FreeCAD

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/***************************************************************************
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 *   Copyright (c) 2016 WandererFan <wandererfan@gmail.com>                *
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 *                                                                         *
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 *   This file is part of the FreeCAD CAx development system.              *
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 *                                                                         *
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 *   This library is free software; you can redistribute it and/or         *
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 *   modify it under the terms of the GNU Library General Public           *
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 *   License as published by the Free Software Foundation; either          *
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 *   version 2 of the License, or (at your option) any later version.      *
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 *                                                                         *
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 *   This library  is distributed in the hope that it will be useful,      *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU Library General Public License for more details.                  *
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 *                                                                         *
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 *   You should have received a copy of the GNU Library General Public     *
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 *   License along with this library; see the file COPYING.LIB. If not,    *
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
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 *                                                                         *
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 ***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <cassert>
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# include <QPainter>
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# include <QPainterPath>
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# include <QRectF>
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# include <QStyleOptionGraphicsItem>
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#endif
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#include <Mod/TechDraw/App/LineGroup.h>
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#include <Mod/TechDraw/App/Preferences.h>
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#include "QGIMatting.h"
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#include "Rez.h"
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#include "ZVALUE.h"
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using namespace TechDrawGui;
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QGIMatting::QGIMatting() :
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    m_radius(5.0),
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    m_fudge(1.01)       // same as m_fudge in DrawViewDetail
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{
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    setCacheMode(QGraphicsItem::NoCache);
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    setAcceptHoverEvents(false);
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    setFlag(QGraphicsItem::ItemIsSelectable, false);
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    setFlag(QGraphicsItem::ItemIsMovable, false);
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    m_border = new QGraphicsPathItem();
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    addToGroup(m_border);
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    m_pen.setColor(Qt::black);
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    m_brush.setStyle(Qt::NoBrush);
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    m_border->setPen(m_pen);
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    m_border->setBrush(m_brush);
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    m_mat = new QGraphicsPathItem();
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    addToGroup(m_mat);
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    m_matPen.setColor(Qt::white);
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    m_matPen.setStyle(Qt::SolidLine);
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    m_matBrush.setStyle(Qt::SolidPattern);
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    m_matBrush.setColor(Qt::white);
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    m_mat->setPen(m_matPen);
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    m_mat->setBrush(m_matBrush);
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    setZValue(ZVALUE::MATTING);
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}
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void QGIMatting::draw()
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{
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    prepareGeometryChange();
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    double penWidth = Rez::guiX(TechDraw::LineGroup::getDefaultWidth("Graphic"));
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    double penWidth_2 = penWidth / 2.0;
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    m_pen.setWidthF(penWidth);
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    double matSize = m_radius * m_fudge + 2 * penWidth;   // outer bound of mat
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    m_matPen.setWidthF(2.0 * penWidth);
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    QPainterPath ppCut;
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    QPainterPath ppMat;
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    if (getHoleStyle() == 0) {
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        QRectF roundCutout (-m_radius, -m_radius, 2.0 * m_radius, 2.0 * m_radius);
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        ppCut.addEllipse(roundCutout);
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        QRectF roundMat(-matSize, -matSize, 2.0 * matSize, 2.0 * matSize);
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        ppMat.addEllipse(roundMat);
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        ppMat.addEllipse(roundCutout.adjusted(-penWidth_2, -penWidth_2, penWidth_2, penWidth_2));
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    } else {
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        double squareSize = m_radius;
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        QRectF squareCutout (-squareSize, -squareSize, 2.0 * squareSize, 2.0 * squareSize);
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        ppCut.addRect(squareCutout);
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        QRectF squareMat(-matSize, -matSize, 2.0 * matSize, 2.0 * matSize);
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        ppMat.addRect(squareMat);
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        ppMat.addRect(squareCutout.adjusted(-penWidth_2, -penWidth_2, penWidth_2, penWidth_2));
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    }
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    m_border->setPen(m_pen);
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    m_border->setPath(ppCut);
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    m_border->setZValue(ZVALUE::MATTING);
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    m_mat->setPen(m_matPen);
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    m_mat->setPath(ppMat);
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    m_mat->setZValue(ZVALUE::MATTING - 1.0);
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}
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int QGIMatting::getHoleStyle()
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{
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    return TechDraw::Preferences::mattingStyle();
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}
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//need this because QQGIG only updates BR when items added/deleted.
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QRectF QGIMatting::boundingRect() const
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{
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    return childrenBoundingRect().adjusted(-1, -1, 1,1);
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}
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void QGIMatting::paint ( QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget) {
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    QStyleOptionGraphicsItem myOption(*option);
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    myOption.state &= ~QStyle::State_Selected;
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    //painter->drawRect(boundingRect().adjusted(-2.0, -2.0, 2.0, 2.0));
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    QGraphicsItemGroup::paint (painter, &myOption, widget);
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}
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