Jim Evins
122 lines
3.5 KiB
C++
122 lines
3.5 KiB
C++
/* FrameCd.cpp
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*
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* Copyright (C) 2013 Jim Evins <evins@snaught.com>
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*
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* This file is part of gLabels-qt.
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*
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* gLabels-qt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gLabels-qt 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gLabels-qt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "FrameCd.h"
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#include <cmath>
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#include "StrUtil.h"
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#include "privateConstants.h"
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namespace libglabels
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{
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const QString FrameCd::sizeDescription( const Units *units ) const
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{
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if ( units->id() == "in" )
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{
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QString dStr = StrUtil::formatFraction( 2 * mR1 * units->unitsPerPoint() );
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return QString().sprintf( "%s %s %s",
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qPrintable(dStr),
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qPrintable(units->name()),
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qPrintable(tr("diameter")) );
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}
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else
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{
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return QString().sprintf( "%.5g %s %s",
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2 * mR1 * units->unitsPerPoint(),
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qPrintable(units->name()),
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qPrintable(tr("diameter")) );
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}
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}
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bool FrameCd::isSimilarTo( Frame *other ) const
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{
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if ( FrameCd *otherCd = dynamic_cast<FrameCd*>(other) )
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{
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if ( (fabs( mW - otherCd->mW ) <= Constants::EPSILON) &&
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(fabs( mH - otherCd->mH ) <= Constants::EPSILON) &&
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(fabs( mR1 - otherCd->mR1 ) <= Constants::EPSILON) &&
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(fabs( mR2 - otherCd->mR2 ) <= Constants::EPSILON) )
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{
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return true;
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}
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}
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return false;
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}
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void FrameCd::initPath()
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{
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// Outer path (may be clipped in the case business card type CD)
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double theta1 = acos( w() / (2*mR1) ) * 180/M_PI;
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double theta2 = asin( h() / (2*mR1) ) * 180/M_PI;
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mPath.arcMoveTo( 0, 0, 2*mR1, 2*mR1, theta1 );
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mPath.arcTo( 0, 0, 2*mR1, 2*mR1, theta1, theta2-theta1 );
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mPath.arcTo( 0, 0, 2*mR1, 2*mR1, 180-theta2, theta2-theta1 );
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mPath.arcTo( 0, 0, 2*mR1, 2*mR1, 180+theta1, theta2-theta1 );
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mPath.arcTo( 0, 0, 2*mR1, 2*mR1, 360-theta2, theta2-theta1 );
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mPath.closeSubpath();
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// Inner path (hole)
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mPath.addEllipse( mR1-mR2, mR1-mR2, 2*mR2, 2*mR2 );
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// Translate to account for offset with clipped business card CDs (applies to element already drawn)
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mPath.translate( w()/2 - mR1, h()/2 - mR1 );
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}
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QGraphicsItem* FrameCd::createMarginGraphicsItem( double size, const QPen& pen ) const
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{
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double r1 = mR1 - size;
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double r2 = mR2 + size;
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QPainterPath path;
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// Outer path (may be clipped in the case business card type CD)
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double theta1 = acos( (mW-2*size) / (2*r1) ) * 180/M_PI;
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double theta2 = asin( (mH-2*size) / (2*r1) ) * 180/M_PI;
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path.arcMoveTo( 0, 0, 2*r1, 2*r1, theta1 );
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path.arcTo( 0, 0, 2*r1, 2*r1, theta1, theta2-theta1 );
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path.arcTo( 0, 0, 2*r1, 2*r1, 180-theta2, theta2-theta1 );
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path.arcTo( 0, 0, 2*r1, 2*r1, 180+theta1, theta2-theta1 );
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path.arcTo( 0, 0, 2*r1, 2*r1, 360-theta2, theta2-theta1 );
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path.closeSubpath();
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// Inner path (hole)
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path.addEllipse( r1-r2, r1-r2, 2*r2, 2*r2 );
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// Translate to account for offset with clipped business card CDs (applies to element already drawn)
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path.translate( mW/2 - r1, mH/2 - r1 );
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QGraphicsPathItem* item = new QGraphicsPathItem( path );
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item->setPen( pen );
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return item;
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}
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}
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