yamf/item/polygon.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Jorge Cuadrado                                  *
   3  *   kuadrosxx@gmail.com                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "polygon.h"
  22 #include <QPainter>
  23
  24 namespace YAMF {
  25
  26 namespace Item {
  27
  28 struct Polygon::Private
  29 {
  30         Private(int corners) : corners(corners) {};
  31
  32         int corners;
  33         QRectF rect;
  34
  35         QPainterPath polygon;
  36
  37 };
  38
  39 Polygon::Polygon(int corners, QGraphicsItem * parent, QGraphicsScene * scene): QAbstractGraphicsShapeItem(parent, scene), d(new Private(corners))
  40 {
  41
  42 }
  43
  44 Polygon::Polygon(int corners, const QRectF & rect, QGraphicsItem * parent, QGraphicsScene * scene): QAbstractGraphicsShapeItem(parent, scene), d(new Private(corners))
  45 {
  46         setRect(rect);
  47 }
  48
  49 Polygon::~Polygon()
  50 {
  51         delete d;
  52 }
  53
  54
  55 void Polygon::fromXml(const QString &xml)
  56 {
  57
  58 }
  59
  60 QDomElement Polygon::toXml(QDomDocument &doc) const
  61 {
  62
  63 }
  64
  65 QRectF Polygon::boundingRect() const
  66 {
  67         return d->rect;
  68 }
  69
  70 void Polygon::paint( QPainter * painter, const QStyleOptionGraphicsItem *, QWidget *)
  71 {
  72         painter->save();
  73
  74
  75         painter->setPen(pen());
  76         painter->setBrush(brush());
  77
  78         painter->drawPath(d->polygon);
  79         painter->restore();
  80 }
  81
  82
  83
  84 void Polygon::setRect(const QRectF& rect)
  85 {
  86         d->rect = rect;
  87         QPainterPath ellipse;
  88
  89         ellipse.addEllipse( sceneBoundingRect() );
  90
  91         d->polygon = QPainterPath();
  92
  93         d->polygon.moveTo(ellipse.pointAtPercent(0));
  94
  95         for(double i = 1.0/d->corners; i <= 1; i += 1.0/d->corners)
  96         {
  97                 d->polygon.lineTo(ellipse.pointAtPercent(i));
  98         }
  99 }
 100
 101 QRectF Polygon::rect() const
 102 {
 103         return d->rect;
 104 }
 105
 106 QPainterPath Polygon::shape () const
 107 {
 108         return d->polygon;
 109 }
 110
 111 }
 112
 113 }