::Arrow ReversedStealthTickArrow::type() const
 {
     return tikz::Arrow::ReversedStealthTickArrow;
 }
 
 QString ReversedStealthTickArrow::name() const
 {
     return QObject::tr("stealth' reversed");
 }
 
 qreal ReversedStealthTickArrow::leftExtend() const
 {
     return -StealthTickArrow::rightExtend();
 }
 
 qreal ReversedStealthTickArrow::rightExtend() const
 {
     return -StealthTickArrow::leftExtend();
 }
 
 QPainterPath ReversedStealthTickArrow::path() const
 {
     QTransform trans;
     trans.scale(-1, 1);
     return trans.map(StealthTickArrow::path());
 }
 // kate: indent-width 4; replace-tabs on;