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120 lines
3.2 KiB
120 lines
3.2 KiB
/* This file is part of the KDE project
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Copyright (C) 2005 Thorsten Zachmann <zachmann@kde.org>
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Base code from Kontour.
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Copyright (C) 1998 Kai-Uwe Sattler (kus@iti.cs.uni-magdeburg.de)
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Copyright (C) 2001 Toshitaka Fujioka <fujioka@kde.org>
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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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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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "KPrPolygonPreview.h"
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#include <tqpainter.h>
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#include <math.h>
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KPrPolygonPreview::KPrPolygonPreview( TQWidget* parent, const char* name)
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: TQFrame( parent, name )
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{
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setFrameStyle( WinPanel | Sunken );
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setBackgroundColor( white );
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setMinimumSize( 200, 100 );
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}
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void KPrPolygonPreview::drawContents( TQPainter *painter )
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{
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double angle = 2 * M_PI / nCorners;
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double diameter = static_cast<double>( TQMAX( width(), height() ) - 10 );
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double radius = diameter * 0.5;
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painter->setWindow( tqRound( -radius ), tqRound( -radius ), tqRound( diameter ), tqRound( diameter ) );
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painter->setViewport( 5, 5, width() - 10, height() - 10 );
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painter->setPen( pen );
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painter->setBrush( brush );
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TQPointArray points( isConcave ? nCorners * 2 : nCorners );
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points.setPoint( 0, 0, tqRound( -radius ) );
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if ( isConcave ) {
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angle = angle / 2.0;
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double a = angle;
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double r = radius - ( sharpness / 100.0 * radius );
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for ( int i = 1; i < nCorners * 2; ++i ) {
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double xp, yp;
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if ( i % 2 ) {
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xp = r * sin( a );
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yp = -r * cos( a );
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}
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else {
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xp = radius * sin( a );
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yp = -radius * cos( a );
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}
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a += angle;
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points.setPoint( i, (int)xp, (int)yp );
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}
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}
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else {
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double a = angle;
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for ( int i = 1; i < nCorners; ++i ) {
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double xp = radius * sin( a );
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double yp = -radius * cos( a );
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a += angle;
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points.setPoint( i, (int)xp, (int)yp );
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}
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}
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painter->drawPolygon( points );
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}
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void KPrPolygonPreview::slotConvexConcave( bool convexConcave )
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{
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isConcave = convexConcave;
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repaint();
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}
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void KPrPolygonPreview::slotConvexPolygon()
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{
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isConcave = false;
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repaint();
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}
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void KPrPolygonPreview::slotConcavePolygon()
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{
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isConcave = true;
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repaint();
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}
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void KPrPolygonPreview::slotCornersValue( int value )
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{
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nCorners = value;
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repaint();
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}
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void KPrPolygonPreview::slotSharpnessValue( int value )
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{
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sharpness = value;
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repaint();
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}
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#include "KPrPolygonPreview.moc"
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